The world's most produced and traded cement. OPC is a calcium silicate hydraulic binder produced by grinding Portland clinker with a small quantity of calcium sulfate (gypsum). It develops strength rapidly and is compatible with virtually all construction applications. In Türkiye and under EN 197-1, OPC is classified as CEM I and produced in three strength classes: 32.5 N, 42.5 N, 42.5 R and 52.5 N/R — where N denotes normal and R denotes rapid early strength gain.

Under ASTM C150, the equivalent type breakdown is: Type I (general purpose), Type II (moderate sulfate resistance / heat of hydration), Type III (high early strength), Type IV (low heat of hydration for mass concrete) and Type V (high sulfate resistance). Different markets specify ASTM or EN standards depending on regulatory requirements.

• General structural concrete
• Residential & commercial buildings
• Precast concrete elements
• Roads & pavements
• Industrial floors
• Concrete pipes & blocks

Portland Composite Cement is the highest-volume cement type produced in Türkiye and increasingly dominant in European and Middle Eastern markets. CEM II is produced by replacing 6–35% of clinker with supplementary cementitious materials (SCMs) including fly ash (V), granulated blast-furnace slag (S), limestone (L/LL), silica fume (D) or natural pozzolan (P/Q). Each sub-type designation indicates the SCM used: CEM II/A-LL, CEM II/B-V, CEM II/A-S, etc.

The clinker substitution reduces CO₂ emissions per tonne of cement produced, improves workability of fresh concrete, and in many subclasses enhances long-term durability and resistance to chemical attack. CEM II cements are available in strength classes 32.5 N/R, 42.5 N/R and 52.5 N/R.

• General construction
• Mass concrete (lower heat variant)
• Concrete with reduced permeability requirements
• Sustainable construction programs
• All applications where OPC is used

CEM III cements contain 36–95% granulated blast-furnace slag (GBFS) as clinker replacement, with sub-classes CEM III/A (36–65%), CEM III/B (66–80%) and CEM III/C (81–95%). GBFS is a latent hydraulic material — it reacts slowly but produces extremely dense, low-permeability hydration products over time. This gives BFSC concrete exceptional resistance to chloride penetration, sulfate attack and alkali-silica reaction.

The slow heat of hydration makes CEM III cements particularly valuable for mass concrete pours (foundations, dam walls, thick raft slabs) where thermal cracking must be prevented. Long-term compressive strength often exceeds that of equivalent OPC concretes at 90 and 365-day ages.

• Marine structures & harbours
• Mass concrete foundations
• Sewage treatment plants
• Underground structures
• Bridges and dam walls

Pozzolanic cement is produced by intergrinding Portland clinker with natural or industrial pozzolans — siliceous or siliceous-aluminous materials that react with calcium hydroxide in the presence of water to form cementitious compounds. Common pozzolans include volcanic ash, pumice, calcined clay (metakaolin), fly ash and rice husk ash. CEM IV sub-classes are CEM IV/A (11–35% pozzolan) and CEM IV/B (36–55% pozzolan).

Pozzolanic cements produce concrete with lower permeability and improved resistance to sulfate attack, making them highly valued in aggressive chemical environments. Their lower early strength is offset by superior long-term performance and reduced lifecycle maintenance costs.

• Aggressive chemical environments
• Coastal and marine construction
• Wastewater treatment facilities
• Agricultural buildings (ammonia exposure)
• Geothermal zones

CEM V is a multi-component cement combining Portland clinker with both granulated blast-furnace slag and pozzolans (fly ash or natural pozzolan). Clinker content is 20–64%, with slag at 18–50% and pozzolan at 18–50%. This tri-component blend offers the combined durability advantages of both slag and pozzolanic supplementation.

CEM V cements are gaining traction in sustainability-focused procurement programs as they represent significant reductions in clinker factor — and therefore CO₂ intensity — without sacrificing long-term structural performance. Available in strength classes 32.5 N and 42.5 N.

• Low-carbon construction programs
• Green building certification projects
• Infrastructure with long design life requirements

White Portland Cement is produced from raw materials with extremely low iron and manganese oxide content, yielding a bright white final product. It achieves the same structural performance as grey OPC but enables a full spectrum of pigmentation and architectural finishes. Whiteness index typically exceeds 85 (ISO 2469). Türkiye is one of the world's leading producers of white cement — brands such as Çimsa and Cimko supply global markets from modern kiln facilities.

White cement is used wherever aesthetics and color control are required: precast facades, terrazzo flooring, architectural concrete, colored paving, swimming pool renders and tile grout. It is also the base material for white-based dry mortars and specialty construction chemical products.

• Architectural facades & cladding panels
• Decorative precast
• Swimming pools
• Terrazzo & polished concrete
• Colored concrete products
• Grout and tile adhesives

Sulfate-Resistant Cement is specifically engineered to resist chemical attack by sulfate ions present in soil, groundwater and seawater. This is achieved by limiting the tricalcium aluminate (C₃A) content of the clinker to a maximum of 5% (SR5) or 3% (SR3) under EN 197-1, or below 5% under ASTM C150 Type V. C₃A reacts with sulfates to form expansive ettringite, which causes cracking and structural disintegration in conventional cement concrete.

SRC is mandatory specification in many GCC (Gulf Cooperation Council) construction codes where aggressive saline groundwater is prevalent. It is also specified for marine structures, sewage pipework, industrial foundations in chemically aggressive soil, and underground construction in sulfate-bearing rock formations.

• Marine & offshore foundations
• Sewage infrastructure
• GCC coastal construction
• Chemically aggressive soil zones
• Desalination plant structures
• Underground retaining walls

Masonry cement is a factory-blended product containing Portland clinker, limestone, air-entraining agents and plasticizing additives. It is specifically formulated for mortar applications — brickwork, blockwork and render — where workability, water retention, bond strength and freeze-thaw durability are more important than high compressive strength. Under EN 413-1, masonry cement is classified in strength classes MC 5, MC 12.5 and MC 22.5.

The pre-blended composition of masonry cement reduces site-mixing variability and improves consistency of mortar quality across large projects. It is widely used in residential construction, renovation projects and cladding works.

• Brickwork & blockwork mortar
• External render
• Internal plaster bases
• Pointing mortar
• Stone masonry

Oil Well Cement is a specialty hydraulic cement specifically formulated for the casing and cementing of oil, gas and geothermal wells. It must remain pumpable under the extreme temperature and pressure conditions encountered at depth, then set rapidly and develop sufficient strength to provide zonal isolation of the wellbore. Under API 10A, OWC is classified in Classes A through H — with Classes G and H being the most widely used internationally due to their compatibility with a wide range of chemical retarder and accelerator systems.

Class G OWC is manufactured in Basic (B) and Moderate Sulfate Resistant (MSR) and High Sulfate Resistant (HSR) grades. It is designed for use from surface to 2,440 m (8,000 ft) depth with no additives, or up to 3,750 m (12,300 ft) with approved additives. Türkiye is an active producer and exporter of API Class G OWC.

• Oil & gas well casing cementing
• Geothermal well construction
• Plugging & abandonment operations
• Squeeze cementing

Calcium Aluminate Cement (also called high-alumina cement or aluminous cement) is produced by fusing or sintering limestone with bauxite. The dominant phases are calcium aluminates (CA, CA₂) rather than the calcium silicates of Portland cement. This gives CAC fundamentally different performance characteristics: very rapid strength gain (full structural strength typically achieved within 24 hours), outstanding resistance to high temperatures (refractories rated to 1,800°C+ with appropriate aggregates), and excellent resistance to weak acids and sulfate attack.

CAC is used in refractory concrete, industrial furnace linings, foundry applications, and where very rapid concrete strength is required for repair works or cold-weather pours.

• Refractory castables & precast shapes
• Industrial furnace linings
• Rapid-repair concrete
• Acid-resistant construction
• Sewage environments (H₂S attack)

Low Heat Portland Cement is manufactured by modifying clinker composition to reduce the proportion of the most exothermic hydration phases — tricalcium silicate (C₃S) and tricalcium aluminate (C₃A). This significantly reduces heat generation during hydration, preventing the internal temperature gradients that cause thermal cracking in mass concrete structures. It is typically specified for dam construction, large raft foundations, thick bridge pile caps and nuclear containment structures.

LHPC gains strength more slowly than OPC but achieves equivalent long-term strength. It is often combined with fly ash or GBFS additions for additional heat reduction.

• Dam construction
• Mass concrete foundations
• Thick pile caps & raft slabs
• Nuclear containment structures

Rapid-Hardening Portland Cement achieves high compressive strength within 24–48 hours through a higher proportion of C₃S and finer grinding than standard OPC. Its one-day strength is approximately equivalent to the three-day strength of OPC. This makes it invaluable for situations where early formwork removal is commercially critical, emergency repairs, cold-weather concreting (where slow strength gain is a risk), and precast concrete production with short cycle times.

• Precast manufacturing (short cycle)
• Emergency repairs
• Cold weather concreting
• Road repair & patching
• Early loading of structures