Abstract
Long-Term Tensile Behavior of a High-Strength Geotextile after Exposure to Recycled Construction and Demolition Materials
Highlights
Construction and demolition (C&D) wastes consist essentially of the debris resulting from activities ranging from excavation and site preparation to the construction, maintenance, rehabilitation, and demolition of buildings and other civil infrastructures
To analyze the potential chemical and environmental degradation induced by recycled C&D materials on the long-term response of this geosynthetic, test results for fresh specimens were compared with those for specimens that were previously exposed to recycled C&D materials and a clayey sand for 24 months under real environmental conditions
The initial axial strains for the fresh specimens, exhumed specimens from the recycled C&D material, and from the clayey sand ranged from 7.0% to 9.6%, 6.8% to 8.2%, and 6.7% to 9.4%, respectively, and generally increased with the applied load
Summary
Construction and demolition (C&D) wastes consist essentially of the debris resulting from activities ranging from excavation and site preparation to the construction, maintenance, rehabilitation, and demolition of buildings and other civil infrastructures. When measured in volume, C&D waste is the largest waste stream in the European Union, accounting for about 1=3 of all waste generated (European Commission 2018). In this context, C&D waste reuse and recycling is of global importance, since it can contribute to more efficient waste management in the construction sector, reducing the waste disposal volumes to landfill, and to attenuate the environmental impacts associated with the overexploitation of natural resources (Arulrajah et al 2013; Vieira and Pereira 2015b; Arulrajah et al 2017, 2020). The use of recycled C&D aggregates as an alternative backfill in the construction of geosynthetic-reinforced soil structures, such as embankments, slopes, and retaining walls, has recently been pointed out as a potential application that can offer significant project cost savings (i.e., by avoiding the use of more expensive conventional backfill materials), apart from contributing to sustainability and environmental protection (Santos et al 2013, 2014; Vieira et al 2016, 2020a, b)
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