Question

What is the effect of high heat in concrete?

1) Lower strength
2) Higher strength
3) Reduced slump
4) Scaling

Answer 1

High heat can lower the strength of concrete, reduce its slump, and cause scaling.

Step-by-step explanation:

High heat can have several effects on concrete:

1. Lower strength: Exposing concrete to high temperatures can cause it to lose strength and become weaker. The heat can lead to the formation of microcracks in the concrete, reducing its overall strength.
2. Reduced slump: Slump refers to the workability or fluidity of concrete. High heat can cause the concrete to lose water content, resulting in a reduced slump and making it more difficult to work with.
3. Scaling: Scaling is the flaking or spalling of the concrete surface. High heat can cause the surface of the concrete to expand and then contract rapidly, leading to the formation of cracks and pieces of concrete breaking off.