Concrete inFocus - Spring 2014 - (Page 14)

sustainability Fuel Saving Tips NRMCA committee members speak out W e asked the members of NRMCA's Operations, Environmental and Safety Committee about their best advice for saving on fuel and increasing efficiency with truck mixers. Here are some of their responses. We would like to thank all of the producer members who contributed to this story as well as the following members of the NRMCA Manufacturers, Products and Services Division: Command Alkon, Mack Truck, Marcotte Systems Ltd., and Verifi LLC. CALIFORNIA: LIMITING IDLING EQUIPMENT Pursuant to our environmental best management practices and our fuel reduction goals as well as state law, we don't let our mobile equipment stay idle for more than five minutes unless absolutely necessary. Acceptable reasons for idling include: * Equipment is queuing * Verifying that equipment is in safe operating condition * Testing, servicing, repairing or performing diagnostic tests * Necessary to accomplish work for which the equipment was designed * Required to bring the equipment to safe operating temperature * Necessary to ensure safe operation of the equipment NORTH CAROLINA: IDLING DURING MIXER LOADING In looking at when a mixer is loading, where is the breaking point to where we can idle back the engine and still get full charge of the mixer? Everyone thinks that the truck engine has to be at full RPM at this time. I think this will increase our fuel savings and save on wear on the engine. Someone I am sure has already done this, but I am taking a shot at it! 14 ı SPRING 2014 CALIFORNIA: CONTROLLING MIXING SPEED One of largest impacts we have had on reducing fuel cost is controlling mixing speed. We implemented Verifi in Q3 of 2013 and have already seen a 21 percent reduction it total drum revolutions. If 22 percent of fuel cost are related to mixing, this is a very dramatic savings and we are seeing the results. ARKANSAS: BETTER MONITORING Monitoring fuel consumption and tire air pressure, and maximizing load efficiency. We do not give this the priority needed but are working in that direction. SOUTH DAKOTA: DIALING IN ON WATER MANAGEMENT We do some of the things many people do, like training our people to shut off their trucks if they are going to be waiting to load for more than a few minutes. But one that maybe not everybody thinks of is in the batching process. When we are loading trucks at a dry batch plant, we try to make sure that we use the correct amount of water. Of course, when you start a new day batch, you normally try to aim a little low so you don't blow the slump out the top. But if you have to add water several times after the initial batch to get the correct slump, every time you mix you are burning more fuel. So head packing, or even just guessing wrong on water addition, leads to additional mixing at full revs and so much more fuel consumption. Correctly determining the right amount of water can save a lot of fuel. This is something our field reps and Q/C people work on as well. OKLAHOMA: A FEW TIPS * * * * * * Reduce speed parameters in ECM Set idle time parameters in ECM Proper tire inflation Set progressive shifting parameters in ECM Train drivers with automatics to use economy mode Keep fuel storage tanks as clean as possible of microbial growth and moisture contamination * Keep truck engine tuned and properly maintained for maximum fuel efficiency

Table of Contents for the Digital Edition of Concrete inFocus - Spring 2014

Emergence of Compressed Natural Gas
MMC Materials Converts to Compressed Natural Gas
Fuel Saving Tips from Coast to Coast
Responsible Sourcing for Concrete
NRMCA Services and Tools
Index of Advertisers
Corporate Suite
Concrete Mixer Trucks and the Environment: Get the Connection?
Pavement Roughness and Fuel Consumption
CEMEX ‘Job-Safe’ Program Wins NRMCA 2013 Innovation in Training Award

Concrete inFocus - Spring 2014

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