Search Results for: efflorescence

Introduction Salt scaling risk on exterior slabs is the tendency for surface flaking and crumbling when moisture is drawn into the top layer and then freezes. This simple field check helps you spot potential damage before winter hits. If you see rough patches or powdery material forming, that can signal trouble. Signs to watch in […]

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 Dye penetrant testing is a simple non-destructive method to reveal hairline cracks in concrete that you can’t see with the naked eye. This article explains what it is, how it works at a DIY level, and what you can safely check yourself. You’ll get a plain, hands-on look at when to consider this method

Introduction Hammer sounding and chain drag are practical field tests to locate delaminations and hollow areas in concrete. You tap or drag along the surface and listen for changes in tone and feel. These methods help you decide where to drill, patch, or reinforce without guesswork. Hammer sounding uses a light tapping with a hammer

Introduction RH probes map moisture in concrete by measuring relative humidity within the slab and comparing it to a calibrated standard. They assess moisture deeper in the concrete rather than just the surface, giving a more complete picture for decisions on finishing or coatings. This article will compare that approach with handheld meters in plain,

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 Crushed glass as aggregate is using recycled glass pieces as the rock substitute in concrete. There is an alkali-silica reaction risk with crushed glass, which varies with glass type, particle size, and the concrete mix. Always check product labels, supplier instructions, and local rules for ASR guidance and suitability. Mitigation strategies include choosing less

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 Air-entrained concrete is concrete that contains tiny air bubbles added on purpose to improve performance. These bubbles come from air-entraining agents mixed in with the concrete. This helps the concrete resist damage from freeze-thaw cycles and cracking, especially in exposed or moisture-prone spots. Testing for air content can be done with pressure, volumetric, or