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矿物掺合料对混凝土力学性能与开裂趋势的影响
作者:时宇 朱金华 和德亮 罗小东 吴涛 杜生平 
单位:(成都市高新企业技术中心 成都建工赛利混凝土有限公司 成都 610500) 
关键词:火山灰掺合料 混凝土 力学性能 开裂机理 
分类号:TU525
出版年,卷(期):页码:2019,47(11):0-0
DOI:
摘要:

 通过拌合物和易性、混凝土基体抗压强度和平板开裂测试,研究粉煤灰和矿粉两种火山灰掺合料对混凝土力学与耐久性影响。结果表明:随着矿粉加量的升高,拌合物和易性逐渐变差,但是加入粉煤灰后和易性变化不大。加入火山灰掺合料混凝土7 d强度较纯水泥混凝土低,但28 d强度明显升高,这是由于早期火山灰反应不够,随着养护时间的延长,加入粉煤灰的试样水化度明显升高。体积收缩实验表明,加入矿粉后开裂程度增大,与平板实验矿粉开裂增大结果一致。

基金项目:
成都建工集团课题(CDJG-20190048)。
作者简介:
参考文献:

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