石蜡乳液相变泡沫混凝土试验研究

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (5): 1623-1629.

所属专题：水泥混凝土

石蜡乳液相变泡沫混凝土试验研究

陈志纯^1,2,3, 郭丽萍², 李应权^1,3,4, 陈嘉宇¹, 杨冬蕾⁴

1.建筑材料工业技术监督研究中心,北京 100024;
2.东南大学材料科学与工程学院,南京 211189;
3.建材行业水泥基建筑节能材料重点实验室,北京 100024;
4.建筑材料工业技术情报研究所,北京 100024

收稿日期:2022-12-01 修订日期:2023-03-08 出版日期:2023-05-15 发布日期:2023-06-01
通信作者: 郭丽萍,博士,教授。E-mail:guoliping691@163.com
作者简介:陈志纯(1985—),男,博士研究生,高级工程师。主要从事水泥基建筑节能材料研究。E-mail:czc910@163.com
基金资助:
国家科技部科研院所技术开发研究专项资金(2014EG132095)

Experimental Study on Paraffin Emulsion PhaseChange Foamed Concrete

CHEN Zhichun^1,2,3, GUO Liping², LI Yingquan^1,3,4, CHEN Jiayu¹, YANG Donglei⁴

1. Technical Supervision and Research Center of the Building Materials Industry, Beijing 100024, China;
2. School of Materials Science and Engineering, Southeast University, Nanjing 211189, China;
3. Building Materials Industry Key Laboratory of Cement-based Energy-Saving Building Materials, Beijing 100024, China;
4. Institute of Technical Information for Building Materials Industry, Beijing 100024, China

Received:2022-12-01 Revised:2023-03-08 Online:2023-05-15 Published:2023-06-01

摘要/Abstract

摘要： 制备相变石蜡水性分散体乳液并将其引入化学发泡过程中制得相变泡沫混凝土,通过试验研究相变泡沫混凝土的干密度、抗压强度、体积吸水率、保温性能、相变稳定性能及微观状态。结果表明:相变石蜡乳液对化学发泡过程和材料抗压强度均有不利影响,相变石蜡乳液掺量在干粉料质量的40%以内能够稳定制得相变泡沫混凝土;相变石蜡以微小颗粒分散在泡沫混凝土基体中,掺入40%干粉料质量的相变乳液会引起泡沫混凝土抗压强度下降35%~47%、体积吸水率降低19%~30%;相变石蜡能够在一定温度范围内提高泡沫混凝土的保温性能,材料相变稳定性良好,石蜡不易渗漏。

关键词: 泡沫混凝土, 相变材料, 石蜡乳液, 化学发泡, 保温性能

Abstract: Aqueous dispersion emulsion of phase change paraffin was prepared and mixed into chemical foaming process to prepare phase change foamed concrete. The dry density, compressive strength, volumetric water absorption, thermal insulation property, phase change stability and microcosmic state of phase change foamed concrete were tested by experiments. The results show that the phase change paraffin emulsion has adverse effects on the chemical foaming process and compressive strength of material. Phase change foamed concrete can be stably made when the amount of phase change paraffin emulsion is less than 40% of dry powder in quality. Phase change paraffin is dispersed in foamed concrete matrix in the form of tiny particles. The compressive strength of foamed concrete decreases by 35%~47%, and the volumetric water absorption decreases by 19%~30% when the phase emulsion is 40% of dry powder. Phase change paraffin can improve the thermal insulation property of foamed concrete in a certain temperature range. The phase change stability is good, and the paraffin is difficult to leak.

Key words: foam concrete, phase change material, paraffin emulsion, chemical foaming, thermal insulation property

中图分类号:

TU55⁺1.33

陈志纯, 郭丽萍, 李应权, 陈嘉宇, 杨冬蕾. 石蜡乳液相变泡沫混凝土试验研究[J]. 硅酸盐通报, 2023, 42(5): 1623-1629.

CHEN Zhichun, GUO Liping, LI Yingquan, CHEN Jiayu, YANG Donglei. Experimental Study on Paraffin Emulsion PhaseChange Foamed Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(5): 1623-1629.

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石蜡乳液相变泡沫混凝土试验研究

Experimental Study on Paraffin Emulsion PhaseChange Foamed Concrete

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