Cement

Portland Cement Types (Based on ISIRI 389 – Iran):

  • Type I (Ordinary): General-purpose, most common, no special properties.

  • Type II (Modified): Provides moderate sulfate resistance, with lower heat of hydration.

  • Type III (High Early Strength): Gains strength quickly, suitable for repairs or cold-weather concreting.

  • Type IV (Low Heat): Produces minimal heat, used in massive concrete structures such as dams.

  • Type V (Sulfate-Resisting): High resistance to sulfate attack, ideal for saline soils and sewage environments.

All of the above types are defined under Iranian National Standard ISIRI 389 — similar to how cements are classified in other countries (e.g., M500 in Russia).

Bitumen Iran

Iran is one of the top 10 countries globally in terms of reserves and variety of ornamental and building stones.

 with over 6,000 quarries and 1,000 processing factories.

Major stones include travertine (Mahallat, Azarshahr), marble (Isfahan, Yazd, Kerman), granite (Mashhad, Natanz, Nehbandan), and onyx (Kerman, West Azerbaijan).






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