Properties of concrete containing construction and demolition wastes and fly ash
This paper reports the properties of concrete containing recycled coarse aggregate (RCA) sources from local construction and demolition (C&D) wastes and fly ash (FA) sourced from Western Australia (WA). The RCA is used as 25, 50, 75, and 100% (by weight) replacement of natural coarse aggregate (...
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| Format: | Journal Article |
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American Society of Civil Engineers (ASCE)
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/33603 |
| _version_ | 1848753992816918528 |
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| author | Ahmed, Shaikh |
| author_facet | Ahmed, Shaikh |
| author_sort | Ahmed, Shaikh |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This paper reports the properties of concrete containing recycled coarse aggregate (RCA) sources from local construction and demolition (C&D) wastes and fly ash (FA) sourced from Western Australia (WA). The RCA is used as 25, 50, 75, and 100% (by weight) replacement of natural coarse aggregate (NCA). In addition, the effect of 40% (by weight) class F fly ash as partial replacement of cement on the properties of recycled aggregate concrete is also evaluated. The properties of concrete evaluated are the compressive strength, indirect tensile strength, flexural strength, and water absorption. All properties are measured at 7, 28, 56, and 91 days. The results show that better compressive, tensile, and flexural strength of concrete containing 25% RCA as partial replacement of NCA can be obtained in recycled aggregate concrete. However, in the case of recycled aggregate concretes containing 40% fly ash, the compressive strength at later ages, such as at 56 and 91 days is increased but the indirect tensile and flexural strengths are decreased at all ages. It is observed that the water absorption is decreased as RCA content increased. It is also observed that the water absorption is decreased significantly in recycled aggregate concretes containing 40% fly ash at all ages. |
| first_indexed | 2025-11-14T08:33:20Z |
| format | Journal Article |
| id | curtin-20.500.11937-33603 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:33:20Z |
| publishDate | 2013 |
| publisher | American Society of Civil Engineers (ASCE) |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-336032017-09-13T16:08:23Z Properties of concrete containing construction and demolition wastes and fly ash Ahmed, Shaikh This paper reports the properties of concrete containing recycled coarse aggregate (RCA) sources from local construction and demolition (C&D) wastes and fly ash (FA) sourced from Western Australia (WA). The RCA is used as 25, 50, 75, and 100% (by weight) replacement of natural coarse aggregate (NCA). In addition, the effect of 40% (by weight) class F fly ash as partial replacement of cement on the properties of recycled aggregate concrete is also evaluated. The properties of concrete evaluated are the compressive strength, indirect tensile strength, flexural strength, and water absorption. All properties are measured at 7, 28, 56, and 91 days. The results show that better compressive, tensile, and flexural strength of concrete containing 25% RCA as partial replacement of NCA can be obtained in recycled aggregate concrete. However, in the case of recycled aggregate concretes containing 40% fly ash, the compressive strength at later ages, such as at 56 and 91 days is increased but the indirect tensile and flexural strengths are decreased at all ages. It is observed that the water absorption is decreased as RCA content increased. It is also observed that the water absorption is decreased significantly in recycled aggregate concretes containing 40% fly ash at all ages. 2013 Journal Article http://hdl.handle.net/20.500.11937/33603 10.1061/(ASCE)MT.1943-5533.0000763 American Society of Civil Engineers (ASCE) fulltext |
| spellingShingle | Ahmed, Shaikh Properties of concrete containing construction and demolition wastes and fly ash |
| title | Properties of concrete containing construction and demolition wastes and fly ash |
| title_full | Properties of concrete containing construction and demolition wastes and fly ash |
| title_fullStr | Properties of concrete containing construction and demolition wastes and fly ash |
| title_full_unstemmed | Properties of concrete containing construction and demolition wastes and fly ash |
| title_short | Properties of concrete containing construction and demolition wastes and fly ash |
| title_sort | properties of concrete containing construction and demolition wastes and fly ash |
| url | http://hdl.handle.net/20.500.11937/33603 |