Calibrating Your Zim-Mixer
March 2, 2010

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Due to the logistics and LEED (Leadership in Energy and Environmental Design) project demands, the Zim-Mixer® volumetric concrete was the ideal solution for the concrete delivery on this Liberty Island project, home to the Statue of Liberty.  This construction project involved enhancing and adding to the existing Visitor’s Center.

The featured equipment at the Liberty Island project is manufactured by Zimmerman Industries and is their signature Model ZM-409SP Zim-Mixer®, 9 cubic yard capacity, producing 30 cubic yards per hour.  For Zim-Mixer® owner John Bernal of All County Mobile Mix, Yonkers, New York, there were many obstacles to overcome.  John had to arrive at the dock fully loaded by 6:00 a.m. and take his unit onto a barge for a 30 minute cruise to the site.  The job had to end by 9:45 a.m. every day so that the visitors to the Statue of Liberty monument would not be kept waiting.  The amount of concrete varied from 3 to 6 cubic yards per day. Being able to mix on site and keeping the concrete fresh was imperative. With John’s expertise and the capabilities of the Zim-Mixer® volumetric mixer, the contractor’s demands were met.

This project was interesting in many areas, since it was a green project. A special blended cement that contained a 40% ground granulated blast furnace slag and a 4000 PSI mix design was needed to meet specifications.  The test results exceeded specifications, breaking in 7 days at 5400 PSI. Lastly, since Liberty Island is a mere 12 acres in size, it was essential that there was little or no waste from the concrete. The Zim-Mixer® delivered the precise quantity required with no waste, making it a perfect fit for this Liberty Island project.

Zimmerman Industries is pleased to announce that the 2010 Volumetric  Mixer Operators School will be held March 2nd  , 3rd  and 4th  in Ephrata, PA.  This year’s class will be the 10th at our corporate location, and 12th class held overall.  

Our class has taught more than 300 individuals the basic skills and understanding necessary to be a successful volumetric mixer operator or owner.  Our graduates have come from all over the world, and include engineers, consultants, retailers, pre-casters, dispatchers, contractors and municipal representatives.
 
In addition to teaching the operation of a volumetric mixer, we cover the production of quality concrete, basics of concrete mix designs, use of admixtures and alternative cementitious materials.  Also, during this class we will instruct the participants on the calibration process, produce concrete and demonstrate tests for fresh concrete with ACI certified personnel.  We offer two tracks of training, one for those involved in the hands on operation of a volumetric mixer, and a second for those more involved in the business aspect of the volumetric industry.
    
Our instructional staff includes professionals within cement industry, including , admixture producers, successful owners,  ACI certified field and production personnel, ASTM members, and National Ready Mixed Concrete Association (NRMCA).
Since 2007 our class has been accepted as a part of the NRMCA’s educational program, and can be used towards obtaining the Concrete Professional Certification.

For more information, please contact Laszlo Szabo, Operations Manager at Zimmerman Industries, Inc.  
This e-mail address is being protected from spambots. You need JavaScript enabled to view it or (717) 733-6166

Download the registration form here.

Cold Weather Maintenance
November 23, 2009

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The last few years have shown an increase in the usage of Latex Modified Concrete.  This product is typically used as an overlay on bridge decks, and parking garages.  The product enables the concrete to resist water, and more importantly any salts or chemical deicing agents, from infiltrating the deck and causing damage to the reinforcing steel and structural members below.  This product is best delivered by a Volumetric Mixer due to the unique characteristics and consistency requirements.  Zimmerman Industries has been in the forefront of this industry since the early 1980’s, and continues to be the leader today.

Since 2008, we have delivered Zimmerman Latex Volumetric Mixers to both small and large contractors.  Some of these provide the Latex Modified Concrete to other contractors, and others produce the material for their own placement crews.  This summer Zimmerman Industries delivered four Latex Modified Volumetric Mixers to one of the most well respected contractors in the area, Trumbull Corporation of West Mifflin, PA.  Trumbull Corporation, along with P.J.Dick and Lindy Paving, are a closely linked family of companies that brings innovative solutions, dedicated professional personnel, a legacy of quality and safety, and more than 50 years of construction experience to the table.  Trumbull Corporation has been a major contributor to the local Pittsburgh and regional construction marker since it’s inception in 1955.  Although they are headquartered in Pittsburgh, they operate a regional office in West Virginia, and establish project control centers wherever they have large construction projects.  Among the dozens of awards that are displayed in their offices, Trumbull Corporation was recently given the Bridge Award of Excellence for their work on the Woodrow Wilson Memorial Bridge over the Potomac River in Washington, DC.

Zim Mixer Updates
September 16, 2009

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