What is the quality of concrete?

The quality of concrete is affected by different physical and mechanical properties of aggregate, i.e. shape, grading, durability, specific gravity and water absorption etc. these properties of aggregated should be tested before using it for concrete production.

How do you test concrete for moisture?

Concrete moisture testing methods This test involves taping an 18” x 18” polyethylene sheet to a concrete surface and then waiting at least 16 hours. Visible condensation on the sheet or darkening of the concrete indicates excessive moisture. Any coating applied to the surface may be at risk of failure.

What field tests are required for quality check of cement?

Several tests such as smoothness, smell, color, setting, strength, temperature tests are available and employed to examine cement quality in the field. What is the cause of lump presence in cement? Moisture absorption from atmosphere is the cause of lump presence in cement.

Are there different qualities of cement?

In the construction industry, there are different types of cement. The differences between each type of cement are its properties, uses and composition materials used during the manufacturing process.

What is quality control of cement?

Quality control is an important aspect of cement production. Sample preparation is an essential part of it, because only a representative and reproducible processing of the sample material ensures reliable and meaningful analysis results.

Should a concrete slab be level?

Concrete surfaces should never be perfectly level, but need to drop 1/4 inch per foot in one direction so that water drains readily from the surface when it rains. Form boards are staked into place along the perimeter of the area where the concrete will be poured and are typically removed after the concrete dries.

How deep can self-leveling concrete be?

QUIKRETE® Self-Leveling Floor Resurfacer (No. 1249-50) can be installed from 5/8 inch (16 mm) thick to a feather edge. For areas deeper than 5/8 inch (16 mm), apply QUIKRETE® Self-Leveling Floor Resurfacer (No. 1249-50) in layers no greater than 5/8 inch (16 mm) each.

What is a moisture test?

Moisture meters are used to measure the percentage of water in a given substance. This information can be used to determine if the material is ready for use, unexpectedly wet or dry, or otherwise in need of further inspection. Wood and paper products are very sensitive to their moisture content.