Equal Volumes of Sand and Gravel Concrete Mix Ratios in Cameroon and Its Effect on Concrete Compressive Strength

In recent years, the rationalization of concrete mix ratios which batches equal volumes sand and gravel in building projects has been gaining grounds Cameroon construction industry. The main objective this study is therefore to investigate if produced with rationalized ratio can be adopted as conventional terms minimum required compression strength for buildings. Specifically work compared 350 kg cement: 400 liters sand: 800 a cubic meter batch 600 5/15 gravel, 15/25 combination + gravel. Average compressive test results both were found meet 65% at 7 days, 90% 14 days 99% 28 size 15/25. Single did not 20 N/mm2 curing based on required, arrives conclusion that kg/m3