Recycled Concrete Aggregates in Roadways: A Laboratory Examination of Self-Cementing Characteristics
This paper examines the self-cementing phenomenon of the road construction material known as recycled concrete aggregate (RCA). Two RCA types were selected as study materials: (1) high-grade RCA (HRCA), a quality RCA manufactured from relatively high-strength concrete structures; and (2) road base R...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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American Society of Civil Engineers (ASCE)
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/6800 |
| _version_ | 1848745181243768832 |
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| author | Jitsangiam, Peerapong Boonserm, K. Phenrat, T. Chummuneerat, Suphat Chindaprasirt, P. Nikraz, Hamid |
| author_facet | Jitsangiam, Peerapong Boonserm, K. Phenrat, T. Chummuneerat, Suphat Chindaprasirt, P. Nikraz, Hamid |
| author_sort | Jitsangiam, Peerapong |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This paper examines the self-cementing phenomenon of the road construction material known as recycled concrete aggregate (RCA). Two RCA types were selected as study materials: (1) high-grade RCA (HRCA), a quality RCA manufactured from relatively high-strength concrete structures; and (2) road base RCA (RBRCA), a high-grade RCA blend combined with brick and general clean rubble (road base material). Laboratory tests were performed to obtain the unconfined compressive strength, indirect tension dynamic modulus, and resilient modulus of the test samples to examine their hardening characteristics when subjected to varying curing periods. These tests were performed in conjunction with microstructure analyses from X-ray diffractometry (XRD) and scanning electron microscope (SEM) techniques. The HRCA samples, which were prepared and subjected to varying curing conditions, transformed from an initially unbound material into a bound (fully stabilized) material. The results of XRD and SEM analyses clearly demonstrate that secondary hydration occurred. The RBRCA samples were able to maintain their unbound granular properties, with nonsignificant self-cementing, thus supporting the hypothesis that the mixing of nonactive materials such as bricks and clean rubble into RCA will lessen the tendency of RCA toward self-cementing. |
| first_indexed | 2025-11-14T06:13:16Z |
| format | Journal Article |
| id | curtin-20.500.11937-6800 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:13:16Z |
| publishDate | 2015 |
| publisher | American Society of Civil Engineers (ASCE) |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-68002017-09-13T14:35:42Z Recycled Concrete Aggregates in Roadways: A Laboratory Examination of Self-Cementing Characteristics Jitsangiam, Peerapong Boonserm, K. Phenrat, T. Chummuneerat, Suphat Chindaprasirt, P. Nikraz, Hamid Construction and Demolition (C&D) materials Self-cementing Base/Subbase course Recycled concrete aggregate This paper examines the self-cementing phenomenon of the road construction material known as recycled concrete aggregate (RCA). Two RCA types were selected as study materials: (1) high-grade RCA (HRCA), a quality RCA manufactured from relatively high-strength concrete structures; and (2) road base RCA (RBRCA), a high-grade RCA blend combined with brick and general clean rubble (road base material). Laboratory tests were performed to obtain the unconfined compressive strength, indirect tension dynamic modulus, and resilient modulus of the test samples to examine their hardening characteristics when subjected to varying curing periods. These tests were performed in conjunction with microstructure analyses from X-ray diffractometry (XRD) and scanning electron microscope (SEM) techniques. The HRCA samples, which were prepared and subjected to varying curing conditions, transformed from an initially unbound material into a bound (fully stabilized) material. The results of XRD and SEM analyses clearly demonstrate that secondary hydration occurred. The RBRCA samples were able to maintain their unbound granular properties, with nonsignificant self-cementing, thus supporting the hypothesis that the mixing of nonactive materials such as bricks and clean rubble into RCA will lessen the tendency of RCA toward self-cementing. 2015 Journal Article http://hdl.handle.net/20.500.11937/6800 10.1061/(ASCE)MT.1943-5533.0001245 American Society of Civil Engineers (ASCE) fulltext |
| spellingShingle | Construction and Demolition (C&D) materials Self-cementing Base/Subbase course Recycled concrete aggregate Jitsangiam, Peerapong Boonserm, K. Phenrat, T. Chummuneerat, Suphat Chindaprasirt, P. Nikraz, Hamid Recycled Concrete Aggregates in Roadways: A Laboratory Examination of Self-Cementing Characteristics |
| title | Recycled Concrete Aggregates in Roadways: A Laboratory Examination of Self-Cementing Characteristics |
| title_full | Recycled Concrete Aggregates in Roadways: A Laboratory Examination of Self-Cementing Characteristics |
| title_fullStr | Recycled Concrete Aggregates in Roadways: A Laboratory Examination of Self-Cementing Characteristics |
| title_full_unstemmed | Recycled Concrete Aggregates in Roadways: A Laboratory Examination of Self-Cementing Characteristics |
| title_short | Recycled Concrete Aggregates in Roadways: A Laboratory Examination of Self-Cementing Characteristics |
| title_sort | recycled concrete aggregates in roadways: a laboratory examination of self-cementing characteristics |
| topic | Construction and Demolition (C&D) materials Self-cementing Base/Subbase course Recycled concrete aggregate |
| url | http://hdl.handle.net/20.500.11937/6800 |