Responding to the White House’s second phase of fuel economy standards for heavy-duty trucks, targeted for 2015-16 rulemaking and implementation, Portland Cement Association CEO Gregory Scott noted, “We should expand the debate beyond making more efficient [vehicles] to making more efficient infrastructure.”
Read MoreTag: CSHub
MICROSTRUCTURE-BASED KINETICS MODEL
A November 2013 CSHub research profile letter, “Early hydration: A local business,” charts calorimetry (heat measurement) curves from tricalcium silicate paste experiments—with specimens of three particle size distributions (PSD)—to support a proposed model of microstructure-based kinetics. It suggests a “reaction zone” extending a few micrometers in from the cement particle surface, and can reconcile longtime observations on PSD and water/cement ratio.
Read MoreConcrete Sustainability Hub responds to Obama Climate Action Plan challenges
The Massachusetts Institute of Technology-hosted Concrete Sustainability Hub (CSHub) released a statement last month after the White House outlined strategy to curtail greenhouse gas emissions.
Read MoreLife-cycle data specialist takes helm at CSHub
An engineer who studies materials’ economic and environmental implications, recycling and end-of-life recovery, Jeremy Gregory has been named executive director of the Massachusetts Institute of Technology-hosted Concrete Sustainability Hub (CSHub), succeeding Hamlin Jennings.
Read MoreMIT’s CSHub responds to White House Climate challenges
Source: Concrete Sustainability Hub at Massachusetts Institute of Technology, Cambridge
In a statement on President Obama’s Climate Action Plan, the MIT-hosted Concrete Sustainability Hub (CSHub) cited work since 2010 to address two of his key points: building a 21st century transportation sector and reducing greenhouse gas emissions.
Read MoreMIT CSHub’s well-directed energies
New U.S. Energy Information Administration (EIA) figures reinforce a well-worn statistic in the climate change discussion: portland cement production accounts for about 5 percent of global carbon dioxide emissions. The carbon load reflects high temperature raw feed preheating and kiln phases, plus power-hungry clinker grinding.
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