Concrete Repair in Bloomer, Wisconsin.

Bloomer is unusual in that it publishes what makes a walk defective instead of leaving it to a judgment call, listing vertical differential between adjacent blocks, horizontal separation between them, and deterioration of the surface to a stated depth, with any one of the three enough on its own. It also provides that when 80 percent of an owner's sidewalk blocks come back defective the entire sidewalk is replaced, so a Bloomer walk that has gone in patches turns into a full frontage job. Anyone laying, removing, replacing or repairing a public walk needs a permit from the Street, Water and Sewer Administrator at least three days ahead, and there is no fee for it. In front of a commercial or industrial building the walk is five inches thick, seven inches within a driveway approach, at a width the Common Council sets.

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.