 Chat Online What to add to mortar to make it stick Apr 00 0000 · Measure three parts sand to one part masonry cement. For a basic mortar mix you ll want to mix essentially three parts of sand for every one part of cement you use. If you re mixing up a whole bag of cement that ll mean you ll use three times that amount of sand which will result in a big batch of mud. Also what is the mix ratio for mortar Chat Online 