Influence of Mineral Admixtures on the Short and Long-term Performance of Steam-cured Concrete
Influence of Mineral Admixtures on the Short and Long-term Performance of Steam-cured Concrete
复制标题
DOI：
10.1016/j.egypro.2012.01.134
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
He Zhimin;Liu Jun-zhe;Zhu Kangwu
中科院分区：
文献类型：
--
作者：
He Zhimin;Liu Jun-zhe;Zhu Kangwu
从可持续发展的角度考虑，在混凝土行业中用矿物掺合料代替水泥势在必行。本文介绍了掺加矿物掺合料对蒸养混凝土性能的影响。通过短期和长期试验确定了混凝土配合比的性能，包括抗压强度、干燥收缩、抗氯离子渗透性和孔结构。试验结果表明，矿物掺合料改善了混凝土的性能。磨细颗粒状高炉矿渣（GGBS）对混凝土的短期和长期性能都有贡献，而粉煤灰（FA）在相对较长的时间内显示出其有益的效果。矿渣和粉煤灰的掺加均能显著改善蒸养混凝土的微观结构，对改善混凝土的输送性能贡献更大。
In view of sustainable development, it is imperative that mineral admixtures be used to replace cement in the concrete industry. This paper presents a laboratory study on the performance of steam cured concrete by adding mineral admixtures. Performance of the concrete mixes was determined with short and longterm tests, which include compressive strength, dry shrinkage, anti-chloride permeability and pore structure. The test results, in general, showed that mineral admixtures improved the performance of concretes. Ground granular blast furnace slag (GGBS) contributed to both short and long-term properties of concrete, whereas Fly ash (FA) shows its beneficial effect in a relatively longer time. Adding of both GGBS and FA significantly improved the microstructure of steam cured concrete, and contributed more to the improvement of transport properties of concretes.