Abstract
Numerical and Experimental Investigation on the Modified of Hot Mix Asphalt Concrete Containing Crumb Rubber and Waste Pet
Highlights
Polymer implication for improving the properties of bitumen in a road pavement has been used more excessively
By increasing the percentage of polyethylene terephthalate in the modifier from 0% to 25%, flow number increases, but increasing this percentage from 25% to 50%, 50% to 75% and 75% to 100%, the flow number reduces, and this decrease in the sample containing just polyethylene modifier is in a way that its flow number becomes even less than the non-modified sample flow number
This study was conducted to investigate the characteristics of the rutting and the resilient modulus of asphalt mixtures containing crumb rubber (CR) and polyethylene terephthalate (PET) modifiers in different percentages
Summary
Polymer implication for improving the properties of bitumen in a road pavement has been used more excessively. Various researchers have investigated the properties of asphalt and additives, for example: the use of plastic bottle trash in SMA mixtures can increase rutting resistance and hardness of the mixture [6]. The addition of plastic bottle waste to hot asphalt mixtures increases the bitumen hardness and increases the viscosity of modified mixtures, which results in reduction of the asphalt samples density [7]. The researchers have reported some advantages of using crumb rubber in asphalt which such as improving the bitumen resistance to permanent deformation due to high viscosity, increasing penetration and improving resilience, increasing bitumen resistance to emerging surface cracks, reducing fatigue cracks and improving pavement durability [9]. The result of this research shows that using additive improves elastic property, and decreases crack on the road surface while load resistance decreases [12]
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