Quality Tests on cement are carried out to check the strength and quality of the cement used in construction. It helps to identify the usage of cement for different purposes based on its durability and performance.
The following tests are conducted on cement in the laboratory are as follows:
Fineness Test
Consistency Test
Setting Time Test
Strength Test
Soundness Test
Heat of Hydration Test
Tensile Strength Test
Chemical Composition Test
Fineness test on cement
The fineness of cement is responsible for the rate of hydration, rate of evolution of heat and the rate of gain of strength. Finer the grains more is the surface area and faster the development of strength.
The fineness of cement can be determined by Sieve Test or Air Permeability test.
Sieve Test: Air-set lumps are broken, and the cement is sieved continuously in a circular and vertical motion for a period of 15 minutes. The residue left on the sieve is weighed, and it should not exceed 10% for ordinary cement. This test is rarely used for fineness.
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