CASE STUDY www.fosroc.com Copassa established a precast yard to manufacture 800,000 sleepers for the Haramain High Speed Railway from Madenah to Mecca, with a targeted total concrete quantity of around 150,000 cubic meters. The concrete specification required not less than 46Mpa after 24 hours with ultimate strength of 60 Mpa at 28 days, high early strength is required to enable utilising the precast beds more frequently allo

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