Aggregates Coarse aggregates Compressive strength Concrete aggregates Controlled Low Strength Materials (CLSM) Controlled low strength materials Controlled low-strength material Fine aggregates High-strength Hydrated lime Mass percentage Maximum strength Mixtures Paper sludge ash Paper waste sludge Portland cement Recycle Concrete Aggregate (RCA) Recycled coarse aggregate Recycled concrete aggregates Recycling Strength assessment Strength development Tankers (ships) Uniform mixtures Waste Paper Sludge Ash (WPSA) Waste paper compressive strength