Geotechnical characterization of recycled C&D wastes for use as trenches backfilling

Pullout Behaviour of Geogrids Embedded in a Recycled Construction and Demolition Material. Effects of Specimen Size and Displacement Rate

“…This suggests that the reliance on natural aggregates in geotechnical applications is high and the inclusion of recycled aggregates can contribute significantly to preserve the environment. In view of the above, several studies have recently been conducted to evaluate the feasibility of using recycled C&D wastes in diverse geotechnical applications, such as ground improvement works [8,9], pipe bedding and backfilling [10,11], construction of paved and unpaved roads [12][13][14][15][16][17][18] and backfilling of geosynthetic-reinforced structures [19][20][21][22].…”

“…Rodrigues et al [25] evaluated physical and chemical properties relevant for the incorporation in concrete of 10 samples of fine aggregates from C&D waste obtained from seven Portuguese recycling plants and concluded that none of the samples has all characteristics within the limits imposed in the European Standards to allow its incorporation in concrete. Based on these evidences, a research study has been carried out to evaluate the feasibility of using these recycled materials in the construction of structural embankments, in particular geosynthetic reinforced embankments [11,20,21].…”

Short-term tensile behaviour of three geosynthetics after exposure to Recycled Construction and Demolition materials

“…Recycled Construction and Demolition (C&D) aggregates have been considered as alternative materials in several civil engineering applications, such as unbound pavement layers [1][2][3][4], as cement stabilized or geopolymer-stabilized material in pavement base/subbase applications [5][6][7][8], as backfill material for geosynthetic reinforced structures [9][10][11][12][13], as pipe backfilling material [14,15] and as aggregates for concrete production [16][17][18]. In some of those applications, geosynthetics, particularly geogrids and high strength geotextiles, are used as reinforcement elements of the recycled materials.…”