Portland cement is used as the base for many cement and concrete mixtures utilized in various construction projects. Applied alone, Portland cement is too weak to make a good mortar for holding glass blocks in place when building glass block windows or walls. However, with the addition of a few ingredients available at almost any home improvement store, you can use your Portland cement as a very satisfactory adhesive and filler for your glass block project.
Instructions
1. Measure 1 part Portland cement, 2 parts clean sand and 3 parts washed coarse aggregate into a large bucket.
2. Add 1 part water to your dry ingredients. Mix the contents of the bucket together with a shovel or a hand-held cement mixer.
3. Add more water, a little at a time, until the consistency of your mixture resembles toothpaste. Add a little sand and aggregate if your mixture becomes too thin.
4. Use the prepared Portland cement to mortar your glass blocks as you install them as directed.
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