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Journal of Thermal Science

热科学学报

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2025 , Vol. 34 >Issue 4: 1314 - 1327

DOI: https://doi.org/10.1007/s11630-025-2117-2

Experimental Study on a Feasible Bio-Insulation Material for Buildings Taken Reed and Raw Soil as Resources

  • LIU Anye ,
  • LI Hongqiang ,
  • CAI Chenghan ,
  • PENG Yizhe ,
  • LIU Lifang ,
  • BAI Chengying
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  • 1. College of Civil Engineering, Hunan University, Changsha 410082, China
    2. National Center for International Research Collaboration in Building Safety and Environment (NCIRCBSE)，Hunan University, Changsha 410082, China
    3. Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education, Hunan University, Changsha 410082, China
    4. College of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China 
    5. Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China

网络出版日期: 2025-07-04

基金资助

This research is supported by the National Natural Science Foundation of China (No. 52076070, No. 52008166), the Natural Science Foundation of Hunan Province (No. 2021JJ30256, No. 2022JJ30139) and the Department of Ecology and Environment of Hunan Province (No. 2021003630).

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Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2025
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Experimental Study on a Feasible Bio-Insulation Material for Buildings Taken Reed and Raw Soil as Resources

  • LIU Anye ,
  • LI Hongqiang ,
  • CAI Chenghan ,
  • PENG Yizhe ,
  • LIU Lifang ,
  • BAI Chengying
Expand
  • 1. College of Civil Engineering, Hunan University, Changsha 410082, China
    2. National Center for International Research Collaboration in Building Safety and Environment (NCIRCBSE)，Hunan University, Changsha 410082, China
    3. Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education, Hunan University, Changsha 410082, China
    4. College of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China 
    5. Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China

Online published: 2025-07-04

Supported by

This research is supported by the National Natural Science Foundation of China (No. 52076070, No. 52008166), the Natural Science Foundation of Hunan Province (No. 2021JJ30256, No. 2022JJ30139) and the Department of Ecology and Environment of Hunan Province (No. 2021003630).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2025
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摘要

针对我国芦苇产业转型导致芦苇消耗困难、城市基础设施建设扩张导致生土增量巨大的挑战，作者提出了一种将芦苇与生土耦合制备生物质建筑保温材料的新方法，旨在提升乡村建筑的热舒适性并实现建筑节能。研究采用理论与实验相结合方式，探索了生土含量和养护方式对新型生物质保温材料保温性能、力学性能、耐火性能、防水性能、防潮性能和声学性能的影响。研究结果表明，生物质保温材料制备工艺和方法有效利用了芦苇和生土资源，实现了优异的多目标性能。当生土含量在0-40%时，材料的导热系数为0.097至0.104 W/(m·K)，抗压强度为0.70至0.79 MPa，吸水率为29.42%至38.95%，吸湿率为13.33%至31.48%，最大吸声系数为0.80，最大隔音量为56.66 dB。此外，材料防火等级还达到了A级不燃。为拓展新型材料的应用空间和范围，进一步探索了现场施工过程中材料的制备工艺，并围绕养护这一关键环节进行了实验研究，提出采用工业加热毯的低温养护方法。研究结果表明，在环境温度为25°C下固化(0 h、3 h、6 h、9 h、12 h、15 h)后，不同养护温度(30°C、40°C、50°C、60°C)完成养护，材料的导热系数为0.089至0.109 W/(m·K)，抗压强度为0.14至0.70 MPa。该研究为其他类型生物质的高值化应用开辟了途径，并可直接应用于改善住宅建筑的热环境，助力建筑节能、乡村振兴及我国双碳战略的实施。

关键词： reed resource utilization; raw soil application; ecological insulation material; rural building energy efficiency; solid waste transformation

本文引用格式

LIU Anye , LI Hongqiang , CAI Chenghan , PENG Yizhe , LIU Lifang , BAI Chengying . Experimental Study on a Feasible Bio-Insulation Material for Buildings Taken Reed and Raw Soil as Resources[J]. 热科学学报, 2025 , 34(4) : 1314 -1327 . DOI: 10.1007/s11630-025-2117-2

Abstract

In response to the challenges posed by the transformation of China’s reed industry, leading to difficulties in reed utilization, and the significant increment in raw soil from the expansion of urban infrastructure, the authors proposed a novel method of coupling reed with raw soil to produce an ecological building insulation material. The aim is to enhance the thermal comfort of rural buildings and achieve building energy saving. The research has applied theoretical and experimental methods as the core means of exploration for key factors in the preparation of the novel ecological insulation material. These factors include raw soil content and curing methods. Key performance indicators such as thermal insulation, mechanical properties, fire resistance, water resistance, moisture resistance, and acoustic performance have been utilized for evaluation. The research results indicate that the proposed process and method for the preparation of the ecological insulation material effectively utilize reed and raw soil, achieving excellent multi-target performance. When the content of raw soil is in the range of 0–40%, the material’s thermal conductivity ranges from 0.097 W/(m·K) to 0.104 W/(m·K), compressive strength from 0.70 MPa to 0.79 MPa, water absorption rate from 29.42% to 38.95%, moisture absorption rate from 13.33% to 31.48%, and the maximum sound absorption coefficient is 0.80, with a maximum sound insulation of 56.66 dB. Additionally, a non-combustible A-grade fire resistance was achieved. To expand the application space and scope of the novel material, the research team further explored on-site construction material preparation processes and conducted experimental research, focusing on the key aspect of the “curing process”. The low temperature curing method of industrial heating blanket was proposed. The research results indicated that the method is feasible. At an environmental temperature of 25°C, with different curing times and curing temperatures, the material’s thermal conductivity ranges from 0.089 W/(m·K) to 0.109 W/(m·K), and the compressive strength is between 0.14 MPa and 0.70 MPa, meeting the relevant parameter requirements. This research opens up avenues for other types of biomass with high economic added value applications and can be directly applied to improving the thermal environment of residential buildings, contributing to building energy saving, rural revitalization, and the implementation of dual-carbon strategies in China.

Key words： reed resource utilization; raw soil application; ecological insulation material; rural building energy efficiency; solid waste transformation

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