Repairing the Future . . . How to deal with basement sinking seam leakage.

The sewn definition
vertical seams that are set up to prevent damage to the house caused by uneven subsiding of various parts of the building. When the height, load and structural form of the adjacent parts of the house are very different and the foundation is weak, the house may produce uneven subsidion, causing some weak parts to crack. To this end, the sinking seam should be set up at appropriate locations such as complex plane or body shape transitions, height changes, loads, compression of the foundation and the method of ground treatment are significantly different

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A project basement deformation seam appears a large leakage, after investigation found that the subsiding seam on both sides have a significant difference between high and low, vertical and ground gaps have clear water seepage, has used shallow polyurethane slurry repair after poor results, after the project side using the reverse water diversion method for temporary treatment.
Seat-site diagramleakage cause
the deformation seam on both sides of the upper structure is different, one side is a monomer high-rise building, the sequestration coefficient on both sides is not uniform, resulting in a larger one-sided sinking, beyond the original buried rubber water stopper stretch limit was pulled apart, so that waterproof failure to form leakage.
repair measures
the use of structural external solidified grout, sewn inside the multi-group high-elastic slurry material combined with embedded rubber water rod maintenance technology. At present, the construction has been completed, the effect is good.
remove the metal cover, finish material, rigid sealing material and in-seam filling material of the deformed seam surface;
Drill holes along the deformation seam interval, interval hole distance according to the actual situation of the project to determine, with cement grout machine cement-based grout material perfusion to the structural perimeter, the chamber surrounding the gap, harden the surrounding soil re-construction structure outside waterproof layer, blocking the structure outside water source
(according to the actual situation on the site to determine whether to implement structural peripheral cementing grout blocking measures);
the cementing material with high-strength concrete repair material to make a chisel groove into an equally wide gap, and reserve the slurry hole;
Embed polysulfur rubber rod, prefabricated polysulfur rubber rod embedded in the gap;
infuse high elastic high permeable grout blocking fluid through reserved holes (multi-group grout material is mixed into two parts at the construction site, the grout material reaction solidified to form a bubblegum-like peristaltic colloid, good bonding force, large pull);
. The side wall deformation seam surface is fitted with stainless steel cover;
ground deformation seam is treated well, the corner steel on both sides is used to support the placement of prefabribribribriited anti-pressure cover plate,
should be based on the leakage of specific projects, leakage reasons and the existing drainage equipment and arrangement in the basement, to determine whether to set up drainage precautions at the subsiding seam site.
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