Common Cement 32.5 Common cement can be used for any purpose, including reinforced concrete.If you are unsure as to the ultimate  use of the cement, this is the correct product.  Mix proportions are printed on the bag and to ensure a consistent quality product, one should not deviate from these.  It is also essential to ensure that other constituents within your concrete are of good quality, as contaminated water or poor quality sand will have a detrimental effect on your finished product.