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- Oh man, this crack is getting bigger and bigger with time. I wonder why!
- I can tell you why, cracks are highways to outside chemicals. These chemicals are directly heading to the reinforcing steel and thus causing it to corrode
- I still don't understand why the crack is getting wider
- Well, once the steel corrode, it increases in size and thus it will need more space. To acquire this space, it will force the concrete to crack even more
- Concrete will always have cracks. We try to minimize that as much as we can. But, we should find a way to decrease the effect of having cracks and decrease the amount of chemicals passing through
- Then how can we prevent having cracks!
- Silane is a vapor permeable repair material. It is used to make the concrete itself as waterproof. It should block the water from penetrating through smaller cracks. It is not affected by shrinkage and it can last for a long time
- That makes sense, then what's the best way to do that?
- All the codes that we have now give us rules of thumb on what to do regarding cracks. However, the research we're conducting will allow us to figure that out
- What about bigger cracks?
- We expect that the silane will be effective to a certain crack size. After that, we're planning on using a product called MMA which will fill the crack and block outside chemicals from entering.
- The problem with MMA is that shrinkage might significantly affect its performance. So, we for even bigger cracks, we will be researching epoxy which will also fill the crack, but might be less affected by shrinkage
- So, what do you expect?
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