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Presented by: Kay Wille
Concrete has long interacted with nature—from Roman seawater concretes that mineralized in situ to oyster-encrusted breakwaters and vegetated revetments. These precedents suggest moving beyond “resistance only” toward resilient structures that cooperate with living systems. This talk outlines a paradigm of structural–ecological symbiosis using ultra-high performance concrete (UHPC) as the platform. UHPC’s strength, toughness, and durability enable slender sections and protective shells that preserve safety while creating room for biofunction. Near-term work targets: (1) bio-receptive UHPC and surface morphologies with tuned roughness, porosity, and nutrient microchannels to support benign biofilms, lichens, shells, or engineered mosses; (2) fiber/lattice exoskeletons that mechanically support climbing vegetation or root mats without sacrificing cover or durability; and (3) quantifying growth-induced actions—root pressure and biogenic mineralization—on cracking, stiffness, transport, freeze–thaw, abrasion, and fire. The aim is practical: nature-positive UHPC elements that protect people and infrastructure while inviting habitat.
Presented By: Anthony Ragosta
UHPC may initially appear more carbon-intensive on a per-unit basis relative to conventional construction materials. However, this simplified analysis overlooks UHPC’s potential to enable more efficient structural designs, reduce material usage, minimize life-cycle maintenance, and extend service life compared to conventional reinforced concrete structures. These benefits are realized at the project level, not just the material level, through an integrated approach that combines structural design with life-cycle environmental impact assessment, commonly known as life-cycle assessment (LCA). In short, when a holistic approach is applied, UHPC has the potential to be both a structurally and environmentally sustainable building solution. This presentation provides an overview of the current draft of the Technote “Can Ultra-High-Performance Concrete Be a Sustainable Building Solution?” and opens the forum for feedback and discussions
More and more alternative cements are beginning to appear on the market and some of them require admixtures that are different from those traditionally used with portland cements. We will learn what these admixtures are and how they are used with these alternative cements.
This session will provide a state-of-the-art review of modeling techniques for 3D printing with concrete (3DPC) that are necessary for designing the printed structure, accounting for material properties and printing process parameters. The session blends contributions on latest research developments, current research trajectories, and practical applications.
Low carbon concrete, which produces a lower carbon footprint than traditional concrete, is attracting growing interest of the cement and concrete industry because it offers a solution to reduce its environmental impact and make concrete more sustainable. This technical session aims to shed light on the recent advances and applications of low carbon self-consolidating concrete (LCSCC), an emerging material that not only offers superior performance but also contributes significantly to energy savings and carbon footprint reduction. In this session, we will: (1) discuss the alternative, low carbon cementitious materials in SCC and address their properties and compatibility with existing SCC mixes; (2) explore strategies for reducing carbon emissions in SCC production, such as optimizing mix designs, improving energy efficiency, and implementing carbon capture technologies; (3) review research on the performance of fresh and hardened LCSCC mixes; and (4) share best practices and lessons learned from past projects involving low carbon concrete, and discuss strategies for overcoming barriers to adoption.
The object of this session is to explore recent artificial intelligence (AI) methods that can be used to facilitate building material development and material discovery. Such topics can include but are not limited to: novel application of physics-informed approaches, production and/or process optimization, mixture design of concrete, and optimization of property and carbon footprint.
The objective of this session is to present best practices for incorporating research into concrete education. The scope of the session is not limited to higher education and the audience will benefit from hearing how research and concrete related topics can also be incorporated into K-12 curricula. The main learning objective is to take home creative ways to establish meaningful research opportunities for students in the field of concrete materials and structures.
Biochar, a carbon-rich material produced through the pyrolysis of biomass, is increasingly being explored as a sustainable additive in concrete. This course will provide an overview of biochar production and its diverse applications in concrete, from partial replacement of cement and aggregates to surface treatments of recycled materials. Attendees will gain insights into how biochar influences hydration, strength development, and durability, while also addressing the challenges of workability and admixture compatibility. The course will also highlight the role of biochar in carbon sequestration, waste valorization, and emissions reduction, offering a comprehensive perspective on its potential to contribute to carbon-neutral or even carbon-negative concrete solutions.
The topics covered by codes from ACI has been expanding greatly in recent years. Come hear an update on six new, never before published codes currently in development by ACI Committees. Learn about the area each code covers and the issues each is trying to address.
Papers presented in this session will cover the most significant aspects of early age behavior of 3D printed concrete. Specifically, the focus will be on the behavior of mixes from the time of extrusion from the nozzle to about 7 days of age. Due to their unique composition, processing methods, and microstructure resulting from layer-by-layer deposition, these mixtures may exhibit higher potential for early-age shrinkage, cracking, and creep. The rate of strength development may also be different compared to mixtures placed using traditional casting methods as it may be affected by the rate of drying and development of bond between the printed layers.
Pozzolans have been used in concrete for centuries, dating back to the Romans who used volcanic ash. Over many centuries, the number of materials that are classified as “pozzolans” has grown to include a variety of materials, both natural and manufactured, and continues to grow. This session aims to provide an overview of emerging pozzolans in the concrete industry. Presentations will be given by researchers and material suppliers with the purpose of informing engineers, contractors, and producers on the impact of these novel materials on the fresh and hardened properties of concrete.
This session will highlight global approaches to low carbon construction policy. The speaker's invited will represent a global perspective across the concrete industry for low carbon policy approaches. The objective of this session is to highlight different global approaches to low carbon construction policy with a focus on cementitious materials. At the end of the session attendees will understand a range of approaches taken to lower the carbon footprint of cement-based construction materials.
As coal plant retirements continue to reduce the availability of current-production fly ash, harvesting of previously disposed ash becomes increasingly important to ensure a ready supply of pozzolanic material for use in the production of concrete.
Honoring R. Douglas Hooton: Fostering the Use of Slag and Other SCMs Engineered Supplementary Cementious Materials
Ramón Carrasquillo, ACI Honorary Member, passed away February 1, 2024. Ramón was a tireless concrete educator, researcher, producer, and consultant for 45 years. Beyond his extensive technical accomplishments and contributions to the concrete industry through research and consulting, Ramón personally impacted many hundreds of individuals through jovial and generous mentorship spanning multiple continents. Ramón's tireless service to ACI can be measured in the numerous individuals he mentored to participate within ACI, his committee work, research and leadership with ACI Board of Directors. An exciting teacher, his dynamic convention sessions filled the room and spilled into the hallway. Though he will be deeply missed, Ramón will forever be remembered, and his legacy will live on. This remembrance of Ramón is a technical session and will cover current topics of concrete.
This session explores Probabilistic Service Life Modeling, highlighting the importance of key input parameters, their measurement, and the impact of parameter variability on model output. Targeting engineers, researchers, and industry professionals in structural engineering, attendees will understand the complex relationship between parameters influencing concrete structure longevity. Learner outcomes include recognizing the significance of variability in service life predictions, identifying critical parameters, learning how service life parameters are obtained, and employing advanced modeling techniques for improved accuracy in assessments.
In order to reach climate goals, there is a need to reduce the embodied emissions of concrete. Utilizing recycled materials, such construction and demolition waste, plastics, and MSWI ashes, can help achieve this while promoting a circular economy. However, there are challenges due to the inherent variabilities and/or potential presence of heavy metals and undesirable chemicals in many recycled materials. Academic and industry researchers, practitioners and students should attend this session to learn about the challenges of and potential solutions for the use of recycled materials in concrete.
The purpose of this session is to offer authors/speakers an open forum for presentation of recent technical information that does not fit into other sessions scheduled for this convention. Any aspect of structural analysis or design, concrete materials science, or construction, manufacturing, use, and maintenance and health monitoring of concrete structures and products can be presented.
This session, sponsored by PRO: An ACI Center of Excellence for Advancing Productivity, will share design collaboration techniques and results with Case Studies of productive concrete outcomes. Speakers from several facets of the concrete construction community will present specific project examples covering an array of project challenges. Projects are varied in type, geography and ownership goals. Attendees will learn that project success is elevated by contractor’s valued contribution.
This session will feature presentations of original, unpublished results from ongoing research projects and leading-edge concrete technology and research throughout the world.
The objective of this session is to present current seismic design practices in different countries around the world, offering insights into both building and bridge seismic design. This session aims to facilitate a comprehensive understanding of the diverse approaches and methodologies employed globally in addressing seismic design challenges. Professionals from industry and academy, researchers, and students interested in the latest practices in seismic engineering are encouraged to attend. This session will provide a valuable platform for knowledge exchange and networking within the seismic design community.
The Slag Cement Association will honor the exceptional use of slag cement in concrete construction during the 2024 Slag Cement in Concrete Construction Awards.
This session is dedicated to researchers and practitioners interested in incorporating High-Strength Reinforcing Steel (HSRS) for seismic applications. The session aims to present the current state of the transition to use HSRS in RC structures located in regions with high seismicity. The session will include concepts, benefits, challenges, and ongoing research to use HSRS for seismic applications.
The objective of this session is to provide a greater opportunity for undergraduate students to present their research at a national meeting. This session will focus on research conducted predominately by undergraduate students. It is expected that this session will draw a new group of students to ACI and the convention. It will also allow students to hear presentations of a slightly less technical nature that are more in keeping with their current level of knowledge regarding concrete.
This year’s ACI 123 Forum brings Baltimore’s engineering savvy to the multi-objective challenge of balancing cost, performance, serviceability, and safety in reinforced concrete design, exploring how advanced materials shift the equilibrium and reveal the curve of diminishing returns. Participants will dive into data-driven trade-off analyses to guide practical decision-making for urban infrastructure. Expect a lively, interactive atmosphere where ideas flow freely and every perspective sharpens our collective understanding. Attendees are invited to pose thought-provoking questions, share real-world experiences, and engage in spirited debate throughout the session. Whether you’re an emerging engineer, seasoned practitioner or just like Old Bay Seasoning, you’ll leave energized with new insights into the delicate art of balancing competing objectives.
Ultra-high-performance concrete (UHPC) is known for its exceptional strength and durability, though its use of high binder volumes and steel fiber reinforcement has raised concerns about carbon intensity on a per-unit basis. However, UHPC enables efficient structural designs, reduces material use, minimizes life-cycle maintenance, and extends service life, offering a strong case for sustainability when viewed through life-cycle assessment (LCA). This forum will feature brief presentations from experts who will introduce essential UHPC sustainability concepts, addressing both its environmental and structural benefits to set the stage for a dynamic discussion. Industry leaders, researchers, and designers will explore UHPC’s potential as a sustainable building material by examining project-level LCA and the integration of structural design with environmental impact.
As the global construction industry increasingly turns to prefabricated concrete systems for efficiency, sustainability, and resilience, new challenges and opportunities are emerging, especially in seismic, industrial, and marine environments. This International Session brings together leading experts from academia and industry to explore cutting-edge applications of precast concrete in high-demand structural contexts.
The session builds on the themes introduced during the International Lunch where Prof. Marco Menegotto addresses historical and forward-looking perspectives on the evolution of prefabricated concrete.
Topics will include near-damage-free seismic performance using all-precast column bents, innovative seismic protection strategies for large-scale industrial buildings, and the application of precast concrete in ports and coastal structures. Attendees will gain a global perspective on how prefabrication is being adapted to meet the demands of modern infrastructure.
This session will explore cutting-edge advancements in using Artificial Intelligence (AI) and data analytics for monitoring and evaluating concrete structures. As concrete remains a critical component of global infrastructure, effective monitoring methods are essential to ensure safety, performance, and longevity. Presentations will delve into AI-driven approaches, such as machine learning models for real-time damage detection, computer vision techniques for crack analysis, and data-driven predictive maintenance strategies tailored for concrete assets. The session will highlight practical applications, including case studies where AI has significantly improved the assessment and management of concrete structures. Attendees will gain insights into overcoming the unique challenges of concrete monitoring, leveraging AI tools to enhance reliability, reduce maintenance costs, and ensure the structural integrity of these essential assets.
Presentations will provide state-of-the-art information regarding workability and reactivity of low-carbon binders. Recently, many low-carbon binders have been developed from thermal, mechanochemical, leaching, and CO2 uptake processes. These can behave differently from conventional supplementary cementitious materials. High reactivity materials can result from such processes, but they often have high specific surface, and thus have high water demand. Thus, for engineered supplementary cementitious materials and other similar binders, balancing workability and reactivity is key. Presentations will address issues in designing mixtures containing low carbon binders in relation to balancing the requirements to achieve acceptable workability in one hand, and in the other hand, achieving the necessary reactivity. Blended materials, further processing, modifications of w/cm, use of specific admixtures, grinding aids, and other related strategies are of interest. The audience would be researchers, material suppliers, and practitioners.
The concrete industry has significant number of stakeholders. Therefore, this session is intended to bring key stakeholders together and hear directly from them about what is needed to reach their carbon-reduction goals, some of the challenges they are facing, how to facilitate sector partnerships, beyond simply knowing about concrete PCRs, LCAs, and EPDs.
This session honors the remarkable legacy of Luke and Billie Snell, whose lifelong dedication to preserving the history of concrete has left an indelible mark on the industry. More importantly, their gift is in not only telling the stories, but their manner that compels a connection way beyond the technical core of the subject. Committee 120 History has invited multiple concrete experts to present material originally researched and published by the Snells. Attendees will explore key milestones in concrete’s history, including the Oldest Concrete Street, the Erie Canal, the Hoover Dam, Graveyard Concrete, the Start of Certification, and Concrete in the Bible. These captivating stories highlight the significance of concrete in shaping modern infrastructure and culture, offering a deeper appreciation for its pivotal role in history, and the storytellers that keep their history alive.
This session explores innovative approaches to improving the fresh-state and early-age performance of 3D-printed concrete. Topics include novel testing methods for printability, strategies for integrating coarse aggregate, bond development between layers, and self-healing capabilities. Presentations also address specialized applications, such as bioactive marine concretes, magnesium-based binders for space construction, and AI-enhanced mix design. Together, these studies provide critical insights into enhancing print quality, durability, and sustainability of 3D concrete printing across a range of environments.
The objective of this session is to explore the latest advancements in emerging technologies that are enhancing the accuracy, reliability, and efficiency of finite element analysis (FEA) in the simulation and design of structural concrete. The focus will be on improving simulation techniques, material models, and computational tools, thereby enhancing the confidence of engineers and researchers in using FEA for concrete structures. The session aims to bridge the gap between cutting-edge technology and practical application in structural concrete, providing solutions to common challenges faced in the modeling and analysis of complex concrete systems.
First and second place winners of the Excellence in Concrete Construction Awards program will give a presentation on their winning project.
Each year the Maryland ACI Chapter presents awards to concrete construction projects that exemplify excellence. We are pleased to present the following projects recognized for their excellence in concrete construction.
Ultra-High Performance Concrete (UHPC) is a novel class of concrete that has superior mechanical properties and durability characteristics. Although UHPC exhibits exceptional performance at room temperature, the behavior of UHPC under fire conditions can be of concern due to faster degradation of strength and modulus properties with temperature, as well as its high susceptibility to fire-induced spalling. Since UHPC is a new construction material, there is limited information on its fire performance. This session will invite research and industry groups to share information on the fire performance of UHPC with students, faculty, researchers, and practitioners. Attendees will learn about the current fire problems in UHPC, recognize knowledge gaps and research needs, and practical solutions for improving UHPC fire performance.
This session will provide attendees with a comprehensive understanding of how advanced material characterization techniques, commonly used in academic research, can be effectively applied to real-world forensic investigations of concrete failures. The focus will be on identifying the root causes of issues in both new construction and existing concrete structures. Presentations will highlight how these techniques can uncover underlying problems; help mitigate risks and improve the long-term durability of concrete. Participants will gain valuable insights into how material science tools can diagnose concrete issues, provide actionable solutions, and ultimately prevent failure. This session is designed for professionals across multiple disciplines, including consultants, contractors, engineers, researchers & scientists, material Scientists. In general, anyone involved in the design, construction, and maintenance of concrete structures will benefit from attending.
This session will explore how to successfully use blended cements in concrete construction, from the perspectives of researchers, producers, and contractors. While much of the US has recently seen the introduction of Type IL portland-limestone cements, Types IP, IS, and IT cements containing slag cement and/or pozzolans may become more widely available in the future. Speakers will share insights on successfully testing, producing, placing, and finishing concrete mixtures containing the next generation of blended cements to meet project performance requirements.
Structural engineers face growing pressure to minimize slab thickness for cost and carbon reduction while ensuring adequate deflection performance. Limited resources and minimal guidance from building codes on long-term deflection methods add to the challenge. This session, designed for practicing engineers but valuable to academics and contractors as well, provides insights from experienced professionals on best practices in long-term slab deflection analysis. Attendees will gain practical knowledge to enhance their design decisions.
As Ultra-High Performance Concrete (UHPC) technology continues to advance, there is an increasing need for innovative methods to characterize and assess its unique material properties properly. Sometimes conventional testing techniques used for conventional concrete and FRCs are inaccurate for UHPC, leading to potential discrepancies in the performance assessment of the material. This session will focus on novel approaches tailored specifically for UHPC characterization, highlighting advancements that address the current challenges and improve testing accuracy. Experts from national and international research groups, material suppliers, and industry professionals will present the latest methods for UHPC testing of mechanical properties such as compression and tension, fresh properties, and durability. The session aims to provide essential insights into UHPC material characterization, contribute to design practices, and ultimately improve the longevity and reliability of UHPC applications.
The purpose of this session is to offer authors/speakers an open forum for presentation of recent technical information that does not fit into other sessions scheduled for this convention. Any aspect of structural analysis or design, concrete materials science, or construction, manufacturing, use, and maintenance and health monitoring of concrete structures and products can be presented.
Awarded authors of papers published in 2024 will be recognized by ACI President Maria Juenger and will present the winning papers. Awarded categories include: the ACI Concrete International Award (no presentation scheduled), the ACI Symposium Volumes Award, the Mete A. Sozen Award for Excellence in Structural Research, the Wason Medal for Materials Research and the Wason Medal for Most Meritorious.
Practical Applications of 3D Printing," is designed to provide ACI Attendees actionable insights into the rapidly evolving field of 3D printing in construction. Led by 3D printing company representatives with on-site printing experience, this session will dive into diverse topics such as materials, equipment, and standardizing protocols for training, all essential for achieving operational excellence in 3D-printed construction projects. Attendees will gain a clear understanding of current challenges and successes in the field and leave with a vision of the colleaborative effort needed to support 3D printing as a transformative construction tool.
This session, sponsored by PRO: An ACI Center of Excellence for Advancing Productivity, will share progress from PRO’s Task Groups that address key barriers to concrete construction productivity. Attendees will learn about key barriers that hamper concrete construction productivity. Attendees will gain access to solutions project stakeholders can deploy to improve project results and enhance owner value.o support 3D printing as a transformative construction tool.
The session will begin with a general overview of the status of the current 2019 edition of the ACI 318 Building Code Requirements for Structural Concrete. This will be followed by a review of the code update activities that the ACI 318 Code committee has been working on for the past five years. The final revisions to the Code will be completed in late 2024, and the revised provisions will become official upon publication of ACI 318-25 in early 2025. Although several rounds of review and revisions remain to be completed, including a 45-day public comment period in the spring of 2024, at this time it is possible to discuss general trends that might be expected in the revised ACI 318-25 Code provisions. This session will be presented by the current chair of the ACI 318 committee, and a question-and-answer period will follow the presentation.
This session is sponsored by NEU: an ACI Center of Excellence for Carbon Neutral Concrete. The session will provide information on existing and new materials and technologies that have shown strong potential to play a significant role in CO2 emissions reductions in the concrete industry and considerations for the wise use of materials and design aspects towards reducing CO2 emissions in concrete construction. This session will be geared toward all stakeholders, researchers, and students in the concrete industry.
This session is one of 14 sessions that form the 16th Fiber Reinforced Polymer Reinforced Concrete Structures (FRPRCS-16) Symposium. It is co-sponsored by ACI Committee 440 and the International Institute for FRP in Construction (IIFC) for the purpose of advancing the understanding and application of FRP composites in civil infrastructure to serve the engineering profession and society. FRPRCS was first held in conjunction with the ACI 1993 Spring convention in Vancouver, British Columbia, Canada. Since 1993, FRPRCS has evolved into a prestigious and reputable international conference that has been held 15 times including 5 times in conjunction with ACI: British Columbia, Canada (1993); Baltimore (1999); Kansas City (2005); Tampa (2011); and Anaheim (2017).
Nanoparticles (such as nanosilica, nanoclay, etc.) are used as viscosity modifying agents (VMA) or thixotropic agents to alter rheological properties of 3D printed concrete (3DPC). Nanoparticles can also act as seeds for CSH nucleation to accelerate cement hydration. As a result, nanoparticle-modified 3DPC can possess not only appropriate extrudability and flowability but also proper segregation resistance, shape retention, and buildability for consistent and quality printing. Nanoparticles are also used to densify microstructure and improve the interlayer bond of 3DPC, thus increasing strength and enhancing durability of the 3DPC products. The objectives of this technical session are to (i) summarize recent progress on the use of nanoparticles in 3DPC, (ii) better understand the potential roles of nanoparticles in enhancing the properties of 3DPC, and (iii) discuss perspectives and challenges with the use of nanoparticles in 3DPC.
This session is one of 14 sessions that form the 16th Fiber Reinforced Polymer Reinforced Concrete Structures (FRPRCS-16) Symposium. It is co-sponsored by ACI Committee 440 and the International Institute for FRP in Construction (IIFC) for the purpose of advancing the understanding and application of FRP composites in civil infrastructure to serve the engineering profession and society. FRPRCS was first held in conjunction with the ACI 1993 Spring convention in Vancouver, British Columbia, Canada. Since 1993, FRPRCS has evolved into a prestigious and reputable international conference that has been held 15 times including 5 times in conjunction with ACI: British Columbia, Canada (1993); Baltimore (1999); Kansas City (2005); Tampa (2011); and Anaheim (2017).
The objective of this session is to present best practices for incorporating research into concrete education. The scope of the session is not limited to higher education and the audience will benefit from hearing how research and concrete related topics can also be incorporated into K-12 curricula. The main learning objective is to take home creative ways to establish meaningful research opportunities for students in the field of concrete materials and structures. The session should be attended by students, educators, designers, builders, and code/specification authorities.
This session will focus on machine learning/artificial intelligence challenges that are specific to the concrete industry. Attendees are concrete data scientists, educators, students as well as contractors and producers. These challenges include, for example, the wide variety of materials/features and the quality and quantity of data. It will also discuss possibilities of public curated databases.
This session will cover recently emerging data- and machine learning (ML)-driven innovations of reinforced concrete (RC) structures. The use of data and ML for RC structure is not monolithic. This new approach can be applied to diverse length scales from the entire infrastructure, to individual structural elements, to millimeter crack-scale, and even to micro/nano-scale fundamental physics. Data play as a critical foundation and the prediction accuracies are subject to considerable uncertainty. Therefore, data quality issues and uncertainty quantifications of the data- and ML-driven approaches to RC structures must be addressed along with the predictions. This theme of the proposed session is aligned with the mission of ACI-ASCE 447 committee to benefit broad practicing engineers and researchers in the era of data, ML, and computing.
This session is one of 14 sessions that form the 16th Fiber Reinforced Polymer Reinforced Concrete Structures (FRPRCS-16) Symposium. It is co-sponsored by ACI Committee 440 and the International Institute for FRP in Construction (IIFC) for the purpose of advancing the understanding and application of FRP composites in civil infrastructure to serve the engineering profession and society. FRPRCS was first held in conjunction with the ACI 1993 Spring convention in Vancouver, British Columbia, Canada. Since 1993, FRPRCS has evolved into a prestigious and reputable international conference that has been held 15 times including 5 times in conjunction with ACI: British Columbia, Canada (1993); Baltimore (1999); Kansas City (2005); Tampa (2011); and Anaheim (2017).
The session will focus on the recent developments in the understanding of creep and shrinkage behavior at early ages. Of particular interest will be new concrete types and additives, such as UHPC, 3-D printing, expansive additives, new cements (portland, blended, alternative), SCMs, and admixture technology. Topics of interest include test methods and measurements, material influences, material models, applications, and mitigation. Attendees should include researchers, designers, consultants, contractors, students, educators, and contractors. The mitigation of cracking at early age is a topic with broad interest.
Ultra-high-performance concrete (UHPC) has been extensively researched and implemented in various infrastructure applications for its superior structural and durability performance. Despite their successful structural level demonstrations, fiber dispersion and orientation remain a concern in the UHPC structure design and applications. The challenge of the fiber orientation in UHPC is due to the fact that it is sensitive to the casting method, size and geometry of element, rebar arrangement, and rheological properties of UHPC mix. The purpose of the session is to present the current efforts on quantifying and characterizing the fiber orientation in real UHPC structures, understanding how casting procedures affect the fiber orientation, and demonstrating impact of fiber orientation on UHPC structure design and performance.
Ultra-high-performance concrete (UHPC) has been extensively researched and implemented in various infrastructure applications for its superior structural and durability performance. Despite their successful structural level demonstrations, fiber dispersion and orientation remain a concern in the UHPC structure design and applications. The challenge of the fiber orientation in UHPC is due to the fact that it is sensitive to the casting method, size and geometry of element, rebar arrangement, and rheological properties of UHPC mix. The purpose of the session is to present the current efforts on quantifying and characterizing the fiber orientation in real UHPC structures, understanding how casting procedures affect the fiber orientation, and demonstrating impact of fiber orientation on UHPC structure design and performance.
Fiber reinforcement is the most effective way of improving the resistance of concrete to cracking, but little is known of the benefits of fiber reinforcement on long term durability. The purpose of this session is to bring together experts from around the world to discuss case studies where fiber reinforcement enhanced long term durability, to learn from real life situations and to lay the foundation for Life Cycle Engineering Analysis with fiber reinforced concrete. Presentation topics will be related to the benefits of using fibers to enhance long term performance of concrete with and without conventional reinforcement. Case studies where fiber reinforced concrete (FRC), or ultra high-performance concrete (UHPC) were used for durable structures covering a broad range of applications around the world will be presented. Contractors, material suppliers, engineers, architects, researchers, and scientists will benefit from this session.
This session is one of 14 sessions that form the 16th Fiber Reinforced Polymer Reinforced Concrete Structures (FRPRCS-16) Symposium. It is co-sponsored by ACI Committee 440 and the International Institute for FRP in Construction (IIFC) for the purpose of advancing the understanding and application of FRP composites in civil infrastructure to serve the engineering profession and society. FRPRCS was first held in conjunction with the ACI 1993 Spring convention in Vancouver, British Columbia, Canada. Since 1993, FRPRCS has evolved into a prestigious and reputable international conference that has been held 15 times including 5 times in conjunction with ACI: British Columbia, Canada (1993); Baltimore (1999); Kansas City (2005); Tampa (2011); and Anaheim (2017).
This session is one of 14 sessions that form the 16th Fiber Reinforced Polymer Reinforced Concrete Structures (FRPRCS-16) Symposium. It is co-sponsored by ACI Committee 440 and the International Institute for FRP in Construction (IIFC) for the purpose of advancing the understanding and application of FRP composites in civil infrastructure to serve the engineering profession and society. FRPRCS was first held in conjunction with the ACI 1993 Spring convention in Vancouver, British Columbia, Canada. Since 1993, FRPRCS has evolved into a prestigious and reputable international conference that has been held 15 times including 5 times in conjunction with ACI: British Columbia, Canada (1993); Baltimore (1999); Kansas City (2005); Tampa (2011); and Anaheim (2017).
This session is one of 14 sessions that form the 16th Fiber Reinforced Polymer Reinforced Concrete Structures (FRPRCS-16) Symposium. It is co-sponsored by ACI Committee 440 and the International Institute for FRP in Construction (IIFC) for the purpose of advancing the understanding and application of FRP composites in civil infrastructure to serve the engineering profession and society. FRPRCS was first held in conjunction with the ACI 1993 Spring convention in Vancouver
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