A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Influence of alternative rice husk ash filler on bitumen emulsion-based recycled asphalt
The influence of rice husk ash (RHA) as an alternative active filler on the mechanical properties of bitumen emulsion-based recycled asphalt specimens in high- and low-temperature domains was investigated. The experimental methodology was comprised of static indirect tensile and wheel-tracking testing, as well as scanning electron microscopy using secondary electrons and energy dispersive X-ray spectroscopy. The results showed that the increase in the mass fraction of RHA gradually improved the water sensitivity and the high-temperature performance of specimens, but also negatively affected their low-temperature performance. The mass fraction of RHA above 1.5%, resulted in a tensile strength ratio after freeze–thaw and immersion of more than 80%, and in the dynamic stability in rutting test above 4500 mm−1, but also the low-temperature indirect tensile strength below 2.0 MPa. Considering the relevant regulations, the mass fraction of RHA should be in the range of 1–1.5%.
Influence of alternative rice husk ash filler on bitumen emulsion-based recycled asphalt
The influence of rice husk ash (RHA) as an alternative active filler on the mechanical properties of bitumen emulsion-based recycled asphalt specimens in high- and low-temperature domains was investigated. The experimental methodology was comprised of static indirect tensile and wheel-tracking testing, as well as scanning electron microscopy using secondary electrons and energy dispersive X-ray spectroscopy. The results showed that the increase in the mass fraction of RHA gradually improved the water sensitivity and the high-temperature performance of specimens, but also negatively affected their low-temperature performance. The mass fraction of RHA above 1.5%, resulted in a tensile strength ratio after freeze–thaw and immersion of more than 80%, and in the dynamic stability in rutting test above 4500 mm−1, but also the low-temperature indirect tensile strength below 2.0 MPa. Considering the relevant regulations, the mass fraction of RHA should be in the range of 1–1.5%.
Influence of alternative rice husk ash filler on bitumen emulsion-based recycled asphalt
Yan, Kezhen (author) / Yang, Kun (author) / Long, Zhengwu (author) / Miljković, Miomir (author) / Zhou, Wujun (author) / Liu, Kai (author) / You, Lingyun (author)
Road Materials and Pavement Design ; 24 ; 1507-1521
2023-06-03
15 pages
Article (Journal)
Electronic Resource
Unknown
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