水泥石气泡的形成及其对强度的影响

Formation for air bubble in cement paste and its influence on the strength

文章简要介绍了水泥石各种类型气孔的形成原因 ,研究了水灰比、减水剂、消泡剂对孔隙率、表观孔隙率及强度等的影响。结果表明 ,表观孔隙率对水泥石的强度影响较大 ,在水泥浆体里加入消泡剂、减水剂可以显著降低水泥石的孔隙率并使强度有所提高。

This article briefly introduces the forming causes of all types of air bubbles in the cement paste. It also studies the influences of W/C ratio, water reducer, and air－ detraining admixture on the porosity and apparent porosity and of porosity and apparent porosity on the intensity. The result shows that the apparent porosity exerts greater influence on the intensity of cement paste. To add air－ detraining admixture and water reducer in the cement paste can obviously reduce the porosity and increase the intensity.