Cement: Characteristics
Why strength at 28 days matters more than purity
What this tab covers The supply and physical characteristics of the commodity. Supply: current production, inventories and stocks, capacity utilisation, geographic and producer concentration, how fast supply responds to price, the project pipeline and capital spending, and logistics and export flows. Material: the physical and chemical properties that set its grade, price and end uses (for example purity and conductivity for metals, API gravity, sulfur and energy content for fuels, moisture, protein and fibre quality for crops).Supply volume characteristics
| Characteristic | Figure | What it means | Source |
|---|---|---|---|
| Current production volume | about 3.8 billion t of cement (2025e), down from 3.9 billion t (2024) | China made about 1.7 billion t (45%) and India 470 Mt (12%). Chinese output in 2025 was the lowest since 2010. | USGS MCS 2026, Cement; SunSirs 2026 |
| Inventory and stock levels | US yearend cement stocks 8.2 Mt (2025e), about 27 days of US consumption | Cement cannot be stored for long because it absorbs moisture and starts to hydrate, so stocks are working stocks in plant silos and terminals. US stocks were 9.7 Mt at end 2024 against apparent consumption of 110 Mt a year. No global stock figure is published. There are no exchange or strategic stocks. | USGS MCS 2026, Cement (salient statistics); days derived as 8.2/110 x 365 |
| Capacity utilisation | India about 70% (FY2024) and 71% (FY2025 forecast); US clinker about 69% (2025); China clinker roughly 60% (derived) | India's rate is from ICRA. The US figure is 69 Mt of clinker produced against 100 Mt of capacity. China's is derived from 1,700 Mt of cement at a clinker ratio of about 0.65 against 1,800 Mt of clinker capacity. The world average works out at about 76% on the same method (3.8 Gt of cement x 0.76 clinker ratio against 3.8 Gt of clinker capacity), indicative only. | ICRA via Indian Cement Review, Dec 2024; USGS MCS 2026; clinker ratios from Columbia CKI 'Decarbonizing Cement', 2026 |
| Geographic and producer concentration | China 45%; top-3 countries (China, India, Vietnam) about 60%; HHI about 2,200 (listed countries); largest firm Anhui Conch about 7% of world output | Country concentration is high only because China is so large; the market itself is regional. Anhui Conch sold 271 Mt of cement and clinker in 2024 and UltraTech 136 Mt in FY2025, about 7% and 3.6% of world output. A top-5 company share is not published; CNBM, Holcim and Heidelberg Materials do not disclose comparable volumes. | USGS MCS 2026 (HHI computed from the country table, excluding the 860 Mt 'other countries' group); CemNet 2025; UltraTech FY2025 |
| Supply elasticity | short run high where kilns are idle; long run slow, since a kiln takes years to permit and build | With Indian utilisation near 70% and Chinese near 60%, output can rise quickly without new kilns. Grinding units near markets can be added faster than kilns, as Shree Cement did with 3.0 and 3.4 Mt units in FY2025. New clinker needs a limestone lease, environmental clearance and a long build, so long-run supply responds slowly to price. | ICRA via Indian Cement Review, 2024; Conway, Material World (2023); Shree Cement FY2025 |
| Project pipeline and CapEx | India adding 70-75 Mt in FY2025-FY2026, of which 33-37 Mt is clinker; Ambuja/ACC targeting 118 Mt a year by end FY2026 | ICRA expects 33-35 Mt in FY2025 and 37-39 Mt in FY2026, with 38-40 Mt in the east and south. Consolidation adds capacity by acquisition too: UltraTech bought India Cements and Kesoram, and Adani's Ambuja/ACC passed 100 Mt after buying Orient and Penna. India's industry capacity was about 655 Mt at end FY2025. In the US a Swiss producer opened a grinding plant in Texas in 2025 and a slag-cement grinding plant began construction in Indiana. CapEx per tonne is not published in the sources used. | ICRA via Indian Cement Review, Dec 2024; USGS MCS 2026; company results via Business Standard 2025 |
| Logistics and export flows | about 94 Mt (2.4% of output) crossed borders in 2024; world trade about $10 billion | Turkey (12.0% of export value), Egypt (9.1%) and Germany (6.7%) lead exports; the US takes 24.1% of import value and imported 23 Mt of cement and 0.66 Mt of clinker in 2025, mainly from Turkey, Canada, Vietnam and Greece. Concrete is usually made about 50 km from the site. Road haul costs and emits about 25 times more per t-km than a large bulk ship, so coastal terminals and grinding units decide who can compete. | UN Comtrade 2024; USGS MCS 2026; Columbia CKI 2026; ERM for The Crown Estate, 2010 |
Material characteristics Industrial mineral
Cement is sold on performance, not purity. Buyers care about how strong concrete gets at 28 days, how fast it sets, how finely it is ground and how much clinker it contains. Grades are set by national standards such as IS 269 in India and ASTM C150 in the US. Blended cements swap clinker for fly ash, slag or limestone, which changes strength gain and carbon content.
| Property | Value / specification | Why it matters | Source |
|---|---|---|---|
| Strength grade | OPC 33, 43 and 53: minimum 28-day compressive strength of 33, 43 and 53 MPa | Sets which structural uses the bag can go into and its price; 53 grade sells at a premium for high-rise and precast work | BIS IS 269:2015 |
| Clinker content / blend | OPC about 95% clinker plus gypsum; PPC 15-35% fly ash; PSC 25-70% slag; global average clinker ratio 0.76 | Clinker drives cost and CO2; blending cuts both but slows early strength | IS 269, IS 1489-1, IS 455 (BIS); Columbia CKI 2026 |
| Fineness | at least 225 m2/kg Blaine for OPC (IS 269); at least 260 m2/kg (ASTM C150) | Finer grinding speeds strength gain but uses more mill electricity | BIS IS 269:2015; ASTM C150 |
| Setting time | initial not less than 30 minutes, final not more than 600 minutes | Workers need time to place concrete before it stiffens | BIS IS 269:2015 |
| Clinker chemistry | mainly alite (C3S) and belite (C2S) from about 65% CaO; MgO limited to 6% | Alite gives early strength; excess MgO and free lime cause expansion and cracking | ASTM C150; IS 269 (indicative composition) |
| Soundness | Le Chatelier expansion not more than 10 mm | Guards against delayed expansion that cracks structures | BIS IS 269:2015 |