Research Article The Effect of Aggregate Gradations Limit on Dense Graded Cold Mixture Asphalt

Cold mixture asphalt has several benefits like environmental friendly, easy to use, and economical. This mixture is suitable for use in remote areas or in difficult climatic areas. This laboratory study was aimed to investigate the effect of aggregate gradations limit on cold mixture asphalt. There are five aggregate gradation limits used in this study, as lower, lower-middle, middle, middle-upper, and upper limit. The Marshall test was conducted to investigate the performance of dense graded cold mixture asphalt with various aggregate gradations. The results of this study showed that middle-upper gradation on cold mix asphalt generated the best results compared to the middle and lower gradations considering the required porosity of the mixtures. Furthermore, designing gradations of mixtures is an economical effort to obtain the best required cold mixture asphalt.