Introduction Carbonation depth mapping across a slab is the practice of measuring how far carbonation has penetrated the concrete across different spots. This helps you see where the concrete is more or less exposed to carbonation, not just at one point. In plain terms, you’re looking for variations rather than a single number. Why one […]
Carbonation Depth Mapping Across a Slab: Why One Test Spot Isn’t Enough Read More »
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
Measuring Concrete Cover in the Field: Why “Close Enough” Causes Long-Term Spalls Read More »
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
Salt Scaling Risk Test for Exterior Slabs: Simple Field Clues Before Winter Hits Read More »
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 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,
Concrete Moisture Mapping With RH Probes vs Handheld Meters: Choosing the Right Method Read More »
Introduction RCPT is a test that measures how fast chlorides pass through cured concrete. It’s a practical yardstick for judging how resistant your concrete may be to corrosion of embedded steel. This article breaks down what low permeability really means in plain language for DIY projects. We’ll cover the basic steps you’d see in an
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
Using Crushed Glass as Aggregate: ASR Risk, Mitigation, and Surface Finish Read More »
Introduction Recycled concrete aggregate (RCA) is processed concrete from demolition that is reused as aggregate in new concrete. It can be suitable for a slab, but it is not interchangeable with virgin aggregate: attached mortar usually makes it more absorptive, lower in specific gravity, and more variable. Use RCA only when the project specification, building
Using Recycled Concrete Aggregate in Concrete Slabs Read More »
Introduction Glass pozzolan and fly ash are supplementary cementitious materials that can boost concrete performance when used properly. They can improve strength development, workability, and finish quality, but results depend on the mix, curing, and finished surface. Always check the product label and follow manufacturer instructions and local rules for compatibility with your cement and
Glass Pozzolan vs Fly Ash: Performance, Finish, and Supply Realities in 2026 Read More »
Introduction Internal curing with lightweight aggregate is a method that uses porous, low-density aggregate inside the mix to keep moisture available for hardening. This approach helps manage moisture in thin slabs and countertops as they cure, especially when you’re working with limited thickness. Always follow the material instructions and local rules to ensure proper use.
