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
Architects | Sep 19, 2017
What we talk about when we talk about placemaking
What does Good Growth mean and how do we set about achieving it?
Architects | Sep 13, 2017
Leo A Daly hires hospitality-design veteran to lead its Dallas office
Ken Martin views this sector as an incubator of innovation.
Museums | Sep 8, 2017
CAF announces plans for 20,000-sf Chicago Architecture Center to be built on East Wacker Drive
The Adrian Smith + Gordon Gill-designed space will open in summer 2018.
Architects | Sep 6, 2017
Fake architect caught in ‘Operation Vandelay Industries’ sentenced to 2 1/3 to 7 years in prison
The fake architect must also pay a $115,000 restitution.
Architects | Sep 6, 2017
Top 110 university architecture firms
Perkins+Will, Gensler, and CannonDesign top BD+C’s ranking of the nation’s largest university sector architecture and AE firms, as reported in the 2017 Giants 300 Report.
Contractors | Sep 6, 2017
Following the money: G702 progress payment certifications
There is no single method of calculating progress payments, but the most common formula is the percentage of completion applied to the total contract price, less a retainage which is held by the owner until final acceptance of the project.
Multifamily Housing | Sep 5, 2017
Free WiFi, meeting rooms most popular business services amenities in multifamily developments
Complimentary, building-wide WiFi is more or less a given for marketing purposes in the multifamily arena.
Architects | Sep 1, 2017
5 reasons why AEC firms need to focus on employer branding
Not to be confused with the branding of your firm overall, your employer brand is defined by your reputation as a workplace.
Healthcare Facilities | Sep 1, 2017
Caring for caregivers
Many healthcare organizations are increasingly focused on designing amenities, policies, and workplaces to better support their clinicians, health providers, and administrators.
Architects | Aug 31, 2017
How Instagram is changing the design industry
The digital and physical worlds are colliding. How will social media platforms influence the way we design spaces?