Search Results for: MS with epoxy

Introduction Bond strength in repair mortars is how well the new mix sticks to the old surface. A strong bond matters more than it feels solid to the touch. I note things like the surface prep, moisture, and mix consistency as practical clues. Pull-off tests give a more explicit check than simply pressing on something. […]

Introduction Measuring concrete cover accurately means checking how far the rebar or embedded metal sits from the surface, instead of guessing and hoping it’s close enough. In practice, small errors in this measurement can lead to long-term problems like spalling or cracking under load and weather. For DIY work, treat cover as a real detail

Introduction Honeycombing in formed walls is a condition where voids and rough cement gaps appear on the surface, signaling poor compaction and near-surface voids. For DIY homeowners, identify it by a spongy or crumbling feel, visible voids, and a rough, uneven finish. Addressing it depends on how widespread it is and whether the inner steel

Introduction Concrete surface contamination tests tell you whether a surface is clean enough for bonding by revealing any residual oils, silicones, or waxes. For epoxy or other adhesives, you must verify cleanliness requirements with the product label and local rules, because expectations vary. If unsure, follow a basic check: a dry, dust-free feel and a

Introduction Chloride ion testing in old slabs is a way to find out whether salt exposure is the real problem behind concrete issues. It helps separate chloride-related damage from other moisture or subfloor failures. In plain terms, it’s part of diagnosing why a floor isn’t performing as you’d expect. Many times, moisture problems drive cracking,

Introduction Chloride penetration in concrete is the inward movement of chloride ions from the environment into the concrete and reinforcement area. In coastal areas, salt spray, moisture, and wet-dry cycles push chlorides into the concrete matrix. This can lead to corrosion of reinforcing steel and reduce the structure’s long-term durability. To slow chlorides down, choose

Introduction Laitance is a thin, weak surface layer of cement and fines on concrete that can ruin coatings if it isn’t removed. It often feels powdery or dusty and looks lighter or different from the surrounding concrete. If you leave laitance, coatings can fail early and moisture or dirt may trap under the finish. Removal

Introduction A bonding agent is a coating that helps new concrete grab onto old concrete, while cement slurry is a thin mix used to dampen and bridge the surface for bonding. In practice, you choose one or the other based on how you plan to join the pours and how the surface looks and feels.

Introduction A cold joint is a weak seam where a new layer of concrete fails to bond to the layer beneath it. They form when pours are interrupted or vibrations stop before the new mix is integrated with the old. Conditions like long wait times, cold temperatures, or poor surface prep can make it worse,