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BARAD-658 - Cement Additive

Posted in: Groundwater Forum

Field Application Example for BARAD-658

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  • Gary Shawver

    RE: Cement v Bentonite as sealant

    Posted in: Groundwater Forum

    Jay, I found your commentary interesting. Thanks for posting. About 10 years ago or so, I was trying to figure out a way to grout PVC casing to depths of 400' to 500' or so, for domestic water wells. We have an area where we have to set 400'...

  • Gary Shawver

    RE: Cement v Bentonite as sealant

    Posted in: Groundwater Forum

    Steve, We have done several commercial geothermal pump and reinjection projects. All of them terminating in fractured limestone with some of the pumping and re-injection capacities reaching over 1,000 GPM. We have utilized neat cement in all...

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    RE: Cement v Bentonite as sealant

    Posted in: Groundwater Forum

    The report I saw concerning the Nebraska grout study showed water migration down the PVC cement interface. I suspect that the heat of hydration cased the PVC to expand. Then the cement hardened, the PVC cooled and pulled away from the cement. ...

  • Gary Shawver

    RE: Cement v Bentonite as sealant

    Posted in: Groundwater Forum

    Steve, I just saw your post from yesterday. So when I replied earlier, I had not seen it. I am curious as to why you aren't willing to consider bentonite grout slurries as an option for pressure grouting casing (am I correct in my interpretation...

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