Abstract
Permeable pavements are one of the most commonly-used sustainable drainage systems (SuDS) in urban areas for managing stormwater runoff problems. Porous asphalt is widely used in surface layers of permeable pavement systems, where it can suffer from accidental oil spills from vehicles. Oil spills affect bituminous mixes through the solvent action of the hydrocarbons on the bitumen, reducing the raveling resistance of asphalt pavements. In order to assess the raveling resistance in porous asphalt pavements, the Cantabro abrasion test was performed on 200 test samples after applying controlled oil spills. Three different types of binders were used: conventional bitumen, polymer-modified bitumen and special fuel-resistant bitumen. After analyzing the results, it was concluded that the most suitable bitumen to protect against oil leakages is the polymer-modified one, which is far better than the other two types of bitumen tested.
Highlights
Sustainable stormwater management has become one of the most important factors in the sustainable development of urban areas
It can be observed that the abrasion losses for the hydrocarbon-treated samples were very similar to those obtained for water-treated samples and higher than those obtained for air conditioned samples, indicating the important effect of water in the abrasion losses of porous asphalt mixtures (PAM)
A factorial ANOVA test was performed in order to assess the influence of the bitumen type and the treatment applied on the abrasion losses of the samples
Summary
Sustainable stormwater management has become one of the most important factors in the sustainable development of urban areas. The increasing runoff volumes coupled with the predominance of combined sewerage systems can increase the frequency of combined sewer overflows (CSOs) polluting the natural water bodies [2]. Permeable pavements are one of the most widely-used sustainable drainage systems (SuDS) in urban environments, helping with managing stormwater runoff and reducing the non-point pollution effects through the filtration provided by the different permeable layers that comprise their structure [2]. These sustainable systems have been widely used in low-traffic roads and in open air parking areas. One of the most common types of permeable surfaces in permeable pavements is porous asphalt, which is a special type of asphalt mix, with high void ratios, normally greater than 15%–20%, and high permeability values allowing water infiltration
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