Juraidah, Ahmad and Ekarizan, Shaffie and Norfarah Nadia, Ismail and Haryati, Awang and Masyitah, Md Nujid (2023) Investigation on the effect of moisture induced damage on asphaltic concrete mix incorporating waste concrete aggregates. In: IOP Conference Series: Earth and Environmental Science; 1st 2022 International Conference on Sustainable Environment, Development, and Energy, CONSER 2022 , 5-6 December 2022 , Sanur, Denpasar City, Bali. pp. 1-9., 1151 (012044). ISSN 1755-1307
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Abstract
Recycling waste materials, such as partial replacement of WCA for natural aggregates in hot-mix asphalt, could be an option for addressing problems such as environmental pollution and the increasing demand for natural resources. Due to continual development and renovation in the construction industry, the generation of concrete waste has become one of the major challenges. Consequently, the purpose of this study was to develop an asphalt mix design utilizing waste concrete aggregate (WCA) as a partial substitute for natural aggregates (NA). The ratios of WCA10:NA90 and WCA30:NA70 are utilised to design the asphalt mixtures. In this study, asphalt mixtures containing 10 and 30 percent WCA are referred as WCA10 and WCA30, respectively. The density-voids analysis enables the determination of the optimum asphalt content that satisfies the criteria of the Malaysian Public Works Department (PWD). Results indicates that the criteria and design parameters of both mix conforms to the PWD specifications. The optimum asphalt content determined for both WCA10 and WCA30 asphalt mix is 5.7 and 5.8 percent respectively. The moisture sensitivity test is then performed on both WCA10 and WCA30 asphalt mixtures to determine how susceptible these mixtures are to moisture-induced damage. The tensile strength ratio (TSR) for WCA10 and WCA30 asphalt mixtures is 83.6 and 97.4 percent, respectively, which is greater than the minimal requirement of 80%. This investigation revealed that the use of WCA in hot-mix asphalt satisfies the moisture susceptibility requirements.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Concrete aggregates; Construction and demolition waste; Mechanical properties |
| Subjects: | T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) |
| Faculty/Division: | College of Engineering Faculty of Civil Engineering Technology |
| Depositing User: | Mr Muhamad Firdaus Janih@Jaini |
| Date Deposited: | 12 Sep 2023 01:15 |
| Last Modified: | 12 Sep 2023 01:15 |
| URI: | http://umpir.ump.edu.my/id/eprint/38579 |
| Download Statistic: | View Download Statistics |
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