论文部分内容阅读
水泥减水剂是一种能减少水泥拌和用水又能保持水泥流动性能的外掺剂,一般也称作水泥分散剂或扩散剂.它对水泥颗粒有明显的分散作用,可把水泥凝聚体中所包含的水释放出来,使水泥得到充分水化.实践表明,水泥减水剂可使水泥单位用水量减少10～20%,和易性大为增加,泌水性相应减少,节约水泥10%,强度提高5～10%,且抗渗性也相应提高.1977年以来地质系统在四川省地质局所属地质队应用减水剂进行护孔堵漏生产性试用,效果良好.近十年来,减水剂发展迅速,应用日益广泛,主要产品有三种:NNO型,成分是亚甲基二
Cement water-reducing agent is an admixture that can reduce cement mixing water and maintain the flow property of cement. It is also generally called cement dispersant or diffusing agent. It has obvious dispersion effect on cement particles and can be used in cement agglomerates. The contained water is released to make the cement fully hydrated. Practice has shown that the cement water reducing agent can reduce the water consumption of the cement unit by 10 to 20%, greatly increase the workability, reduce the water leakage, and save the cement by 10%. The strength increased by 5-10%, and the impermeability also increased accordingly. Since 1977, the geological system has applied water-reducing agent in the geological team of the Sichuan Geological Bureau to conduct a production trial of plugging and plugging, with good results. In the past decade, water reduction has been achieved. The agent develops rapidly and is applied more and more widely. There are three main products: NNO type, the composition is methylene two.