Cement
One of Tidots’s specialties is cement. Let’s get to know this product a bit more!
I. Identifications
The raw materials of the cement industry are limestone, gypsum, silica, iron ore, alluvium, marl soil, pozzolana, slag, mineral oxides, etc.
Generally, the Function of cement can be summarized in 3 cases:
- Sticking sand and coarse aggregates together
- Fill the space between sand and coarse aggregates
- The formation of a dense mass
Cement is a material which is applied to the surface of solid objects to hold them firmly together. To be more precise, cement is a powder which, after mixing with water, becomes soft and pasty (which hardens after drying) and is used for gluing stones, bricks, blocks, etc. in construction. Cement can be defined as an adhesive that is able to connect pieces of masses of solids together to form a compact mass.
II. Varieties of cement
Ordinary Portland Cement
Modified Portland Cement
Portland cement hardens quickly
Low heat Portland cement
Portland Cement Sulfate
III. Standards
Domestic Standards
| Title | Standard Number |
|---|---|
| Determining the properties of portland cement (part1) | 389 |
| Determining the softness of portland cement (part2) | 390 |
| Determining the expansion of portland cement (part3) | 391 |
| Determining the expansion of portland cement (part3) | 392 |
| Determination of compressive and flexural twist of portland cement (part 5) | 393 |
| Determination of portland cement hydration (part 6) | 394 |
| Chemical decomposition of cement measurement of the main elements of portland cement | 1692 |
| Chemical decomposition of cement measurement of portland cement by-products | 1693-1 |
International Standards
IV. HS code
| Tariff | Product name | CT | SUQ |
|---|---|---|---|
| - | Part five: Salt;Sulfur;soil and stone;lime and cement | - | - |
| 25 | Chapter twenty-five:Salt;Sulfur;Soil and stone;lime and cement | - | - |
| 2523 | Portland cement; aluminous cement; slag cement; supersulphate cement and similar hydraulic cements; whether or not colored or in the form of clinkers | - | - |
| - | Portland cement | - | - |
| 252321 | white portland cement; whether or not artificially colored | 5% | KG |
