- 趙 平1, 嚴 云1,2,胡志華1,2
2012年第7期
摘要
引用本文
摘 要:試驗研究了一種改性淀粉作為水泥緩凝減水劑的性能。結果表明,改性淀粉減水劑最佳摻量為0.3%,具有較強的緩凝作用,水泥初期水化反應緩慢,水化誘導期明顯延長,有利于水化產物的均勻分布,對膠砂和混凝土的抗壓強度有明顯的增強作用。
Abstract: The performance of the modified starch as water-reducing retarder for cement is studied by the experiment. The results show that the optimum mix dosage of modified starch is 0.3%. Because of its retarding action, the initial hydration of cement is slower and the derivational period of cement hydration is extended, which is in favor of the uniform distribution of hydration products and can significantly improve the compressive strength of cement mortar and concrete.