Compressive behavior of polyvinyl alcohol engineered cementitious composites incorporating steel slag as aggregate

被引：12

作者：

Li, Tong ^{[1
]}

Wang, Qinghe ^{[1
]}

Ren, Qingxin ^{[2
]}

机构：

[1] Shenyang Jianzhu Univ, Sch Civil Engn, Shenyang 110168, Peoples R China

[2] Foshan Univ, Sch Transportat Civil Engn & Architecture, Foshan 528225, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2024年 / 413卷

基金：

中国国家自然科学基金;

关键词：

Engineered cementitious composites (ECC); Steel slag replacement ratio; PVA fiber content; Compressive behavior; Microstructure; FIBER-REINFORCED-CONCRETE; MECHANICAL-PROPERTIES; COARSE AGGREGATE; STRAIN CURVES; PERFORMANCE; PVA; STRESS; VOLUME; ECC; DURABILITY;

D O I：

10.1016/j.conbuildmat.2024.134878

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Disposal of the steel by-product steel slag (SS) negatively impacts the environment. The use of SS as an aggregate in engineered cementitious composites (ECC) can prevent pollution and mitigate natural aggregate depletion. In this study, river sand (RS) was replaced by SS with maximum size of 4750 mu m, and the properties of ECC with varying contents of SS and polyvinyl alcohol (PVA) fiber were investigated. SS changed the hydration product composition and enhanced the bond stress between the fiber and cementitious matrix, increased the bulk specific density and compressive strength, and reduced the porosity. ECC containing only SS and with high PVA fiber content exhibited superior performance. A 25% SS replacement ratio and 2% PVA fiber content improved the compressive strength, ductility index, and toughness index to 47.5 MPa, 1.45, and 2.60, respectively.

引用

页数：16

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