Influence of magnetic water on early-age shrinkage cracking of concrete

被引：63

作者：

Wei, Huinan ^{[1
]}

Wang, Youkai ^{[1
]}

Luo, Jianjun ^{[2
]}

机构：

[1] Henan Polytech Univ, Dept Civil Engn, Jiaozuo 454000, Peoples R China

[2] Beijing Jiaotong Univ, Sch Civil Engn, Beijing 100044, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 147卷

基金：

中国国家自然科学基金;

关键词：

Magnetic water; Concrete; Shrinkage cracking; Ring-test method; Flat-test method; STRENGTH;

D O I：

10.1016/j.conbuildmat.2017.04.140

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This research investigates the shrinkage cracking of concrete, which were mixed with magnetic water. Magnetic water was obtained by the independent designed magnetizing equipment. Ring-test method and flat-test method were used to test early-age shrinkage cracking of concrete. Results show that the strain rate factor (alpha) and the total cracking area of unit area (c) of concrete were decreased when used magnetic water, which means the early-age shrinkage cracking resistance of concrete mixed with magnetic water is improved than those mixed with tap water. The best increase in early-age shrinkage cracking resistance of concrete is achieved when the magnetic strength is 260 mT and the length of magnetic field is 280 mm. Additionally, the compressive and split strength of concrete mixed with magnetic water increased greatly. It is also found that the length of magnetic field have direct effect on the growth of concrete strength. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：91 / 100

页数：10

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