期刊首页 优先出版 当期阅读 过刊浏览 作者中心 关于期刊 English

2021年 第15卷 第5期

摘要

关键词

相关研究

回顶部

《结构与土木工程前沿（英文）》 >> 2021年 第15卷 第5期 doi: 10.1007/s11709-021-1752-2

Effect of mineral additives and permeability reducing admixtures having different action mechanisms on mechanical and durability performance of cementitious systems

Department of Civil Engineering, Bursa Uludag University, Nilufer-Bursa 16059, Turkey;Department of Civil Engineering, Bursa Uludag University, Nilufer-Bursa 16059, Turkey;Department of Civil Engineering, Bursa Uludag University, Nilufer-Bursa 16059, Turkey

收稿日期： 2021-01-06 录用日期： 2021-11-29 发布日期： 2021-10-15
HTML31 PDF 4 收藏 0

下一篇 上一篇

摘要

In this paper, the effect of usage of the permeability reducing admixture (PRA) having different action mechanisms on hardened state properties of cementitious systems containing mineral additives is examined. For this aim, three commercial PRAs were used during investigation. The effective parameters in the first and third PRAs were air-entraining and high-rate air-entraining, respectively. The second one contained the insoluble calcium carbonate residue and had a small amount of the air-entraining property. Mortar mixes with binary and ternary cementitious systems were prepared by partially replacing cement with fly ash and metakaolin. The hardened state properties of mortar mixtures such as compressive strength, ultrasonic pulse velocity, water absorption, drying shrinkage and freeze–thaw resistance were investigated. The ternary cement-based mixture having both fly ash and metakaolin was selected as the most successful mineral-additive bearing mix in regard to hardened state properties. In this sense, PRA-B, with both insoluble residues and a small amount of air-entraining properties, showed the best performance among the mixtures containing PRA. The combined use of mineral additive and PRA had a more positive effect on the properties of the mixes.

相关研究