Abstract
The importance of permeable and pervious pavements in reducing urban stormwater runoff and improving water quality is growing. Here, a new pervious pavement block material based on recycled polyethylene terephthalate (PET) waste is introduced, which could contribute to reducing global plastic waste via PET’s utilization for construction material fabrication. The engineering properties and durability of recycled PET aggregate (RPA) pervious blocks are verified through flexural tests, in situ permeability tests, clogging tests, and freeze-thaw durability tests, and their cost-effectiveness is assessed by comparison with existing permeable/pervious pavers. Their engineering and economic characteristics confirm that the RPA pervious blocks are suitable for use in urban paving.
Highlights
Permeable pavement, including pervious concrete, porous asphalt, and permeable interlocking pavers, has been widely studied for the management of urban surface runoff and stream erosion problems [1,2,3], groundwater recharge [4], and prevention of pollutant inflow into water systems in urban water quality control [5]
Synthetic resin waste was used as the main binder in the production of pervious blocks from aggregates of recycled polyethylene terephthalate (PET) waste
The flexural strength test involved the application of a transverse load through a steel bearing plate (6 mm thick) along with the center line of an recycled PET aggregate (RPA) block supported by two rods 175 mm apart, as per American Society for Testing and Materials (ASTM) C67 requirements [24]
Summary
Permeable pavement, including pervious concrete, porous asphalt, and permeable interlocking pavers, has been widely studied for the management of urban surface runoff and stream erosion problems [1,2,3], groundwater recharge [4], and prevention of pollutant inflow into water systems in urban water quality control [5]. The rapid global growth of plastic production (288 million metric tons (Mt) in 2012; a 620% increase since 1975) is accompanied by an increasing plastic waste and pollution problem, with 35% of plastic waste being from the food packaging and beverage industries [12]. This increase in plastic waste causes serious environmental threats, especially to oceans and marine ecosystems [13,14]. Previous studies of plastic waste recycling have involved laboratory tests of engineering properties and in situ performance. The engineering performance of the blocks (flexural strength, in situ permeability, clogging, and freeze–thaw durability) was tested experimentally
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