|
PERMACRETE® Systems Limited provides a superior method of concrete repair, utilizing PERMACRETE® brand products. The most common type of repair for cracks has typically been the use of surface patches on the inside, or excavation and patching the crack on the outside with a cementitious material and/or roofing tar. Epoxy or chemical injection of cracks is also common. These repairs do not function through prolonged cycles of contraction and expansion of the concrete as a result of thermal cycling. These are generally temporary measures in stopping an actively leaking crack. The best method of crack repair is to put a flexible gasket through the entire wall thickness. To achieve this, PERMA-SEAL® Flexible Resins were developed. As all resins are injected from the inside utilizing THERMO-JET® technology, customers do not experience the expense or inconvenience of disturbing their landscaping. These specially formulated repair materials are injected as a liquid in a precise, carefully monitored fashion, utilizing exact pressure to ensure penetration through the entire wall thickness. As they fill the crack and all capillaries, from the bottom to the top and from the inside out, they form a custom-fit seal by thermally fusing to the concrete. PERMA-SEAL® Flexible Resins are two-component, thermosetting, fast reacting, high tensile strength prepolymer elastomers. Because PERMA-SEAL® Flexible Resins allow for movement within the wall, our licensed dealers can offer their clients a guarantee that the repaired crack will not leak for as long as they own the property. PERMACRETE® has successfully completed injection projects which include:
Cracks in foundation walls are a common occurance and are caused by shrinkage, settlement, thermal cycling or structural defects. Cracks usually propagate the entire thickness of the wall and extend from the top of the foundation wall to the bottom. Shrinkage Cracks usually occur in locations where there is a designated opening or a reduction in the height of the foundation walls. Common places to find these cracks are at the bottom corners of windows and from the bottom corner of a 90° stepdown in a foundation. Shrinkage cracks tend to be slightly diagonal in orientation. Settlement Cracks occur more towards the center of a particular wall and are slightly wider at the top and can become very hairline at the bottom. These cracks are typically vertical in orientation. Expansion Cracks occur because of thermal cycles which cause expansion and contraction of the concrete. This change in volume puts additional pressure on any existing stressed points, resulting in a crack. The crack actually forms an expansion joint to allow for this movement. Therefore, a flexible repair material maintains the expansion joint while sealing the joint against leakage! Structural Cracks occur because of construction defects that affect the integrity of the foundation wall. They usually have an exterior cause that may need to be addressed before the foundation can be repaired. Eg. Retaining walls, stairwells, bulkheads, steps. CRACK-WELD epoxy is is water insensitive and formulated for structural repairs. |
|||
|---|---|---|---|
Perma-Dry, a registered trademark in USA of Permacrete Systems Limited Copyright © 1999 Permacrete® |