The most commonly used estimates for pH of concrete are 13 for plastic (fresh) concrete and about 10 for hardened concrete with a little age to it.
My company manufactures a polyester geogrid that is coated with PVC. We sell these grids into underground mines, as well as many aboveground civil engineering products. We have a new grid that may work very well as an auxiliary reinforcement for shotcrete-type products. Can you tell me what the pH is for these products? The type that we would be exposed to is used in underground mines to reinforce the mine roofs.
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