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The following are samples of projects where rotor pumps were successfully used: Metro de São Paulo, Brazil – Extension of Line 2, Lot 3 Shotcrete application: Ipiranga Station Approximate Volume: 10,000 yd3 (7600 m3) Equipment used: 2 Aliva 262, 1 Aliva 263 Contractor: Construtora Norberto Odebrecht DAEE – Underpass Castelo Branco Freeway, Brazil Shotcrete application: 1000 ft (300 m) tunnel with 16.5 ft (5 m) diameter Approximate Volume: 2000 yd3 (1500 m3) Equipment used: 1 Aliva 263 Contractor: DP Barros & Viatec Currently there are many more projects in construction with the use of rotor pumps. The decision was taken to work this way precisely because of their robustness, flexibility, and simple operation. of the pipes and hoses, resulting in more cement sion were the constantly changing quality of the in the mixture than is needed for structural concrete, repetitive interruptions of the supply of strength. The quantity of the fines, especially the the concrete due to traffic, and bad organization cement, can also be reduced. Rotor machines work at the jobsite. The decision to use a rotor machine well in a wide range of material up to plain aggre- was more than justified as Albau Construtora Ltda. gates without any additional lubrication with fines. had the possibility to suspend the shooting without Rotor machines are very durable, long-lasting major losses and less organizational hassles. pieces of equipment. It is not unusual to find 30-year-old equipment still in perfect working condition. As you can see, there are many argu- ments to start thinking about using rotor pumps Walter Betschart is an Area for your next shotcrete job. Sales Manager since 2005 with Two good examples for a successful use are Sika/Aliva Equipment. For the construction and extension projects in Brazil. As past 5 years, he has been head the conditions of the jobsite were not always very of the order processing depart- favorable, the subcontractor Albau Construtora ment. Betschart is currently sta - Ltda. decided to do the job with rotor machines tioned in Panama, responsible instead of pumps. The main reasons for this deci- for the Latin American Market. 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 28 Shotcrete • Fall 2015


2015FallShotcreteEMag
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