ORDINARY PORTLAND CEMENT (OPC)

 
 

Ordinary Portland Cement (OPC) is the most common cement used in general concrete construction when there is no exposure to sulphates in the soil or groundwater.

 

 

What is OPC?

Ordinary Portland Cement (OPC) is the most common cement used in general concrete construction when there is no exposure to sulphates in the soil or groundwater. OPC manufactured by Lafarge Malaysia exceeds the quality requirements specified in the Malaysian Standard MS 522 : Part 1: 1989 Specifications for Ordinary Portland Cement. Our OPC is manufactured under an effective system of testing, control and monitoring, conforming to requirements under SIRIM's product Certification License. Lafarge Malaysia's OPC is sold in bulk.

 

Manufacture

 

The raw materials required for the manufacture of OPC are calcareous material such as limestone or chalk and argilaceous materials such as shale or clay. A mixture of these materials is burnt at a high temperature of approximately 1400 0C in a rotary kiln to form clinker. The clinker is then cooled and grounded with a requisite amount of gypsum into fine powder known as portland cement.

 

OPC is a gray coloured powder. It is capable of bonding mineral fragments into a compact whole when mixed with water. This hydration process results in a progressive stiffening, hardening and strength development.

 

Compatibility

 

OPC manufactured by Lafarge Malaysia is compatible with admixtures meeting BS 5075 Part 1, for normal dosages and conditions. It can be blended for use with other portland cement.

 

Quality Assurance Quality Control

 

In the manufacture of OPC, the proportioning of raw materials is strictly controlled at all stages to ensure that the quality of the finished product well exceeds the quality requirements stipulated in the relevant standard specifications.

 

Loading for Despatch

 

Lafarge Malaysia's OPC is available in bulk. The OPC drawn from the silos is loaded into trucks  delivery. In addition to that, our Langkawi Plant provides a strategic location to load bulk OPC into ships berthing alongside the wharf next to the plant for export market.