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
| Feb 26, 2012
Alvarez-Glasman & Colvin’s Chen LEED certified
Chen works closely with property owners to ensure that their properties meet and exceed all industry standards, and also provide long-term energy savings.
| Feb 24, 2012
ABI remains positive for three straight months
The AIA reported the January ABI score was 50.9, following a mark of 51.0 in December.
| Feb 24, 2012
Larry Lord joins HDR Architecture as south region science and technology director
A founding partner at Lord, Aeck & Sargent, Lord is nationally renowned for his leadership in architecture for complex projects.
| Feb 24, 2012
Pottorff elevated to principal at Ricci Greene Associates
Pottorff is recognized in the justice field as an expert solely dedicated to the design and planning of courts and urban jails in both the U.S. and Canada.
| Feb 24, 2012
Skanska hires Tingle as senior VP and national director for its Sports Center of Excellence
Tingle has worked in the architecture and construction industries for more than 30 years, and for the last 23 years, he has focused primarily on large-scale sports construction projects
| Feb 23, 2012
Federal budget cuts put major building projects on hold
A plan to build the National Bio and Agro-Defense Facility in Kansas is among several major building projects in jeopardy after the Obama administration’s 2013 budget was unveiled. The budget would cut all construction spending for the facility.
| Feb 23, 2012
Regulators investigating construction accident at World Trade Center
The New York Port Authority and the city’s fire and building departments are investigating an accident at the World Trade Center construction site in lower Manhattan after a crane dropped steel beams that fell about 40 stories onto the truck that delivered them.
| Feb 22, 2012
ACI BIM manual for cast-in-place concrete in development
The improved communication, coordination, and collaboration afforded by BIM implementation have already been shown to save time and money in projects.
| Feb 22, 2012
Siemens earns LEED certification for Maryland office
The Beltsville facility, which also earned the ENERGY STAR Label for energy performance, implemented a range of energy efficiency, water conservation and sustainable operations measures as part of the certification process.