The usual proportion of ingredients in reinforced cement concrete is? Mark as favorite Copy Link Portland cement (1 part), clean sand (2 to 4 parts) and coarse aggregate (1 to 2 parts) Portland cement (1 part), clean sand (1 to 2 parts) and coarse aggregate (2 to 4 parts) Portland cement (1 part), clean sand and coarse aggregate (2 to 4 parts) any one of the above Check Answer