| 摘要 |
The invention provides a cement hydration rate regulating material which is dextrin containing anions. The cement hydration rate regulating material is simple in preparation process and low in cost; the cement hydration rate regulating performance of the cement hydration rate regulating material is greatly improved as comparison with that of the prior art; and the peak value of the maximum heat release rate for cement hydration can be reduced by more than 80%. Meanwhile, the cement hydration rate regulating material can generate a cement hydration influence different from that of the traditional micromolecular retarder; the regulating material has few and even no influences to the induction period of hydration, but can be used for greatly reducing hydration rates in an acceleration period and a deceleration period; however, the traditional micromolecular retarder is mainly used for prolonging the induction period for cement hydration, but has no influences to the hydration rates in the acceleration period and the deceleration period of the cement hydration. |
