甲酸钙对水泥浆体抗压强度、水化及孔结构的影响

研究了甲酸钙对普通硅酸盐水泥浆体和硅酸盐水泥浆体抗压强度的影响，采用XRD、压汞法和灼烧法，测试了甲酸钙对水泥浆体水化产物组成、孔结构及化学结合水的影响。结果表明：甲酸钙能加速水泥的水化，促进Ca（OH）2的生成，提高水泥浆体的水化程度；甲酸钙能明显改善水泥浆体的孔结构，减少孔隙率和细化孔径；甲酸钙对P·O42．5普通硅酸盐水泥浆体早期强度的提升要比对P·152．5硅酸盐水泥的效果好。

Effect of calcium formate on the and pore structure compressive strength, hydration of cement pastes

The effect of calcium formate on the compressive strength of ordinary Portland cement pastes and Portland cement pastes were studied. The influence of calcium formate on composition of hydra- tion products, pore structure, chemical combined water of cement pastes were investigated by X--ray analysis, mercury intrusion porosimetry （MIP） and combustion method. The results showed that the addition of calcium formate can acceleration the hydration of cement, promote the formation of Ca （OH） 2 and improve the hydration degree of cement pastes. The calcium formate can also significantly improve the pore structure, decrease the porosity and refinement pore size of cement pastes. The effects of calcium formate on improvement of P strength is better than that of P · Ⅱ 52. 5 Portland ·O 42.5 ordinary Portland cement pastes early cement pastes.