Trying To Repair Alkali Silica Reaction In Concrete

How do you repair alkali silica reaction in concrete? I wish there was a simply solution to achieving that. I had a homeowner call and tell me she was having small modules of gel leaching out of the concrete, and over time the gel would harden. She had an engineer come out and take samples of the concrete, they determined that she had alkali silica reaction or (ASR).

So I went over to the house to take a look at the problem and was amazed by what I saw. Take a look for yourself:

Alkali Silica Reaction

Alkali Silica Reaction

I’m sure you can figure out why this might be a problem. For starters she has a decorative overlay in the house that is peeling off because of this reaction. She also has sticky gel all over her floor which makes it difficult to keep clean. She asked if there was any way to prevent the gel from re-appear.

I asked a couple of different suppliers and manufactures about what can be done to stop this. For the most part they all told me the concrete has to be jack hammered out and re-poured, which is not feasible because the house is already built and she is living in it.  One person told me I can use a product called Aqua Block and that might help.

I told the homeowner I would not mind messing around with it seeing if anything will help the situation. I suggested to grind the concrete down where the ASR was happening, which happens to be where all of the structural beams are. After grinding the concrete I left one area untreated and another area I treated with Aqua Block to see if that will help at all. After a couple of months I will go back and check to see if their is any improvements. If anyone has any suggestions or questions on this issue please email me at mvlconcrete@yahoo.com.

Alkali Aggregate Reaction

Alkali Aggregate Reaction

Ground Concrete Exposed Aggregate

Ground Concrete Exposed Aggregate

Testing Aqua Blocks Treating ASR

Testing Aqua Blocks Treating ASR

Applying Aqua Blocks On Ground Concrete

Applying Aqua Blocks On Ground Concrete

 

 

 

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