- Subsidiaries
- Integrated Cement Plants
- Jiangxi Ya Dong Cement Co., Ltd. Sichuan Ya Dong Cement Co., Ltd. Hubei Ya Dong Cement Co., Ltd. Huanggang Ya Dong Cement Co., Ltd. Wuhan Ya Xin Cement Co., Ltd.
- Cement Grinding Plants
- Nanchang Ya Dong Cement Co., Ltd. Yangzhou Ya Dong Cement Co., Ltd. Wuhan Ya Dong Cement Co., Ltd.
- Ready-mixed Concrete Co.,
- Shanghai Ya Li Ready-mixed Concrete Co., Ltd. Shanghai Ya Fu Ready-mixed Concrete Co., Ltd. Nanchang Ya Li Ready-mixed Conrete co., Ltd. Sichuan Ya Li Ready-mixed Concrete Co., Ltd. Wuhan Ya Li Ready-mixed Concrete Co., Ltd. Chengdu Ya Li Ready-mixed Concrete Co., Ltd.
- Transportation Companies
- Jiangxi Ya Li Transportation Co., Ltd. Hubei Ya Li Transportation Co., Ltd. Sichuan Ya Li Transportation Co., Ltd.
- Investment Company
- Ya Dong Holding Co., Ltd.
- Links
Product and Service
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 | Standard Application |
|
Portland cement |
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 |
National quality requirements for various types of cement
National quality requirements for general purpose Portland cement:
| Quality Index | LOI （%） |
SO3 （%） |
IR （%） |
MgO (%) |
Cl- (%) |
Specific Surface Area （m2/kg） |
Setting Time （min） |
Compressive Strength （MPa） |
Bending Strength （MPa） |
Fineness (45μm Sifter %) |
Soundness | |||
| 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 | 3d | 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 | Final | 3d | 7d | 7d | 28d | 7d | 28d | ||||||
| PLH 42.5 | ≤3.0 | ≤3.5 | ≤5.0 | ≥250 | ≥60 | ≤720 | ≤230 | ≤260 | ≥13.0 | ≥42.5 | ≥3.5 | ≥6.5 | Qualified |
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