Resilient modulus of pavement unbound granular materials containing recycled glass aggregate

Amlashi, Sahar Mohsenian Hadad; Vaillancourt, Michel; Carter, Alan; Bilodeau, Jean-Pascal

doi:10.1617/s11527-018-1219-7

Cited by 18 publications

(10 citation statements)

References 23 publications

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“…In the last 20 years, recycled glass has been widely used in construction materials, specifically in bricks, normal concrete, pavement materials and asphalt concrete [19,24,25,26,27,28], which is a practice that reduces landfill operations and consumption of natural resources, and also minimizes greenhouse emissions [18,29]. In this respect, it is worth saying that in the case of building materials, recycled glass as aggregate in structural concrete is still not widely used.…”

Section: Introductionmentioning

confidence: 99%

Environmentally Sustainable Cement Composites Based on End-of-Life Tyre Rubber and Recycled Waste Porous Glass

et al. 2019

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In this paper, environmentally sustainable cement mortars were prepared with end-of-life tyre rubber (TR) and recycled waste porous glass (PG) as aggregates in order to obtain lightweight products characterized by renewable and not-pretreated materials specifically for indoor applications. The secondary raw materials were added as partial and/or total replacement of the conventional sand aggregate. The resulting lightweight specimens were characterized by rheological, mechanical, thermal, microstructural and wettability tests. Fine tyre rubber aggregates affected the cohesiveness of the composites, as opposite to coarse tyre rubber and porous glass. The flexural and the compressive strengths of the porous glass samples were higher than the tyre rubber samples because of the higher stiffness and good adhesion of the glass to the cement paste as observed by microstructural observations. On the contrary, an unfavorable adhesion of the tyre aggregates to the cement paste was observed, together with discrete cracks after failure without separation of the two parts of the specimens. The latter result can explain the best results obtained by tyre rubber mortars in the case of impact compression tests where the super-elastic properties of the elastomeric material were evidenced by a deep groove before complete failure. Moreover, the thermal conductivity decrease of the lightweight porous TR and PG composites was in the range of ~80–90% with respect to the sand-based samples, which suggests that they can be used as plasters and masonries, and, in the case of tyre rubber specimens, outside applications are not excluded as observed from the wettability tests.

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Section: Introductionmentioning

confidence: 99%

Environmentally Sustainable Cement Composites Based on End-of-Life Tyre Rubber and Recycled Waste Porous Glass

et al. 2019

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“…The gradation values for the control limestone sample are primarily maintained when limestone replacement by the crushed glass is employed. This replacement method allows for the substitution of limestone with crushed glass of similar size, thereby negating effects from variation in particle gradation [51]. This is an interesting approach as the volumetric replacement minimises the gradation variation by replacing an aggregate faction with a faction of the supplementary material consisting of similar-sized particles.…”

Section: Density/specific Gravity/bulk Densitymentioning

confidence: 99%

Application of Glass in Subsurface Pavement Layers: A Comprehensive Review

et al. 2021

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Glass-based goods are produced and consumed in relative abundance, making glass a material that is found in most households, thereby leading to its accumulation in alarming quantities throughout the globe and posing an environmental challenge. This being said, glass has been widely acknowledged to possess a variety of desirable physiochemical properties, making it suitable for utilisation as an engineering aggregate. The properties include its non-biodegradable nature, resistance to chemical attack, low water absorption, hydraulic conductivity, temperature-dependent ductility, alterable particle gradation, and its availability in a multitude of forms/chemical compositions. Owing to these properties, glass has been employed in a myriad of civil engineering studies and field trials to assess its efficacy as an engineering aggregate and to provide sustainable management schemes for waste glass. These studies/trials have incorporated glass in many forms, including fine recycled glass (FRG), medium recycled glass (MRG), coarse recycled glass (CRG), glass powder, glass fibres, foamed glass, and glass-based geopolymers. Although the beneficial properties of glass can be exploited in numerous engineering endeavours, this review paper focuses on the possible application of glass to subsurface layers of pavements. In turn, the current study centres on research studies/trials presenting results on the physicochemical, mechanical, and durability aspects of pavement layers (base, subbase, and subgrade) containing pure glass samples or glass as percentage replacements in materials, including but not limited to unbound granular materials (i.e., recycled concrete aggregate (RCA) and crushed rock (CR)) and clay soils. Through the knowledge compiled in this review article, it is reasonable to state that glass shows solid potential as a road pavement material.

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“…In addition, the authors mentioned that the degree of breakdown of the blends was within the acceptable limit as required of pavement subbase material. In another study, a recycled glass of 0-5 mm was mixed by volume with limestone 0-20 mm for stiffness and PD evaluation [33]. Different mixtures were prepared, but the optimum mix for sufficient stiffness and PD behavior was 25% recycled glass and 75% limestone.…”

Section: Introductionmentioning

confidence: 99%

“…The authors observed that low traffic stress state corresponding to bulk stress of 82 and 276 kPa had a minor impact and all mixtures studied in these stress state performed similarly. However, a decreasing stiffness trend was observed at high-stress levels [33]. A study that evaluated the frictional strength properties of crushed glass, kaolin and fine quarry blends showed that frictional properties of the soil increased with increased crushed glass content, making the mix suitable for backfilling and embarkment applications [34].…”

Section: Introductionmentioning

confidence: 99%

Repeated Load Triaxial Testing of Recycled Excavation Materials Blended with Recycled Phyllite Materials

et al. 2022

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Recycled Excavation Materials (REM) are becoming viable alternative construction resources due to their economic benefits. However, REM may be composed of weak rocks, e.g., phyllites, limiting the use in a base layer. The present paper attempts to further the knowledge of the mechanical performance of REM by performing Repeated Load Triaxial Tests (RLTT). REM are mixed with Recycled Phyllite Materials (RPM) in systematic blends of 0%, 25%, 50%, and 100%. The batches’ resilient modulus (MR) and permanent deformation (PD) characteristics were assessed to establish the maximum RPM allowed into REM while maintaining the required performance. Hicks and Monismith’s and Uzan’s models were used to characterize the stiffness behavior. A wide variation in the stiffness between the two materials was observed. Batches comprised of 0% RPM–100% REM and 25% RPM–75% REM showed high stiffness performance. The Coulomb model assessed the PD behavior, and the results showed a similar response for all batches. Unlike the stiffness, blended mixtures did not show sensitivity to increased RPM content in the PD. This study may help end-users to understand the performance of REM given the documented threshold on the allowable quantity of RPM in REM.

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Resilient modulus of pavement unbound granular materials containing recycled glass aggregate

Cited by 18 publications

References 23 publications

Environmentally Sustainable Cement Composites Based on End-of-Life Tyre Rubber and Recycled Waste Porous Glass

Environmentally Sustainable Cement Composites Based on End-of-Life Tyre Rubber and Recycled Waste Porous Glass

Application of Glass in Subsurface Pavement Layers: A Comprehensive Review

Repeated Load Triaxial Testing of Recycled Excavation Materials Blended with Recycled Phyllite Materials

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