通过分析甘油对水泥-石灰石粉胶凝材料在低温(5℃)、5％硫酸钠溶液中侵蚀的影响，研究了环境极性对水泥基材料抗低温硫酸盐侵蚀性能的影响。结果表明，水泥-石灰石粉试件腐蚀程度随时间增加而加重，腐蚀产物主要为碳硫硅钙石，未掺甘油的试件棱角发生明显脱落；掺甘油降低了腐蚀产物中碳硫硅钙石的生成量，随甘油掺量增加腐蚀产物中碳硫硅钙石的生成量减少，腐蚀程度减轻。甘油可以抑制水泥基材料中碳硫硅钙石的生成，降低环境极性能提高水泥基材料抗低温硫酸盐侵蚀性能。
By means of analyzing the effect of glycerol sulfate attack resistance of cement-ground limestone ce-mentitious materials at low temperature(5 ℃,5% Na2 SO 4 ),the effect of solvent polarity on thaumasite forma-tion was studied.The results showed that the degree of corrosion of cement-limestone powder specimens aggra-vated with prolonged,and the corrosion products were mainly thaumasite.The specimens without glycerol fell out at edges and corners obviously,while the glycerol reduced the generation of thaumasite in the corrosion products,and the generation of thaumasite decreased with the increase of glycerol content.Glycerol can reduce the generation of thaumasite in cement-ground limestone cementitious material,and lowering environment po-larity of cementitious materials could improve the resistance of cementitious material to thaumasite form of sul-fate attack at low temperature.
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