磷石膏基发泡建筑石膏的热传导与强度特性研究

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (12): 4416-4426.

磷石膏基发泡建筑石膏的热传导与强度特性研究

薛凯喜^1,2, 司鹏超^1,2, 王天源^1,2, 蔡梦莹^1,2, 储怡鑫^1,2, 胡艳香^1,2

1.东华理工大学土木建筑工程学院,南昌 330013;
2.江西省地质环境与地下空间工程研究中心,南昌 330013

收稿日期:2023-07-13 修订日期:2023-09-25 出版日期:2023-12-15 发布日期:2023-12-12
通信作者: 司鹏超,硕士研究生。E-mail:786104428@qq.com
作者简介:薛凯喜(1981—),男,博士,教授。主要从事岩土工程相关领域的研究。E-mail:xkx1257@foxmail.com
基金资助:
国家自然科学基金(42167024)

Heat Conduction and Strength Characteristics of Phosphogypsum-Based Foamed Building Gypsum

XUE Kaixi^1,2, SI Pengchao^1,2, WANG Tianyuan^1,2, CAI Mengying^1,2, CHU Yixin^1,2, HU Yanxiang^1,2

1. School of Civil and Architectural Engineering, East China University of Technology, Nanchang 330013, China;
2. Engineering Research Center for Geological Environment and Underground Space of Jiangxi Province, Nanchang 330013, China

Received:2023-07-13 Revised:2023-09-25 Online:2023-12-15 Published:2023-12-12

摘要/Abstract

摘要： 为了进一步提高磷石膏的综合利用率,本文采用单因素试验,研究了α-烯基磺酸钠(AOS)、动物蛋白、十二烷基硫酸钠(K12)质量比为1:1:1的复合发泡剂稀释化对磷石膏基发泡建筑石膏孔隙率及孔隙结构的影响,并研究了孔隙率与强度、导热系数之间存在的关系。研究结果表明,当表观密度在600~800 kg/m³时,磷石膏基发泡建筑石膏的热工性能要优于其他四组泡沫保温材料,当表观密度大于900 kg/m³时,抗压强度要远远高于其他石膏基泡沫材料,导热系数与孔隙率之间的关系符合Maxwell-Euchen1模型,而抗压强度与孔隙率之间的关系更符合Hasselmann方程。本研究可为磷石膏基发泡建筑石膏生产提供数据支撑。

关键词: 磷石膏, 发泡剂, 压汞法, 导热系数, 孔隙结构, 强度

Abstract: In order to further improve the comprehensive utilization rate of phosphogypsum, this article used a single factor experiment to study the effect of the dilution ratio of the composite foaming agent solution with a mass ratio of AOS, animal protein and K12 at 1:1:1 on the porosity and pore structure of phosphogypsum-based foamed building gypsum. And the relationship between porosity and strength, thermal conductivity was studied. The research results show that when the apparent density is between 600 kg/m³ and 800 kg/m³, the thermal performance of phosphogypsum-based foamed building gypsum is better than that of the other four groups of foam insulation materials. When the apparent density is greater than 900 kg/m³, the compressive strength is much higher than that of the other gypsum-based foam materials. The relationship between thermal conductivity and porosity is consistent with the Maxwell-Euchen1 model, while the relationship between compressive strength and porosity is more consistent with the Hasselmann equation. This study provides data support for the production of phosphogypsum-based foamed building gypsum.

Key words: phosphogypsum, foaming agent, mercury porosimetry, thermal conductivity, pore structure, strength

中图分类号:

TU55

薛凯喜, 司鹏超, 王天源, 蔡梦莹, 储怡鑫, 胡艳香. 磷石膏基发泡建筑石膏的热传导与强度特性研究[J]. 硅酸盐通报, 2023, 42(12): 4416-4426.

XUE Kaixi, SI Pengchao, WANG Tianyuan, CAI Mengying, CHU Yixin, HU Yanxiang. Heat Conduction and Strength Characteristics of Phosphogypsum-Based Foamed Building Gypsum[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(12): 4416-4426.

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