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Long-Term Tensile Behavior of a High-Strength Geotextile after Exposure to Recycled Construction and Demolition Materials
https://orcid.org/0000-0002-1001-2297
https://orcid.org/0000-0001-6328-4504
https://orcid.org/0000-0002-2390-4825
The use of recycled construction and demolition (C&D) materials as an alternative backfill in the construction of geosynthetic-reinforced structures, such as embankments and retaining walls, has been pointed out as a sustainable and effective means of attenuating the environmental impacts associated with C&D waste disposal to landfill, while also reducing natural resource depletion. Creep is an important time-dependent mechanical property that must be considered when geosynthetics are used in reinforcement applications. In this study, a series of creep rupture tests was carried out to characterize the long-term tensile response of a high-strength geotextile typically used for soil reinforcement. To assess the potential chemical and environmental degradation induced by recycled C&D aggregates on the long-term response of this geosynthetic, the creep strain and rupture behavior of fresh specimens was compared with that of specimens that were previously exposed to recycled C&D materials and a natural soil (used as a reference) for a period of 24 months, under real environmental conditions. Test results have shown that the short-term tensile strength properties of this geotextile can be considerably reduced after exposure to the backfill materials. Conversely, for long-term conditions, the exhumed specimens led to higher estimates of the retained strength at the design lifetime, implying that the use of fresh specimens for creep rupture testing is a conservative (i.e., safe) procedure with regard to the analysis of the long-term strength of this geosynthetic. Similar effects were induced by the exposure of the geotextile to the recycled C&D material and the natural soil, which supports the feasibility of using recycled C&D aggregates as a sustainable replacement to conventional backfill materials of geosynthetic-reinforced structures.
Long-Term Tensile Behavior of a High-Strength Geotextile after Exposure to Recycled Construction and Demolition Materials
https://orcid.org/0000-0002-1001-2297
https://orcid.org/0000-0001-6328-4504
https://orcid.org/0000-0002-2390-4825
The use of recycled construction and demolition (C&D) materials as an alternative backfill in the construction of geosynthetic-reinforced structures, such as embankments and retaining walls, has been pointed out as a sustainable and effective means of attenuating the environmental impacts associated with C&D waste disposal to landfill, while also reducing natural resource depletion. Creep is an important time-dependent mechanical property that must be considered when geosynthetics are used in reinforcement applications. In this study, a series of creep rupture tests was carried out to characterize the long-term tensile response of a high-strength geotextile typically used for soil reinforcement. To assess the potential chemical and environmental degradation induced by recycled C&D aggregates on the long-term response of this geosynthetic, the creep strain and rupture behavior of fresh specimens was compared with that of specimens that were previously exposed to recycled C&D materials and a natural soil (used as a reference) for a period of 24 months, under real environmental conditions. Test results have shown that the short-term tensile strength properties of this geotextile can be considerably reduced after exposure to the backfill materials. Conversely, for long-term conditions, the exhumed specimens led to higher estimates of the retained strength at the design lifetime, implying that the use of fresh specimens for creep rupture testing is a conservative (i.e., safe) procedure with regard to the analysis of the long-term strength of this geosynthetic. Similar effects were induced by the exposure of the geotextile to the recycled C&D material and the natural soil, which supports the feasibility of using recycled C&D aggregates as a sustainable replacement to conventional backfill materials of geosynthetic-reinforced structures.
Long-Term Tensile Behavior of a High-Strength Geotextile after Exposure to Recycled Construction and Demolition Materials
https://orcid.org/0000-0002-1001-2297
https://orcid.org/0000-0001-6328-4504
https://orcid.org/0000-0002-2390-4825
The use of recycled construction and demolition (C&D) materials as an alternative backfill in the construction of geosynthetic-reinforced structures, such as embankments and retaining walls, has been pointed out as a sustainable and effective means of attenuating the environmental impacts associated with C&D waste disposal to landfill, while also reducing natural resource depletion. Creep is an important time-dependent mechanical property that must be considered when geosynthetics are used in reinforcement applications. In this study, a series of creep rupture tests was carried out to characterize the long-term tensile response of a high-strength geotextile typically used for soil reinforcement. To assess the potential chemical and environmental degradation induced by recycled C&D aggregates on the long-term response of this geosynthetic, the creep strain and rupture behavior of fresh specimens was compared with that of specimens that were previously exposed to recycled C&D materials and a natural soil (used as a reference) for a period of 24 months, under real environmental conditions. Test results have shown that the short-term tensile strength properties of this geotextile can be considerably reduced after exposure to the backfill materials. Conversely, for long-term conditions, the exhumed specimens led to higher estimates of the retained strength at the design lifetime, implying that the use of fresh specimens for creep rupture testing is a conservative (i.e., safe) procedure with regard to the analysis of the long-term strength of this geosynthetic. Similar effects were induced by the exposure of the geotextile to the recycled C&D material and the natural soil, which supports the feasibility of using recycled C&D aggregates as a sustainable replacement to conventional backfill materials of geosynthetic-reinforced structures.
Long-Term Tensile Behavior of a High-Strength Geotextile after Exposure to Recycled Construction and Demolition Materials
J. Mater. Civ. Eng.
Bessa Ferreira, Fernanda (author) / Pereira, Paulo (author) / Silva Vieira, Castorina (author) / Lurdes Lopes, Maria (author)
2022-05-01
Article (Journal)
Electronic Resource
English
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