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
| Jun 13, 2017
Accelerate Live! talk: Incubating innovation through R&D and product development, Jonatan Schumacher, Thornton Tomasetti
Thornton Tomasetti’s Jonatan Schumacher presents the firm’s business model for developing, incubating, and delivering cutting-edge tools and solutions for the firm, and the greater AEC market.
| Jun 13, 2017
Accelerate Live! talk: The future of computational design, Ben Juckes, Yazdani Studio of CannonDesign
Yazdani’s Ben Juckes discusses the firm’s tech-centric culture, where scripting has become an every-project occurrence and each designer regularly works with computational tools as part of their basic toolset.
Industry Research | Jun 13, 2017
Gender, racial, and ethnic diversity increases among emerging professionals
For the first time since NCARB began collecting demographics data, gender equity improved along every career stage.
Architects | Jun 7, 2017
Build your very own version of Frank Lloyd Wright’s Guggenheim Museum with this new LEGO set
744 LEGO bricks are used to recreate the famous Wright design, including the 1992 addition.
Multifamily Housing | Jun 7, 2017
Multifamily visionary: The life and work of architect David Baker
For 35 years, architect David Baker has been a spirited voice for affordable housing, in San Francisco and beyond.
Architects | Jun 5, 2017
NCARB launches second alternative path to architect certification
Architects without a professional degree in architecture can now earn NCARB certification through an alternate path.
Architects | Jun 2, 2017
NELSON joins forces with Cope Linder and KA
More growth ahead, as NELSON expects to double its workforce and revenue this year.
Office Buildings | Jun 2, 2017
Strong brew: Heineken HQ spurs innovation through interaction [slideshow]
The open plan concept features a Heineken bar and multiple social zones.
| Jun 2, 2017
Accelerate Live! talk: How maker culture is transforming Sasaki’s design practice
Sasaki’s Pablo Savid-Buteler and Brad Prestbo talk about how the firm’s maker initiatives are changing the way Sasaki goes to market, and how they are helping the firm win new business.
| May 30, 2017
Accelerate Live! talk: The ROI of innovation culture, Russ Sykes, SmithGroupJJR
Russ Sykes discusses SmithGroupJJR’s ongoing journey to create a firm culture that ignites innovation and propels change across all levels of the organization.