Repair of damaged slabs and horizontal elements
Common issues and queries you can face
Step by step solution
The surface preparation of horizontal elements aims to eliminate all defections and assure horizontality of the slab or element.
The surface should be grinded to put out the slab level; and then cleaned from dust, grease or any other material that could prevent the adhesion of the repair product. Where the element has a small differentiation in leveling, grinding would be enough for the leveling. In case of bigger slope difference, it is recommended to use a scarifying machine before grinding the surface.
Repair of such damages should be observed as follows, depending on the repair dimensions:
• Small defects or imperfections:
Use weberep epo 412 CRY, a solvent-free, 2-component epoxy paste and fairing coat capable to fill pinholes and cracks and adjust small imperfections of a concrete slab.
• Defects above 10 mm thickness:
Use weberep epo 420 SC, a solvent-free 3-component epoxy based mortar capable to fill damaged patches in concrete slabs. Due to its high strength and bonding power, weberep epo 420 SC will resist medium to heavy load traffic.
Mix first mechanically the 2 epoxy parts until a homogeneous mix is obtained. Pour slowly the 3rd part (fillers) while mixing thoroughly until reaching a thick flowable mortar.
Apply weberep epo 420 SC by pouring onto the required area to patch. Level it properly with a steel float.
Re-instating the proper shape can be achieved using weberep epo 410 RSA, a solvent-free epoxy mortar composed of 3 components (2 parts epoxy and 1 part fillers) capable to repair the edges due to its high bonding and strength properties.
Mix first mechanically the 2 parts epoxy until a homogeneous mix is obtained. Pour slowly the 3rd part of filler while mixing thoroughly until reaching a thick paste.
Apply the mix with a spatula and wait for a while. Before hardening, smoothen the surface with a steel float in order to reinstate the original shape.