Concrete Products

FEB 2018

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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Page 24 of 89 February 2018 • 21 NEWS SCOPE ORGANIZATIONS ASTM International Subcommittee C09.48 on Per- formance of Cementitious Materials and Admixture Combinations' working document, WK40615 Guide for Comparing Performance of Concrete Materials Using Mortar Mixtures, standardizes longstanding material-performance investigation protocol. "This diagnostic tool will provide concrete technologists with useful defined mortar pro- cedures to help anticipate an incompatibility of previously untested material combinations, or to troubleshoot unexpected concrete performance," says Ara Jeknavorian, consultant and Grace Con- struction Products veteran. The guide will assist suppliers, producers, test- ing labs and government agencies with material selection and quality control processes. Technol- ogists can use one of its mortar tests to compare the relative workability, workability retention, set time, strength, and air content of two or more combinations of cement, sand, admixture, and fly ash. Test results could indicate that a change in material properties might favorably or unfavor- ably impact concrete performance. Results could also flag a potential material incompatibility that could become evident from poor concrete work- ability, high air content or delayed set times. "Should a discrepancy occur between parties on whether a particular material may be respon- sible for an unexpected concrete performance, the guide will enable two or more labs to conduct the same test procedures to help come to a consensus cause of the problem," Jeknavorian notes. Subcommittee C09.48 is part of ASTM Com- mittee C09 on Concrete and Concrete Aggregates, whose next meeting is June 24-28 at the Sheraton Hotel & Marina, San Diego. ASTM 2018 CHAIRMAN Dale Bohn, product quality manager for Flint Hills Resources LP, in St. Paul, Minn., has been elected 2018 ASTM International chairman, lead- ing a 25-director board and transitioning from the same capacity at Safety Equipment Institute, an ASTM affiliate. Bohn has served in his current Flint Hills role since 2011 and oversees develop- ment, formulations, testing and process support for petroleum and other products. He previously served as a technical leader for Flint Hills and peer operator Koch Materials Co. An ASTM International member since 1996, Bohn is a member of Committee D04 on Road and Paving Materials (D04). He serves on multiple D04 groups and has chaired Subcommittees D04.41 on Emulsified Asphalt Specifications and D04.42 on Emulsified Asphalt Test. He is also a member of Committees D02 on Petroleum Products, Liquid Fuels, and Lubricants and D03 on Gaseous Fuels. He was an ASTM Committee on Technical Com- mittee Operations (COTCO) member from 2006 to 2011, co-chairing the final three years. A director since 2012, Bohn also chaired the board's Finance and Audit Committee in 2015. ASTM guide measures mix performance, material compatibility 2017 MATHER AWARD ASTM Committee C01 on Cement has pre- sented the Bryant Mather Award to National Institute of Standards and Technology Phys- ical Scientist Paul Stutzman. Named for a longtime C01 member and Army Corps of Engineers institution, the award recognizes Stutzman's contributions to the develop- ment of various committee standards related to quantitative analysis of portland cement and work on behalf of Subcommittee C01.23 on Compositional Analysis. Stutzman has also earned the ASTM Award of Appreciation (2011), P.H. Bates Memorial Award (1992, 2008), and Award of Merit (2013). TECHNOLOGY TO HAND YOU A COMPETITIVE ADVANTAGE Visit us in Booth #627 @ The Precast Show 407.367.2400 Enable Accountability Expedite Information Increase Efficiency Drive Customer Satisfaction Maximize Collaboration Optimize Performance

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