轻质高强蒸压加气混凝土的制备及性能研究

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (7): 2427-2433.

所属专题：水泥混凝土

轻质高强蒸压加气混凝土的制备及性能研究

李相国^1,2, 魏武¹, 何超³, 蔡礼雄¹, 吕阳¹, 但建明²

1.武汉理工大学硅酸盐建筑材料国家重点实验室,武汉 430070;
2.石河子大学化学化工学院,石河子 832000;
3.华新环境工程有限公司,武汉 430075

收稿日期:2023-12-01 修订日期:2024-02-22 出版日期:2024-07-15 发布日期:2024-07-24
通信作者: 吕阳,博士,研究员。E-mail:yang.lv@whut.edu.cn
作者简介:李相囯(1976—),男,博士,研究员。主要从事水泥、工业固废等方向的研究。E-mail:lxggroup@163.com
基金资助:
八师石河子市科技计划项目(2022GY01);兵团重点科技攻关计划(2023AB013-03)

Preparation and Properties of Lightweight High-Strength Autoclaved Aerated Concrete

LI Xiangguo^1,2, WEI Wu¹, HE Chao³, CAI Lixiong¹, LYU Yang¹, DAN Jianming²

1. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China;
2. School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832000, China;
3. Huaxin Environmental Engineering Co, Wuhan 430075, China

Received:2023-12-01 Revised:2024-02-22 Online:2024-07-15 Published:2024-07-24

摘要/Abstract

摘要： 本文利用新疆地区粉煤灰和微硅粉等典型固废资源为原料,开展轻质高强蒸压加气混凝土制备技术研究,分析了原料配比、水料比和发气剂掺量对制品绝干密度和抗压强度的影响。结果表明,当m(粉煤灰)∶m(微硅粉)∶m(石英砂)∶m(生石灰)∶m(水泥)∶m(石膏)=30∶25∶10∶25∶8∶2、铝粉量为总物料质量的0.10%、水料比为0.58、蒸压温度为195 ℃、蒸压压力为 1.2 MPa、蒸压时间为8 h时,轻质高强蒸压加气混凝土的绝干密度为568.70 kg/m³,抗压强度为5.4 MPa,导热系数为0.140 W/(m·K),达到了A5.0、B06等级。

关键词: 蒸压加气混凝土, 粉煤灰, 微硅粉, 绝干密度, 抗压强度, 发气剂

Abstract: In this paper, the preparation technology of lightweight high-strength autoclaved aerated concrete was studied by using typical solid waste resources such as fly ash and micro silica powder in Xinjiang. The effects of raw material ratio, water to material ratio and gas-generating agent content on the absolute dry density and compressive strength of products were analyzed.The results show that when m (fly ash)∶m(micro silica powder)∶m(quartz sand)∶m(quicklime)∶m(cement)∶m(gypsum) is 30∶25∶10∶25∶8∶2, the amount of aluminum powder is 0.10% of total material mass, the water to material ratio is 0.58, the autoclave temperature is 195 ℃, the autoclave pressure is 1.2 MPa, and the autoclave time is 8 h, the absolute dry density of lightweight high-strength autoclaved aerated concrete is 568.70 kg/m³, the compressive strength is 5.4 MPa, and the thermal conductivity is 0.140 W/(m·K), reaching the level of A5.0, B06.

Key words: autoclaved aerated concrete, fly ash, micro silica powder, dry density, compressive strength, gas-generating agent

中图分类号:

TU528.2

李相国, 魏武, 何超, 蔡礼雄, 吕阳, 但建明. 轻质高强蒸压加气混凝土的制备及性能研究[J]. 硅酸盐通报, 2024, 43(7): 2427-2433.

LI Xiangguo, WEI Wu, HE Chao, CAI Lixiong, LYU Yang, DAN Jianming. Preparation and Properties of Lightweight High-Strength Autoclaved Aerated Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(7): 2427-2433.

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轻质高强蒸压加气混凝土的制备及性能研究

Preparation and Properties of Lightweight High-Strength Autoclaved Aerated Concrete

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