Experimental study on the triaxial compression mechanical performance of basalt fiber-reinforced recycled aggregate concrete after exposure to high temperature

• DOI: 10.1016/j.cscm.2024.e03026
• Publication Date: 2024-03-05T08:26:38Z
• Authors: Xianggang Zhang; Youchuan Shen; Yuhui Fan; Xiang Gao
• Keywords: Overburden pressure; Basalt fiber

The use of basalt fiber-reinforced recycled aggregate concrete (BFRRC) can effectively treat waste and reduce the consumption natural resources. BFRRC is often in complex triaxial compression engineering applications may exposure to high temperature conditions. To evaluate conventional mechanical performance after temperature, 324 cylindrical specimens were produced. designed fabricated by varying several experimental parameters: coarse replacement ratio, fiber dosage, lateral confining pressure. previously exposed subjected tests effects various parameters on indexes analyzed. results show that peak stress elastic modulus all raise with greater dosage pressure but decrease higher ratio temperature. maximum increase 352.45% 224.59%, respectively. strain has two variation trends gradual rising. And gradually grows increasing. however, does not exert considerable impact strain. 132.22%. research provides a scientific basis for performance, fire resistance design, post-disaster assessment BFRRC, promotes popularization application building structures.