Water-Washed Fine and Coarse Recycled Aggregates for Real Scale Concretes Production in Barcelona

The use of recycled aggregate to reduce the over-exploitation raw aggregates is necessary. This study analysed and categorised properties water-washed, fine coarse, following European Normalization (EN) specification. Because their adequate properties, zero impurities chemical soluble salts, plain concrete was produced using 100% aggregates. Two experimental phases were conducted. Firstly, a laboratory phase, secondly, an on-site work consisting real-scale pavement-base layer. workability concretes validated two types admixtures. In addition, compressive flexural strength, physical drying shrinkage depth penetration water under pressure design. authors concluded that worksite-produced similar those obtained in laboratory. Consequently, results could be for large-scale production. An extended slump value achieved 2.5–3% multifunctional admixture plus 1–1.2% superplasticiser all required strength 20 MPa. Although 300 kg cement, made with 270 cement per m3 water/cement ratio 0.53 best lowest environmental impact.