Do as the Romans: Power plant concrete strengthens with time

A rare mineral that has allowed Roman concrete marine barriers to survive for more than 2,000 years has been found in the thick concrete walls of a decommissioned nuclear power plant in Japan. The formation of aluminous tobermorite ...

Philippine volcano alert lowered, thousands return home

Philippine authorities on Sunday lowered the alert level at Taal Volcano, two weeks after it began spewing ash, steam and rocks, a move that will allow many of the more than 376,000 displaced villagers to return home.

Limestone powder enhances performance of 'green' concrete

Adding limestone powder to "green" concrete mixtures—those containing substantial amounts of fly ash, a byproduct of coal-burning power plants—can significantly improve performance, report researchers from the National ...

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