Once we had dry stacked all the 12" blocks that made up the front frost footings I needed to surface bond them together. The surface bonding process is not a new technique and studies have shown that it is stronger than a mortared wall. I was mostly attracted to the fact that I did not need to be a brick layer to dry stack cement blocks, and with the use of SBC I could make a wall that was stronger than mortar with no prior experience.
The process is started by mixing a product called surface bonding cement and water. I used Quickbond (a Quickcrete product) and it worked well. Be sure you do not get it on your hands. I got big time chemical burns from it in a real short time. After mixing the batch to my desired consistency I would fill a pail and trawl the SBC to the wall. It was fast and was not to difficult. Since the coating is only about an 1/8 - 1/4" thick you need to presoak the wall, and also keep the SBC wet down for as long as practical to let it dry slower. The SBC needs to be applied to both sides of the wall to be effective. I should also mention that it is water proof once it is set.
|This is how you get running water with no electricity to the build site.|
|The SBC is applied to full thickness in one coat.|
|Hear you can see that I presoaked the wall ahead of applying the SBC.|
|See how the SBC is drying. I tryed to keep it damp for 4 hours or so after application.|