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范文编号:HG054 范文字数:10726,页数:24 摘 要：水泥减水剂的作用，就是加入到混凝土中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。二步法合成减水剂由于生产所耗时间长，含固量不高，溶解度不高等原因，促使人们迫切开发新的高效减水剂。本文简述了实验研制的聚羧酸型减水剂即烯丙基系减水剂的研究,简要介绍了减水剂的研究前景、分类、减水机理,以及烯丙基系减水剂的生产流程，重点讨论了投料方式, 原料厂家,SMAS的添加,含固量,EO数目,AA:APEG配比和pH值等因素对烯丙基减水剂效果的影响,并且从水泥净浆流动性,保持性和混凝土的流动性比较了本实验研制的聚羧酸减水剂和采用二步法合成的聚羧酸减水剂,萘系减水剂以及其他减水剂产品的实验效果，最后得出总结。 Abstract: The function of the cement superplasticizer is to reduce the amount of water used in mixing concrete, to enhance the fluidity of concrete slurry and strength, so as to improve the quality of the projects. The long time of the first generation of cement superplasticizer taken in producing, low solid content require an advanced type of superplasticizer. This paper briefly studied the advanced polycarboxylate superplasticizer - the allyl group superplasticizer whose future development, sorts, the principle of its function on reducing water and its production flow are concerned with. It emphasized the influencing factors of the allyl group uperplasticizers, such as the mode of feeding, the quality of the materials, the SMAS, the solid content, the numbers of EO, the molar ratio of AA to APEG, and the neutralization degree of acrylic acid. From the fluidity and solidification of the net cement slurry and the concrete to show the differences between the products of the two-step synthesis and the laboratory research’s polycarboxylate superplasticizers, the function of the naphthalene superplasticizer and some other superplasticizer products were compared. 目 录 聚羧酸盐混凝土高效减水剂的合成相关范文 |
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