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Tasek Buaya Ordinary Portland Cement (OPC) 50KG

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Tasek Buaya Ordinary Portland Cement (OPC) 50KG

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  • Brand Tasek
  • Model: TASEK-OPC
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What is Ordinary Portland Cement (OPC)? 

Ordinary Portland Cement (OPC) is one of several types of cement being manufactured throughout the world. OPC is the general purpose cement used in concrete constructions. OPC is a compound of lime (CaO), silica (SiO2), alumina (AL2O3), iron (Fe2O3) and sulphur trioxide (SO3). Magnesium (MgO) is present in small quantities as an impurity associated with limestone. SO3 is added at the grinding stage to retard the setting time of the finished cement. When cement raw materials containing the proper proportions of the essential oxides are ground to a suitable fineness and then burnt to incipient fusion in a kiln, chemical combination takes place, largely in the solid state resulting in a product aptly named clinker. This clinker, when ground to a suitable fineness, together with a small quantity of gypsum (SO3) is Portland Cement. 

  • ASTM: Type I. 
  • MS EN 197-1:2007. 
  • Properties: Ordinary. 
  • Uses: General. 


Why is it called Portland Cement? 

Invented in 1824 by the UK bricklayer Joseph Aspdin (1779-1855), it gets its name from its resemblance upon hardening to the famous Portland limestone obtained from quarries on the Isle of Portland. 


Cement Quality 

The quality of Portland cement is defined by Malaysian Standard MS EN 197-1:2007, which is adopted from European Standard EN 197-1:2000. These standards specify a series of test for which the cement will have to conform to. The most common being : 

  • Fineness - Blaine Method . 
  • Chemical Composition . 
  • Strength - Mortar / Concrete Cubes . 
  • Setting Time - Vicat Method . 
  • Soundness - Le'Chatelier Method . 


Types of Cement 

Portland Cement
Ordinary portland cementtype I522ordinaryGeneral
Super High early strength portland cementtype III522rich in C3S, finer ground, high early strengthWinter, Urgent
Super high early strength portland cement  good particle size distribution, rich in SO3 higher in early strength than type IIIWinter, Urgent
Moderate heat portland cementtype II low in C3S, low in C3A, low heat of hydration & high long term strengthDam, Mass concrete
Low heat portland cementtype IV low heat of hydration, low early strengthDam, Mass concrete
Sulphate resisting cementtype V1037low in C3A, high chemical resistanceUnderground water
White portland cement 888minute in iron, pure-white, fine ground, high early strengthBuildings, Arts
Portland blast furnace slag cementtype IS1389low heat of hydration, good chemical resistance, high long term strength, less shrinkageDam, Mass concrete
Portland pozzolan cementtype IP blended with siliceous material, low heat of hydration, good durability, good chemical resistanceCivil work, Mass concrete
Portland fly-ash cement 1227good workability & fluidity, slow set, low heat of hydration, high long term strengthCivil work, Pre-packed concrete
Super-sulphate slag cement 1388high long term strength, small shrinkage, easy to aerateUnderwater concrete
Masonry cement 794goodplasticity, water retentivity, water tightness & low shrinkageMasonry, for joints


All product images shown are for illustration purposes only. Actual products may varies in term of size, type, brand, version, colour, and other relevant characteristics.  

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