CONCRETE SOLUTIONS

摘要

If this year's expected global output of cement were somehow poured across Manhattan island, the 3.4-billion-tonne mass would solidify into a monolith about 14 metres high. If the monolith were created next year, it would probably be even bigger, given the construction boom now under way in developing nations such as China and India. Cement is a crucial raw material for civilization, holding together artefacts ranging from the 2,000-year-old Pantheon in Rome to modern skyscrapers and highways.