Portland Cement
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- Execution standards：GB175-2007, GB/T 3183-2017
| Ordinary Portland Cement （P·O 52.5） | |||||||||
| Burn loss | Sulfur trioxide SO₃ | Chloride ion CL ̄ | magnesium oxide | 3-day compressive strength | 28 days compressive strength | 3-day flexural strength | 28 days of flexural strength | Initial condensation time | Final condensation time |
| ≤5.0% | ≤3.5% | ≤0.06% | ≤5.0% | ≥23.0 | ≥52.5 | ≥4.0 | ≥7.0 | ≥45minutes | ≤600minutes |
Features:
High intensity in the initial phase
High heat of hydration
High cold tolerance
Low heat resistance
Low corrosion resistance
Low dry shrinkage
Application:
Large-scale construction projects with special requirements: such as bridges, highways, high-rise buildings and high-performance concrete， etc.
| Ordinary Portland Cement (P· O 42.5） | |||||||||
| Burn loss | Sulfur trioxide SO₃ | Chloride ion CL ̄ | magnesium oxide | 3-day compressive strength | 28 days compressive strength | 3-day flexural strength | 28 days of flexural strength | Initial condensation time | Final condensation time |
| ≤5.0% | ≤3.5% | ≤0.06% | ≤5.0% | ≥17.0 | ≥42.5 | ≥3.5 | ≥6.5 | ≥45minutes | ≤600minutes |
Features:
High intensity in the initial phase
High heat of hydration
High cold tolerance
Low heat resistance
Low corrosion resistance
Low dry shrinkage
Application:
Large-scale construction projects with special requirements: such as bridges, highways, high-rise buildings and high-performance concrete， etc.
| Low alkali ordinary Portland cement (P· O 42.5） | |||||||||
| Burn loss | Sulfur trioxide SO₃ | Chloride ion CL ̄ | magnesium oxide | 3-day compressive strength | 28 days compressive strength | 3-day flexural strength | 28 days of flexural strength | Initial condensation time | Final condensation time |
| ≤5.0% | ≤3.5% | ≤0.06% | ≤5.0% | ≥15.0 | ≥42.5 | ≥3.5 | ≥6.5 | ≥45minutes | ≤600minutes |
Features:
High intensity in the initial phase
High heat of hydration
High cold tolerance
Low heat resistance
Low corrosion resistance
Low dry shrinkage low alkali content
Application:
Large-scale construction projects with special requirements: such as bridges, highways, high-rise buildings and high-performance concrete， etc.
| Composite Portland cement (P· C 42.5） | |||||||||
| Burn loss | Sulfur trioxide SO₃ | Chloride ion CL ̄ | magnesium oxide | 3-day compressive strength | 28 days compressive strength | 3-day flexural strength | 28 days of flexural strength | Initial condensation time | Final condensation time |
| —— | ≤3.5% | ≤0.06% | ≤6.0% | ≥15.0 | ≥42.5 | ≥3.5 | ≥6.5 | ≥45minutes | ≤600minutes |
Features:
High intensity in the initial phase
Low heat of hydration
High cold tolerance
High heat resistance
Low corrosion resistance
Low dry shrinkage
Application:
Large-scale construction projects with special requirements: such as bridges, highways, high-rise buildings and high-performance concrete， etc.
| Slag Portland Cement (P· S 32.5 ） | |||||||||
| Burn loss | Sulfur trioxide SO₃ | Chloride ion CL ̄ | magnesium oxide | 3-day compressive strength | 28 days compressive strength | 3-day flexural strength | 28 days of flexural strength | Initial condensation time | Final condensation time |
| —— | ≤3.5% | ≤0.06% | ≤6.0% | ≥10.0 | ≥32.5 | ≥2.5 | ≥5.5 | ≥45minutes | ≤600minutes |
Features:
Low initial intensity
High heat resistance
High resistance to sulfuric acid corrosion
The use of fly ash and coal gangue as composite raw materials has been recognized as green building materials and enjoys preferential tax treatment
Stable strength in the initial and later stages
Low hydration heat
Application:
Construction projects with special requirements, concrete and plastering mortar, etc.
| Fly ash Portland cement (P· F 32.5 ） | |||||||||
| Burn loss | Sulfur trioxide SO₃ | Chloride ion CL ̄ | magnesium oxide | 3-day compressive strength | 28 days compressive strength | 3-day flexural strength | 28 days of flexural strength | Initial condensation time | Final condensation time |
| —— | ≤3.5% | ≤0.06% | ≤6.0% | ≥10.0 | ≥32.5 | ≥2.5 | ≥5.5 | ≥45minutes | ≤600minutes |
Features:
Low initial intensity
High heat resistance
High resistance to sulfuric acid corrosion
The use of fly ash and coal gangue as composite raw materials has been recognized as green building materials and enjoys preferential tax treatment
Stable strength in the initial and later stages
Low hydration heat
Application:
Construction projects with special requirements, concrete and plastering mortar, etc.
| Masonry cement (M 32.5) | |||||||||
| Burn loss | Sulfur trioxide SO₃ | Chloride ion CL ̄ | magnesium oxide | 3-day compressive strength | 28 days compressive strength | 3-day flexural strength | 28 days of flexural strength | Initial condensation time | Final condensation time |
| —— | ≤3.5% | ≤0.06% | —— | ≥10.0 | ≥32.5 | ≥2.5 | ≥5.5 | ≥60minutes | ≤720minutes |
Features:
Low initial intensity
High heat resistance
High resistance to sulfuric acid corrosion
The use of fly ash and coal gangue as composite raw materials has been recognized as green building materials and enjoys preferential tax treatment
Stable strength in the initial and later stages
Low hydration heat
Application:
Construction projects with special requirements, concrete and plastering mortar, etc.