Iran is the 8th cement producer in world and 2nd in the Middle East after Turkey.
In 2009 Iran produced some 65 million tons of cement per year and exported to 40
countries. There are 57 active production units in Iran as of 2010. As of 2010,
28 cement companies were listed on the Tehran Stock Exchange. Iran constitutes 1.8%
of the world’s cement production and 1.6% of the world’s cement consumption.
Cement used in construction is characterized as hydraulic or non-hydraulic. Hydraulic
cements (e.g., Portland cement) harden because of hydration, chemical reactions
that occur independently of the mixture's water content; they can harden even underwater
or when constantly exposed to wet weather.
The chemical reaction that results when the anhydrous cement powder is mixed with
water produces hydrates that are not water-soluble. Non-hydraulic cements (e.g.
gypsum plaster) must be kept dry in order to retain their strength.
The heart of concrete lies in the cement. Several tests should be performed to determine
the characteristics of cement and its compatibility with other materials in the
concrete mix design. Compressive strength testing of mortar cubes at 3 days, 7 days
and 28 days of aging are used to observe the development of the strength gain of
the mortar over time.
A chemical analysis of the cement will provide a reasonable estimate of the composition
of the cement. These are just a few of the tests that can be used to determine the
quality of the cement.
A basic list of some of the cement testing that our laboratory provides is listed
Analysis with XRF and XRD apparatus, Compressive strength
test and particle size analysing.
Due to the severe wearing down of components in cement industries
machinery such as grinding balls, liners,and hammers, the costs for these spare
parts are extremely high.
RMRC analysis can determine the type of wear and design and suitable
alloy for specific raw materials and environments.