摘要(英) |
Compared to hot mix, warm mix technology offers the advantages of reducing energy consumption and carbon emissions. The application of warm mix technology has been developed abroad for years. Domestically, the capability to produce warm mix asphalt concrete is also in place, making it certain to become an important trend in pavement engineering. According to related research, although the rutting and moisture damage of warm-mix asphalt concrete (WMA) in the field is similar to the hot-mix asphalt concrete (HMA). The Tensile Strength Ratio of WMA evaluated in the laboratory may not meet specifications, causing it unusable. Therefore, it is necessary to investigate the appropriate configurations for WMA. Furthermore, the impact of foaming water content on foamed warm mix asphalt concrete (FWMA) remains unclear, necessitating further research to determine the appropriate mix design. This study aims to examine the effect of foaming water on FWMA and its differences from HMA, as well as the impact of various fillers on asphalt concrete performance. Initially, FWMA samples with different foaming water contents were subjected to several performance tests, including the Indirect Tensile Test, Tensile Strength Ratio, Hamburg Wheel Tracking Test, Ideal Rutting Test, and Indirect Tensile Cracking Test, and the results were compared with HMA samples. Subsequently, the filler material was switched from limestone to cement for further comparison. The test results indicated that WMA with different foaming water contents met the requirements for coating and compactability, with no statistical significance in performance. However, when comparing the performance of only 1% foaming water, no statistical significance were observed between FWMA and HMA. In the comparison of using different fillers, cement significantly improved the Tensile Strength Ratio of FWMA over limestone, making it a more suitable filler material. |
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