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
| May 9, 2013
Proposed ASHRAE systems manual uniform procedure guideline open for public review
A proposed guideline that will establish a uniform procedure for transmitting design, construction, testing, and operational information to building owners and operators is open for public comment.
| May 9, 2013
Post-tornado Greensburg, Kan., leads world in LEED-certified buildings per capita
Six years after a tornado virtually wiped out the town, Greensburg, Kan., is the world's leading community in LEED-certified buildings per capita.
| May 9, 2013
SMACNA’s new HVAC sound and vibration guide open for public review
Sheet Metal and Air Conditioning Contractors National Association’s (SMACNA’s) new “HVAC Systems Sound and Vibration Guide” is available for a 45-day public review.
| May 9, 2013
NSF Sustainability launches VOC emissions testing, certification for commercial furniture industry
New program offers sustainable certification and indoor air quality testing for commercial furniture makers.
| May 1, 2013
House bill would give OSHA more authority over state workplace-safety plans
A recently introduced U.S. House of Representatives bill would give the Occupational Safety and Health Administration (OSHA) more authority over state workplace-safety plans and toughen penalties for companies that knowingly violate OSHA regulations.
| May 1, 2013
New commercial landlord disclosures go into effect in California in July
Two new landlord disclosure requirements become effective in California on July 1, 2013.
| May 1, 2013
New ASHRAE residential indoor air quality standard adds carbon monoxide alarm requirement
The new 2013 version of ASHRAE’s residential indoor air quality standard adds a requirement for carbon monoxide alarms.
| May 1, 2013
AAMA publishes standard for multipoint locking hardware for side-hinged doors
The American Architectural Manufacturers Association (AAMA) recently published the first North America standard for multipoint locking hardware for side-hinged door systems.
| Apr 24, 2013
‘W visa’ program could hamper construction industry's growth
The Senate’s bipartisan immigration reform proposal will provide interim legal status to some 11 million undocumented people.
| Apr 24, 2013
North Carolina bill would ban green rating systems that put state lumber industry at disadvantage
North Carolina lawmakers have introduced state legislation that would restrict the use of national green building rating programs, including LEED, on public projects.
