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
| Jul 8, 2014
Lost in the Museum: Bjarke Ingels' maze will make you look up and around
The maze, located in the National Building Museum, is a precursor to an exhibit showcasing some of BIG's projects. To navigate the maze, people must look up.
| Jul 7, 2014
5 factors that can affect thermal stress break risk of insulated glass units
The glass type, glass coating, shading patterns, vents, and framing system can impact an IGU’s risk for a thermal break.
| Jul 7, 2014
Team unity pays off for a new hospital in Maine [2014 Building Team Awards]
Extensive use of local contractors, vendors, and laborers brings a Maine hospital project in months ahead of schedule.
| Jul 7, 2014
7 emerging design trends in brick buildings
From wild architectural shapes to unique color blends and pattern arrangements, these projects demonstrate the design possibilities of brick.
| Jul 7, 2014
A climate-controlled city is Dubai's newest colossal project
To add to Dubai's already impressive portfolio of world's tallest tower and world's largest natural flower garden, Dubai Holding has plans to build the world's largest climate-controlled city.
Sponsored | | Jul 7, 2014
Channel glass illuminates science at the University of San Francisco
The University of San Francisco’s new John Lo Schiavo Center for Science and Innovation brings science to the forefront of academic life. Its glossy, three-story exterior invites students into the facility, and then flows sleekly down into the hillside where below-grade laboratories and classrooms make efficient use of space on the landlocked campus.
| Jul 7, 2014
How to keep an employee from jumping ship
The secret to keeping your best employees productive and happy isn’t throwing money at them, as studies have continuously shown that money isn’t the top factor in employee happiness. Here are four strategies from leadership coach Kristi Hedges. SPONSORED CONTENT
| Jul 7, 2014
Nothing fixes a bad manager
Companies seem to try everything imaginable to fix their workplaces, says Gallup Chairman and CEO Jim Clifton in a recent blog post, except the only thing that matters: naming the right person manager. SPONSORED CONTENT
| Jul 3, 2014
Gehry edits Canadian skyscraper plan to be 'more Toronto'
After being criticized for the original tower complex, architect Frank Gehry unveils a new design that is more subtle, and "more Toronto."
| Jul 2, 2014
First Look: Qatar World Cup stadium design references nomadic heritage
Organizers of the Qatar 2022 World Cup, the Supreme Committee for Delivery and Legacy, recently unveiled designs for the second stadium.
