High Quality White Cement

Product Overview

Description

I. BRIEF INTRODUCTION:

 

 

 

Our company is specializing in building materials export with main focus on cement. We had made capital contribution to some of cement factories here in Thailand and built long term business relation, thus our services and price are extremely competitive with high quality standard.

 

 

 

We had exported cement of all kinds from 32.5 - 42.5 - 52.5. We do know that your esteemed company is a big company and you are looking for long term partnership for cement supply. We had export our cements (in bulk, in 40 kilo, 50 kilo and jumbo bag, container etc., ) directly or via oversea partners

 

 

 

We hope to have chance to cooperate with you and your esteemed company in supplying cement and other building materials to oversea markets for our mutual benefits.

 

 

 

 

 

III. SPECIFICATIONS FOR ORIDINARY PORTLAND CEMENT AS PER EN 197-1:2011/CEM I 42.5

 

 

 

 

 

1)Grade: WHITE CEMENT 42.5

 

(2)Chemical analysis:

 

CHINA STANDARD GB2015-91 P. W42.5
Items/ Indexes		National Standard
Cement MgO (%)		4.5 MAX
Cement SO 3 (%)		3.5 MAX
Cement loss on ignition (%)		5.0 MAX
Cement fineness (%)		10.0 MAX
Setting time (min)		45 MIN
Final setting time		600 MAX
Bright white		80% MIN
Strength(MPa)	3-day compressive strength	24.0 MIN
	3-day bending strength	4 MIN
	28-day bending strength	6.5 MIN
	28-day bending strength	42.5 MIN

 

 

 

 

 

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

 

 

 

Cement is the most-widely used construction raw material in the world. Clay, limestone, and marl are the most important raw materials for producing it. When mixed with water, its main role is serving as an adhesive to bind hard rock, sand, and gravel in concrete.

 

 

 

different types our products:

Ordinary Portland Cement

 

Moderate Sulfate Resistance Cement

 

High Early Strength Cement

 

Low Heat Hydration Cement

 

High Sulfate Resistance Cement

 

Portland Pozzolana Cement (PPC)

 

White Portland Cement

 

Portland Cement Type 1 (Ordinary Portland Cement) (OPC):

This grade can be applied for general uses that don’t require any specific properties. They use it for side-walks, tanks, pavements, pipes, floors, bridges, etc. Ordinary Portland is manufactured in three strength levels of 1-325, 1-425, and 1-525. Grades with high resistance (1-425) and (1-525) release more heat during hydration.

Portland Cement Type 2 (Moderate Sulfate Resistance Cement):

This type has moderate resistance against sulfates attacks. Type 2 takes more time than type 1 for hardening, and produces less heat. They use type 2 can for bulk concreting as it produces less heat, and the concreting volume won’t be limited. They can use it for soil and groundwater that have moderate sulfate ions, and also warm weather.

Portland Cement Type 3 (High Early Strength Cement):

Type 3 is almost like type 1 in case of raw materials and ingredients. The difference is that it is more milled, and it gets hardened faster. Type 3 usually gets hardened in one week or less, and its 7-day resistance is almost same as 28-day resistance of type 1. It produces more heat when hardening. It is suitable for quick setting and where formwork needs to be removed. Type 3 is also appropriate for application in cold weather.

Portland Cement Type 4 (Low Heat Hydration Cement):

This grade releases less heat during hydration. Where the heat level matters, this grade has huge consumption. The resistance growth of concretes produced with type 4 is slower. The main application of type 4 is for bulk concrete construction such as dams. They use Cement type 4 in bulk for new concrete control in hot weather above 40C.

Portland Cement Type 5 (High Sulfate Resistant Cement):

Type 5 is almost same as type 2. The only difference is that it has higher resistance against sulfate ions attacks. If the soil or the groundwater includes high amounts sulfate ions, type 5 will be used. Type 5 gets hardened slower than other types, and the 3, 7, and 28 day resistance level of this grade is lower compared to other grades, therefore it is used limited for the structure that require high resistance.

Portland Pozzolana Cement (PPC):

Pozzolana is a natural material containing silica. Portland pozzolana consists maximum 15% pozzolana materials. They use Portland pozzolana mainly for general purposes such as making concrete. Low heat during hydration, reducing concrete penetrability, and causing high resistance in rich corrosive materials places are the main reasons that Portland pozzolana is in high demand. It is highly used in hot weather, and in the places including sulfate and chlorine ions.

White Portland Cement (White Cement):

White Portland cement is almost like type 1. The main difference is in color. It is produced by reducing the percentage of metal oxides, primarily iron and manganese. It also requires more ingredients such as pigments in order to produce white color. Therefore, it is more complex and expensive. They use white Portland mainly for facing panels, terrazzo surface, mortar, curtain walls and colored concrete.