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
Codes and Standards | Apr 17, 2018
Contractor charged with fraud in winning $200 million in federal contracts
Accused of falsely claiming veteran- and minority-owned business status.
Codes and Standards | Apr 16, 2018
Wide variations in adoption of National Electric Code could jeopardize safety
An NFPA report found that code adoption is under heavier political scrutiny, leading to delays and decisions motivated by factors other than safety concerns.
Codes and Standards | Apr 12, 2018
Corruption in New York City construction industry is common
Scale of projects, number of players involved contributes to problem.
Codes and Standards | Apr 11, 2018
Urgent need for government to make communities, infrastructure more resilient
More than 350 people died from extreme weather events in 2017.
Codes and Standards | Apr 10, 2018
Boosting energy efficiency helps reduce health risks
Cleaner air results in fewer heart attacks, respiratory disease, and premature deaths.
Codes and Standards | Apr 9, 2018
U.K. business leaders call for zero-carbon buildings by 2030
Real estate, construction industry executives among those supporting the goal.
Codes and Standards | Apr 5, 2018
In Houston, proposed rules would require building above 500-year flood level
Change would impact 85,739 pieces of property.
Codes and Standards | Apr 4, 2018
New ASTM standard supports stucco use in construction
Provides way to measure tensile strength in vertical applications.
Codes and Standards | Apr 3, 2018
LEED v4.1 O+M for Existing Buildings available for beta testing
Update said to be most inclusive and transparent platform to date.
Codes and Standards | Apr 2, 2018
Experts chosen for ICC, ANCR buildings resilience benchmarks project
Specialists to focus on community preparedness for disasters.