Collaborative disposal of multisource solid waste: Influence of an admixture on the properties, pore structure and durability of foam concrete

被引:45
作者
Song, Qiang [1 ]
Bao, Jiuwen [1 ]
Xue, Shanbin [1 ]
Zhang, Peng [1 ]
Mu, Shining [2 ]
机构
[1] Qingdao Univ Technol, Ctr Durabil & Sustainabil Studies Shandong Prov, Qingdao 266033, Peoples R China
[2] Yantai Sanli Lightweight Concrete Technol Co Ltd, Yantai 264010, Peoples R China
来源
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2021年 / 14卷
基金
中国国家自然科学基金;
关键词
Multisource solid waste; Foam concrete; Micropore structure; Compressive strength; Thermal conductivity; FLY-ASH; STRENGTH; MICROSTRUCTURE; PERFORMANCE; POROSITY; MORTAR; CHINA;
D O I
10.1016/j.jmrt.2021.07.075
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Solid waste building material treatment is an essential means of disposal and an active research area. Despite this, the multisource characteristics, large volumes and complex compositions of solid waste necessitate new requirements for its treatment. In this paper, a typical resource-based coastal city is considered the research object. Fly ash (FA), furnace slag (FS) and mineral powder (MP) are taken as samples to investigate the influence of admixtures on the properties, pore structure and durability of foam concrete by three-factor and three-level orthogonal tests. Results indicate that foam concrete with different admixtures can have various mechanical and thermal insulation properties. The compressive strength of foam concrete can increase to 3.90 MPa, and its thermal con-ductivity can reach 0.1347 W/M$k. MP has the largest apparent effect on the compressive strength, while FS has the most obvious impact on the thermal conductivity. The durability analysis shows that the number of freeze-thaw cycles foam concrete can withstand is 25-100 cycles. The collaborative disposal of multisource inorganic solid waste has high po-tential for being applied as inner partition walls and thermal insulating components in buildings. This paper provides valuable guidance for the sustainable and clean utilization of multisource inorganic solid waste. (c) 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
引用
收藏
页码:1778 / 1790
页数:13
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