欢迎访问《硅酸盐通报》官方网站,今天是
分享到:

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (1): 76-84.

所属专题: 水泥混凝土

• 水泥混凝土 • 上一篇    下一篇

低密度碱矿渣发泡混凝土的制备及基本力学性能

李建林1,2, 张智强1, 余林文1   

  1. 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
  • 收稿日期:2022-08-31 修订日期:2022-10-05 出版日期:2023-01-15 发布日期:2023-02-15
  • 通信作者: 张智强,副教授。E-mail:zzqiang1962@126.com
  • 作者简介:李建林(1996—),男。主要从事碱矿渣发泡混凝土的研究。E-mail:874926679@qq.com
  • 基金资助:
    国家重点研发计划(2018YFD1101003)

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

LI Jianlin1,2, ZHANG Zhiqiang1, YU Linwen1   

  1. 1. College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;
    2. China Merchants Chongqing Communications Technology Research & Design Institute Co., Ltd., Chongqing 400067, China
  • Received:2022-08-31 Revised:2022-10-05 Online:2023-01-15 Published:2023-02-15

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/m3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。

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

Abstract: 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/m3 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.

Key words: alkali activated slag foamed concrete, chemical foaming, low density, gas production rate, pore structure, mechanical property

中图分类号: