Page 42

2016WinterShotcreteEMag

2015 Carl E. Akeley Award The tenth annual Carl E. Akeley Award was presented to Ezgi Yurdakul on behalf of herself and co-author, Klaus-Alexander Rieder of GCP Applied Technologies, for their paper, “Effect of Pozzolanic-Based Rheology Control Agent as a Replacement for Silica Fume.” Silica fume, often added to shotcrete mixtures to improve strength and durability while reducing rebound, also brings challenges with its use. This paper, published in the Spring 2015 issue of Shotcrete magazine, evaluated the experimental use of a pozzolanic-based rheology control agent to provide benefits similar to silica fume while minimizing its challenges. Conclusions from this study supports the success of this agent in this endeavor. The award was presented by ASA Publications Committee Chair Ted Sofis. ASA established the Carl E. Akeley Award to honor his founding of what is today referred to as the shotcrete process. This award is presented to the author(s) of the best technical article appearing in Shotcrete magazine in the past 12 months, as determined by the Akeley Award Committee of ASA. Carl E. Akeley invented the cement gun in 1907 and introduced a commercial version of it at the Cement Show in New York in December 1910. For this reason, Akeley is considered the inventor of the shotcrete process.¹ Born in Clarendon, NY, on May 19, 1864, Akeley was a noted naturalist, taxidermist, inventor, photographer, and author. He made many significant contributions to the American Museum of Natural History and many other museums around the United States. He initially invented the cement gun to repair the façade of the Field Columbian Museum and later used it to improve the quality of his taxidermy exhibits at the museum. Akeley made five expeditions to Africa, during which time he procured many animals for museum exhibits. President Theodore Roosevelt accompanied him on one of those expeditions and encouraged him in his development of the cement gun. During his fifth expedition to Africa, he contracted a virus and died on November 17, 1926. References 1. Teichert, P., “Carl Akeley—A Tribute to the Founder of Shotcrete,” Shotcrete, V. 4, No. 3, Summer 2002, pp. 10-12. Past Akeley Award Recipients • 2006—Jean François Dufour, “State-of-the-Art Specification for Shotcrete Rehabilitation Projects” • 2007—Knut F. Garshol, “Watertight Permanent Shotcrete Linings in Tunneling and Underground Construction” • 2008—E. Stefan Bernard, “Embrittlement of Fiber-Reinforced Shotcrete” • 2009—Dufour, Lacroix, Morin, and Reny, “The Effects of Liquid Corrosion Inhibitor in Air- Entrained Dry-Mix Shotcrete” • 2010—Lihe (John) Zhang, “Is Shotcrete Sustainable?” • 2011—Charles S. Hanskat, “Shotcrete Testing— Who, Why, When, and How” • 2012—R. Curtis White Jr., “Pineda Causeway Bridge Rehabilitation” • 2013—Jolin, Nokken, and Sawoszczuk, “Sustainable Shotcrete Using Blast-Furnace Slag” • 2014—Dr. Lihe (John) Zhang, “Variability of Compressive Strength of Shotcrete in a Tunnel- Lining Project” Carl E. Akeley Ezgi Yurdakul Klaus-Alexander Rieder 2015 ASA President’s Award The ASA President’s Award was established in 2005 to recognize the person or organization that has made exceptional contributions to the shotcrete industry. It is the sole responsibility of the current ASA President to select the recipient of this award. Since 2006, eight well-deserving individuals and one organization were awarded the ASA President’s Award, all of whom dedicated their time and energy to advance the shotcrete industry. For 2015, outgoing President Marcus H. von der Hofen presented the ASA President’s Award to Patrick Bridger for his outstanding service to ASA and the shotcrete industry. Bridger has provided untold hours of his personal time and effort to advance our shotcrete industry through ASA programs. Bridger’s leadership and commitment to ASA is exemplified by his always volunteering to help. He Patrick Bridger is a Past President, currently serves on the Board of Directors, co-chairs the Membership Committee, serves on numerous committees, and has written a number of articles for Shotcrete magazine. Bridger is a wealth of knowledge about shotcrete equipment, materials, and practices, as well as the variety of ASA activities through the years, and to the benefit to our Association and the industry, he is always willing to share that knowledge. Bridger’s network of contacts in the shotcrete industry stretch around the globe. It is rare to find someone active in the industry who doesn’t know and respect him. ASA and indeed the entire shotcrete industry is indebted to Bridger for his selfless and tireless efforts to raise the bar for promoting quality shotcrete and helping others, both inside or outside of ASA, to achieve our ASA vision and mission to the betterment of our industry. 40 Shotcrete • Winter 2016


2016WinterShotcreteEMag
To see the actual publication please follow the link above