CVC ReadyMix

Concrete and screed and are formed of the same basic ingredients – cement, aggregates and water. But what makes them different is the size of aggregates, the cement grade, mix consistency, and their intended application or use. Composition and Mix Proportion Concrete in its simplest form is a rock like mass formed by the hardening of cement paste and aggregates  mixed in a proportion of – 1 Cement: 2 Sand: 3 Coarse aggregates (ballast/gravel). But many variations are applied to this basic mix design to suit different uses and strength requirements. Screed  is a thin layer of cement paste and sand/ fine aggregates, laid onto a concrete floor base or under floor heating to act as a smooth flat levelling surface for taking on the final floor finish. Screeds generally follow a mix proportion of 1Cement: 3-5Sand (0-4mm washed sharp sand for levelling screeds). For heavy duty screeds 25 percent of the 0-4mm sand is replaced by 6-10mm single sized aggregates, making the...