偏高岭土制备土聚水泥的试验研究  

EXPERIMENTAL RESEARCH ON PREPARING GEOPOLYMERIC CEMENT WITH KAOLIN

作　　者：李明玲[1] 高华敏[1] 高晓宝[1] 

机构地区：[1]巢湖学院化学与材料科学系,安徽巢湖238000

出　　处：《巢湖学院学报》2011年第6期85-87,100,共4页Journal of Chaohu University

摘　　要：土聚水泥是一种极具发展前景的新型化学激发胶凝材料.本文通过实验研究了土聚水泥制备过程中高岭土的活性、碱激活剂的组成与掺量、自由水的掺量等因素的影响.结果表明:700℃煅烧2h的高岭土,具有较高的火山灰活性,经用NaOH(掺量为20wt%)活化的水玻璃液在灰碱比为5:4,水灰比为0.3,自然养护条件下制备出了力学性能最好的新型胶凝材料.Geopolymeric cement is a new kind of cementitious material activated by some chemical activator.The factors that affect the preparing of the geopolymeric cement were invistigated by laboratory experiments, including calcining temperature of kaolin, the compersition and dosage of alkali activator, and the dosage of water. The results show that the new cementitious material with high strength can be prepared as the kaolinite is calcined at 700℃,and holds about 2h ,and then the amorphous metakaolin is activated by sodium silicate solution （activated by NaOH 20wt%）with a cement/alkali ratio of 5：4, and water/ cement ratio of 0.3 ,respectively, and cured under autogenous conditions.

关 键 词：土聚水泥 高岭土 偏高岭土 碱激发剂 

分 类 号：TQ172.79[化学工程—水泥工业]