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
| Sep 7, 2012
Net-zero energy pioneers on the el-hi frontier
Getting to net-zero is not easy, but the promise of eliminating energy bills and using state-of-the-art technology as a learning lab can make a compelling case to reach for net-zero.
| Sep 7, 2012
Healthcare architects get a preview of tomorrow’s medical landscape
The topic on everyone’s mind was how the Affordable Care Act would impact healthcare design and construction––and whether the law would even make it past the coming election cycle.
| Sep 7, 2012
Goettsch Partners designs new tower in Abu Dhabi
Al Hilal Bank’s 24-story flagship development provides contemporary office space.
| Sep 7, 2012
Suffolk awarded One Channel Center project in Boston
Firm to manage $125 million, 525,000-sf office building project.
| Sep 7, 2012
Duffy joins Thornton Tomasetti
At Hardesty & Hanover, Duffy partnered with Thornton Tomasetti on a number of projects.
| Sep 7, 2012
Lucile Packard Children’s Hospital breaks ground on expansion
Sustainability and nature at the heart of the new addition at the Stanford University Medical Center designed by Perkins+Will.
| Sep 6, 2012
Young Spirit of Nature Wood Architecture award to Tiina Antinoja
The award is given for a student work in which wood as a building material has a central role.
| Sep 6, 2012
CPPI awarded $30.3 million contract for University of Florida’s Harrell Medical Education Building
The specialized interdisciplinary learning environment will serve as a focal point for integration and program development for all primary care educational activities in the College of Medicine.
| Sep 5, 2012
Pagano joins Thornton Tomasetti as Vice President in Newark office
Pagano is a Certified Energy Planner and Certified Energy Manager through the Association of Energy Engineers.
