阿利特-硫铝酸钡钙水泥砂浆抗渗性能研究

研究了矿渣、粉煤灰和沸石粉对阿利特-硫铝酸钡钙水泥砂浆抗渗性能和抗Cl-渗透性能的影响.采用XRD,SEM对28 d砂浆的水化产物物相组成和形貌进行了分析、观察;用压汞法对硬化砂浆的孔结构进行了分析.结果表明:在阿利特-硫铝酸钡钙水泥浆体中,掺和料的加入可以提高结构的致密性、抗渗性能和抗Cl-渗透性能,3种掺和料对砂浆抗渗透性能的作用效果为:矿渣>粉煤灰>沸石粉,对抗Cl-渗透性能的作用效果为:矿渣>沸石粉>粉煤灰.

Research of Anti-permeability of Alite-Barium Calcium Sulphoaluminate Cement Mortar

The influences of slag,fly ash and zeolite powders on anti-permeability of water and chloride ions of alite-barium calcium sulphoaluminate cement mortars were investigated in detail.The composition and morphology of the hydrates in the cement mortars cured for 28 days were analysed by XRD and SEM and the pore structure of the mortars was measured by mercury intrusion porosimetry.The results show that the anti-permeability of water or of chloride ions of the cement mortar could be significantly improved by adding the admixtures.The effect of the admixtures to improve anti-permeability of water is different,that is,the slag has the best effect,fly ash has better and zeolite powder has good effect.And the effect to improve anti-permeability of chloride ion is also different,that is,the slag has the best,zeolite powder has better and fly ash has good effect.