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
Healthcare Facilities | Aug 28, 2015
7 (more) steps toward a quieter hospital
Every hospital has its own “culture” of loudness and quiet. Jacobs’ Chris Kay offers steps to a therapeutic auditory environment.
Healthcare Facilities | Aug 28, 2015
Shhh!!! 6 ways to keep the noise down in new and existing hospitals
There’s a ‘decibel war’ going on in the nation’s hospitals. Progressive Building Teams are leading the charge to give patients quieter healing environments.
Architects | Aug 28, 2015
How to transition leadership within your architecture firm, Part 2
Close to retiring? Without a plan for leadership transition, you might not foster candidates who will be capable of taking over the reins, says Whitehorn Financial's Steve Whitehorn.
Retail Centers | Aug 27, 2015
Vallco Shopping Mall renovation plans include 'largest green roof in the world'
The new owners of the mall in Cupertino, Calif., intend to transform the outdated shopping mall into a multi-purpose complex, topped by a 30-acre park.
Libraries | Aug 27, 2015
Barack Obama Foundation begins search for presidential library architect
Both national and foreign firms will compete for chance to design the Chicago-based Presidential Center.
Architects | Aug 27, 2015
How to transition leadership within your architecture firm, Part 1
In order for your firm to thrive and preserve your legacy after retirement, it is essential that you create a strategic plan to not only transition ownership of your firm but its leadership as well.
Mixed-Use | Aug 26, 2015
Innovation districts + tech clusters: How the ‘open innovation’ era is revitalizing urban cores
In the race for highly coveted tech companies and startups, cities, institutions, and developers are teaming to form innovation hot pockets.
Office Buildings | Aug 19, 2015
Good design can combat open-office issues
Three tricks to maintain privacy and worker production in a cube-less world, according to GS&P's Jack E. Weber
Architects | Aug 19, 2015
Despite dip, architecture billings remain strong
The American Institute of Architects (AIA) reported the July ABI score was 54.7, down a point from a mark of 55.7 in June.
Architects | Aug 17, 2015
Historic power plant converted to modern offices in Minnesota
A landmark power plant in Owatonna, Minn., damaged in a 2010 flood has new life as the headquarters of Owatonna Public Utilities following a renovation by architects Leo A. Daly.