Page 26

2014SprShotcreteEMag

Shotcrete Corner In addition, the following tests are frequently • STADIUM Ionic Migration test. used on shotcrete projects: • STADIUM Drying test: flexural toughness for • ASTM C138/C138M-13a, “Standard Test fiber reinforced shotcrete Method for Density (Unit Weight), Yield, and • RILEM TC-162 TDF Air Content (Gravimetric) of Concrete”: Plastic density. References • ASTM C143 / C143M-12, “Standard Test 1. Hanskat, C., “Shotcrete Testing—Who, Why, When and Method for Slump of Hydraulic-Cement How,” Shotcrete, V. 13, No. 3, Summer 2011, pp. 8-12. Concrete”: Wet-mix shotcrete only. Shotcrete, V. 15, No. 3, Summer 2013, pp. 44-46.2. Hanskat, C., “US Shotcrete Standards Update,” • ASTM C231/C231M-10, “Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method”: At pump and as shot. • ASTM C1604/C1604M-05(2012), “Standard Test Method for Obtaining and Testing Drilled Lars Balck is a Senior Vice Cores of Shotcrete”: Compressive strength at President of The Crom Cor- 7 and 28 Days. poration, a company that spe- Hardened Shotcrete Properties cializes in the design and • ASTM C642-13, “Standard Test Method for construction of prestressed Density, Absorption, and Voids in Hardened concrete tanks using shotcrete Concrete”: Boiled absorption and volume of for the wall construction. He permeable voids at 28 days. has been involved in the design • ASTM C1202-12, “Standard Test Method for and construction of over 550 tanks over the past Electrical Indication of Concrete’s Ability to 40 years. He received his bachelor’s degree in Resist Chloride Ion Penetration”: Rapid civil engineering from the University of Florida chloride penetrability testing. and served with U.S. Army as First Lieutenant in • ASTM C1556-11a, “Standard Test Method for Vietnam as a Combat Engineer. Balck is a Past Determining the Apparent Chloride Diffusion President of ASA. He is Chair of ACI Committee Coefficient of Cementitious Mixtures by Bulk 506-C, Shotcreting-Guide; a past Chair and Diffusion”: Apparent chloride diffusion (chlo- current member of ACI Committee 506, Shot- ride ponding) testing. creting; and member of ACI Committees 376, • ASTM C1585-13, “Standard Test Method for Concrete Structures for Refrigerated Liquefied Measurement of Rate of Absorption of Water Gas Containment; 563, Specifications for Repair by Hydraulic-Cement Concretes”: Rate of of Structural Concrete in Buildings; and C660, water absorption testing. Shotcrete Nozzleman Certification. Shotcrete Specifiers Education Tool, v2 The Shotcrete Specifiers Education Tool, version 2, is designed to provide specifiers with a better understanding of the shotcrete process and important components of a shotcrete specification. The content provided on this 4 gigabyte USB flash drive now includes: PowerPoint Presentations: Shotcrete for Repair and Rehabilitation of Concrete Structures and Shotcrete for Underground Construction Brochures: Sustainability of Shotcrete; Shotcrete, A Proven Process; and The History of Shotcrete by George Yoggy Video: Shotcrete Versatility Plus (World of Concrete Mega Demo) ASA Members: $25.00 each Nonmembers: $45.00 each To order, call ASA at (248) 848-3780 or visit www.shotcrete.org 24 Shotcrete • Spring 2014


2014SprShotcreteEMag
To see the actual publication please follow the link above