Concrete Products

SEP 2017

Concrete Products covers the issues that attract producers of ready mixed and manufactured concrete focusing on equipment and material technology, market development and management topics.

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36 • September 2017 COVER STORY PRECAST/PRESTRESSED SOLID RETURNS The list of benefits NPP derived from the capital investments over the past 24 months is long. When it comes to its new batch plant, highlights include: • Reclaimed approximately 3,000 square feet of critical crane bay space, enabling the producer to cast 6,000 prestressed deck panels for the Goethals Bridge contract. • Achieving high early strength sooner, thanks to the new batching system's increased energy and accuracy. "Usually two to four hours sooner," Dennis Fink observes. "We achieve from 9,500 to 13,000 psi within 24 hours in most cases. That level of early strength gives us the extra time we need for the complex set-ups and still allows us to maintain our 24-hour production cycle." • Greater production output. The ACT MobilMat Mo4500 batching system has cut NPP's mix cycle time from 10 minutes to about five per batch. "What used to take us 10-12 hours, we can now do in eight," Tom Koons affirms. "We can produce more product every day." NPP output has increased by 10,000 additional yards of con- crete per year over the past five years. • Increased production flexibility. • Reduced overtime. NPP's batch plant features an automated clea- nout system that reduces manual mixer cleanup and maintenance requirements. The company is saving more than $20,000 per year in labor tied to mixer cleanup. • Improved accuracy and consistency. The new batch plant's com- puter control system enables NPP to consistently produce high performance mixes, including SCC. The control system automatically measures and compensates for moisture, keeps detailed records of every batch, provides maintenance reminders, tracks inventory and automates reordering. NPP's 80,000-sq.-ft. production facility has shouldered fabrication of prestressed bulb-Ts up to 178 ft. long for the Goethals Bridge contract, along with more conventional beams for P3 projects throughout Pennsylvania. Installation of a new batch plant immediately outside the facility freed up critical production space and cut in half the time required for casting crews to receive 4-yd. mix loads. PHOTOS: Advanced Concrete Technologies

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