Keeneland on Thursday unveiled a new dirt racing surface that was installed
this summer on its 1 1/16-mile main track. The dirt track is now open for
training and will be featured when racing resumes at Keeneland for the Fall
Meet, October 3-25.
The dirt surface, comprised of sand, silt and clay native to Kentucky,
features a unique drainage system designed to collect and discharge water
consistently away from the track.
“The new materials and advanced technology available to monitor consistency
and moisture content in the racing surface have enabled us to build a
world-class dirt track that will be as safe as possible for horse and rider,”
Keeneland President and CEO Bill Thomason said. “We are proud of the renovation
and excited to welcome owners and trainers back to Keeneland.”
Conversion of the main track from a synthetic Polytrack surface to a dirt
surface began May 19. Construction was completed on schedule in mid-August and
the track was turned over to the track maintenance crew for conditioning.
“This dirt track represents more than a year of study and testing with regard
to materials, water drainage and track maintenance, but our job is not done,”
Keeneland Vice President of Racing W.B. Rogers Beasley said. “We want to be part
of the national dialogue about track maintenance and safety. The data we
retrieve from our ongoing research will be an opportunity to move the industry
forward.”
Keeneland officials embarked on the project in earnest long before
construction began, assembling in June 2013 a team of experts who consulted with
Dr. Mick Peterson, executive director of the Racing Surfaces Testing Laboratory,
to develop the safest, most consistent racing surface possible.
“Keeneland has addressed the single most critical factor in both dirt and
turf track maintenance and design: moisture content,” Dr. Peterson said. “In
addition to a novel drainage system, Keeneland has committed to an ongoing study
of the way water is applied by the water truck, how the water evaporates from a
dirt racing surface and the maintenance response to rain. By committing to
understanding the single biggest variable in dirt race track design and
maintenance, Keeneland is not only providing a superior racing surface but also
supplying technology that can be used throughout the industry.”
During the winter of 2013 and into early spring of 2014, Keeneland, together
with Dr. Nancy Cox, dean of the University of Kentucky’s College of Agriculture;
Dr. Ole Wendroth, professor of plant and soil sciences; and Robert Brashear,
assistant dean for facilities management, developed a test site on the
univeristy’s North Farm near Lexington. The site, which measured 20 feet x 120
feet, was created to simulate a section of dirt track, allowing experts to
experiment with materials, water drainage, slope and grade.
Construction of the dirt track got underway in mid-May when workers began
removing 16,000 tons of Polytrack to reach the existing layer of porous asphalt
that covers a complex drainage system installed during the 2006 track
renovation.
The porous asphalt was then covered by Mirafi 140N geotextile fabric, which
maintains the integrity of the 26,000 tons of Class I sand placed on top of it
to form the base of the track.
The dirt track features a unique drainage system, the first of its kind in
North America, along the inside and outside rails that works in tandem with the
existing system beneath the track.
Under the inside rail and along the outer rail through the straights and
chutes, interlocking EcoRain drainage cells filled with pea gravel were stacked
horizontally and covered by a flexible porous paving material made from recycled
tires. This system is designed to consistently collect and discharge water into
the existing drainage system and away from the track surface.
A blend of approximately 19,000 tons of sand, silt and clay native to
Kentucky forms the main track’s six-inch racing surface. The surface composition
consists of approximately 87.5 percent sand and 12.5 percent clay and silt.
Keeneland will employ GPS technology via custom-made equipment to carefully
monitor the consistency of the dirt racing surface. The data gained will be an
invaluable tool in outlining proper maintenance, which is a key to making the
track as safe as possible for horse and rider.
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