Abstract
Porous asphalt pavements are environmentally friendly permeable road pavements. There is a need to improve the strength performance of porous asphalt mixtures. Waste Ethylene Propylene Diene Monomer (EPDM) rubber modification of porous asphalt mixtures is investigated in this study. The mixture was initially designed for the selected mix aggregate gradation. Waste EPDM rubber scraps were replaced with filler materials at the rate of 2 % and 4 % of the total aggregate weight. Performance tests were conducted on test specimens. The EPDM rubber scraps improved the elasticity and strength properties of PA mixtures.
Highlights
Introduction asphalts containingEthylene Propylene Diene Monomer (EPDM) modified bitumen have the potential to improve mechanical strength and moisture sensitivityThe dissemination of productions and practices aimed at behaviour [10]
The effects of replacement of waste EPDM rubber particles on porous asphalt mixture performance were investigated in this study
The following conclusions can be made from the performance test results, such as the void ratio, Cantabro particle loss, permeability, indirect tensile strength, and moisture susceptibility: -- the air void ratio and permeability of the sample decreased as the EPDM in the mixture increased, the desired limit value was achieved for both replacement ratios
Summary
Basalt aggregate obtained from the quarry situated in EskişehirKızılinler-Eşenkara region was used in this study as coarse aggregate, fine aggregate and filler material. Due to their natural properties as an elastomeric material, provide excellent resistance to outdoor conditions such as heat and oxidation, and to low temperatures environments. Because EPDM is saturated, its resistance to heat, oxygen, ozone and weather conditions is very good [14, 15] It is a very functional special rubber and is used in automotive parts, rubber hoses and cable production. Of thermal expansion [μm/mK] Elongation at break [%] This material was replaced with filler material at the rates of 2 % and 4 % of the total aggregate weight. It was mixed dry with aggregate for 2 minutes to reach homogeneous distribution in the mixture. In order to ensure homogeneous distribution of granular material in the mixture, this material (pellets 7 mm in diameter and 20 mm in length) was mixed dry with the aggregate for 2 minutes before adding the bitumen
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