Transforming Construction and Demolition Waste into Soft-Soil Treatment for Paving Design

Abstract Construction and demolition wastes (CDW) are a concern in urban areas, addition, it is well understood that soft soils inappropriate for paving designs. Therefore, this paper presents an alternative solution combining CDW silty soil, aiming to overcome the soil drawbacks by repeated loadings. For purpose, laboratory study was developed, comprising both resilient modulus (M R ) unconfined compressive strength (UCS) tests over soil-CDW compacted blends, evaluate mechanical properties of proposed stabilization. Also, three compaction efforts (standard, intermediate, modified) curing time up 90 days were used. The UCS blends also measured with identical specimens which resilience carried out. results indicated incorporating (size sand gravel materials) into improves qu M all energies, Resilient Modulus test affects increasing its effect decrease effort. Repeated loads caused specimen's voids whereby density increased and, therefore, q u . Finally, conclude mixtures intermediate effort 40–60% weight potentially applicable pavements compared traditional soil–cement base/subbase.