Air-entrained mixes
Tiny air bubbles in the concrete act as expansion chambers for freezing water. Non-air-entrained concrete in Duluth scales within 3–5 winters. Ours doesn't.

Concrete · Duluth, MN
Driveways. Slabs. Patios. Sidewalks. Foundations. Garage floors. Repair. Hercules Jr. is a full-service concrete contractor serving Duluth and the Twin Ports region — poured right, priced honestly, backed by a local LLC.
The concrete lineup

A concrete driveway is the single most visible piece of hardscape on your property — and in a Duluth winter, it has to fight freeze/thaw cycles, road salt, and plow trucks. We pour driveways that last.

Not every slab is a driveway or a garage floor. You need a pad for a shed, an AC condenser, a hot tub, an RV, or a new detached structure.

A good patio is where the summer happens. We pour patios the right way — proper base, reinforcement, and drainage away from the house — and finish them to match your taste.

A cracked, heaved, or tilted sidewalk is a trip hazard and a code violation waiting to happen. We pour new sidewalks, replace failed sections, and bring public-frontage walkways up to city spec.

Your foundation is the part of the building you see last and depend on most. We pour footings and foundations for new builds, garage additions, sheds-turned-permanent structures, and room additions.

A garage floor has to handle vehicle loads, hydraulic jack pressure, dropped tools, salt and snow melt, and occasional chemical spills. Shop floors see all of that plus forklifts, lift pressures, and heavy tooling.

Not every piece of bad concrete needs to be ripped out. Sometimes it does.
Why concrete in Duluth is harder
Duluth's freeze/thaw cycles, lake-effect humidity, road salt, and a 48-inch frost line kill concrete that was poured for an easier climate. Every pour we do is spec'd for here.
Tiny air bubbles in the concrete act as expansion chambers for freezing water. Non-air-entrained concrete in Duluth scales within 3–5 winters. Ours doesn't.
6 inches of compacted Class-5 under every slab. Anything less and frost heaves will find the thin spot and crack the slab there.
Cut at 25–30x the slab thickness, to a depth of 1/4 the slab thickness, within 12 hours of the pour. That's the math, and we do it.
#4 rebar in footings always. In driveways with heavy loads (RVs, duallies), in slabs bridging soil changes, in walls. We don't overspec and we don't cut corners.
Some contractors pour 3,000 PSI for residential to save money. We don't. The extra strength is cheap insurance against spalling and scaling.
Curing compound, wet cure, or blankets (winter) — we cure every pour. Fast-dried concrete is weak concrete.
Common questions
Tell us the job. We'll schedule a site visit within a few days and hand you a written, itemized estimate.