Concrete Waterproofing Help
Concrete Waterproofing Help
(OP)
I'm currently working on specifications for a waste water treatment project. For waterproofing, another engineer recommended Xypex or other similar crystalline type admixture for the concrete, though he did not have much else to tell me about it, and I have read what I can find on the web. The structure has large concrete tanks (a number of cells) which are mostly above ground (20' or more) and is required to have a rubbed finish on exterior surfaces. The structure was designed using the requirements of ACI-350 and no post-tensioning employed. Generally our specs call for coal-tar epoxy on the interior walls, but much of the interior will be exposed and I'd be concerned about its durability under UV besides the aesthetic which is important to the client for this project. The project is large with over 1000cy for just the walls.
1) Does anyone have experience with these types of admixtures & their applicability and 2) have a ballbark idea of their cost?
1) Does anyone have experience with these types of admixtures & their applicability and 2) have a ballbark idea of their cost?






RE: Concrete Waterproofing Help
RE: Concrete Waterproofing Help
If the client is worried about the aesthetics of the plant, use a form liner to create vertical ribs or rustications on the outside of the tank. Any leaking will concentrate at the ribs and not be as noticeable.
RE: Concrete Waterproofing Help
I have had success with Bituthene by Grace Construction products as a waterproof coating.
RE: Concrete Waterproofing Help
Proper control joints with PVC seals work well also; I usually spec the ones that fit flat against the formwork and bridge the joint.
Dik