碱种类和掺量对ACM抗压强度的影响

分别用水玻璃(M=2.0)、NaOH和P.O42.5水泥等激发剂激发矿渣粉和粉煤灰等硅铝酸盐材料,制备碱-硅铝酸盐胶凝材料,来研究激发剂种类和掺量对碱-硅铝酸盐材料抗压强度的影响。结果表明在掺量相同的条件下,水玻璃的激活效果最好,水泥的激活效果最差,NaOH介于两者之间。水玻璃最佳用量为硅铝酸盐材料质量的7%;NaOH激发矿渣时的最佳用量为矿渣质量的8%,激发粉煤灰和矿渣的混合物时的最佳用量为硅铝酸盐材料质量的10%;以普通硅酸盐水泥作为碱激发剂,未能反应出明显的规律性。

EFFECT OF VARIETY AND DOSAGE OF ALKALI ON COMPRESSIVE STRENGTH OF ACM

In order to investigate the effect of variety and dosage of alkali on compressive strength of alkali-aluminosilicate cementitious materials(ACM),water glass(M=2.0),NaOH and P·O42.5 cement are used as activator for the aluminosilicate materials such as slag powder and fly ash respectively to produce ACM.The test results show that under the same dosage,the Water glass has the best activation effect,cement is the worst,and NaOH is in the middle.The optimum dosage of water glass is 7% of the aluminosilicate materials in mass.The optimum dosage of NaOH is 8% of the aluminosilicate materials in mass when it is used in stimulating slag powder,and when it is used in stimulating the mixtures of slag powder and fly ash;the optimum dosage is 10%.The P·O42.5 ordinary portland cement used as activator fails to reflect the obvious regularity.