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Laboratory Evaluation of Fiber-Modified Asphalt Mixtures Incorporating Steel Slag Aggregates

Computers, Materials & Continua 2022年第3期70卷 5967-5990页

作者： Adham Mohammed Alnadish Mohamad Yusri Aman herda yati binti katman Mohd Rasdan Ibrahim Department of Civil Engineering and Built Environment Universiti Tun Hussein Onn MalaysiaParit Raja86400Malaysia Department of Civil Engineering Universiti Tenaga NasionalKajang43000Malaysia Department of Civil Engineering Universiti MalayaKuala Lumpur50603Malaysia

Vigorous and continued efforts by researchers and engineers have contributed towards maintaining environmental sustainability through the utilization of waste materials in civil engineering applications as an alternative to natural *** this study,granite aggregates in asphaltic mixes were replaced by electric arc furnace(EAF)steel slag aggregates with different proportions to identify the best combination in terms of superior *** mixtures showing the best performance were further reinforced with polyvinyl alcohol(PVA),acrylic,and polyester fibers at the dosages of 0.05%,0.15%,and 0.3%by weight of the *** performance tests of this study were resilient modulus,moisture susceptibility,and indirect tensile fatigue cracking *** findings of this study revealed that the asphalt mixtures containing coarse steel slag aggregate exhibited the best performance in comparison with the other ***,the reinforced asphalt mixtures with synthetic fibers at the content of 0.05%exhibited an almost comparable performance to the unreinforced asphalt *** the asphalt mixtures with PVA,acrylic,and polyester fibers at the proportion of 0.15%have improved the fatigue cracking resistance by 41.13%,29.87%,and 18.97%,***,the fiber-modified asphalt mixtures with PVA,acrylic,and polyester have enhanced the fatigue cracking resistance by about 57%,44%,and 39%,*** results of the resilient modulus demonstrated that as the fiber content increase,the resilient modulus of the reinforced asphalt mixtures ***,introducing synthetic fibers at the content of 0.3%has slightly decreased the resilient modulus in comparison with unreinforced *** the other hand,the results of the mechanisticempirical pavement design showed that the reinforced asphalt mixes with a high content of synthetic fibers have shown lower service life than the control mixes due to the low resilient *** the contra

关键词： Steel slag aggregate polyvinyl alcohol fiber acrylic fiber polyester fiber cracking resistance resilient modulus

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