脱硫石膏对矿渣混凝土抗渗透性能的影响

Influence of Flue Gas Desulphurization Gypsum on Resistance of Permeability of Slag Concrete

摘要:

研究了脱硫石膏对矿渣混凝土气体渗透和氯离子渗透性能的影响,为其在矿渣混凝土中的应用提供更多的理论依据.研究结果表明,脱硫石膏加入矿渣混凝土以后,矿渣混凝土在各龄期的抗压强度均有了一定程度的提高；掺有脱硫石膏的矿渣混凝土的气渗系数变小,抗氯离子渗透性能也得到改善.将脱硫石膏作为一种复合掺合料在矿渣混凝土中应用,有利于改善混凝土的抗渗透性能,增强耐久性,实现了2种工业副产品的资源化复合利用.

Abstract:

An investigation is made into the effect of flue gas desulphurization (FGD) gypsum used in slag concrete on the gas permeability and chloride ion penetration property of the concrete.The results show that the strength of slag concrete can be enhanced if adding FGD gypsum.The coefficient of gas permeability of concrete declines and the chloride ion penetration resistance improves as well.FGD gypsum used as a useful composition of admixture in slag concrete can improve the penetration resistance of the slag concrete and enhance the durability.Therefore,two sorts of byproduct can be recycled.