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 | Jun 22, 2021
6 ways design can supercharge innovation in health sciences and medical education
It might sound radical, but the best way to achieve better collaboration is by eliminating traditional operational silos and the resulting departments.
K-12 Schools | Jun 20, 2021
Los Angeles County issues design guidelines for extending PreK-12 learning to the outdoors
The report covers everything from funding and site prep recommendations to whether large rocks can be used as seating.
Hotel Facilities | Jun 18, 2021
Adaptive reuse for hospitality, with Frank Cretella of Landmark Developers
In an exclusive interview for HorizonTV, Landmark Developers' President Frank Cretella talks about the firm's adaptive reuse projects for the hospitality sector. Cretella outlines his company's keys to success in hospitality development, including finding unique properties and creating memorable spaces.
Architects | Jun 16, 2021
BSB Design acquires California architectural firm Withee Malcolm
The acquisition marks a pivotal step in BSB Design’s long-term strategic plan.
Architects | Jun 15, 2021
Sandy Hook Permanent Memorial set to break ground
SWA Group designed the project.
Architects | Jun 15, 2021
Chicago Architecture Center and Chicago Architectural Club announce competition calling for new visions for State of Illinois “Thompson Center”
Competition seeks to give State of Illinois Center new life while preserving its architecture and public character.
Wood | Jun 10, 2021
Three AEC firms launch a mass timber product for quicker school construction
TimberQuest brand seeks to avoid overinvestment in production that has plagued other CLT providers.
Office Buildings | Jun 10, 2021
The future of the workplace is social clubs
Office design experts from NELSON Worldwide propose a new concept for the workplace, one that resembles the social clubs of the past.
Multifamily Housing | Jun 3, 2021
Student Housing Trends 2021-2022
In this exclusive video interview for HorizonTV, Fred Pierce, CEO of Pierce Education Properties, developer and manager of off-campus student residences, chats with Rob Cassidy, Editor, MULTIFAMILY Design + Construction about student housing during the pandemic and what to expect for on-campus and off-campus housing in Fall 2021 and into 2022.
Architects | Jun 2, 2021
Two new practice leaders appointed at FGM Architects
FGM Architects appoints Jan Behounek to lead Higher Education and Scott Nall to lead Federal Practice.