低密度碱矿渣发泡混凝土的制备及基本力学性能  

Preparation and Basic Mechanical Properties of Low Density Alkali Activated Slag Foamed Concrete

作　　者：李建林 张智强[1] 余林文[1] LI Jianlin;ZHANG Zhiqiang;YU Linwen(College of Materials Science and Engineering,Chongqing University,Chongqing 400045,China;China Merchants Chongqing Communications Technology Research&Design Institute Co.,Ltd.,Chongqing 400067,China)

机构地区：[1]重庆大学材料科学与工程学院,重庆400045 [2]招商局重庆交通科研设计院有限公司,重庆400067

出　　处：《硅酸盐通报》2023年第1期76-84,122,共10页Bulletin of the Chinese Ceramic Society

基　　金：国家重点研发计划(2018YFD1101003)。

摘　　要：采用化学发泡方法,以双氧水作为发泡剂,水玻璃作为激发剂,研究了激发剂初始温度、催化剂掺量、稳泡剂种类、孔结构对碱矿渣发泡混凝土基本力学性能的影响。结果表明,通过调控激发剂初始温度和催化剂掺量可以使气体的产生速率和浆体的凝结硬化达到一个较好的平衡,配合加入合适的稳泡剂能成功制备出密度约为250 kg/m 3且内部结构良好的碱矿渣发泡混凝土。对比不同稳泡剂制备的同一密度等级下碱矿渣发泡混凝土的抗压强度,发现植物蛋白作稳泡剂制备碱矿渣发泡混凝土的性能最好。The alkali activated slag foamed concrete(AASFC)was prepared by chemical foaming method with hydrogen peroxide as foaming agent and water glass as activator.The effects of initial temperature of activator,dosage of catalyst,type of foam stabilizer and pore structure on the basic mechanical properties of AASFC were studied.The results show that by adjusting the initial temperature of activator and the dosage of catalyst,a good balance can be achieved between the gas generation rate and slurry setting and hardening.The AASFC with density of about 250 kg/m 3 and good internal structure is successfully prepared by adding appropriate foam stabilizer.Comparing the compressive strength of AASFC prepared with different foam stabilizers at the same density grade,it is found that the performance of AASFC with plant protein as foam stabilizer is the best.

关 键 词：碱矿渣发泡混凝土 化学发泡 低密度 产气速率 孔结构 力学性能 

分 类 号：TU528.2[建筑科学—建筑技术科学]