Impact Splitting Tensile Properties of Fly Ash-Recycled Aggregate Concrete

被引：0

作者：

Zhang, Hua ^{[1
]}

Li, Xuechen ^{[1
]}

Pan, Qi ^{[1
]}

Ren, Yunhao ^{[1
]}

Liu, Xinyue ^{[1
]}

Zheng, Sizhe ^{[1
]}

Cao, Zhenxing ^{[1
]}

机构：

[1] Hohai Univ, Coll Civil & Transportat Engn, Nanjing 210098, Jiangsu, Peoples R China

来源：

JOURNAL OF MATERIALS IN CIVIL ENGINEERING | 2024年 / 36卷 / 12期

关键词：

Impact splitting tensile properties; Fly ash; Recycled aggregate concrete (RAC); Split Hopkinson pressure bar (SHPB); ZWT constitutive model; MAGNESIUM PHOSPHATE CEMENT; PORTLAND-CEMENT; RATIO; PERFORMANCE; STRENGTH; AGE;

D O I：

10.1061/JMCEE7.MTENG-17176

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper aims to study the impact splitting tensile properties of fly ash-recycled aggregate concrete (FARAC). The splitting tensile tests of FARAC with different replacement rates of recycled aggregate (0%, 30%, 50%, 100%) and different fly ash contents (0%, 10%, 20%, 30%) were carried out by using split Hopkinson pressure bar (SHPB) under different impact pressures (0.30 MPa, 0.35 MPa, 0.40 MPa, 0.45 MPa). The results show that the dynamic tensile strength of concrete with 30% recycled aggregate replacement rate and 10% fly ash content can be higher than that of natural concrete. It is also found that the increase of impact pressure value will enhance the dynamic tensile strength of FARAC. Eventually, the dynamic constitutive model based on ZWT constitutive model was established by considering the material damage, which can excellently forecast the dynamic stress-strain curve of FARAC and the dynamic mechanical properties.

引用

页数：14

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