Scheduled to be the tallest tower in China and the second tallest building in the world by 2015, Kohn Pedersen Fox’s 660-meter-high Ping’an International Finance Center has received a major unexpected set back. Following an industrywide inspection conducted last week, Shenzhen government officials have discovered that a low-quality sea sand has been used by developers to create substandard concrete for KPF’s supertall skyscraper and at least 15 other buildings under construction.
Although sea sand lures contractors by costing half as much as standard river sand, it contains a deadly mixture of salt and chloride that corrodes steel in concrete and threatens the structural integrity of a building over time.
According to Bloomberg, Shenzhen’s Housing and Construction Bureau found 31 companies violated industry rules and ordered eight of them to suspend business for one year in the city for using substandard sea sand to make concrete.
via Bloomberg
