Search Results for: surface prep

Introduction Uneven color after washing means the surface shows inconsistent shade because cleaning or water exposure altered the finish. This happens when residue, detergents, or the top seal interact with the concrete and leave lighter or darker patches. The fix is practical and requires careful, in-place steps rather than a big overhaul. Start with a […]

Introduction Plastic shrinkage cracks are shallow cracks that form in fresh concrete as water evaporates quickly. Wind, sun, and heat speed up evaporation, making cracks more likely on sunny, breezy days. Keeping concrete surface moist and protected helps slow them down. Use a light mist or a covering to slow evaporation after you pour. Choose

Introduction Control joints are planned cuts in concrete to control where cracks will form. Timing matters for saw cutting; cut while the concrete has cured enough to groove, but before random cracking starts. Plan spacing and layout based on the panel sizes you’re using and how the slab will be loaded throughout its life. Strategic

Introduction Plastic marks on cured concrete are blotches and patterns left by plastic sheets or forms during curing. They form when moisture is trapped or imprints are picked up as the surface dries. To avoid them, plan your curing approach before you pour and keep the surface free of wrinkles or tacky plastics. Preventive measures

Introduction Shrinkage cracks are small splits in concrete that form as it dries and hardens. They often show up after pouring or settling, and they can run across slabs or near edges. Being aware of where they appear helps you decide if they’re a normal finish or a sign to watch closely. Identifying them means

Introduction Concrete rebar shadowing is when the lines of embedded steel rebar show up as darker or lighter lines on the surface after curing. This happens as moisture, temperature, and the metal interact during the cure, with the surface sometimes mirroring the rebar pattern. Differences in finishing between forms or around the rebar can further

Introduction An isolated concrete popout is usually a cosmetic surface defect only after you remove loose material and confirm that the surrounding concrete is sound and the defect is not related to steel, cracking, a joint, or delamination. Do not patch a cavity associated with exposed steel, active cracking, a moving joint, hollow concrete beyond

Introduction Concrete grinding dust control is the setup of shrouds and vacuums to keep dust from spreading. Use a shroud around the grinder and connect a vacuum with proper seals and hoses to capture dust at the source. Always follow the grinder and vacuum maker’s instructions for connections and filters. A clean cleanup workflow matters

Introduction Concrete curling is when the edges lift up compared with the center of a slab. This quick intro helps you spot the edge lift at a glance. It happens as the concrete dries unevenly or shrinks, leaving a visible edge rise. Curling and settlement are not the same thing: curling is edge lift, while

Introduction Alkali-silica reaction (ASR) is a concrete deterioration mechanism that can cause expansion and cracking. Map cracking, damp areas, deposits, or spalling can justify concern, but none of them confirms ASR on its own. Confirmation requires a field investigation combined with appropriate laboratory work, commonly including petrographic examination of concrete cores. Do not treat suspected