Laboratory Evaluation and Design of Construction and Demolition Wastes for Granular Base
Using recycled aggregate from construction and demolition (C&D) wastes as a construction material is a potential method for solving the disposal of C&D wastes, which can reduce the exploitation of natural aggregate. In this study, extensive laboratory tests were carried out to investigate th...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8827715 |
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| _version_ | 1832554999560798208 |
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| author | Jin Yi Chenghao Liang Junfeng Qian Jue Li Yongsheng Yao |
| author_facet | Jin Yi Chenghao Liang Junfeng Qian Jue Li Yongsheng Yao |
| author_sort | Jin Yi |
| collection | DOAJ |
| description | Using recycled aggregate from construction and demolition (C&D) wastes as a construction material is a potential method for solving the disposal of C&D wastes, which can reduce the exploitation of natural aggregate. In this study, extensive laboratory tests were carried out to investigate the reliability of the C&D wastes used as road base material. Meanwhile, the gradation design and the dominant aggregate size range were considered, and a physical disposal method was proposed to enhance the structural performance of the recycled material by replacing the skeleton of the recycled aggregate (RA) with high-quality limestone. The test results showed that (1) given the high absorbency and fragility of C&D wastes, its RA was not enough to provide the strength and stability required by the base; (2) the compaction characteristics of the RA are quite different from that of the limestone aggregate, but the final compaction effect is basically the same; (3) the replacement treatment proposed in this study is an effective approach to improve the performance of the recycled granular base because the breakage rate decreased by at least 28.2% and the mechanical properties increased by approximately 50% compared with that of the untreated specimen; and (4) when the limestone content reached 75%, the California bearing ratio and the resilient modulus of the graded B specimen exceeded 120% and 200 MPa, respectively, satisfying the pavement requirement in medium traffic. |
| format | Article |
| id | doaj-art-6d0d18239e104b77832cd36ee239a925 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-6d0d18239e104b77832cd36ee239a9252025-02-03T05:49:53ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88277158827715Laboratory Evaluation and Design of Construction and Demolition Wastes for Granular BaseJin Yi0Chenghao Liang1Junfeng Qian2Jue Li3Yongsheng Yao4School of Civil Engineering, Central South University of Forestry and Technology, Changsha 410004, ChinaSchool of Civil Engineering, Central South University of Forestry and Technology, Changsha 410004, ChinaSchool of Civil Engineering, Central South University of Forestry and Technology, Changsha 410004, ChinaNational Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science & Technology, Changsha 410114, ChinaSchool of Civil Engineering, Central South University of Forestry and Technology, Changsha 410004, ChinaUsing recycled aggregate from construction and demolition (C&D) wastes as a construction material is a potential method for solving the disposal of C&D wastes, which can reduce the exploitation of natural aggregate. In this study, extensive laboratory tests were carried out to investigate the reliability of the C&D wastes used as road base material. Meanwhile, the gradation design and the dominant aggregate size range were considered, and a physical disposal method was proposed to enhance the structural performance of the recycled material by replacing the skeleton of the recycled aggregate (RA) with high-quality limestone. The test results showed that (1) given the high absorbency and fragility of C&D wastes, its RA was not enough to provide the strength and stability required by the base; (2) the compaction characteristics of the RA are quite different from that of the limestone aggregate, but the final compaction effect is basically the same; (3) the replacement treatment proposed in this study is an effective approach to improve the performance of the recycled granular base because the breakage rate decreased by at least 28.2% and the mechanical properties increased by approximately 50% compared with that of the untreated specimen; and (4) when the limestone content reached 75%, the California bearing ratio and the resilient modulus of the graded B specimen exceeded 120% and 200 MPa, respectively, satisfying the pavement requirement in medium traffic.http://dx.doi.org/10.1155/2020/8827715 |
| spellingShingle | Jin Yi Chenghao Liang Junfeng Qian Jue Li Yongsheng Yao Laboratory Evaluation and Design of Construction and Demolition Wastes for Granular Base Advances in Civil Engineering |
| title | Laboratory Evaluation and Design of Construction and Demolition Wastes for Granular Base |
| title_full | Laboratory Evaluation and Design of Construction and Demolition Wastes for Granular Base |
| title_fullStr | Laboratory Evaluation and Design of Construction and Demolition Wastes for Granular Base |
| title_full_unstemmed | Laboratory Evaluation and Design of Construction and Demolition Wastes for Granular Base |
| title_short | Laboratory Evaluation and Design of Construction and Demolition Wastes for Granular Base |
| title_sort | laboratory evaluation and design of construction and demolition wastes for granular base |
| url | http://dx.doi.org/10.1155/2020/8827715 |
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