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Product introduction

     
The Company’s products include Portland cement clinker, general purpose Portland cement with different strengths, moderate and low heat Portland cement, slag powder, limestone powder, ash powder, and ready-mix concrete etc.

 

Different types of cement:

 

They are made by grinding Portland cement clinker with an appropriate amount of premium mixture (slag, fly-ash, limestone etc.) and an appropriate amount of gypsum.

 

 

Characteristics and applications of different types of cement

Name and code. of cement Grade Characteristics  Recommended Use 葡京赌场官网

Portland cement
P·Ⅱ
Ordinary Portland cement
P•O

52.5R
52.5
Fast setting and early strength, durability, workability, cold resistance, impermeability, corrosion resistance and adaptability to admixtures

Commonly used in construction of industrial and civil construction and civil engineering and can be formulated to produce concrete with different strengths and high performance concrete and prestressed high strength concrete or components (such as concrete pipe) of concrete products etc.

GB 175-2007《General Purpose Portland Cement》
Ordinary Portland cement
P·O
42.5R
42.5
Good early strength, durability, workability, cold resistance, impermeability, corrosion resistance and adaptability to admixtures
Portland slag cement
P·S·A

P·S·B
42.5
32.5
Good late stage strength, lower heat of hydration, heat resistance, durability, workability, impermeability, extremely high  corrosion resistance, high adaptability to admixtures Low heat of hydration, can be used in large scale concrete construction (e.g. dam); extremely high corrosion resistance, can be used in rivers and hydraulic construction and marine construction; heat resistance, can be used in buildings with high-heat workshop (such as steel rolling, heat treatment, casting, chimneys) 
Composite Portland cement
P·C
32.5R
32.5
Moderate strength, lower heat of hydration,  workability, heat resistance, good water retention, adhesion and moderate cold resistance

Use for general industrial and civil construction, building mortar, can also be used for masonry, stone tiles and porcelain tiles etc.

Moderate heat Portland cement
P·MH
42.5 High late stage strength, low alkali content, very low heat of hydration, durability, workability, impermeability, corrosion resistance and good water retention, and good adaptability to admixtures Suitable for large scale concrete construction e.g. hydroelectric dams, culverts, underwater and underground engineering; impermeable concrete, high performance concrete, especially good for projects which have stringent requirements for heat of hydration of cement. GB 200-2003《Medium/ Low heat Portland Cement, Low heat Portland slag cement》
Low heat Portland cement
P·LH
42.5 High late stage strength, low in alkali content, very low heat of hydration, durability, workability,  impermeability, corrosion resistance, good water retention, and good adaptability to admixtures

 

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National quality requirements for various types of cement

National quality requirements for general purpose Portland cement:

Quality Index LOI
(%)
SO3
(%)
IR
(%)
MgO
葡京赌场官网
Cl-
(%)
Specific Surface Area
(m2/kg)
Setting Time
(min)
Compressive Strength
(MPa)
Bending Strength
(MPa)
Fineness 
(45μm
Sifter %)
葡京赌场官网
Initial Final 3d 28d 3d 28d
PⅡ 52.5R ≤3.5 ≤3.5 ≤1.5 ≤5.0 ≤0.06 ≥300 ≥45 ≤390 ≥27.0 ≥52.5 ≥5.0 ≥7.0 - Qualified
PⅡ 52.5 ≥23.0 ≥4.0
PO 52.5R ≤5.0 - ≤600 ≥27.0 ≥5.0
PO 52.5 ≥23.0 ≥4.0
PO 42.5R ≥22.0 ≥42.5 ≥4.0 ≥6.5
PO 42.5 ≥17.0 ≥3.5
PSA 42.5 - ≤4.0 ≤6.0 - ≥15.0 ≥3.5 ≤30
PSB 32.5 ≥10.0 ≥32.5 ≥2.5 ≥5.5
PC 32.5R ≤3.5 ≥15.0 ≥3.5
PC 32.5 ≥10.0 ≥2.5
Remark When the customer requires low-alkali cement, the alkali content of Na2O equivalent weight shall be less than 0.60%.

 

National quality requirements for moderate heat Portland cement:

Quality Index LOI
(%)
SO3
(%)
MgO
(%)
Specific
Surface Area

(m2/kg)
Setting Time
(min)
Heat of Hydration
(kJ/kg)
Compressive Strength
(MPa)
Bending Strength
(MPa)
Soundness
Initial Final 3d 7d 葡京赌场官网 7d 28d 3d 7d 28d
PMH
42.5
≤3.0 ≤3.5 ≤5.0 ≥250 ≥60 ≤720 ≤251 ≤293 ≥12.0 ≥22.0 ≥42.5 ≥3.0 ≥4.5 ≥6.5 Qualified

 

National quality requirements for low heat Portland cement:

Quality Index LOI
(%)
SO3
(%)
MgO
(%)
Specific
Surface
Area

(m2/kg)
Setting Time
(min)
Heat of
Hydration

(kJ/kg)
Compressive
Strength

(MPa)
Bending
Strength

(MPa)
Soundness
nitial 葡京赌场官网 3d 7d 7d 28d 7d 葡京赌场官网
PLH 42.5 ≤3.0 ≤3.5 ≤5.0 ≥250 ≥60 ≤720 ≤230 ≤260 ≥13.0 ≥42.5 ≥3.5 ≥6.5 Qualified

 

葡京赌场官网