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随着建筑业水利工程的迅速发展,对混凝土各方面的性能不断提出了新的要求。减水剂是混凝土中用量最大的外加剂品种,按其减水效果可分为普通减水剂和高效减水剂。随着工程质量要求的提高,高效减水剂的发展越来越受到重视。水泥减水剂的作用,就是加入水泥减水剂后可明显减少拌和水泥混凝土时所加入的水量,同时大大提高水泥混凝土浆料的流动性能和水泥混凝土的强度,从而提高工程的质量。我国在20世纪80年代开始使用水泥减水剂,但由于普通减水剂的天然缺陷、萘系减水剂的价格居高不下、伪劣产品等因素的
With the rapid development of water conservancy projects in the construction industry, new performance requirements are constantly put forward for all aspects of concrete. Water-reducing agent is the largest amount of concrete admixture varieties, according to its water-reducing effect can be divided into ordinary superplasticizer and superplasticizer. With the improvement of engineering quality requirements, the development of superplasticizer has drawn more and more attention. The role of cement superplasticizer is added cement superplasticizer can significantly reduce the amount of water added when mixing cement concrete, while greatly improving the flow properties of cement concrete slurry and concrete strength, thereby enhancing the quality of the project. China began to use cement superplasticizer in the 1980s, but because of the natural defects of ordinary superplasticizer, the price of naphthalene superplasticizer is still high, the inferior products and other factors