Production of sustainable plastering mortar containing waste clay brick aggregates
Numerous clay bricks produced by the demolition of old buildings occupy large amounts of valuable land resources and cause serious environmental pollution in the process of transportation, landfill and storage. The objective of this work is to evaluate the feasibility of using waste clay bricks as f...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-06-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509522002522 |
| _version_ | 1811336277511897088 |
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| author | Zhenhai Xu Zhaohui Zhu Yasong Zhao Zhaoheng Guo Gaofeng Chen Cheng Liu Jianming Gao Xuemei Chen |
| author_facet | Zhenhai Xu Zhaohui Zhu Yasong Zhao Zhaoheng Guo Gaofeng Chen Cheng Liu Jianming Gao Xuemei Chen |
| author_sort | Zhenhai Xu |
| collection | DOAJ |
| description | Numerous clay bricks produced by the demolition of old buildings occupy large amounts of valuable land resources and cause serious environmental pollution in the process of transportation, landfill and storage. The objective of this work is to evaluate the feasibility of using waste clay bricks as fine aggregates (CBFA) to prepare sustainable plastering mortar meeting the requirements of GB/T 25181-2019. The effects of CBFA on fresh and hardened properties of plastering mortar have been studied by water requirement, water retention, consistency loss rate, setting time, compressive strength, tensile bonding strength and drying shrinkage. Furthermore, the microstructure of plastering mortar has also been studied to understand the mechanism of CBFA on plastering mortar. The results demonstrate that CBFA can improve water retention of plastering mortar at all dosages (30%, 40%, 50% and 60%), and enhance compressive strength as well as tensile bond strength at 30% dosage. In addition, CBFA can refine the pore diameter and optimize interfacial transition zone (between cement paste and CBFA) of plastering mortar. Nevertheless, CBFA can increase consistency loss rate, drying shrinkage and porosity, and shorten setting time of plastering mortar. In summary, the maximum amount of CBFA in the plastering mortar that can meet the standard requirements is 50% of the total amount of fine aggregates. The utilization of CBFA to prepare plastering mortar not only expands the application range of waste clay bricks and reduces the consumption of natural river sand, but also produces economical green plastering mortar and benefits the sustainable development of building materials. |
| first_indexed | 2024-04-13T17:37:06Z |
| format | Article |
| id | doaj.art-8fe2aca519b943a5a24b565b01243480 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-04-13T17:37:06Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-8fe2aca519b943a5a24b565b012434802022-12-22T02:37:20ZengElsevierCase Studies in Construction Materials2214-50952022-06-0116e01120Production of sustainable plastering mortar containing waste clay brick aggregatesZhenhai Xu0Zhaohui Zhu1Yasong Zhao2Zhaoheng Guo3Gaofeng Chen4Cheng Liu5Jianming Gao6Xuemei Chen7School of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Jiangsu Key Laboratory of Construction Materials, Nanjing 211189, ChinaSchool of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Jiangsu Key Laboratory of Construction Materials, Nanjing 211189, ChinaSchool of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Jiangsu Key Laboratory of Construction Materials, Nanjing 211189, ChinaSchool of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Jiangsu Key Laboratory of Construction Materials, Nanjing 211189, ChinaSchool of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Jiangsu Key Laboratory of Construction Materials, Nanjing 211189, ChinaSchool of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Jiangsu Key Laboratory of Construction Materials, Nanjing 211189, ChinaSchool of Materials Science and Engineering, Southeast University, Nanjing 211189, China; Jiangsu Key Laboratory of Construction Materials, Nanjing 211189, China; Corresponding author at: School of Materials Science and Engineering, Southeast University, Nanjing 211189, China.School of Architecture and Civil Engineering, Chengdu University, Chengdu 6101061, ChinaNumerous clay bricks produced by the demolition of old buildings occupy large amounts of valuable land resources and cause serious environmental pollution in the process of transportation, landfill and storage. The objective of this work is to evaluate the feasibility of using waste clay bricks as fine aggregates (CBFA) to prepare sustainable plastering mortar meeting the requirements of GB/T 25181-2019. The effects of CBFA on fresh and hardened properties of plastering mortar have been studied by water requirement, water retention, consistency loss rate, setting time, compressive strength, tensile bonding strength and drying shrinkage. Furthermore, the microstructure of plastering mortar has also been studied to understand the mechanism of CBFA on plastering mortar. The results demonstrate that CBFA can improve water retention of plastering mortar at all dosages (30%, 40%, 50% and 60%), and enhance compressive strength as well as tensile bond strength at 30% dosage. In addition, CBFA can refine the pore diameter and optimize interfacial transition zone (between cement paste and CBFA) of plastering mortar. Nevertheless, CBFA can increase consistency loss rate, drying shrinkage and porosity, and shorten setting time of plastering mortar. In summary, the maximum amount of CBFA in the plastering mortar that can meet the standard requirements is 50% of the total amount of fine aggregates. The utilization of CBFA to prepare plastering mortar not only expands the application range of waste clay bricks and reduces the consumption of natural river sand, but also produces economical green plastering mortar and benefits the sustainable development of building materials.http://www.sciencedirect.com/science/article/pii/S2214509522002522Waste clay bricksWater retentionTensile bond strengthDrying shrinkageMicrostructure |
| spellingShingle | Zhenhai Xu Zhaohui Zhu Yasong Zhao Zhaoheng Guo Gaofeng Chen Cheng Liu Jianming Gao Xuemei Chen Production of sustainable plastering mortar containing waste clay brick aggregates Case Studies in Construction Materials Waste clay bricks Water retention Tensile bond strength Drying shrinkage Microstructure |
| title | Production of sustainable plastering mortar containing waste clay brick aggregates |
| title_full | Production of sustainable plastering mortar containing waste clay brick aggregates |
| title_fullStr | Production of sustainable plastering mortar containing waste clay brick aggregates |
| title_full_unstemmed | Production of sustainable plastering mortar containing waste clay brick aggregates |
| title_short | Production of sustainable plastering mortar containing waste clay brick aggregates |
| title_sort | production of sustainable plastering mortar containing waste clay brick aggregates |
| topic | Waste clay bricks Water retention Tensile bond strength Drying shrinkage Microstructure |
| url | http://www.sciencedirect.com/science/article/pii/S2214509522002522 |
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