Equipment World Digital Magazine
Issue link: http://read.dmtmag.com/i/489028
demolished pavements incorporat- ing high-quality original materials. Light-emitting concrete Concrete pavements can emit light, with important safety benefi ts, ac- cording to a provocative new TRB paper. 5 The researchers developed a soy-based luminescent "glow in the dark" (GITD) sealant for use on concrete surfaces. The luminescent sealant is a mixture of soy methyl ester polystyrene (SME-PS) and strontium aluminate; a phosphores- cent powder that slowly luminesc- es after being excited by light. The sealant that could be ap- plied to the surface of concrete has important safety benefi ts, in addition to creating a more durable pavement, the authors say. "GITD concrete sealant could be used to seal concrete for increased service life, to supplement streetlights, and to increase the safety of the travel- ing public at night," they say. "If successful, the GITD sealant could be used to improve safety in con- struction zones or possibly replace streetlights in certain applications." As GITD powder derives its lu- minescent qualities from sunlight, it's more efficient than street- lights, which send light in all di- rections and draw approximately 2.3 percent of global electricity consumption. Safety of roadways would be increased by using a glow in the dark sealant as drivers will be able to see the road, its edges, or critical features more clearly, the authors write. "Roads, pedestrian trails, construction barrier walls, bridge piers, provide just some of the other potential applications for a GITD sealant," they say. "Using a luminescent concrete sealant, one achieves a reduc- tion of energy consumption by reducing or replacing streetlights, placing light where it is needed, sealing the concrete for a more durable pavement, and increased safety for the public." EquipmentWorld.com | April 2015 69 5 Assessing the Performance of Glow in the Dark Concrete, by Andrew Wiese, Taylor Washing- ton, Dr. Bernard Tao and Dr. Jason Weiss, Purdue University. High maInTENAnCE is sO not his tYpe. It ' s not ours either. is sO not his tYpe. s not ours either. He accepts that some jobsite problems are out of his control. And he deals with those. But when he invests in equipment, he expects it to work—without constant maintenance or repairs. So he chooses Gorman-Rupp construction pumps. These tough pumps move water even in the harshest conditions. And they require only minimal, simple maintenance that can be completed in the field with common hand tools. Even when everything else at work is an issue, his pumps just keep getting their job done. GORMAN-RUPP CONSTRUCTION PUMPS ARE BUILT TO OUTLAST AND OUTPERFORM THE COMPETITION. JUST LIKE HE IS. 520 © Copyright, The Gorman-Rupp Company, 2015 Gorman-Rupp – Mansfield Division is an ISO 9001:2008 and an ISO 14001:2004 Registered Company GORMAN-RUPP PUMPS | P.O. BOX 1217 | MANSFIELD, OHIO 44901-1217 | USA | 419.755.1011 | GRSALES@GORMANRUPP.COM | GRPUMPS.COM