State inspectors in Shenzhen, China, have found at least 15 local plants producing concrete with unprocessed sea sand. Thirty-one companies have been cited for violations, and eight were ordered to suspend business for a year. Construction on multiple projects in Guangdong Province—including the 660-m Ping'an Finance Center—has been halted during the inspection. (Only 80 meters of the Ping'an building has been erected so far; China Construction First Building Group Corp. Ltd. is the primary contractor.)
Unprocessed sea sand is illegal to use as an aggregate in concrete because its chlorine and salt content are corrosive to steel, causing buildings to degrade and potentially collapse within a few decades. River sand, the preferred material, costs twice as much and is in short supply.
The scandal is currently confined to Shenzhen but could spread to other cities given the obvious financial incentives for using sea sand. Inspectors also found that two large sand pits were using seawater instead of fresh water to rinse sand, also a problematic practice.
Industry experts express particular concern because China currently has nine of the putative 20 tallest buildings in the world currently under construction, as well as many other skyscrapers.
(http://www.scmp.com/news/china/article/1191896/shenzhen-construction-hold-after-alert-over-cheap-sand-concrete)
Related Stories
Justice Facilities | Mar 5, 2015
New courthouse blossoms into a civic space for one California town
The building's canopy suggests classical courthouse features of front porch and portico. It also helps connect the building with a public plaza that has re-centered civic activity and public gathering for the town.
Justice Facilities | Mar 5, 2015
State of the state: How state governments are funding construction projects
State budget shortfalls are making new construction and renovation projects a tough sell, leading lawmakers to seek alternative funding for these jobs.
Museums | Mar 5, 2015
A giant, silver loop in Dubai will house the Museum of the Future
The Sheikh of Dubai hopes the $136 million museum will serve as an incubator for ideas and real designs—a global destination for inventors and entrepreneurs.
Sports and Recreational Facilities | Mar 5, 2015
New HOK designs for St. Louis NFL stadium unveiled
Missouri Governor Jay Nixon has assembled a task force to develop plans for an open-air NFL stadium on the North Riverfront of downtown St. Louis.
Codes and Standards | Mar 5, 2015
Charlotte, N.C., considers rule for gender-neutral public bathrooms
A few other cities, including Philadelphia, Austin, Texas, and Washington D.C., already have gender-neutral bathroom regulations.
Codes and Standards | Mar 5, 2015
FEMA cuts off funding to Indiana after Kokomo continues building stadium in flood zone
FEMA will withhold funding on $5.5 million worth of projects such as building tornado safe rooms in schools.
Reconstruction & Renovation | Mar 5, 2015
Chicago's 7 most endangered properties
Preservation Chicago released its annual list of historic buildings that are at risk of being demolished or falling into decay.
Office Buildings | Mar 5, 2015
Goettsch Partners unveils plans for dual office towers in Warsaw
The Mennica Legacy Tower development is divided into a 35-story tower located on the south east side of the site and a 10-story building on the west side.
Hotel Facilities | Mar 4, 2015
Hotel construction pipeline reaches six-year high
After a three-year bottoming formation, the pipeline for hotel construction has posted five consecutive quarters of double-digit year-over-year growth.
BIM and Information Technology | Mar 4, 2015
Why China's CCTV building needed a WiFi retrofit
It took a year-long retrofit to get WiFi transmission issues solved at China's iconic skyscraper.