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 | Aug 26, 2021
California may require solar on new high-rise residential and commercial buildings
State energy commission approves proposal; Could become law in 2023.
Codes and Standards | Aug 25, 2021
Study finds racism, discrimination common in construction industry
NIBS to share best practices with industry leaders to improve worker treatment.
Codes and Standards | Aug 24, 2021
White paper addresses insulated metal panel specifications for roofs and walls
Pertains to provisions of the National Building Code of Canada.
Codes and Standards | Aug 24, 2021
KTGY releases free resource to reduce carbon footprint in multifamily developments
Helps navigate Denver Green Code measures—a series of voluntary codes.
Codes and Standards | Aug 19, 2021
Massive infrastructure bill includes hundreds of millions for building energy efficiency
Funds allotted for updated code implementation, construction technology, K-12 efficiency programs.
Codes and Standards | Aug 18, 2021
Fannie Mae green bonds program could be greenwashing
Analysis shows significant number of green bond properties become less efficient.
Codes and Standards | Aug 17, 2021
Three Texas cities head list of most environmentally vulnerable
Hazard analysis includes natural disasters and government response categories.
Codes and Standards | Aug 16, 2021
Bill would reform New York’s public contracting process
Council on Public Contracting Reform to have contractor representation.
Codes and Standards | Aug 12, 2021
AGC pushes for more environmentally friendly construction
Contractor trade group supports government investment, tax incentives to reduce carbon footprints.
Codes and Standards | Aug 11, 2021
Decentralized approach to codes means emissions reduction responsibility falls on local officials
Efficiency advocates focusing more on local code amendments.