When mixed with water, this light grey powder is applied as a cementitious slurry coat to above-grade or below-grade concrete, either as a single coat or as the first of a two-coat application. Xypex Concentrate is also mixed in Dry-Pac form for sealing strips at construction joints, or for the repairing of cracks, faulty construction joints and honeycomb.
Advantages of Xypex
- Becomes an integral part of the substrate
- Resists extreme hydrostatic pressure
- Can seal static hairline cracks up to 0.5 mm
- Highly resistant to aggressive chemicals
- Can be applied to the positive or the negative side of
the concrete surface
- Does not require a dry surface
- Non-toxic / no VOCs
- Is Permanent solution requiring no further maintenance
- Less costly to apply than most other methods
- Extends the service life of concrete
- No costly surface priming or leveling prior to application
- Does not require sealing, lapping and finishing of seams at
corners, edges or between membranes
- Does not require protection during backfilling or during
placement of steel, wire mesh or other materials
- Cannot puncture, tear or come apart at the seams
- Allows concrete to breathe
- Available in white for enhanced illumination
- Sewage and Water Treatment Plants
- Secondary Containment Structures
- Tunnels and Subway Systems
- Underground Vaults
- Parking Structures
- Swimming Pools
- Precast Components
Xypex Concentrate is available in 20 lb. (9.1 kg) pails, 60 lb. (27.2 kg) pails and 50 lb. (22.7 kg) bags.
For normal surface conditions, the coverage rate for each Xypex coat is 6 – 7.2 sq. ft./lb. (1.25 – 1.5 lb./sq. yd. or 0.65 – 0.8 kg/m2).
Xypex products must be stored dry at a minimum temperature of 45ºF (7ºC). Shelf life is one year when stored under proper conditions.
Coating Application - Method Statements
Xypex recommended installation procedures and general directions for waterproofing of concrete using Xypex Concentrate and Modified coatings.
Xypex recommended procedures for the repair of leaks and for the general waterproofing of below grade concrete structures performed on the negative side/inside of the structure.
Xypex recommended procedures for waterproofing CMU and concrete block structures from the positive or negative side.
Xypex recommended procedures to allow a rapid return to service of Xypex coated water holding structures (3 - 4 days from the start of material applications).
Xypex recommended procedures for application of thinset, plaster, stucco, cement parges, etc. onto Xypex Coatings.
Xypex recommended procedures for use of Xypex Coatings to waterproof dry mixed shotcrete (gunite) placed pools, fountains, etc that will receive tile, pool plaster or other additional overlaying finishes.
Xypex recommended Estimating Table is a guide only. Actual usage may vary according to the project.
Delhi Metro Rail Corporation (DMRC) Phase III & Phase IV
Due to the success of the Xypex surface-applied and repair system in various projects, the Delhi Metro engineering team consulted Xypex to provide a waterproofing solution for phase III. The engineering team specified Xypex Admix C-2000 NF and Xypex Concentrate for the waterproofing of phase III underground stations in conjunction with spray applied membranes on the rooftop slab.
Yankee Lake Regional Wastewater Treatment Facility
To start repair works, the general contractor, Crom Corporation, first blasted the old concrete surfaces with a 3,000-psi pressure washer to remove the old epoxy coating, then disinfected the substrate to remove bacteria present on the surface. After these steps, cracks and joints were repaired with Xypex Patch’n Plug and Concentrate.
Lafarge Cement Plant, Volos
For this project, Xypex Concentrate was applied in a single layer over 11,200 m2 of surface. With the Xypex Concentrate coating in place, both the existing and new concrete in the piers and girders have reduced chloride permeability resulting in extended time to corrosion and increasing the service life of the structure.
Köse İvedik Trade Center
The project engineers solved the problem differently;
instead of applying a membrane, they poured concrete
that incorporated Xypex at the batching stage.
Xypex Admix C-1000 NF was used to waterproof
over 15,000 cubic meters of concrete placed in the
structure’s basement from the casting stage. Also,
tie-rod holes and cold joint areas were repaired with
Xypex Patch´n Plug and Xypex Concentrate.
Chimney that was constructed in 1959 out of reinforced concrete and stands 80 meters high, upper part had damages and needed repairs. Damaged concrete was removed, rebar corrosion was eliminated and missing concrete was restored using the repair mortar. Xypex Concentrate and Xypex Gamma Cure was used under the surface finish for protection and hydroinsolation.