Laboratory Evaluation of Replacement of Virgin Aggregates with Glass Materials with the Approach of Environmental Pollution

Author

Department of Land Use Planning and Assessment, Science and Research Branch, Islamic Azad University, Tehran, Iran

Abstract

Using glass aggregate in asphalt mixture is an effective way to deal with environmental pollution. In this research, epoxy asphalt was used instead of normal asphalt. Experiments were conducted to investigate the effect of glass aggregate on the performance of asphalt-epoxy mixture compared to asphalt with styrene-butadiene-styrene copolymer softener 1 (SBS). The results showed that for two types of asphalt mixtures, the optimal percentage of additive, void space and density decrease with the increase of glass aggregate content. Marshall stability, Marshall water absorption stability, tensile strength ratio, flexural strength and low temperature properties of asphalt-epoxy mixture are slightly affected by glass aggregate content and are different from SBS-modified asphalt. In addition, the asphalt-epoxy mixture with glass aggregate has good characteristics in terms of wear resistance and light reflection. Therefore, in the asphalt-epoxy mixture, the high content of glass aggregate can achieve superior performance without the need for anti-adhesion agent and with the reduction of environmental pollution.

Keywords

References

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