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
Office Buildings | Sep 2, 2016
Eight-story digital installation added as part of ESI Design’s renovation of Denver’s Wells Fargo Center
The crown jewel of a three-year makeover project, the LED columns bring the building’s lobby to life.
| Sep 1, 2016
TRANSIT GIANTS: A ranking of the nation's top transit sector design and construction firms
Skidmore, Owings & Merrill, Perkins+Will, Skanska USA, Webcor Builders, Jacobs, and STV top Building Design+Construction’s annual ranking of the nation’s largest transit sector AEC firms, as reported in the 2016 Giants 300 Report.
| Sep 1, 2016
INDUSTRIAL GIANTS: A ranking of the nation's top industrial design and construction firms
Stantec, BRPH, Fluor Corp., Walbridge, Jacobs, and AECOM top Building Design+Construction’s annual ranking of the nation’s largest industrial sector AEC firms, as reported in the 2016 Giants 300 Report.
| Sep 1, 2016
HOTEL SECTOR GIANTS: A ranking of the nation's top hotel sector design and construction firms
Gensler, HKS, Turner Construction Co., The Whiting-Turner Contracting Co., Jacobs, and JBA Consulting Engineers top Building Design+Construction’s annual ranking of the nation’s largest hotel sector AEC firms, as reported in the 2016 Giants 300 Report.
| Sep 1, 2016
CULTURAL SECTOR GIANTS: A ranking of the nation's top cultural sector design and construction firms
Gensler, Perkins+Will, PCL Construction Enterprises, Turner Construction Co., AECOM, and WSP | Parsons Brinckerhoff top Building Design+Construction’s annual ranking of the nation’s largest cultural sector AEC firms, as reported in the 2016 Giants 300 Report.
| Sep 1, 2016
COURTHOUSE GIANTS: A ranking of the nation's top courthouse design and construction firms
DLR Group, NBBJ, Hensel Phelps, Sundt Construction, AECOM, and Dewberry top Building Design+Construction’s annual ranking of the nation’s largest courthouse sector AEC firms, as reported in the 2016 Giants 300 Report.
Airports | Aug 31, 2016
Aircraft manufacturing facility innovation from The Austin Company
Austin’s many innovations contributed to the success of our clients by enabling them to operate in more efficient environments, optimize the flexibility of their operations, and meet aggressive schedules.
| Aug 30, 2016
CONVENTION CENTER GIANTS: A ranking of the nation's top convention center sector design and construction firms
Gensler, LMN Architects, AECOM, Turner Construction Co., and WSP | Parsons Brinckerhoff top Building Design+Construction’s annual ranking of the nation’s largest convention center sector AEC firms, as reported in the 2016 Giants 300 Report.
BIM and Information Technology | Aug 30, 2016
BIM GIANTS: A ranking of the nation's top BIM design and construction firms
HOK, Perkins+Will, Turner Construction Co., The Whiting-Turner Contracting Co., Jacobs, and Thornton Tomasetti top Building Design+Construction’s annual ranking of the nation’s largest BIM AEC firms, as reported in the 2016 Giants 300 Report.
Building Tech | Aug 26, 2016
NBBJ’s Goldilocks sensor technology can help employees find a workspace that is just right
The technology measures light levels, humidity and temperature, motion, and sound.
