高适应性无碱液体速凝剂的制备及其应用研究  

Study on preparation and application properties of a high adaptability liquid alkali-free setting accelerator

作　　者：陈延胜 张云 魏凯 汪源 CHEN Yansheng;ZHANG Yun;WEI Kai;WANG Yuan(Wuhan Yuanjin Building Materials Technology Co.Ltd.,Wuhan 430000,China)

机构地区：[1]武汉源锦建材科技有限公司,湖北武汉430000

出　　处：《新型建筑材料》2022年第7期122-127,共6页New Building Materials

摘　　要：采用常温制备工艺,以硫酸铝为主要原材料,辅以有机和无机物添加剂,制备了一种喷射混凝土用高适应性无碱液体速凝剂(FSNAFJ-1),对其性能进行了测试,并研究了速凝剂与不同水泥的相容性。试验结果表明,FSNAFJ-1掺量为6%时,基准水泥净浆的初凝和终凝时间分别为2 min35 s和7 min25 s,1 d抗压强度为9.2 MPa,28 d抗压强度比为105.4%,90 d抗压强度保留率为115.5%;在5%~6%掺量下,FSNAFJ-1与不同水泥具有良好的适应性。A high adaptability liquid alkali-free setting accelerator(FSNAFJ-1)in sprayed concrete was prepared at room temperature by using aluminum as main material,compounding some inorganic and organic compounds.The performance of the liquid alkali-free setting accelerator was tested and the compatibility of accelerator with different cements was also studied.The result of the test show that the FSNAFJ-1 content was 6%,the initial setting time is 2 min35 s,final setting time is 7 min25 s,1 d compressive strength is 9.2 MPa,28 d compressive strength ratio is 105.4%,90 d compressive strength retention rate is up to 115.5%.FSNAFJ-1 has good compatibility with different cements at content of 5%~6%.

关 键 词：常温制备工艺 液体速凝剂 凝结时间 抗压强度 适应性 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]