Work

Mechanical properties of hybrid fibers engineered cementitious composites containing ceramic wastes exposed to elevated temperatures

Year: 2025

Type: article

Abstract: This study investigated the compressive and tensile performance of hybrid fibers reinforced engineered cementitious composites (ECC) containing ceramic wastes after and under elevated temperatures, respectively. Four temperatures of 20, 200, 400, and 600 ℃ were employed. The effects of ceramic polishing powder, ceramic sand and basalt fibers on the mechanical properties of hybrid fibers reinforced ECC were examined. The residual compressive strength and elastic modulus declined continuously in polyethylene (PE)-ECC as the temperature rose, while increased slightly in hybrid fibers reinforced ECC after 200 ℃. The tensile strength and ultimate tensile strain of both ECCs deteriorated sharply when the temperature exceeded 200 ℃. Tensile failure modes changed from multiple cracking to single one. Replacement of fly ash by ceramic polishing powder resulted in variations of 9.3 %, 21.3 %, −18.1 % and −24.6 % in compressive strength of ECC at 20 and after 200, 400 and 600 ℃, respectively. Replacement of quartz sand by ceramic sand resulted in reductions of 8.6 %, 21.7 %, 58.0 % and 67.3 % in compressive strength of ECC at 20 and after 200, 400 and 600 ℃, respectively. Basalt fibers could improve the tensile strength of ECC by 16.6 %, 20.6 % and 56.3 % at 200, 400 and 600 ℃, respectively.

Source: Case Studies in Construction Materials

DOI: 10.1016/j.cscm.2025.e04657

Authors: Yan Xiong, Liangzheng Lin, Shuai Fang, Yi Yang

Institutions: State Key Laboratory of Subtropical Building Science, South China University of Technology

Language: English

Topic: Fire effects on concrete materials

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Responsible consumption and production

Open Access status: gold

Estimated APC paid: $2,660