Mortar and Concrete Mixes EzineArticles
As weights of sand and ballast or quarry chips etc. vary due to their water content, the following guidelines are given by volume. For a concrete path use 1:5, where 1 stands for ordinary dry cement, and 5 is for the sand and ballast. For concrete steps, make the mix maybe a bit stronger, 1:4. If you're laying bricks, it's 1:4 (soft sand).