水玻璃激发碱-矿渣水泥的水化放热和凝结性能

Hydration Heat Evolution and Setting Performance of Alkali-slag Cement Activated with Water Glass

水玻璃模数和碱当量对碱-矿渣水泥的水化放热和凝结性能有重要影响。该文系统地探讨了水玻璃模数和碱当量对碱-矿渣水泥水化放热和浆体凝结时间及抗压强度的影响规律。结果表明：随模数的增加,水化热降低,凝结时间延长,抗压强度先增加,随后降低;随碱当量的增加,水化热增加,凝结时间稍有延长,强度增加。比较合理的水玻璃模数Ms在1.0~2.0,碱当量为矿渣质量的3%~6%。

The effect of dosage and modulus of water glass on the early hydration and setting performances of alkali-slag cement is very important.The variation of hydration heat and setting time and compressive strength of the alkali-slag cement with its modulus and alkali content are studied.It is found that with the increase of modulus,the hydration heat decreases and the setting time prolongs gradually,and the compressive strength increases first,then decreases.When the dosage of Na2O increases,the hydration heat increases.And the setting time increases slightly and the compressive strength shows the trend of increasing.The reasonable modulus of water glass Ms is about 1.0~2.0,and the dosage is about 3%~6% of the mass of slag.