摘要
对碾压混凝土的抗裂指标进行了分析。通过采用水泥脆性系数试验研究了粉煤灰、硅粉和氧化镁复合掺用对水泥胶砂抗裂性的影响 ,提出了适合配制抗裂碾压混凝土的掺合料及配合量 ,所配制的碾压混凝土具有低弹模、高极限拉伸值以及微膨胀等良好抗裂性的特点 ,为具有抗裂要求的碾压混凝土工程提供了参考。
? The ingredient of resistance to rupture of the rolled compacted concrete(RCC) are analysed in this paper. The influence of fly ash, silic fume and MgO on the resistance to rupture of cement motar have also been researched through the cementing material brittleness coefficient experiment. By adding the suitable amount of admixture, the RCC can have low elastic madule , high limiting extension value and swelling property. 〔
出处
《混凝土》
CAS
CSCD
北大核心
2000年第8期44-46,共3页
Concrete
关键词
碾压混凝土
抗裂性
粉煤灰
氧化镁
Rolled compacted concrete(RCC)
resistance to rupture
fly ash
MgO
