Concrete

Introduction Shrinkage-reducing admixtures are chemicals added to fresh concrete to lessen the amount of drying shrinkage and help reduce the risk of hairline cracks on driveways, slabs, and countertops. They work with good mix design and finishing practices, not instead of them, so check product labels and manufacturer instructions for dosage and compatibility with other […]

Introduction Air-entrained concrete contains tiny, intentionally created air bubbles to help it survive freeze-thaw cycles, while non-air-entrained concrete does not have those bubbles and is denser. In plain jobsite terms: air-entrained mixes are commonly recommended where water can freeze inside the slab, and non-air-entrained mixes are used where freeze-thaw exposure is minimal or controlled. Check

Introduction Chlorides from road salt, deicing brine, seawater, and salt-laden runoff can move into concrete. They become a durability concern mainly when they reach embedded reinforcing steel: in the presence of enough moisture and oxygen, they can break down the steel’s protective condition and allow corrosion to start. Rusting steel can crack and displace the