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Concrete structures respond better under elevated temperatures than wooden and steel structures because of their non-flammability and low thermal conductivity [1], [2].Past research on medium-strength and high-strength concrete has shown that at ambient temperature [3], [4], the reaction between ordinary Portland cement (OPC) and …
The ultra-high-performance concrete (UHPC), developed in France in late 1990s under the name reactive powder concrete (RPC), is currently used by the Federal …
ML methods alone can only predict the performance of concrete with a given parameter combination; they cannot specify a combination with better performance (Wang and Jia, 2020). In multi-objective optimization research in engineering fields, the GA proposed by Holland is the most widely used method (Hamian et al., 2018).
Ultra-high performance concrete (UHPC) is an advanced composite building material that exhibits exceptional hardened and durability characteristics, including a compressive strength >150 MPa, flexural strength of more than 50 MPa and self-compactness [1], [2], nearly 16 times greater than normal concrete [3], [4], exhibiting …
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High-performance concrete (HPC) is a type of concrete that is engineered to possess superior strength, durability, and other performance characteristics compared …
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Abstract. 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 ...
Strength is one of the most important properties of high performance concrete (HPC). Effects of supplementary cementitious materials (SCMs), aggregate, …
Green concrete is defined as a concrete which uses waste material as at least one of its components, or its production process does not lead to environmental destruction [4]. It should also have high performance and life cycle sustainability. In other words, green concrete is an environment friendly concrete.
CO 2 utilization and sequestration in ready-mix concrete-A review. ... In Qian's report (Qian et al., 2018), CO 2 was defined as an admixture due to CO 2 dissolving into mixing water and resulting ...
Performance Concrete Flooring Company has 1 locations, ... separately incorporated Better Business Bureau organizations in the US and Canada, and BBB Institute for Marketplace Trust, Inc. All ...
ACI Concrete Terminology. High-performance concrete (HPC) is concrete that has been designed to be more durable and, if necessary, stronger than conventional …
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Ultra-high performance concrete (UHPC) is a cutting-edge pozzolan composite material composed of a high proportion of discontinuous internal reinforcing …
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Starting in the 1980s, engineers designed a material — high-performance concrete (HPC) — that did just that. "High-performance concrete developed in the 1980s when people realized that the capillary pores can be reduced in part by reducing the water-to-cement ratio," says Ulm. "With the addition of certain ingredients as well, this ...
Ultra High Performance Concrete (UHPC) is a new class of concrete that has been developed in recent decades for its exceptional properties of strength and durability. This high performance concrete can be utilized in structural rehabilitation and accelerated bridge construction in addition to several other applications. Read on to learn …
Metakaolin: MK is observed as one of the most quality enhancing SCMs in both high strength and high performance concretes [26] and can improve the strength of concrete [27] owing to its ability to transform portlandite into C-S-H gel by means of pozzolanic reaction [28].It was found that 5 wt% replacement of OPC by MK led to 6.56% …
1. Introduction. Concrete, a heterogeneous quasi-brittle composite material, has become the world's most plentiful and frequently used construction material due to its low price, high performance, and other advantages.
Reading time: 2 minutes. There are several advantages of high performance concrete (HPC) application in building construction …
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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 …
UHPC Concrete is a combination of the following ingredients with varying quantities of each: Fine silica sand: Fine sand comprises about 40% of the total UHPC by weight. Portland Cement: Generally, high-quality UHPC contains about 29% Portland cement. For precast concrete deck panels where early mold removal is required, Type I …
The study by Thangapandi et al. [97] further confirmed that by replacing the cement with 10% alcofine and 0.5% zinc oxide, the modified LCHPCC showed better performance in compression, flexural, and split tensile strength tests exhibited the highest mechanical properties. In addition, by replacing cement with alccofine and zinc oxide, the ...
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Despite major superiority of the conventional ultra high-performance concrete, since its binding system is the same as ordinary concrete, some of its properties such as thermal and acid resistance is somewhat similar to ordinary concrete. Yet, its better performance can be attributed to higher compaction and reduced overall …
How Helix Micro Rebar™ Makes High-Performance Concrete Better. The twisted shape of Helix provides improved performance in Ultra-High-Performance concrete applications. It is proven for use in exterior cladding and meets the New York State DOT requirements for UHPC toppings. Manufactured in Michigan, Helix products are fully Buy America ...
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.
Furthermore, performance of concrete also improves and abrasion resistance in concrete increases [75]. Basically, those effects are provided by TiO 2 in UHPC and concrete due to TiO 2 is ability to act as glass layer or pigment outside the concrete particles and also in the microstructure of UHPC and concrete. Those layers …
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