25 kg bag portland cement

Product Overview

Description

Portland cement

Portland cement, binding material in the form of a finely ground powder, usually gray, that is manufactured by burning and grinding a mixture of limestone and clay or limestone and shale. The inventor Joseph Aspdin, of England, patented the basic process in 1824, naming it for the resemblance of the cement when set to portland stone, a limestone from the Isle of Portland. When mixed with water, the anhydrous calcium silicates and other constituents in the portland cement react chemically with the water, combining with it (hydration) and decomposing in it (hydrolysis) and hardening and developing strength. 

Portland cement is the most common type of cement in general use around the world, used as a basic ingredient of concrete, mortar, stucco, and most non-specialty grout.
It is a fine powder produced by heating materials in a kiln to form what is called clinker, grinding the clinker, and adding small amounts of other materials. Several types of Portland cement are available with the most common being called ordinary Portland cement (OPC) which is grey in color, but a white Portland cement is also available.

 

 

 II. CEMENT STANDARD

 1.Vietnam standard (TCVN)

- Quality of Cement as per TCVN 6260 - 2009

2. European standards (EN)

- Certificate I -EN 197-1.2000- CEM II 42,5 R

- Certificate II - En 197-1.2000 CEM II 42,5N

- Certificate III - EN 197-1.2000 CEM I 42,5R

 3. American standards (ASTM)

- ASTM C150 TYPE-1

- ASTM C1157 TYPE- GU

- ASTM C1157 TYPE- HE

AMERICIAN SOCIETY FOR TESTING MATERIALS
Items	CHARACTERISTICS	Units	SPECIFICATION LIMIT	TEST RESULT	TEST METHODS
			ASTM C150-TYPE I
1	SiO2	%	22 max	20.26	ASTMC114
2	Al2O3	%	-	5.16
3	Fe2O3	%	-	3.18
4	CaO	%	60 min	63.28
5	MgO	%	6 max	1.05
6	SO3	%	3 max	2.55
7	Loss on Ignition, (LOI)	%	3 max	2.71
8	Insoluble Residue	%	0.75 max	0.69
9	Chloride conten	%	A	-
10	Total Alkali Na2Ot®= Na2O + 0.658 K2O	%	0.75 max	0.55
11	C3S	%	A		BY CALCULATED
12	C2S	%	A
13	C3A	%	A
14	C4AF	%	A
15	Specific surface or Blaine	cm2/g	3200 min	3537	ASTM C204
16	Retained content on sieve 45mm	%	A		ASTM C430
17	Setting time
18	- Initial Setting Time	Minute	45 min	125	ASTMC191
19	- Final Setting Time	Minute	375 max	185
20	Heat of hydration:
21	7 Days	KJ/kg	A		ASTM C 186
22	28 Days	KJ/kg	A		ASTM C 186
23	Mass density	g/cm	A		ASTM C 188
24	Sulfate resistance, 14 days expansion	%	A		ASTM C 452
25	Air content of mortar	%	≤ 12.0		ASTM C 185
26	Autoclave expansion	%	< 0.80		ASTM C 151
27	Compressive strength
28	- 3 days	MPa	12 min	16.8	ASTMC109
29	- 7 days		19 min	25.3
30	- 28 days		28 min	37.2
31	Fineness
32	Retained content on sieve 0.09mm	%	3 max	0.12	ASTM C430
33	Chloride content	%	0.1 max	0.04	ASTMC114
34	CaO free	%	1.5 max	0.65	ASTMC114
	A: No applicable,
	C3S = (4.071x%CaO)-(7.60x%SiO2)-(6.718x%Al2O3)-(1.43x%Fe2O3),
	C2S=(2.867) x % SiO2- (0.7544 x % C3S),
	C3A =(2.650x% Al2O3)-(1.692x% Fe2O3), C4AF = 3.043 x % Fe2O3

 

 

 

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Preparing for long term cooperation, credible and reliable supplier 

Offering consultant for related products, variable products for different choice

Givering best price, high quality , fast delivery

Respond quickly,  professional team, optimizing the packing , loading and shipping of products

 

FAQ

- What is payment ?

Usualy, we accept  irrevocable L/C at sight for payment. If customer prefers T/T, that is 30% deposit TT in advance, 70% TT after the copy of B/L. 30days, 60days and 90days deferred L/C is also acceptable, the deferred L/C should be confirmed by first bank class

 - What is guarantee term  on the quality of the product?

We can offer the third party inspection certificate issued by world famous agencies such as  SGS,  after they checked at the loading port. factory plant also issues report according to European Standard like EN197-2000,USA Standard ASTMC-150....

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Pls contact me freely if you want to know more details about our products and company.

 

ADAVINA IMPORT EXPORT COMPANY LIMITED

Add: Nam Hoa village, An Hung commune, An Duong districts, Hai Phong
Mobile: +84 942.076.856
Phone/Viber/Whatsapp/Skype:: +84 942.076.856