Abstract

Cracking in high-performance self-consolidating concrete (HP-SCC) is a significant concern that must be addressed during design and construction. HP-SCC is a concrete type reinforced with high-strength fibers, such as steel or synthetic fibers, to enhance its mechanical properties. HP-SCC is known for its high flowability and ability to self-consolidate without vibration, exceptional strength, durability, and crack resistance compared to conventional concrete. HP-SCC is highly durable and can withstand various environmental conditions and aggressive exposures. Combining high-strength fibers and advanced cementitious materials in HP-SCC improves resistance to chemical attacks, freeze-thaw cycles, abrasion, and impact. Utilizing an expansive agent (EA), shrinkage-reducing admixture (SRA), and saturated lightweight sand (LWS) ensures HP-SCC with a low risk of cracking. This study investigates using different types of EAs to improve compressive and flexural properties. Furthermore, the study investigates the combination of fiber, EA, and LWS in promoting high resistance to autogenous and total shrinkage. The dense microstructure of HP-SCC also contributes to its durability by reducing permeability and minimizing the ingress of moisture and harmful substances.

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