Utilizing of graphite tailings as fine aggregates in asphalt mixture: Road performance and economic environment assessments
Source abstract
Abstract
Graphite tailings (GT) required immediate application to preempt escalating social and environmental problems. Jixi graphite tailings (JX-GT) and Luobei graphite tailings (LB-GT) are used to replace fine aggregates (FA) in asphalt mixture, respectively. GT replacement rates are 0 %, 25 %, 50 %, 75 % and 100 %. Firstly, the microscopic morphology, phase and chemical composition of JX-GT, LB-GT, and FA were compared and analyzed. Secondly, the asphalt mixture's rutting resistance, water stability, frost resistance, and bending properties were evaluated. Moreover, the environmental benefits and economic merits of the asphalt mixture were evaluated through toxicity measuring and a cost-benefit examination. The findings from the experiment revealed that the physical and chemical properties of JX-GT outperformed those of LB-GT and FA. JX-GT can effectively enhance the mixture's to withstand to high temperatures and water damage in which the optimal replacement rate was 100 % in 90# and 50 % in SBS. The optimal replacement rate for bending performance and frost resistance were 100 % and 50 %, respectively. Following 20 freeze-thaw cycles, it had the highest stability and the lowest loss rate of freeze-thaw cycles. Finally, JX-GT could effectively enhance the road performance of asphalt mixtures, and the optimal replacement rate was 50 %. JX-GT poses a low risk of pollution and can bring good economic benefits. Therefore, JX-GT, an environmentally friendly alternative material in the mixture, provides new opportunities for waste recycling and resource protection.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Asphalt Pavement Performance Evaluation · Concrete and Cement Materials Research · Innovative concrete reinforcement materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (39)
Show source-provided references
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