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Promotional effect of shaped coal gangue composite phase change agents doping in asphalt on pavement properties.
- Source :
-
Construction & Building Materials . Jan2024, Vol. 411, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- To address issues related to the limited improvement in the performance of phase-change material (PCMs) modified asphalt and the unclear underlying mechanisms, this study developed two structurally stable and thermally efficient coal gangue composite phase-change agents. The impact on enhancing the properties of asphalt was systematically investigated. The study revealed that when the dosage of the phase-change agent is below 20%, there was a pronounced interactive effect between the agent and asphalt. This interaction had the capability to regulate both the non-polar and polar components within the asphalt colloid system. By controlling the dosage of the PCMs agent, it was possible to enhance the high-temperature rheological properties, high-temperature shear resistance and low-temperature flexibility of the asphalt. Additionally, this control improved the adhesion and moisture sensitivity of the PCMs modified asphalt and aggregate system. The maximum temperature-regulating effect of PCMs modified asphalt could reach up to 8.3 °C, with the functional attribute strongly correlated with the low-temperature performance of the asphalt. This research contributes to the promotion and application of PCMs in road engineering. • The service performance of asphalt can be improved by adding CPER or APER. • The adhesion between phase change asphalt and mineral aggregates was enhanced. • CPER or APER can endow asphalt with the temperature regulation ability. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09500618
- Volume :
- 411
- Database :
- Academic Search Index
- Journal :
- Construction & Building Materials
- Publication Type :
- Academic Journal
- Accession number :
- 174786629
- Full Text :
- https://doi.org/10.1016/j.conbuildmat.2023.134447