摘要
通过对20℃时5%Na2SO4溶液浸泡的各砂浆试件进行外观观察、强度测试以及矿物成分分析,研究了粉煤灰、矿粉、钢渣单掺及其复掺对水泥砂浆抗硫酸盐侵蚀性能的影响。研究结果表明:加入矿物掺合料降低了试件的胶凝材料中的C3A含量,其火山灰反应消耗了大量的水化产物Ca(OH)2,且提高了试件的密实度,对硫酸盐侵蚀具有明显的预防缓解作用;各矿物掺合料的抗硫酸盐侵蚀效果由优到劣依次为:30%粉煤灰,30%粉煤灰+30%矿粉,60%矿粉,30%钢渣+30%矿粉,30%钢渣>30%矿粉,空白样。
The appearance observation, strength test as well as mineral composition analysis towards various mortars dipped in 5%Na2SO4 solution at 20℃ were carried out, and the functions of single or duplicate mixes of fly ash, slag and steel slag towards anti - sulfate corrodes were studied. The results show that the mineral admixtures can reduce C3A quantity in the cement material, and the pozzolanic reaction can consume lots of hydration product - Ca（ OH）2, Which makes specimens close -grained, has obvious prevention function towards the sulfate corrosion. The anti - sulfate corrosion effects of various mineral admixtures from finer to poorer in turn are as follows ： 30% fly ash, 30%fly ash ＋ 30%slag, 60%slag, 30%steel slag＋ 30%slag, 30%steel slag, 30% slag, the blank type.
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2006年第6期46-49,共4页
Journal of Railway Science and Engineering
基金
国家"863"计划项目(2005AA332010)
