Bonding Old and New Concrete (9/9)

If you’ve ever tried to patch old concrete or cement, or have tried expanding an existing concrete or cement walk with new concrete or cement, you might not have had good luck. Old cement resists bonding to new cement. There is a way to correct this, though.

Immediately prior to pouring the new concrete/cement, thoroughly wash the old concrete/cement with vinegar. Cement is an alkali base and vinegar is an acid. Using the vinegar softens the old cement temporarily until it dries, so it is more apt to bond with new cement or concrete as the new stuff dries.

These are just a few tips and tricks that can help around the home and garden. There are hundreds or thousands more. What is your favorite household trick?

Written by Rex Trulove