Durability of thermal insulating bio-based lightweight concrete: Understanding of heat treatment on bio-aggregates
文献类型：期刊论文
| 作者 | Wu, Fan2,3; Yu, Qingliang1,3; Liu, Changwu4 |
| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
 |
| 出版日期 | 2021 |
| 卷号 | 269页码:121800 |
| 关键词 | Bio-based lightweight concrete Bio-aggregates Heat treatment Cement hydration Thermal conductivity Drying shrinkage Freeze-thaw resistance |
| ISSN号 | 0950-0618 |
| DOI | 10.1016/j.conbuildmat.2020.121800 |
| 产权排序 | 2 |
| 通讯作者 | Yu, Qingliang(q.yu@bwk.tue.nl) ; Liu, Changwu(liuchangwu@scu.edu.cn) |
| 文献子类 | Article |
| 英文摘要 | The organic matter, surface properties and biodegradation of bio-based aggregates are the main factors for their poor performance of bio-based lightweight concrete. In the present study, heat-treatment is applied to bio-aggregates for reducing their negative impacts on cement hydration and performance of thermal insulating bio-based lightweight concrete. The results show that heat-treated bio-aggregates have reduced negative impacts on cement hydration by the decomposition of organic matter and increase of the pH of the leachate, and significantly improves the mechanical strength of concrete. The 28-day compressive strength and flexural strength of heat-treated apricot shell (HAS) concrete increase by 50.2% and 87.7%, respectively, compared to the untreated apricot shell (AS) concrete. The bio-based lightweight concrete in this study has an excellent thermal insulation property, and the thermal conductivity varies from 0.56 Wfinl< and 1.25 W/m.K. Moreover, the heat-treated bio-based aggregate significantly reduces the drying shrinkage of concrete. At 108 days, the drying shrinkage of concrete containing heat-treated aggregates reduces by 29.2%-36.1%. Besides, the heat-treated bio-based aggregate enhances the resistance to freeze-thaw cycles, attributed to the reduced micro-cracks and porosity of concrete. Therefore, heat treatment can improve the properties of bio-based aggregates and significantly increase the durability of thermal insulating bio-based lightweight concrete. (C) 2020 The Authors. Published by Elsevier Ltd. |
| 电子版国际标准刊号 | 1879-0526 |
| WOS关键词 | OIL PALM SHELL ; DRYING SHRINKAGE BEHAVIOR ; MECHANICAL-PROPERTIES ; APRICOT SHELL ; ACTIVATED CARBON ; HIGH-TEMPERATURE ; COCONUT SHELL ; PEACH SHELL ; PERFORMANCE ; HYDRATION |
| 资助项目 | China Scholarship Council (CSC)[201806240037] ; Sichuan University ; Eindhoven University of Technology |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000604773000126 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | China Scholarship Council (CSC) ; Sichuan University ; Eindhoven University of Technology |
| 源URL | [http://ir.imde.ac.cn/handle/131551/55207]  |
| 专题 | 中国科学院水利部成都山地灾害与环境研究所 |
| 通讯作者 | Yu, Qingliang; Liu, Changwu |
| 作者单位 | 1.School of Civil Engineering, Wuhan University, No.299 Bayi Road, Wuchang District, Wuhan 430072, PR China; 2.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, No.9 Section 4, Renmin South Road, Chengdu 610041, PR China; 3.Department of the Built Environment, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, the Netherlands; 4.College of Water Resource and Hydropower, Sichuan University, No.24 South Section 1, Yihuan Road, Chengdu 610065, PR China |
| 推荐引用方式 GB/T 7714 | Wu, Fan,Yu, Qingliang,Liu, Changwu. Durability of thermal insulating bio-based lightweight concrete: Understanding of heat treatment on bio-aggregates[J]. CONSTRUCTION AND BUILDING MATERIALS,2021,269:121800. |
| APA | Wu, Fan,Yu, Qingliang,&Liu, Changwu.(2021).Durability of thermal insulating bio-based lightweight concrete: Understanding of heat treatment on bio-aggregates.CONSTRUCTION AND BUILDING MATERIALS,269,121800. |
| MLA | Wu, Fan,et al."Durability of thermal insulating bio-based lightweight concrete: Understanding of heat treatment on bio-aggregates".CONSTRUCTION AND BUILDING MATERIALS 269(2021):121800. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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