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
| Apr 3, 2012
Meyer receives RCMA's Martin A. Davis Industry Leadership Award
The Martin A. Davis Industry Leadership Award is presented annually to an individual, selected by his or her peers, who has exemplified outstanding service and made significant contributions to the roof coatings industry.
| Apr 3, 2012
Johns Manville publishes 2011 Sustainability Report
Report covers JM’s long-time sustainability focus and progress towards goals.
| Apr 3, 2012
Educational facilities see long-term benefits of fiber cement cladding
Illumination Series panels made for a trouble-free, quick installation at a cost-effective price. The design for Red Hawk Elementary School stems from the desire to create a vibrant place for kids to learn. In an effort to achieve this design, RB+B Architects selected Nichiha USA to provide a durable yet modern, contemporary exterior finish.
| Apr 2, 2012
TGP launches new fire-rated glazing website
Website offers online continuing education courses registered with the American Institute of Architects (AIA), BIM 3D models, and rapid-response quoting, among other support tools.
| Apr 2, 2012
Gilbane honored for sustainability efforts in Indianapolis
Emmitt J. Bean Federal Center project team for their role in advancing sustainability in the city.
| Apr 2, 2012
Mitsubishi unveils ultra-high-speed elevator for Shanghai skyscraper
The operation of the elevator is scheduled to begin in 2014.
| Apr 2, 2012
Sachse Construction helps complete Salt Lake City’s City Creek Center
Sachse was hired to complete store build-outs at City Creek Center.
| Apr 2, 2012
Culver joins Sasaki as managing director
Culver will work closely with Sasaki firm leaders on issues of strategy, marketing, and business development.
| Apr 2, 2012
EB-5 investment funds new Miramar, Fla. business complex
Riviera Point Holdings breaks ground on $17 million office center.
| Mar 30, 2012
New windows and doors revitalize older buildings
With their improved aesthetics, energy efficiency, and durability, replacement windows and doors can add significant value to a renovation project.
