Effect of New Hardening Accelerator on the Strength of Segment Concrete

被引：2

作者：

邓最亮 ^{[1
,2
]}

WANG Weishan ^{[3
,2
]}

路贵民 ^{[1
]}

FU Lefeng ^{[3
,2
]}

ZHENG Baicun ^{[3
,2
]}

机构：

[1] School of Resources and Environmental Engineering, East China University of Science and Technology

[2] Technical Center, Shanghai Sunrise Polymer Material Co., Ltd.

[3] Technical Center, Shanghai Engineering Research Center of Construction Admixtures

来源：

Journal of Wuhan University of Technology(Materials Science) | 2021年 / 36卷 / 03期

关键词：

D O I：

暂无

中图分类号：

TU528 [混凝土及混凝土制品];

学科分类号：

0805 ; 080502 ; 081304 ;

摘要：

A novel crystal nucleus-based cement-hardening accelerator was evaluated using various mortar and segment concrete experiments.The mechanism of hardening acceleration was investigated via hydration temperature variation analysis,hydration degree analysis,X-ray diffraction (XRD) and scanning electron microscopy (SEM).In the presence of accelerator,the fluidity loss of mortar was increased after 30 minuites,and a coagulation was also observed.Moreover,based on the image of SEM,the formation of C-S-H gels was enhanced in the early hydration.As a result,the hardening accelerator could significantly boost the early strength of concrete,especially within one day of pouring,and shorten steam curing time to meet the demolding strength.

引用

页码：387 / 391

页数：5

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