发泡水泥力学性能测试及管道保温试验研究  

Experiment on Mechanical Properties of Foamed Cement and Pipeline Insulation

作　　者：郭巍[1] 姜伟[1] 马令勇[2] 刘功良 李清[2] 杜彬 Guo Wei;Jiang Wei;Ma Lingyong;Liu Gongliang;Li Qing;Du Bin(College of Civil Engineering and Water Conservancy,Heilongjiang Bayi Agricultural University,Daqing 163319;School of Architecture and Civil Engineering,Northeast Petroleum University;Daqing Biqianli Technology Co.,Ltd)

机构地区：[1]黑龙江八一农垦大学土木水利学院,大庆163319 [2]东北石油大学土木建筑工程学院 [3]大庆市碧千里科技开发有限公司

出　　处：《黑龙江八一农垦大学学报》2022年第4期100-107,140,共9页journal of heilongjiang bayi agricultural university

基　　金：国家住房与城乡建设部项目(2020-K-162,2020-K-184);大庆市新能源领域“揭榜挂帅”科技攻关项目(HGS-KJ/KJGLB-[2021]No30);黑龙江省自然科学基金项目(LH2021E022)。

摘　　要：通过调整双氧水比例控制发泡量得到不同密度的发泡水泥,研究不同密度下发泡水泥的导热系数和力学性能变化规律并将其应用于高温管道外侧进行材料耐高温及保温性能试验研究。结果表明,随着密度的增大,导热系数和吸水率数值变化不大,抗压强度和抗折强度增大,抗冻性能增强。导热系数随温度变化规律,85℃以下基本不变,85~150℃增大并有波动,150℃以上增大明显,并且其数值随着时间推移明显减小。研究结论可为发泡水泥在高温管道的保温推广应用提供理论依据。By adjusting the ratio of hydrogen peroxide to control the foaming amount,different densities of foamed cement were obtained.The thermal conductivity and mechanical properties of foamed cement under different densities were studied and applied to the outside of high temperature pipeline for high temperature resistance and thermal insulation performance test.The results showed that with the increase of density,the thermal conductivity and water absorption had little change,the compressive strength and flexural strength gradually increase,and the frost resistance was enhanced.The thermal conductivity was basically unchanged below85 ℃,the thermal conductivity increased and fluctuated between 85 ℃ and 150 ℃,and the thermal conductivity increased significantly above 150 ℃.Its value decreased obviously with time.The conclusion could provide a theoretical basis for the expansion and application of foamed cement in high-temperature pipeline insulation.

关 键 词：发泡水泥 密度 导热系数 力学性能 管道 保温 

分 类 号：TU528[建筑科学—建筑技术科学]