<p>RCC-20SCBP: Compressive strength, fc = 20 MPa at 28 days on standard cylinders, cement conforming to BDS EN 197-1: 2003 CEM II/A-L/M/V/W 42.5N, sand of minimum FM 2.2 and 20mm down well graded crushed stone chips (LAA &lt;=35),, water reducing admixture of complying type A under ASTM C 494 [Using Batching Plant, Transit Mixer, Concrete Pump and bulk rate of Cement]<br>&nbsp;</p>