Concrete Repair in Elk Mound, Wisconsin.

Elk Mound lists ponding as a defect in its own right. A sidewalk section out of conformance with design grade to the degree that water stands on it is grounds for repair or replacement, alongside cracked blocks next to a block already defective, and poles or trees creating a hazard. The village also decides where walk has to exist at all, and the trigger list includes any state or county highway improved with curb and gutter, any arterial or collector street improved the same way, and any residential block that already has sidewalk along half its length. Work on a public walk takes a permit from the Clerk-Treasurer or the Director of Public Works at least two business days ahead, and where the line of a walk would run hard into trees or their roots the Director can issue a written variance to move it. Subgrade comes out at least eight inches under a walk and ten inches where it crosses a private driveway, which is more excavation at an entrance than along a plain run, and the three school buildings on University Street have the longest public frontage in the village.

Four things take concrete apart here, and each one goes after a different part of a property. A sidewalk panel sits on saturated ground or over a root. The water under it freezes, expands and lifts the panel. In spring the ground thaws and settles, and the panel does not go all the way back down with it, so what was flush in October is a lip in April. Then a plow blade catches that lip every storm for five months and breaks the leading edge off it. A curb takes the plow head on. The blade rides up the gutter, catches the curb face and takes the nose off in chunks. Salted slush sits in the gutter longer than anywhere else on the lot, because the gutter is where everything on the lot drains to, so the gutter is where the surface scales first. De-icer does the same thing to flat concrete. Chloride pulls water into the surface and runs more freeze and thaw cycles through it in a season than the weather would on its own. The mortar skin comes off in flakes and the aggregate stands proud. The approach at the street is a joint between two slabs that belong to different people. The street sits on a road section and a deep base; the drive sits on whatever was there. Frost gets under the shallower one first, the apron cracks along the gutter line, and that crack takes water into the base under both of them.