Petrographic investigation on recycled coarse aggregate and identification the reason behind the inferior performance
Recycled concrete aggregate (RCA) shows more complex behavior in fresh and hardened concrete due to its higher water absorption, weak bonding capacity, poor interfacial transition zones (ITZs) and other uncertainties. The old attached mortar (AM) of RCA is the primary reason behind this. Petrographi...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | English |
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ELSEVIER SCI LTD
2019
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/83267 |
| _version_ | 1848764572458024960 |
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| author | Mistri, Abhijit Bhattacharyya, S.K. Dhami, Navdeep Mukherjee, Abhijit Barai, S.V. |
| author_facet | Mistri, Abhijit Bhattacharyya, S.K. Dhami, Navdeep Mukherjee, Abhijit Barai, S.V. |
| author_sort | Mistri, Abhijit |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Recycled concrete aggregate (RCA) shows more complex behavior in fresh and hardened concrete due to its higher water absorption, weak bonding capacity, poor interfacial transition zones (ITZs) and other uncertainties. The old attached mortar (AM) of RCA is the primary reason behind this. Petrographic analysis is normally assessed for construction aggregate to evaluate the physical and mineralogical characteristics, along with these the prediction of aggregate behavior in concrete. The same methodology is applied here for RCA and demanding to investigate the reason behind the inferior performance of it into fresh concrete. Optical microscopy, thin section, and Scanning Electron Microscopy (SEM) analysis are carried out in order to solve the addressed issue. Both the qualitative and quantitative petrographic analysis is conducted in order to identify the inferior properties of RCA. Micropores and microcracks are very common for RCA surface which propagates the failure of recycled aggregate concrete (RAC) under load. The experimental observation is suggested that the RCA is different kind of aggregate for sustainable construction material and cannot comparable with natural aggregate (NA) without proper understanding the type of parent aggregate or source of RCA. The range of aggregates between 20 and 10 mm can give good quality RCA after additional crushing and suitable treatment is required on RCA for strengthening the old ITZ and AM in order to achieve high-quality RCA. |
| first_indexed | 2025-11-14T11:21:29Z |
| format | Journal Article |
| id | curtin-20.500.11937-83267 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:21:29Z |
| publishDate | 2019 |
| publisher | ELSEVIER SCI LTD |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-832672021-07-15T05:51:31Z Petrographic investigation on recycled coarse aggregate and identification the reason behind the inferior performance Mistri, Abhijit Bhattacharyya, S.K. Dhami, Navdeep Mukherjee, Abhijit Barai, S.V. Science & Technology Technology Construction & Building Technology Engineering, Civil Materials Science, Multidisciplinary Engineering Materials Science Thin section analysis SEM Recycled aggregate Petrography analysis Construction and demolition waste Optical microscopic analysis MECHANICAL PERFORMANCE PARENT CONCRETE STRENGTH CONSTRUCTION WASTE BEHAVIOR SILICA Recycled concrete aggregate (RCA) shows more complex behavior in fresh and hardened concrete due to its higher water absorption, weak bonding capacity, poor interfacial transition zones (ITZs) and other uncertainties. The old attached mortar (AM) of RCA is the primary reason behind this. Petrographic analysis is normally assessed for construction aggregate to evaluate the physical and mineralogical characteristics, along with these the prediction of aggregate behavior in concrete. The same methodology is applied here for RCA and demanding to investigate the reason behind the inferior performance of it into fresh concrete. Optical microscopy, thin section, and Scanning Electron Microscopy (SEM) analysis are carried out in order to solve the addressed issue. Both the qualitative and quantitative petrographic analysis is conducted in order to identify the inferior properties of RCA. Micropores and microcracks are very common for RCA surface which propagates the failure of recycled aggregate concrete (RAC) under load. The experimental observation is suggested that the RCA is different kind of aggregate for sustainable construction material and cannot comparable with natural aggregate (NA) without proper understanding the type of parent aggregate or source of RCA. The range of aggregates between 20 and 10 mm can give good quality RCA after additional crushing and suitable treatment is required on RCA for strengthening the old ITZ and AM in order to achieve high-quality RCA. 2019 Journal Article http://hdl.handle.net/20.500.11937/83267 10.1016/j.conbuildmat.2019.06.085 English ELSEVIER SCI LTD restricted |
| spellingShingle | Science & Technology Technology Construction & Building Technology Engineering, Civil Materials Science, Multidisciplinary Engineering Materials Science Thin section analysis SEM Recycled aggregate Petrography analysis Construction and demolition waste Optical microscopic analysis MECHANICAL PERFORMANCE PARENT CONCRETE STRENGTH CONSTRUCTION WASTE BEHAVIOR SILICA Mistri, Abhijit Bhattacharyya, S.K. Dhami, Navdeep Mukherjee, Abhijit Barai, S.V. Petrographic investigation on recycled coarse aggregate and identification the reason behind the inferior performance |
| title | Petrographic investigation on recycled coarse aggregate and identification the reason behind the inferior performance |
| title_full | Petrographic investigation on recycled coarse aggregate and identification the reason behind the inferior performance |
| title_fullStr | Petrographic investigation on recycled coarse aggregate and identification the reason behind the inferior performance |
| title_full_unstemmed | Petrographic investigation on recycled coarse aggregate and identification the reason behind the inferior performance |
| title_short | Petrographic investigation on recycled coarse aggregate and identification the reason behind the inferior performance |
| title_sort | petrographic investigation on recycled coarse aggregate and identification the reason behind the inferior performance |
| topic | Science & Technology Technology Construction & Building Technology Engineering, Civil Materials Science, Multidisciplinary Engineering Materials Science Thin section analysis SEM Recycled aggregate Petrography analysis Construction and demolition waste Optical microscopic analysis MECHANICAL PERFORMANCE PARENT CONCRETE STRENGTH CONSTRUCTION WASTE BEHAVIOR SILICA |
| url | http://hdl.handle.net/20.500.11937/83267 |