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2015SpringShotcreteEMag

Shotcrete is a quarterly publication of the American Shotcrete Association. For information about this publication or about Volume 17, Number 2 membership in the American Shotcrete Association, please Spring 2015 contact ASA Headquarters at: American Shotcrete Association 38800 Country Club Dr., Farmington Hills, MI 48331 Phone: (248) 848-3780 • Fax: (248) 848-3740 Features E-mail: info@shotcrete.org Website: www.shotcrete.org 8 Durability and Exposure Conditions of To unsubscribe, please go to Cementitious Materials www.shotcrete.org/pages/products-services/e-remove.asp Deterioration Mechanisms By Jonathan E. Dongell 12 Durability Investigation of Ultra-Rapid Strength- Gain Dry-Mix Shotcrete By Nicolas Ginouse and William Clements 18 The Durability of Shotcrete—Looking Back at and do not necessarily represent the position of the editors or Projects from 30 to 40 Years Ago are those of the authorsShotcrete The opinions expressed in the American Shotcrete Association. By Ted Sofis Copyright © 2015 22 Testing Air Content of Dry-Mix Shotcrete Executive Director Charles S. Hanskat By Lihe (John) Zhang Advertising/Circulation Manager Alice L. McComas 26 Effect of Pozzolanic-Based Rheology Control Agent as a Replacement for Silica Fume Technical Editors Charles S. Hanskat and Marc Jolin on Wet-Mix Shotcrete Performance By Ezgi Yurdakul and Klaus-Alexander Rieder Editing Barry M. Bergin (Manager), Carl Bischof, Tiesha Elam, Kaitlyn J. Hinman, Kelli R. Slayden Departments Graphic Design Susan K. Esper, Ryan M. Jay, Aimee M. Kahaian, Gail L. Tatum 2 President’s Message — Marcus H. von der Hofen Publications Committee Ted Sofis (Chair), 4 Committee Chair Memo — Oscar Duckworth Patrick Bridger, Oscar Duckworth, Marc Jolin, 6 Staff Editorial — Charles S. Hanskat Dudley R. (Rusty) Morgan, Tom Norman, Ryan Poole, Raymond Schallom III, 32 Sustainability — Warren Harrison Marcus H. von der Hofen, Lihe (John) Zhang 34 Shotcrete Corner — Frank E. Townsend III 40 Goin’ Underground — Randle Emmrich ASA OFFICERS President Marcus H. von der Hofen 44 Nozzleman Knowledge — Mark Bradford Coastal Gunite Construction Co. 48 Technical Tip — Todd Ferguson Vice President Bill Drakeley Drakeley Industries 52 Pool & Recreational Shotcrete Corner — Bill Drakeley Secretary Scott Rand 54 ASA Graduate Student Scholarship King Shotcrete Solutions 2014-2015 Research Updates Treasurer Lihe (John) Zhang LZhang Consulting & Testing Ltd. 58 Association News Past President Michael P. Cotter 60 Industry News Shotcrete Hydrodemolition Consultant 65 Shotcrete Calendar ASA COMMITTEE CHAIRS 66 Safety Shooter — Derek and Amanda L. Pay Education Committee Oscar Duckworth Valley Concrete Services 69 New ASA Members Marketing Committee Joe Hutter King Shotcrete Solutions 70 Corporate Member Profile — Nationwide Shotcrete, Inc. Membership Committee Tom Norman 72 New Products & Processes Airplaco Equipment Co. 74 Shotcrete FAQs Pool & Recreational Bill Drakeley Shotcrete Committee Drakeley Industries 78 ASA Member Benefits Publications Committee Ted Sofis 79 ASA Membership Application Sofis Company, Inc. 80 Index of Advertisers Safety Committee Andrea Scott HydroArch Underground Committee Axel Nitschke On the cover: The Oregon City Arch Bridge—2013 Outstanding Repair & Gall Zeidler Consultants Rehabilitation Project, previously published in Shotcrete magazine, Winter 2014


2015SpringShotcreteEMag
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