Concrete Products

AUG 2015

Concrete Products covers the issues that attract producers of ready mixed and manufactured concrete focusing on equipment and material technology, market development and management topics.

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www.concreteproducts.com August 2015 • 17 BRIEFS PRODUCERS Cemex USA Exec- u t i ve V i c e P re s i - dent, Commercial and Public Affairs Frank Craddock has received the William B. Hicklin Lifetime Achievement Award from the Florida Concrete & Prod- ucts Association. " F ra n k 's de d i - cation and vision for our industry is greatly valued and on behalf of FC&PA, and industry leaders, it is my honor to select him as recipient of this prestigious award," says FC&PA Chairman Kim Duke. "[His] positive influence and leadership within our industry throughout many posts, including past chairman, National Ready Mixed Concrete Association, has greatly promoted our industry to new heights." "Frank has been influential throughout many aspects of the industry, and his vision while chair- man of the NRMCA, founding chairman of the Con- crete Sustainability Hub at MIT, and most recently as chairman of the National Steering Committee of the Concrete Industry Management program has been invaluable for the industry and Cemex," adds Cemex USA President Karl Watson, Jr. "We are bless- ed to have him as a member of our team for what he contributes both internally and externally." Tests by engineers at Purdue University and Solidia Technologies show concrete cured with carbon dioxide paces traditional portland cement- based specimens for resistance to cold weather and exposure to extreme conditions. "On mul- tiple indicators, our findings underscore com- parable or favorable performance of the calcium silicate-based carbonated concrete under severe conditions," affirms Professor of Civil Engineering Jan Olek, Ph.D., P.E., who co-directs the ongoing research with Professor Jason Weiss, Ph.D. A new white paper detailing results of tests measuring specimen exposure to damaging con- ditions, "Performance of Calcium Silicate-based Carbonated Concretes vs. Hydrated Concretes under Freeze-thaw Environments," shows two types of CO2-cured concrete exhibiting good scaling resistance. Starting with a sustainable cement, the CO2-curing technology reduces water consumption in the production of concrete up to 80 percent, carbon emissions up to 70 percent, and the curing time to one day. New Jersey-based Solidia Technologies has developed a calcium silicate-based cement, which emits less CO2 during production compared to ordinary portland cement milling. Authoring the paper, which can be download- ed at www.solidiatech.com, are Purdue graduate student HyunGu Jeong and Solidia Technologies Senior Research Scientist Jitendra Jain, Ph.D., Director of Research and Development Vahit Atakan, Ph.D, and Chief Technology Officer Nich- Frank Craddock olas DeCristofaro, Ph.D. The Purdue-Solidia team is conducting long-term investiga- tions exploring "Failure Mechanisms in Concrete: A Comparative Study of the Ordi- nary Portland Cement and Solidia Cement Concretes." A fixture in the Las Vegas and southern California concrete masonry markets for nearly 70 years, Cind-R-Lite is adopting carbon dioxide-based curing processes of CarbonCure Technologies, applying them to precision, split face, ground face and shot blast block offerings. Availability of CO2-sequestering concrete masonry dove- tails a green building material-friendly procurement environment, underpinned by the Clark County School District's plan to develop 12 schools over the next five years—seven on track for opening by 2017.

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