Sulfate in concrete has connotations of being negative and causing durability issues. Issues with sulfate in concrete do emerge when there is too much sulfate present, but it is actually a necessary component in a concrete mixture. As part of a concrete mixture, sulfate reacts with calcium aluminate in the cement, to help control the … Continue reading Why Does Sulfate in Concrete Matter?
Tag: material failure analysis
Potential Issues with Using Polyurethane Foam for Building Insulation
Polyurethane foam is extensively and increasingly being used as insulation and vapor barriers in homes and buildings. There are many different types of polyurethane foam which makes it a versatile material, having a range of practical building applications. Types of foam include open cell polyurethane, closed cell polyurethane, extruded polystyrene, expanded polystyrene, spray polyurethane foam, … Continue reading Potential Issues with Using Polyurethane Foam for Building Insulation
Why does chloride in concrete matter? What’s the difference between water-soluble chloride and acid-soluble chloride?
One of the most common chemical analyses performed on concrete is chloride analysis. Grouts, mortars, soils, and water samples are also often tested for chloride. Chloride is a negatively charged ion that has the ability to react with the iron in steel reinforcing, causing corrosion. This can lead to cracking of concrete due to the … Continue reading Why does chloride in concrete matter? What’s the difference between water-soluble chloride and acid-soluble chloride?
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