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چکیده
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Flash floods belong to the worst natural disasters and cause serious economic damage every year. Hence, use of pervious pavements in order to reduce surface runoff and allow the water to penetrate the soil is an important factor in flooding reduction. The main objective of the paper is to study the influence of various parameters, such as water-cement ratio (0.32, 0.35 and 0.38), cement content (350 kg/m3 , 450 kg/m3 and 550 kg/m3 ) and aggregate size (2.83 mm, 5.66 mm and 8.00 mm), on the properties of pervious concrete in terms of water permeability, porosity and compressive strength. The obtained results revealed that aggregate size had the most significant effect on water permeability of pervious concrete. When a fixed water-cement ratio was considered, lower cement content provided higher porosity. Both in water permeability and porosity tests the highest values were observed for aggregate size of 8.00 mm. However, the results of the compressive strength test reached the highest value for the mixture with aggregate size of 5.66 mm, water-cement ratio of 0.35 and cement content of 550 kg/m3 .
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