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2013SprShotcreteEMag

New Products & Processes shotcrete and 3/4 in. (19 mm) struc- released. The scope of this updated docu- tural concrete mixtures. This pro- ment includes: vides a fast, efficient solution for 1.1 This test method covers the determi- contractors performing a variety of concrete and shotcrete nation of flexural toughness of fiber-rein- applications. The pump features variable speeds of 0 to 25 yd3 forced concrete expressed as energy (0 to 19 m3) per hour. Vertical pumping distance reaches 50 ft absorption in the post-crack range using a round panel supported (15 m) with the use of a rubber delivery line, whereas horizontal on three symmetrically arranged pivots and subjected to a central distance can reach up to 250 ft (76 m). point load. The performance of specimens tested by this method For 60 years, Blastcrete Equipment Company has been manu- is quantified in terms of the energy absorbed between the onset facturing solutions for the shotcrete industry. With a complete of loading and selected values of central deflection. product line consisting of concrete mixers, pumps, and related 1.2 This test method provides for the scaling of results when- products, Blastcrete Equipment Company is poised to meet the ever specimens do not comply with the target thickness and needs of commercial and residential construction, ICF and SCIP diameter, as long as dimensions do not fall outside of given limits. building systems, and refractory and underground markets. 1.3 The values stated in SI units are to be regarded as stan- For more information, call (800) 235-4867 or visit www. dard. No other units of measurement are included in this blastcrete.com. standard. 1.4 This standard does not purport to address all of the safety New ASTM C1550–12a Released concerns, if any, associated with its use. It is the responsibility An updated version of ASTM C1550-12a, “Standard Test of the user of this standard to establish appropriate safety and Method for Flexural Toughness of Fiber Reinforced Concrete health practices and determine the applicability of regulatory (Using Centrally Loaded Round Panel),” has recently been limitations prior to use. Shotcrete • Spring 2013 45


2013SprShotcreteEMag
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