Analysis of the effect of incorporating construction and demolition waste on the environmental and mechanical performance of earth-based mixtures

Paula, Adilson C.; Jacinto, Cláudia; Turco, Chiara; Fernandes, Jorge Emanuel Pereira; Teixeira, E.R.; Mateus, Ricardo

doi:10.1016/j.conbuildmat.2022.127244

Cited by 4 publications

(1 citation statement)

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“…Utilizing industry byproducts in engineering works can enhance the energy efficiency and provide benefits from social, technical, economic, and environmental perspectives. For example, scrap tire strips are a feasible alternative for soil reinforcement [13], and recycled aggregates from construction and demolition waste (CDW) have been successfully used in cementitious materials, in road pavement layers, and as backfills in retaining walls [14][15][16][17][18][19][20][21][22][23][24][25][26]. However, a more insightful understanding of their performance in terms of soil-reinforcement resistance mechanisms is needed for further applications as fills in MSE walls due to the existing deficiencies in design procedures and technical literature relative to this usage [27,28].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Construction and Demolition Waste and Other Alternative Fills for Strip-Reinforced Soil Walls

et al. 2023

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This article assesses the pullout performance of ribbed metallic strips embedded in fill soils that do not conform to conventional design criteria for mechanically stabilized earth (MSE) walls. These alternative fill soils include gravelly and sandy recycled aggregates from construction and demolition waste, artificial and natural sands, and fine-grained lateritic soil. The research included soil characterization tests and large-scale pullout tests, conducted as part of this study. The results showed that the reinforcement pullout behavior was similar for recycled, artificial, and natural sands, indicating that soil particle size played a crucial role in mobilizing the interface pullout resistance. However, in the case of recycled sand, stress concentration at the reinforcement level led to particle crushing during pullout conditions, causing this material to exhibit less efficient performance compared to other sands. The fine-grained lateritic soil demonstrated inferior behavior compared to sandy soils, despite the interparticle bonding provided by the sesquioxide coating characteristic of intensely weathered tropical soils. Finally, an analytical prediction tool based on experimental results was developed, providing an alternative method to make conjectures about the performance of different soils during the pre-design stages, particularly based on particle size attributes.

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