湖南大学学报（自然科学版）2018，Vol.45Issue(6)：72-77,6.DOI:10.16339／j.cnki.hdxbzkb.2018.06.011
矿物掺合料对页岩陶粒混凝土抗压强度的影响*
Influence of Mineral Admixture Addition on Compressive Strength of Shale Ceramsite Concrete
摘要
Abstract
The effects of different contents of mineral admixtures including metakaolin,fly ash and steel slag,on the compressive strength of shale ceramisite concrete were studied systematically and the mi-crostructure and composition were analyzed by SEM and XRD.The results show that the compressive strength of the concrete is the highest when the mass content of the mineral admixtures is about 10％.Then,when two kinds of mineral admixtures are added into the concrete at different ratio,the compressive strength testing shows that the concrete with 10％metakaolin and fly ash(ratio 1:2)exhibits the best compressive strength(18.1、28.6、35MPa at 3d,7d,28d,respectively),which is higher than the concrete without mineral admixture by 417％、267％and 250％at 3d,7d and 28d,respectively.The main reason is that the addition of metakaolin and fly ash can optimize the microstructure of lightweight aggregate con-crete,thus,improving the strength of the concrete.关键词
页岩陶粒混凝土/矿物掺合料/粉煤灰/钢渣/抗压强度/微观结构Key words
shale ceramisite concrete/mineral admixture/fly ash/steel slag/compressive strength/mi-crostructure分类
建筑与水利引用本文复制引用
李玉平,王伟,章鹏,马天齐,高应霞..矿物掺合料对页岩陶粒混凝土抗压强度的影响*[J].湖南大学学报（自然科学版）,2018,45(6):72-77,6.基金项目
湖南省战略新兴产业科技攻关项目(2015GK1031), （2015GK1031）
