Environmental-friendly non-sintered permeable bricks: Preparation from wrap-shell lightweight aggregates of dredged sediments and its performance

Yang Mao; Ju Chenggong; Xue Kairu; Peng Yuzhou; Han Hong; Wan Qianqian; Peng Xiao; Wu Yan

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Environmental-friendly non-sintered permeable bricks: Preparation from wrap-shell lightweight aggregates of dredged sediments and its performance

机译：环保的非烧结透水砖：从疏浚沉积物的包裹壳轻质聚集体制备及其性能

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In this study, a new technology for preparation of permeable bricks from non-sintered wrap-shell light-weight aggregates (WSLAs) of dredged sediments was developed. The volume method was used to calculate the material mix ratio. The effects of water-cement ratio (W/C), forming pressure (P-f), target porosity (P) and size of aggregate particles on the compressive strength and water permeability coefficient of dredged sediment permeable bricks (DSPB) were discussed. Furthermore, the mechanism of water permeability of DSPB was deeply explored. The mass loss rate and strength loss rate of DSPB after 25 freeze-thaw cycles were compared with that of the crushed stone permeable bricks (CSAPB), the commercial sintered clay permeable bricks (SCLPB), and the commercial sintered ceramic permeable bricks (SCEPB) prepared by the same process. The damage mechanism of DSPB caused by the freeze-thaw cycles was analyzed. Results showed that when W/C was 0.34, P-f was 3 MPa, and P was 15%, the comprehensive performance of fine aggregate permeable brick (DSPB-F) was satisfactory. It was found that the water permeability coefficient of DSPB is almost proportional to the connected porosity. After 25 freeze-thaw cycles, interestingly, Oit was found that the freezing resistance of DSPB is closely related to the number, width and development trend of micro-pores and cracks at the junctions of WSLAs. (C) 2020 Elsevier Ltd. All rights reserved.

机译：在该研究中，开发了一种用于制备来自疏浚沉积物的非烧结包壳轻重聚集体（WSLAS）的渗透砖的新技术。体积法用于计算材料混合比。讨论了水水泥比（W / C），形成压力（P-F），靶孔孔隙率（P）和总颗粒尺寸对疏浚沉积物可渗透砖（DSPB）的抗压强度和水渗透系数的影响。此外，DSPB的水渗透机制深受探索。与碎石透水砖（CSAPB），商业烧结粘土透水砖（SCLPB）和商业烧结陶瓷渗透砖（SCEPB）进行比较25次冻融循环后DSPB的质量损失率和强度损失率。由相同的过程准备。分析了由冻融循环引起的DSPB的损伤机制。结果表明，当W / C为0.34时，P-F为3MPa，P为15％，细骨料可渗透砖（DSPB-F）的综合性能令人满意。发现DSPB的水渗透系数几乎与连接的孔隙率成比例。经过25个冻融循环后，有趣的是，OIT发现DSPB的冷冻抗性与微孔的数量，宽度和发育趋势密切相关，并且在WSLAS的交叉点处的裂缝。（c）2020 elestvier有限公司保留所有权利。

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《Construction and Building Materials》 |2021年第1期|121751.1-121751.9|共9页
作者
Yang Mao; Ju Chenggong; Xue Kairu; Peng Yuzhou; Han Hong; Wan Qianqian; Peng Xiao; Wu Yan;
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Tianjin Univ Sci & Technol Coll Chem Engn & Mat Sci 29 13th Ave Tianjin 300457 Peoples R China;

Tianjin Univ Sci & Technol Coll Chem Engn & Mat Sci 29 13th Ave Tianjin 300457 Peoples R China;

Tianjin Univ Sci & Technol Coll Chem Engn & Mat Sci 29 13th Ave Tianjin 300457 Peoples R China;

Tianjin Univ Sci & Technol Coll Chem Engn & Mat Sci 29 13th Ave Tianjin 300457 Peoples R China;

Tianjin Univ Sci & Technol Coll Chem Engn & Mat Sci 29 13th Ave Tianjin 300457 Peoples R China;

Tianjin Univ Sci & Technol Coll Chem Engn & Mat Sci 29 13th Ave Tianjin 300457 Peoples R China;

Tianjin Univ Sci & Technol Coll Chem Engn & Mat Sci 29 13th Ave Tianjin 300457 Peoples R China;

Tianjin Univ Sci & Technol Coll Chem Engn & Mat Sci 29 13th Ave Tianjin 300457 Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
Dredged sediment permeable bricks (DSPB); Non-sintered method; Effective porosity; Freeze-thaw cycles;

机译：疏浚沉积物渗透砖（DSPB）;非烧结方法;有效孔隙度;冻融循环;

Environmental-friendly non-sintered permeable bricks: Preparation from wrap-shell lightweight aggregates of dredged sediments and its performance

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