Ultra-high performance concrete (UHPC) is a class of concrete with compelling properties that lie outside of those for which existing structural design guidance was developed. The Federal Highway Administration's efforts to advance the state of the practice related to UHPC have recently focused on facilitating the development of formal U.S ...
4. INTRODUCTION Concrete is the most widely used construction material in India with annual consumption exceeding 100 million cubic meters. High performance concrete is a concrete in which certain characteristics are …
The American Concrete Institute (ACI) is a leading authority and resource worldwide for the development and distribution of consensus-based standards, technical resources, educational programs, certification programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a …
The requirement for high-performance concrete has increased day by day due to its better performance. Due to its strength, durability, and high modulus of elasticity, high-performance concrete has predominantly been employed in constructing large-scale civil engineering structures, e.g., tunnels, bridges, pavements, and high-rise buildings. The various …
A notable example of such concrete is ultra-high-performance concrete (UHPC), which finds extensive use in building components and bridges due to its remarkable properties …
Cement: Chemical and physical properties of cement can help in selecting the desired cement to produce high-performance concrete. For instance, cement with lower C3A is the most desired type of cement to produce high-performance …
Ultra high performance concrete (UHPC) is a milestone in concrete tech-nology and application. It permits the construction of both more slender ... Michael Schmidtstudied civil engineering and gained his doc- toral degree at TU Hannover in 1977. After 20 years of R&D in the German cement industry
Advantages of High Performance Concrete. Stronger than regular concrete – High Performance Concrete (HPC) is stronger than ordinary concrete, meaning it can withstand more pressure and stress without breaking or cracking.; Resists …
UHPC is a relatively new generation of cementitious material with very high strength, ductility and durability [7].Fig. 1 shows that, UHPC strengthened with fiber can be treated as a combination of three concrete technologies of self-compacting concrete (SCC), fiber reinforced concrete (FRC) and high-performance concrete (HPC) [8].French interim …
Ultra-High Performance Concrete Introduction Advances in the science of concrete materials have led to the development of a new class of cementitious composites, namely ultra-high performance concrete (UHPC). The mechanical and durability properties of UHPC make it an ideal candidate for use in developing
Modeling seismic performance of high-strength steel–ultra-high-performance concrete piers with modified Kent–Park model using fiber elements Zhen Wang1,2, Jingquan Wang1,2, Tongxu Liu1,2 and Fan Zhang1,2 Abstract The seismic performance of ultra-high-performance concrete–high-strength steel pier was studied using fiber elements,
This study develops a novel Ultra-High Performance Concrete (UHPC) with outstanding mechanical properties, good workability, low curing maintenance, and excellent performance in sustaining long-term load to specially designed for its potential application in airport pavement. The as-developed UHPC contains a mixed portion of fine and coarse ...
"Assessing Viscosity of Ultra-high-performance Concrete (UHPC) using a Video Taken During Mixing," Measurement, 2022, 110809. •S. Mahjoubi, W. Meng, Y. Bao, "Auto-tune learning framework for prediction of flowability, mechanical properties, and porosity of ultra-high-performance concrete (UHPC)," Applied Soft Computing, 2022, 115, p ...
The mechanical properties of UHPC makes it a perfect material for applications where strength is a primary design criterion and concrete structural element sizes can be lowered to make them smaller, thinner, and more aesthetically acceptable [22], [23].It is commonly composed of Portland cement, fine aggregate, SF, a water-reducing additive with a high range …
Sun, H. et al. Tunning matrix rheology and mechanical performance of ultra-high performance concrete using cellulose nanofibers. Nanotechnology Reviews 11(1), 1570–1582.
This report provides information on the structural design of bridge components, a well-established field that is built on the fundamentals of engineering mechanics, the behaviors …
Ultra-high performance concrete has a discontinuous pore structure that reduces liquid ingress, significantly enhancing durability compared to conventional and high-performance concretes. UHPC is being considered for use in a wide variety of highway infrastructure applications. The high compressive and tensile strengths allow for the redesign ...
The future work in high-performance and sustainable concrete materials and structures could focus on the following aspects: 1) Pushing the performance envelope of high/ultra-high-performance concrete materials towards extreme mechanical and durability performance (Lao et al., 2023); 2) Designing sustainable concrete materials to achieve ...
A: Ultra-high performance concrete (UHPC) is a class of concrete that combines together many of the recent advances in concrete science to create a material with far superior properties. In the fresh state it is more fluid than regular concrete thus making it easier to place into the formwork. In the hardened state it is much stronger than ...
HPC can be defined as a concrete in which utmost care has been taken in all necessary operations in order to give the concrete the most appropriate performance properties in the environment in which it is placed [1].HPC usually refers to concrete with superior mechanical and durability properties [2], or a concrete with 28d compressive strength above 70 to 80 MPa, …
Carbon capture in ultra-high performance concrete (UHPC) using fresh state carbon curing. ... Replacement of cement with GGBS further increase the DOC values. Carbon uptake was highest (80 kg CO 2 per m 3 of UHPC) when using 30% by wt. GGBS, but decreased with higher GGBS content. The findings of this study are envisaged to provide a new ...
the customer's needs for high performance concrete. Lafarge was the first to introduce this type of cement in the North American market in 1983. Lafarge SFCement is produced by blending portland cement and silica fume. Silica fume, made up of spherical particles 100 times finer than cement particles,
High Performance Cement FastSet™ Concrete Mix is a rapid hardening structural concrete for use in construction and repair of pavements, driveways, floors, bridge decks, highways, sidewalks, and concrete parking lots. Exceeds the requirements of ASTM C 928 R 3 for concrete repair materials.
However, the matrix of self-sensing concrete is mainly ordinary cement paste, mortar, or concrete, expressing relatively weak characteristics of strength, strain-hardening or multiple cracking, and durability than certain high-performance cementitious composites, represented by ultra-high performance concrete (UHPC) [24, 25].High-performance structural …
1991 (ISTEA) legislation, the Federal Highway Administration's (FHWA) High Performance Concrete Technology Delivery Team (HPC TDT) motivated and helped State DOT's to build more economical and durable bridges using high performance concrete. The TDT, created in 1997, assisted 13 States in design and construction of HPC bridges.
Features of High-Performance Concrete. Compressive strength > 80 MPa,even up to 800 MPa; High-performance concrete is quite brittle but the introduction of fibers and can improve ductility. High durability; Water binder ratio (0.25-0.35), therefore very little free water;
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Ultra-high-performance concrete (UHPC) is defined as 'concrete that has a minimum specified compressive strength of 150 MPa with specified durability tensile ductility and toughness requirements; fibers are generally included to achieve specified requirements", as per ACI 239R-18. Commonly, the UHPC consists ...
The significance of ChatGPT in the realm of Ultra-High-Performance Concrete (UHPC) lies at the confluence of artificial intelligence, natural language processing, and materials science [72][73][74 ...
Ultra-high-performance concrete is widely used in bridge strengthening to improve mechanical performance and bridge durability. Interfacial bonding performance is a key factor …