论文部分内容阅读
1.离析抑制剂这里所说的离析抑制剂,是指用于减少砼组成材料间种种离析现象的一种外加剂,其主要成分大致与砼常用的增稠剂及水中不分离性混合剂等相当。离析抑制剂的主要成分为非离子系水溶性纤维素醚,具有OH基,其中又可分为以亲水性大的HEO(羟乙基纤维素)、HEMC(羟甲基纤维素)、HPMC(羟丙甲基纤维素)为代表的纤维素系以及以聚丙烯酰胺聚合物为代表的丙烯系。按照需要,离析抑制剂可与调整空气量和凝结时间的消泡剂、促凝剂以及提高流动性的高效减水剂、流态化剂等一起使用,以确保强度和耐久性。
1. Segregation inhibitor The segregation inhibitor referred to here is an additive used to reduce segregation between various materials of cerium. The main ingredients of the segregation inhibitor are roughly the same as those commonly used for cerium, such as thickeners and non-segregating admixtures in water. quite. The main component of the segregation inhibitor is a nonionic water-soluble cellulose ether having an OH group, which can be further divided into highly hydrophilic HEO (hydroxyethyl cellulose), HEMC (hydroxymethyl cellulose), HPMC (Hydroxypropylmethyl cellulose) represents a cellulose system and a propylene system represented by a polyacrylamide polymer. As necessary, the segregation inhibitor may be used together with a defoaming agent that adjusts the air amount and setting time, a coagulant and a high-efficiency water-reducing agent that enhances fluidity, a fluidizing agent, and the like to ensure strength and durability.