SIGMA TEST & RESEARCH CENTRE has experience in testing wide range of construction materials,including Cement,Concrete, Aggregates, Admixture, Flyash, Masonary, Tiles, Wood, Steel, Aluminium, Bircks, Query stones,WMM, GSB and many more.

1. Cement Testing

2. About
Cement Testing
• Chemical analysis of hardened concrete can provide a wealth of
information about the mix constituents and possible causes of
deterioration.
• Standard methods can be used to find the cement content and original
water/cement ratio, but many other properties can also be established;
Cement Content and Aggregate Cement Ratio, Cement Content and
Pulverised fuel ash/fly ash (pfa) content, Cement Content and Slag
content, Water/Cement Ratio, Aggregate Grading, Determination of the
presence of High-Alumina Cement (HAC).

3. • Compressive strength:
The most common strength test, compressive strength, is carried out on a
50 mm (2-inch) cement mortar test specimen. The test specimen is
subjected to a compressive load (usually from a hydraulic machine) until
failure.
• Fineness:
The fineness of cement has an important bearing on the rate of hydration
and hence on the rate of gain of strength and also on the rate of evolution
of heat. Greater fineness increases the surface available for hydration,
causing greater early strength and more rapid generation of heat. Cement
fineness play a major role in controlling concrete properties. Fineness of
cement affects the place ability, workability, and water content of a
concrete mixture much like the amount of cement used in concrete does.

4. Sigma Test & Research Centre
Address: BA-15, Mangolpuri Industrial Area Phase-
II Delhi-110034(India)
Ph No: +91-11-49491414/15
Fax: +91-11-4385 2040
Email: info@sigmatest.org
Email: rahul@sigmatest.org
Website: www.sigmatest.org,
http://www.sigmatest.org/Cement-Testing.html
Contact person: Mr. Rahul Gupta
Mobile: +91- 9811565000