Hashemi, Mohammad and Shafigh, Payam and Asadi, Iman and Mahpour, Alireza and Samadian, Arash (2022) The effect of superplasticizer admixture on the engineering characteristics of roller-compacted concrete pavement. International Journal Of Pavement Engineering, 23 (7). pp. 2432-2447. ISSN 1029-8436, DOI https://doi.org/10.1080/10298436.2020.1858483.
Full text not available from this repository.Abstract
This study investigates the effect of using different amounts of superplasticizer (SP) (0.25% and 0.50%) on fresh and hardened properties, durability, ultrasonic pulse velocity (UPV) and thermal conductivity of two RCC pavements with cement contents of 12% (269 kg/m(3)) and 15% (325 kg/m(3)). The test results demonstrate that the use of 0.50% SP in RCC pavement containing 12% and 15% cement decreased Vebe time about 22% and 27%, respectively. Also, an increase in cement content from 12% to 15% decreased the Vebe time about 18%. With the use of 0.50% SP, the 28-day compressive strength for RCC pavements containing 12% and 15% cement increased by 9% and 14%, respectively. In addition, the use of 0.50 SP reduced the porosity of RCC pavement, to about 8% for RCC pavement with 12% cement and 4% for RCC pavement with 15% cement. The results demonstrated that using 0.5% SP increased the thermal conductivity of RCC pavements containing 12% and 15% cement around 19% and 7%, respectively. Generally, the UPV and Field Emission Scanning Electron Microscope (FESEM) test results showed that the use of SP in RCC pavement may lead to a denser structure.
| Item Type: | Article |
|---|---|
| Funders: | None |
| Uncontrolled Keywords: | Roller-compacted concrete pavement; superplasticizers; Vebe time; mechanical properties; durability; thermal conductivity |
| Subjects: | T Technology > TH Building construction |
| Divisions: | Faculty of the Built Environment > Department of Architecture |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 07 Oct 2023 02:05 |
| Last Modified: | 08 Oct 2023 13:04 |
| URI: | http://eprints.um.edu.my/id/eprint/42474 |
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