GRANT, Mich. & SAN ANTONIO - May 14, 2019 - s4story -- The North East Independent School District (NEISD), San Antonio, Texas, used Porous Pave XL to install ADA-compliant walking tracks at 44 elementary schools. Made in the U.S.A., Porous Pave XL is a highly porous and durable paving material made with 50 percent recycled rubber chips and 50 percent aggregate mixed on site with a liquid binder. The 9-feet-wide, 675-feet-long, walking tracks provide an outdoor recreation resource for the schools and nearby neighborhoods.

"The project required a surface with superior flexibility so that serviceability cracks, caused by horizontal or vertical movements of the underlying soils due to expansion and contraction, would not create issues," said Jorge Cabello, senior director, construction management, NEISD. "In addition, we needed a workable and proven material that we could use both to construct new walking tracks and to overlay existing asphalt tracks which had excessive 'alligator' cracking."

"Porous Pave was a good solution for paving the new tracks and refurbishing the older ones. The recycled rubber makes it flexible enough to expand and contract without cracking," said Dave Frazier, engineering sales manager, GeoSolutions, Inc., a regional leader in ground stabilization, earth retention and erosion control and distributor for Porous Pave. "The rubber chips also make it non-slip, and since the material creates a paved surface with 27 percent porosity, the new walking tracks drain quickly, leaving no puddles after it rains."

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R.L. Rohde General Contracting, Inc., Adkins, Texas, and Jerdon Enterprise, L.P., Stafford, Texas, were the primary contractors on the two-year paving project. "All contractors bidding on the project were required to attend an on-site training class and get certified as an installer," said Randy Rohde, project manager for R.L. Rohde. "This was our first time using Porous Pave. Once we figured out how to scale up the installation process, we could install each track in a day."

The 37 new walking tracks have a two-inch Porous Pave surface paved atop a six-inch base of #57 crushed stone with an underlying geogrid system installed over the substrate. Drainage is provided by strip drains with four-inch PVC pipe. The tracks feature integrated six-inch header curbs and accessible connecting pathways. As a pour-in-place paving material, Porous Pave easily conformed to the curves the contractors established in the tracks with bendable form boards. To repair the seven previously installed asphalt tracks that had developed severe cracking, the contractors poured a two-inch top coat of Porous Pave over the old asphalt.

North East Independent School District

The North East Independent School District (NEISD) is the second largest school district in San Antonio, Texas. The District has 9,000 employees, including 4,338 teachers. The District has 46 elementary schools, 14 middle schools and 7 high schools. NEISD educates a student population of approximately 65,000 students. In 2018, 83 percent of the District's 4,844 high school graduates went on to enroll in two- and four-year colleges. For more information, visit www.neisd.net.

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Porous Pave Permeable Pavement

Porous Pave is a highly porous, durable and flexible paving material consisting of chips of recycled rubber, aggregate and a liquid binding agent. An eco-friendly green building product made in the U.S.A. by Porous Pave, Inc. (Grant, Mich.), Porous Pave is a pour-in-place permeable paving material with 27 percent void space and superior permeability for stormwater retention. It offers exceptional versatility for a wide variety of applications — including sidewalks and walkways, courtyards and patios, pool decks, tree surrounds, trails and cart paths, and golf course bunker liners. Its durability has been proven for more than a decade in installations across North America. For additional information, technical data, and examples of successful applications, visit www.porouspaveinc.com.

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