Product Name: Portland cement clinker conforming to ASTM C150 Type I
Origin: Viet Nam
Min. Order Quantity: 5000mt
FOB/CNF Price: Be advised
Loading Port: Viet Nam
Production Capacity: 40,000 Tons
Packaging Details: In bulk
Delivery Time:
Within 15 days after open L/C
Grey Portland cement clinker conforming to Vietnam standards TCVN 7024: 2002, suitable for producing Ordinary Portland Cement conforming to ASTM C 150 Type 1
NoItemsUnitSpecification
1. Compressive strength(Mpa)
* After 3 daysN/nm2> 25
* After 28 daysN/nm2> 50
2. Particle size
* <1mm%< 10
* 5mm - 25mm%> 50
3. Moisture%< 1
4. CaO%58-67
5. SiO2%18-26
6. Al2O3%3-8
7. Fe2O3%2-5
8. MgO%< 5
9. Free Lime%< 1.5
10. Insoluble residue%< 0.75
11. Loss on ignition (LOI)%< 1
12. Color Grey, dark grey.
Description:
Our Cement Clinker (EN 197-1 CEM 1 52.5 N) is engineered for high-performance cement production, adhering to international standards. This clinker is characterized by its optimized chemical and mineral composition, ensuring superior strength, workability, and durability in cement formulations. It is ideal for producing Ordinary Portland Cement with high early strength, making it suitable for demanding construction projects.
Clinker consists of various calcium silicates including alite and belite. Tricalcium aluminate and calcium aluminoferrite are other common components. These components are often generated in situ by heating various clays and limestone.
Portland cement clinker is made by heating a homogeneous mixture of raw materials in a rotary kiln at high temperature. The products of the chemical reaction aggregate together at their sintering temperature, about 1,450 C (2,640 F). Aluminum oxide and iron oxide are present only as a flux to reduce the sintering temperature and contribute little to the cement strength. For special cements, such as low heat (LH) and sulfate resistant (SR) types, it is necessary to limit the amount of tricalcium aluminate formed.
The major raw material for the clinker-making is usually limestone mixed with a second material containing clay as source of alumino-silicate. Normally, an impure limestone which contains clay or silicon dioxide (SiO2) is used.
The calcium carbonate (CaCO3) content of these limestones can be as low as 80%. Second raw materials (materials in the rawmix other than limestone) depend on the purity of the limestone. Some of the second raw materials used are: clay, shale, sand, iron ore, bauxite, fly ash and slag. The clinker surface and its reactions in different electrolytic solutions are investigated by scanning electron microscope and atomic force microscopy.
Portland cement clinker is ground to a fine powder and used as the binder in many cement products. A little gypsum is sometimes added. It may also be combined with other active ingredients or chemical admixtures to produce other types of cement including: ground granulated blast furnace slag cement.
Crown Portland Composite Cement is CEM-II/A-M which is a cement consisting of Clinker, Gypsum, Pulverized Fuel Ash (PFA), Blast Furnance Slag and Limestone designated by the specifications of BDS EN 197-1: 2003; CEM -II/A-M (V-S-L), 42.5 N. PCC is the most suitable cement for constructions in Bangladesh. CEM â?? II /A-M contains 80-94% Clinker, which is substantially higher than CEM â?? II/B-M containing 65 â?? 79% Clinker that provide us extra advantage in strength development and increase concrete performance.
Both slag & fly ash (PFA) are used in PCC. Percentage of SiO2 in PFA is higher than slag which is advantageous to gain more long-term strength and ensure durable concrete. This type of cement is used for large constructions all around the world and it has been used during the last few decades.
The hydration process of normal cement produces Calcium Silicate Hydrate CHS & Calcium Hydroxide Ca(OH)2. Calcium Hydroxide Ca(OH)2 does not contribute to gain strength and it is the weak part of reaction which is not suitable for concrete. Since PFA contains higher portion of reactive silica and slag contains alumina, it helps to convert Ca(OH)2 into CSH to gain further strength.
We are cement manufacture from Indonesia. We produces cement and clinker.
Clinker is a semi-finished material to make cement, if it is ground with gypsum and other minerals may be added.
Clinker forms in the form of lumps or nodules with a general size of 3 millimeters (0.12 in) to 25 millimeters (0.98 in) in diameter.
Specification : Clinker to manufacture cement as per EN 197-1 2011 strength class 42.5 N & ASTM (Attached)
Packing : Bulk
FOB : USD 49.00 / MT
Payment : 20% advance via TT and 80% irrevocable, unrestricted & confirmed Letter of Credit payable at sight in favor of the Seller from a first class international bank.
Quantity : 55,000 MT +/- 10% X 12 Months
Laycan : July 2022.
Loading Rate : 10,000 MT PWWD SHINC excluding super holidays
Vessel : Vessel should be Geared and with Grab of 10~12 CBM in case of ungeared vessel shore cranes and Grab will be use and the charges shall be borne by the buyer as per actual.
NOR : NOR to be tender by the master at load port after registering the vessel with the relevant port authority on working day during the office hours i.e. between 0900 hrs to 1700 hrs from Monday to Friday and B/w 0900 HRS to 1200 HRS on Saturday.
Laytime : Time to count after berthing of vessel.
Validity : Offer validity, 7 days from the date of this letter
