In situations where concrete either needs to be repaired or waterproofed and excavation is not an option, We offers negative side epoxy injection. If the concrete needs to be repaired, an epoxy can be shot through holes in the wall, spreading out over the target area. Where waterproofing is called for,a waterproofing grout may be shot through holes drilled into the target structure, which then spreads out and gels upon contact with water to form a water-tight barrier.
We has worked with owners and contractors to install the structural grout found under column base plates, precast concrete units, keyed joints between hollow core units, and cavities of various precast/structural connections. Langwei offers a wide range of grouting services,including the application of chemical grout and epoxy injections used for sealing cracks and joints in poured in place concrete foundation walls, concrete piping, containment tanks, water basins, and tunnels. These grouts are pressure injected into the cracks or voids where they then chemically react with water to form a closed cell foam or gel. This foam or gel then acts as a water-tight barrier, thereby sealing out unwanted water. Langwei can even utilize these grouts to stop flowing water through joints and cracks.
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