聚合硫酸铝对无碱速凝剂性能的影响  

The Effect of Polyaluminum Sulfate on the Performance of Alkali-free Accelerator

作　　者：颜义 龙潇 曾徇 王远福 孙友 Yan Yi;Long Xiao;Zeng Xun;Wang Yuanfu;Sun You(Guizhou Dr.Stone Technology Co.,Ltd.,Guiyang 550014,China;Guiyang Lvzhouyuan New Materials Co.,Ltd.,Guiyang 550081,China)

机构地区：[1]贵州石博士科技股份有限公司,贵州贵阳550014 [2]贵阳绿洲苑新材料有限公司,贵州贵阳550081

出　　处：《广东化工》2025年第5期23-25,81,共4页Guangdong Chemical Industry

基　　金：贵州省科技计划项目(黔科合成果[2023]一般815)。

摘　　要：本研究研发了一种具有储存稳定性强、水泥适应性广以及强度优异等特点的液体无碱速凝剂。为了解决传统无碱速凝剂中硫酸铝溶解度有限的问题,本研究引入了自制的聚合硫酸铝,通过单因素实验,调整聚合硫酸铝的合成温度、合成时间以及碱化剂的用量探索出最佳的聚合硫酸铝制备工艺参数。然后在传统硫酸铝体系中,加入自制聚合硫酸铝,提升速凝剂中铝相的浓度,最终得到综合性能优异的速凝剂。经测试最终优化后得到的速凝剂在不同水泥中凝结时间与强度的适应性良好,稳定性与后期强度也能满足标准要求。In this study,a liquid alkali-free accelerator with long stability,wide adaptability to cement,and excellent strength was developed.Self-made polyaluminum sulfate was introduced to solve the problem of the limited solubility of of aluminum sulfate in traditional alkali-free accelerators.Through single factor experiment,temperature,time,and amount of alkalizing agent of polyaluminum sulfate synthesis were adjusted to optimal parameters.Then,in the traditional aluminum sulfate system,polyaluminum sulfate is introduced to increase the concentration of aluminum phase in the system to acquire an accelerator with excellent comprehensive performance.Through experiment,the optimized accelerator has superb adaptability to the setting time and strength in different cement,and its stability and later strength can also meet the requirements of Chinese national standards.

关 键 词：液体速凝剂 稳定性 聚合硫酸铝 抗压强度 

分 类 号：TQ[化学工程]