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05May94 UK: OPC'S SUCCESSOR IS IN THE WINGS - BLUE CIRCLE'S MASTERCRETE.

By David Taylor.Blue Circle has produced a cement which is being tipped as a possible replacement for ordinary Portland cement (OPC) in the building trade.The new cement, called Mastercrete, has been developed to 'provide an all-in-one solution for the general builder, bricklayer and plasterer, and give good results in concreting, masonry, rendering and floor screeding', says Blue Circle.It is said to produce a more cohesive mix, better compaction, and claims to spread easier and finish better than other Portland cements, suffer less water segregation and have improved freeze-thaw durability.Tony Edye, national marketing manager with Blue Circle, said 'We saw a need for a cement that was more user-friendly, if you like. You use it just like OPC, but we recommend using a third less water, as that gives better results.'Mr Edye said that Mastercrete was targeted at the building industry rather than civil engineering: 'We need more experience with it before people start using it for grouting and pre-stressed structures.'Mastercrete was launched in 1,500 branches of builders' merchants throughout the country and, said Mr Edye, in the first week it had already replaced about 20 per cent of Blue Circle's bagged OPC sales.'We see it as a possible replacement for OPC in this sector. But the real test will be with repeat orders after the first stock has been sold,' said Mr Edye. CONSTRUCTION NEWS