Development of Ultra-Lightweight and High Strength Engineered Cementitious Composites

Journal of Composites Science

Zhitao Chen¹  Junxia Li¹  En-Hua Yang¹ 

[1] School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;

关键词: cenosphere;    ternary binder;    engineered cementitious composites;    ultra-lightweight;    high strength;   

DOI  :  10.3390/jcs5040113

来源: DOAJ

【 摘 要 】

In this study, ultra-lightweight and high strength Engineered Cementitious Composites (ULHS-ECCs) are developed via lightweight filler incorporation and matrix composition tailoring. The mechanical, physical, and micromechanical properties of the resulting ULHS-ECCs are investigated and discussed. ULHS-ECCs with a density below 1300 kg/m³, a compressive strength beyond 60 MPa, a tensile strain capacity above 1%, and a thermal conductivity below 0.5 w/mK are developed. The inclusion of lightweight fillers and the variation in proportioning of the ternary binder can lead to a change in micromechanical properties, including the matrix fracture toughness and the fiber/matrix interface properties. As a result, the tensile strain-hardening performance of the ULHS-ECCs can be altered.

【 授权许可】

Unknown