摘要
在混凝土中掺入矿物掺合料不仅可以改善混凝土工作性,而且还可以提高混凝土的力学性能与耐久性能。试验表明:矿物掺合料选择矿粉与粉煤灰复掺方式,其新拌混凝土工作性的效果要好于矿粉或粉煤灰单掺方式,且矿粉与粉煤灰的质量比为2∶1;利用矿物掺合料复掺方式配制的混凝土,其力学性能、抗冻融循环、电通量和氯离子扩散系数都明显好于纯水泥和单掺矿粉或粉煤灰的混凝土。
Mineral admixtures in concrete could not only improve the workability,but also improve the mechanical properties and durability.Research indicated cates that granulated blast-furnace slag powder composite with fly ash as mineral admixtures,the workability of fresh mixed concrete were better than the granulated blast-furnace slag powder or fly ash only mixed,and the quality ratio of granulated blast-furnace slag powder to fly ash was 2 to 1.By using granulated blast-furnace slag powder composited with fly ash as mineral admixtures to prepare concrete,its mechanical properties,freezing-thawing resistance,electric flux and chloride diffusion coefficient were better than pure cement concrete and concrete only mixed with granulated blast-furnace slag powder or fly ash.
出处
《混凝土》
CAS
CSCD
北大核心
2012年第10期60-62,共3页
Concrete
关键词
矿物掺合料
复掺
工作性
耐久性
mineral admixture
composite
workability
durability
