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
| Oct 4, 2022
Rental property owners want access to utility usage data for whole properties
As pressure from investors for ESG reporting mounts, owners of multifamily properties increasingly look to collect whole-building utility usage data.
| Oct 4, 2022
In dire need of affordable housing, Aspen, Colo. will get a development that provides 277 affordable homes
A few miles from downtown Aspen, Colo., a development will provide 277 new affordable homes for an area experiencing a dire affordable housing crisis.
Green | Oct 3, 2022
California regulators move to ban gas heaters for existing buildings
California regulators voted unanimously recently on a series of measures that include a ban on the sale of natural gas-powered heating and hot water systems beginning in 2030.
| Oct 3, 2022
The College of the Holy Cross completes a $110 million performing arts center
In Worcester, Mass., a one-hour drive from Boston, the College of the Holy Cross has completed its $110 million Prior Performing Arts Center.
Resiliency | Sep 30, 2022
Designing buildings for wildfire defensibility
Wold Architects and Engineers' Senior Planner Ryan Downs, AIA, talks about how to make structures and communities more fire-resistant.
| Sep 30, 2022
Manley Spangler Smith Architects partners with PBK in strategic merger
Manley Spangler Smith Architects (MSSA), a Georgia-based, full-service architectural firm specializing in educational and municipal facilities, announced today a significant development aimed at increasing its capabilities, expertise, and suite of services.
| Sep 30, 2022
Lab-grown bricks offer potential low-carbon building material
A team of students at the University of Waterloo in Canada have developed a process to grow bricks using bacteria.
| Sep 29, 2022
FitzGerald establishes Denver office
The new location bolsters FitzGerald’s nationwide reach and capitalizes on local expertise and boots-on-the-ground to serve new and existing clients seeking to do business in Denver and the Front Range, as well as the Southwest United States, California, and Texas.
| Sep 28, 2022
New digital platform to foster construction supply chains free of forced labor
Design for Freedom by Grace Farms and the U.S. Coalition on Sustainability formed a partnership to advance shared goals regarding sustainable and ethical building material supply chains that are free of forced labor.
| Sep 27, 2022
New Buildings Institute released the Existing Building Decarbonization Code
New Buildings Institute (NBI) has released the Existing Building Decarbonization Code.