Long Son Portland cement (PC cement) is manufactured under the American Standard ASTM C 150 – Type I served the purpose of export to foreign markets. Portland cement is produced by grinding clinker and a certain amount of gypsum to ensure the setting time.
Long Son PC cement uses raw materials of an area which is evaluated as the best material area in Vietnam combined with Japanese technologyunder the management of experienced specialists. The ratio of Portland cement components is ensured to be appropriate with diverse construction requirements of customers. Major components are Portland clinker with the proportion of 95-96% and gypsum with the proportion of 4-5%.
Portland cement can be used for many work items or used to manufacture concrete for construction of bridges, culverts, prestressed concrete, hydroelectric dams and buildings.
Advantages of Long Son Portland cement:
– High initial strength growth rate helps remove the formwork soon.
– High stability, good antileakage capacity and no corrosion by the environment
– Cement can use water-reducing additive, so it’s very easy to use and control the quality of concrete in special buildings.
|Characteristic||Units||Ceriteria conform with
ASTM C150 Type I
|SiO2||%||Max 22.5||5.31||ASTM C114-09|
|Loss on Lgnition, (LOI)||%||Max 1.5||0.75|
|Free lime (F.CaO)||%||Max 1.5||1.0|
|Insoluble Residue||%||Max 0.75||0.42|
|Total alkalies (Na2O+0.658K2O)||%||Max 0.6||0.53|
|C3S||%||Min 55.0||63.18||ASTM C150-11
|Lime Saturation Factor – LSF||%||Min 92||95.15|
|Moisture||%||Max 1.0||0.01||Refer ASTM C136|
|Particle Size: – Below 1mm||%||Max 10.0||7.82||Sieve|
|– Above 30 mm||%||Max 10.0||6.50|