ASSIGN INDIA CORPORATION
BUYING /SELLING / INDENTING / SOURCING / LIASONING / CO-ORDINATING
CEMENT
PORTLAND CEMENT & CLINKERS
CLINKERS and CEMENT
WE SUPPLY CEMENT FROM WORLD'S SECOND LARGES MANUFACTURER CEMEX HAVING FACTORIES IN MEXICO,UKRAINE,EGYPT,EUROPE
Please Note: These prices may be subject to change without notice so always please ask for prices and confirm this prices prior giving a quote to your buyers.This prices are for reference only.
Attention!
LOI / ICPO signed & seal with full Bank-Details Top 50 World Bank only on buyers letterhead
with softprobe-permission or BCL !
We not submit answer for Brokers emails & inquiries ! No chance for FCO !
possible- only for sign and seal the Draft- Contract.
Procedere:
1. LOI / ICPO with softprobe or BCL /TOP 50 World Bank
2. FCO sign Seller / Buyer
3. MFPA
4. Seller submit draft contract
5. Buyer sign draft contract – back to seller
6. Seller submit hardcopy to buyer (MFPA appendix signed from sellers bank)
7. Buyers bank open Akkreditiv – send to sellers bank / POF against POP and opening the PB (2%)
9. 5-6 weeks after signing of the hardcopys shipment commences (SGS /BOL Loading Doc. via DHL/TNT activated the Accreditiv)
SURVEY REPORT GB175-1999 P.O 42.5
|
Portland Cement GB175-1999 P.O 42.5 |
DATE: |
| |
|
ITEMS |
Examine data |
Mandatory Targets |
Standard |
|
MgO(%) |
2.58 |
Max5.0 |
GB/T 176-1999 |
|
SO3 (%) |
2.64 |
Max3.5 |
GB/T 176-1999 |
|
LOI(%) |
3.2 |
Max5.0 |
GB/T 176-1999 |
|
Fineness(80p m residue on sieve)(%) |
5.0 |
Max10.0 |
GB/T 1345-1991 |
|
Setting Time: Initial |
180 |
Min45 |
GB/T 1346-2001 |
|
Setting Time: Final |
240 |
Max600 |
GB/T 1346-2001 |
|
Soundness(pat test) |
0.1 |
Max0.5 |
GB/T 750 |
|
Strength (3 day):Bending Strength (Mpa) |
AV=5.6 |
Min3.5 |
GB/T 17671-1999 |
|
Strength (3 day):Compressive Strength(Mpa) |
AV=25.5 |
Min16.0 |
GB/T 17671-1999 |
|
Strength (28 day):Bending Strength (Mpa) |
AV=9.1 |
Min6.5 |
GB/T 17671-1999 |
|
Strength (28 day):Compressive Strength(Mpa) |
AV=48.1 |
Min42.5 |
GB/T 17671-1999 |
--
SURVEY REPORT GB175-1999 P.O 42.5 R
|
Portland Cement GB175-1999 P.O 42.5 R |
: |
| |
|
ITEMS |
Examine data |
Mandatory Targets |
Standard |
|
MgO(%) |
3.3 |
¡Ü5.0 |
GB/T 176-1999 |
|
SO3 (%) |
2.68 |
¡Ü3.5 |
GB/T 176-1999 |
|
LOI(%) |
3.8 |
¡Ü5.0 |
GB/T 176-1999 |
|
Fineness(80p m residue on sieve)(%) |
2.4 |
¡Ü10.0 |
GB/T 1345-1991 |
|
Setting Time: Initial (min) |
235 |
¡Ý45 |
GB/T 1346-2001 |
|
Setting Time: Final (min) |
330 |
¡Ü600 |
GB/T 1346-2001 |
|
Soundness(pat test) |
qualified |
qualified |
GB/T 750 |
|
Strength (3 day):Bending Strength (Mpa) |
4.7 |
¡Ý4.0 |
GB/T 17671-1999 |
|
Strength (3 day):Compressive Strength(Mpa) |
25.2 |
¡Ý21.0 |
GB/T 17671-1999 |
|
Strength (28 day):Bending Strength (Mpa) |
8.0 |
¡Ý6.5 |
GB/T 17671-1999 |
|
Strength (28 day):Compressive Strength(Mpa) |
49.6 |
¡Ý42.5 |
GB/T 17671-1999 |
-
Comment : Hanker Cement / clinker : Cement LAB Plt Sample Identity : Typical Date 2006-2-25 TYPE : 974 ASTM : I/II Lo Chemical Analysis: Control Range Typical CaO 63 ~ 66 63.58 SiO2 20.0 ~ 23.0 21.1 Al2O3 4.5 ~ 6.0 4.9 Fe2O3 3.1 ~ 6.0 3.3 MgO 1.0 ~ 5.0 2.32 SO3 1.9 ~ 3.0 2.49 Free Lime 0.5 ~ 1.5 1.02 LOI 1.0 ~ 3.0 1.18 Insol. 0.3 ~ 0.75 0.31 Na2O 0.08 ~ 0.18 0.1 K2O 0.34 ~ 0.63 0.45 Alk Equiv. 0.4 ~ 0.6 0.4 C3A 6.5 ~ 8.0 7.4 C3S 50 ~ 60 53.7 C2S 15.0 ~ 25.0 20 C4AF 9.5 ~ 12 10 Physical Specifications: On 325 Blaine 3600 ~ 3900 3710 Autoclave Initial Vicat-Min. 70 ~ 150 88 Final Vicat-Min. 110 ~ 240 115 Air Content 5 ~ 9 7.7 False Set ~ 100 91 1 Day-Psi 2050 ~ 2650 2565 3 Day-Psi 3700 ~ 4200 4165 7 Day-Psi 4600 ~ 5100 5090 28 Day-Psi 6300 ~ 6800 6750
--------ASTM TYPE I/II
Portland cement type PII42.5R Conforming to GB175-1999 equivalent to according to BS-12.
|
Chemical analysis |
Unit |
Control Range |
Typical |
|
SiO2 |
% |
20.0¡«23.0 |
22.1 |
|
Al2O3 |
% |
4.5¡«6.0 |
5.32 |
|
Fe2O3 |
% |
3.1¡«6.0 |
3.40 |
|
MgO |
% |
1.0¡«5.0 |
1.10 |
|
SO3 |
% |
1.9¡«3.0 |
2.15 |
|
C3A |
% |
7.5¡«9.5 |
8.65 |
|
C3S |
% |
50.0¡«60.0 |
54.60 |
|
C2S |
% |
15.0¡«25.0 |
22.20 |
|
F-CaO |
% |
0.5¡«1.5 |
1.10 |
|
Loss on lgnition(LOI) |
% |
1.0¡«3.0 |
0.80 |
|
Insoluble Residue |
% |
0.35¡«0.75 |
0.55 |
|
Equivalent alkalies |
% |
0.55¡«0.80 |
0.63 |
|
Physical analysis |
|
|
|
|
Blaine Fineness |
m2/kg |
300¡«380 |
360 |
|
Time of Set(Vicat) |
|
|
|
|
Initial Set |
min |
70-150 |
135 |
|
Final Set |
min |
130-300 |
210 |
|
Compressive Strength |
|
|
|
|
3Days |
Mpa |
22¡«31 |
27 |
|
28Days |
Mpa |
46¡«56 |
54 |
OPC 42.5R BS 12:1996
|
Phys Physical Properties |
BS 12:1996 |
|
|
|
Cement Standard |
RESULTS |
|
A 20N/mm2
¡¡52. 52.5N/mm2 ¡¡72. 72.5N/mm2 |
Compressive Strength (Mortar prism) At 2 days not less than 20N/mm2 At 7 days not specified At 28 days not less than 52.5N/mm2 and not higher than 72.5N/mm2 |
22.3N/mm2 42.0N/mm2 60.3N/mm2 |
|
|
Setting Time Initial setting time not less than 60 minutes. Final setting : not specified |
|
|
|
Soundness :Expansion not more than 10mm by ¡°Le Chatelier¡± Test |
1.0 mm |
|
|
Fineness (Specific surface: not specified) |
315©O/kg |
|
|
Standard Consistence (not specified) |
28.5% |
|
|
Specific Gravity (not specified) |
3.14 |
|
Che Chemical Composition |
|
|
|
Items |
REQUIREMENTS |
RESULTS |
|
L Loss on Ignition |
< 5.0 % |
2.0 % |
|
Insoluble Residue |
< 5.0 % |
0.5 % |
|
Silica (SiO2) |
|
21.0% |
|
Alumina (AI2O3) |
|
5.5% |
|
Ferric oxide (Fe2O3) |
|
3.0% |
|
Calcium Oxide(CaO) |
|
64.5% |
|
Magnesia (MgO) |
|
1.3% |
|
Sulphuric Anhydride (SO3) |
< 4.0 % |
2.5% |
|
Chloride (Cl) |
< 0.10 % |
0.01% |
|
Na2O |
|
0.15 |
|
K2O |
|
0.45 |
|
Acid Soluble Alkali as Na2O |
|
0.40% |
|
Lime Saturation Factor |
|
0.94% |
|
Free Lime (fCaO) |
|
0.0% |
|
Tricalcium Silicate (C3S) |
|
53.3% |
|
Dicalcium Silicate (C2S) |
|
18.7% |
|
Tricalcium Aluminate (C3A) |
|
8.7% |
|
Tetracalcium Alumino ino Ferrite (C4AF) |
|
10.0% |
| |||||
| Mark | Clinker | ||||
| Standard | British Standards GB175-1999 | ||||
| Origin | China | ||||
| Delivery | CIF ASWP | ||||
| Packing | Bulk or 50 Kg Bags | ||||
| Inspection | SGS or similar | ||||
| CLINKER: Chemical Composition | |||||
| SiO2 | 20-22.5％ | ||||
| Al2O3 | 4.6-7％ | ||||
| Fe2O3 | 3-5 ％ | ||||
| CaO | 64% min | ||||
| MgO | 4% max | ||||
| SO3 | 1% max | ||||
| Loss of Ignition | 1% max | ||||
| Insoluble Residue | 0.5% max | ||||
| f-CaO | 1.5% max | ||||
| Total Alkali | 0.9％ max | ||||
| C3S | 50-60％ | ||||
| C2S | 15-23％ | ||||
| C3A | 6-11％ | ||||
| C4AF | 7-15％ | ||||
| CLINKER: Physical and Mechanical Properties | |||||
| COMPRESSIVE STRENGTH | @ 03 DAY'S 28 MPa min | ||||
| @ 28 DAY'S 55 MPa min | |||||
| Payment for clinker |
| ||||
CLINKER SPECS
|
Item |
Typical data of Luhong |
Specification | |
|
SiO2 |
21.40% |
20~22.5£¥ | |
|
Al2O3 |
4.94% |
4.6~7£¥ | |
|
Fe2O3 |
3.45% |
3~5.0£¥ | |
|
CaO |
65.11% |
¡Ý64.0% | |
|
MgO |
3.5% |
¡Ü4.0% | |
|
SO3 |
0.73% |
¡Ü1% | |
|
Loss of Ignition |
0.49 |
¡Ü1% | |
|
Insoluble Residue |
0.3 |
¡Ü0.5% | |
|
f-CaO |
1.2% |
¡Ü1.5% | |
|
Total Alkali |
0.7% |
¡Ü0.90£¥ | |
|
C3S |
59.32% |
50.0~60.0£¥ | |
|
C2S |
20.31% |
15.0~23.0£¥ | |
|
C3A |
7.11% |
6~11£¥ | |
|
C4AF |
9% |
7~15.0£¥ | |
|
COMPRESSIVE STRENGTH |
3 DAYS
|
32 MPa
|
¡Ý 28 MPa
|
|
28 DAYS
|
58.2MPa
|
¡Ý 55 MPa
| |
Please contact with your inquiries at assignindia@gmail.com
CEMENT INTRODUCTION
INFORMATION ON CEMENT
TYPES OF PORTLAND CEMENT
Portland cement is a closely controlled chemical combination of calcium, silicon, aluminum, iron and small amounts of other compounds, to which gypsum is added in the final grinding process to regulate the setting time of the concrete. Some of the raw materials used to manufacture cement are limestone, shells, and chalk or marl, combined with shale, clay, slate or blast furnace slag, silica sand, and iron ore. Lime and silica make up approximately 85 percent of the mass.
The term "
Different types of Portland cement are manufactured to meet different physical and chemical requirements for specific purposes. The American Society for Testing and Materials (ASTM) Designation C 150 provides for eight (8) types of Portland cement:
Type I is a general purpose Portland cement suitable for all uses where the special properties of other types are not required. It is used where cement or concrete is not subject to specific exposures, such as sulphate attack from soil or water, or to an objectionable temperature rise due to heat generated by hydration. Its uses include pavements and sidewalks, reinforced concrete buildings, bridges, railway structures, tanks, reservoirs, culverts, sewers, water pipes and masonry units.
Type II Portland cement is used where precaution against moderate sulphate attack is important, as in drainage structures where sulphate concentrations in ground waters are higher than normal but not unusually severe. Type II cement will usually generate less heat at a slower rate than Type I. With this moderate heat of hydration (an optional requirement), Type II cement can be used in structures of considerable mass, such as large piers, heavy abutments, and heavy retaining walls. Its use will reduce temperature rise -- especially important when the concrete is placed in warm weather.
Type III is a high-early strength Portland cement that provides high strengths at an early period, usually a week or less. It is used when forms are to be removed as soon as possible, or when the structure must be put into service quickly. In cold weather, its use permits a reduction in the controlled curing period. Although richer mixtures of Type I cement can be used to gain high early strength, Type III, high-early-strength Portland cement, may provide it more satisfactorily and more economically.
Specifications for three types of air-entraining (carrying air particles along in its flow) portland cement (Types IA, IIA, and IIIA) are given in ASTM C 150. They correspond in composition to ASTM Types I, II, and III, respectively, except that small quantities of air-entraining materials are interground with the clinker during manufacture to produce minute, well-distributed and completely separated air bubbles. These cements produce concrete with improved resistance to freeze-thaw action.
Type IV is a low heat of hydration cement for use where the rate and amount of heat generated must be minimized. It develops strength at a slower rate than Type I cement. Type IV
TYPE V :
Type V is a sulphate-resisting cement used only in concrete exposed to severe sulphate action -- principally where soils or ground waters have a high sulphate content. Low Tricalcium Aluminate (C3A) content, generally 5% or less, is required when high sulphate resistance is needed.
NOTE: For concrete pipe and precast box manufacturing, Type I or II cements are generally used.
GREY PORTLAND CEMENT FOR CONSTRUCTION GRADE 42.5
ACCORDING TO BRITISH STANDARDS 12/1996 OR ASTM C-150
CHEMICAL COMPOSITION
SILICON DIOXIDE (SIO2) 21.00
ALUMINIUM OXIDE (A12O3) 5.30
FERRIC OXIDE (FE2O3) 3.30
CALCIUM OXIDE (CAO) 65.60
MAGNESIUM OXIDE (MGO) 1.10
SULPHUR TRIOXIDE (SO3) 2.70
LOSS OF IGNITION (LOI) 0.90
TRICALCIUM SILICATE (C3S) 60.00
DICALCIUM SILICATE (C2S) 15.00
TRICALCIUM ALUMINATE (C3A) 8.05
TRICALCIUM ALUMINO FERRICE (C4AF) 9.76
PHYSICAL AND MECHANICAL PROPERTIES
BLAIN CM2/GR 3.250
AUTOCLAVE EXPANTION 0.02
INITIAL SETTING TIME (VICAT) 105 MINUTES
FINAL SETTING TIME (VICAT) 135 MINUTES
COMPRESSIVE STRENGTH @ 03 DAYS 230 KG/CM2 AND @ 07 DAYS 305 KG/CM2 AND @ 28 DAYS 420 KG/CM2
Origin of cement is usually :
Types of Cement
Types of Portland Cement
Type I and
General purpose cements suitable for all uses where the special properties of other types are not required.
Type II and Type IIA*
Type II cements contain no more than 8% tricalcium aluminate (C3A) for moderate sulfate resistance. Some Type II cements meet the moderate heat of hydration option of ASTM C 150.
Type III and Type IIIA*
Chemically and physically similar to Type I cements except they are ground finer to produce higher early strengths.
Type IV
Used in massive concrete structures where the rate and amount of heat generated from hydration must be minimized. It develops strength slower than other cement types.
Type V
Contains no more than 5% C3A for high sulfate resistance.
Note: *Air-entraining cements
Types of Blended Cements
Blended hydraulic cements are produced by intimately and uniformly intergrinding or blending two or more types of fine materials. The primary materials are portland cement, ground granulated blast furnace slag, fly ash, silica fume, calcined clay, other pozzolans, hydrated lime, and pre-blended combinations of these materials.
ASTM C 595, Specification for Blended Hydraulic Cements, recognizes five primary classes of blended cement:
Type I S - Portland blast furnace slag cement
Type IP and Type P - Portland-pozzolan cement
Type I (PM) - Pozzolan-modified portland cement
Type S - Slag cement
Type I (SM) - Slag-modified portland cement
Types of Hydraulic Cements
All
Type GU - general use
Type HE - high early strength
Type MS - moderate sulfate resistance
Type HS - high sulfate resistance
Type MH - moderate heat of hydration
Type LH - low heat of hydration
White Portland Cement
In addition to the eight types of portland cement, a number of special purpose hydraulic cements are manufactured. Among these is white portland cement. White portland cement is identical to grey portland cement except in colour. During the manufacturing process, manufacturers select raw materials that contain only negligible amounts of iron and magnesium oxides, the substances that give grey cement its colour. White cement is used whenever architectural considerations specify white or coloured concrete or mortar.