National Ready Mixed Concrete Association (NRMCA) members have lowered their carbon footprint by 13% in five years, according to an association news release.
“The 13% reduction in carbon footprint is for 4,000 psi (pounds per square inch) concrete, the most frequently used concrete in the United States,” said James Bogdan, senior director, sustainability initiatives for NRMCA. “Carbon footprint reduction ranged from 8% for 2,500 psi concrete and 20% for 8,000 psi concrete.”
The reductions are mainly due to more efficient use of Portland cement, the primary binder used to make concrete. NRMCA’s performance-based specifications have helped eliminate prescriptive limits on concrete formulation such as minimum cement content and low water-to-cement ratio.
These limitations unnecessarily drive up cement content, the main contributor to carbon emissions, the release says. Some NRMCA members have lowered their carbon even more through innovation. For some applications and projects, concrete producers are incorporating technologies such as supplementary cementitious materials, low-carbon cements, and carbon capture to lower carbon footprint by 50% or more.
Related Stories
| Jul 11, 2014
California Supreme Court rules that architects can be sued by condo association
The decision held that even though, on most projects, the developer has the final say on design choices, the architect can’t escape liability to the end user.
| Jul 10, 2014
Latest construction accident fatality statistics reverse trend of declining deaths
The latest data on construction site fatalities for 2012 shows a rise in the death rate to 9.9 per 100,000 workers after 2011 had reached a recent low of 9.1 per 100,000, according to an analysis of data by the AFL-CIO.
| Jul 10, 2014
EPA seeking public comments on site contamination rules
The Environmental Protection Agency (EPA) is accepting public comment on its proposal to eliminate the dual standard for compliance with rules pertaining to testing of land that may have been contaminated by chemical pollution.
| Jul 10, 2014
Southern California city considers new water fee for developers
A persistent drought in Southern California could lead to a water fee for new construction projects in Ventura.
| Jul 1, 2014
$1 billion master planned development in California clears key hurdle
Plans for a new section of the proposed $1 billion La Entrada master-planned community in Coachella, Calif., moved ahead after the developer and city council agreed that the plan would include 500 affordable housing units.
| Jul 1, 2014
Dept. of Labor reaches settlement for $5 million in back wages for workers on federally assisted project
The U.S. Department of Labor and MDG Design & Construction LLC have reached a settlement over wage violations at the federally-assisted 26-story Grand Street Guild rehab project in New York City’s Lower East Side.
| Jul 1, 2014
GSA, Homeland Security research leads to performance-based design guide
The National Performance Based Design Guide, based on research and development supported by the Science & Technology Directorate of the Department of Homeland Security and the Public Buildings Service of the General Services Administration, is now available.
| Jul 1, 2014
FEMA grant helps fund school theater that will double as tornado safe room
Scott City School District in Missouri recently broke ground on an 8,990-sf performing arts theater that will also function as a tornado safe room.
| Jun 30, 2014
Research finds continued growth of design-build throughout United States
New research findings indicate that for the first time more than half of projects above $10 million are being completed through design-build project delivery.
| Jun 26, 2014
Canadian groups combine forces to support EPD program for LEED v4
The Canadian Standards Association (CSA) Group and the Canada Green Building Council (CaGBC) will collaborate to support LEED v4 and CSA Group’s Environmental Product Declaration (EPD) program.