### APPENDIX- A Mix Design Procedure of M20 Concrete

Mix Design Procedure of M20 Concrete (Reference Mix) 35 and 20mm maximum size of aggregate and natural sand conforming to zone-II, the water content and percentage of sand in total aggregate by absolute volume are 186 Kg/m3 and 35% respectively. For change in value of water – cement ratio and compaction fac-tor, the following adjustments are required according to IS: 10262 - 1982[8] in