c hemicals & d etergents or w ater ? c hemicals & d etergents or w ater ? all photographs...
TRANSCRIPT
RUNWAY RUBBER REMOVAL
CHEMICALS & DETERGENTS OR
WATER?
All photographs and representations of chemical processes used in this presentation are in the public domain and were retrieved primarily from www.hurrisafe.com or www.avion50.com
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2
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Created by constant take-off and touch-
downs
Severe traction quality reduction
Extremely hazardous in damp or wet conditions
THE PROBLEMRUNWAY RUBBER
BUILD-UP
WHICH RUNWAY CLEANING METHOD REMOVES RUBBER, GREASE, OILS & JET
FUEL BUILDUP: the most effectively? the quickest? the most cost effectively? the safest for personnel? the least amount of
damage to the runway surface?
CHEMICALS & DETERGENTS
WATER
THE QUESTION
Requires a 7-step process:
1.Preparation2.Application3.Penetration/
Emulsification4.Scrubbing5.Rinsing6.Vacuuming/ Disposal7.Clean-Up
OPTION .CHEMICALS & DETERGENTS
A
OPTION .CHEMICALS & DETERGENTS
STEP 1: Preparation Assemble all necessary
equipment on runway Sweep runway (clear all
debris) Spray runway surface to
reduce evaporation Brush surface with snow
broom to score rubber prior to application
A
OPTION .CHEMICALS & DETERGENTS
STEP 2: Application Run applicator truck
with sprayjets at 50 PSI [4 bar]
Completely saturate runway surface with chemical solution
Brush surface with steel brush to work chemicals into rubber
A
OPTION .CHEMICALS & DETERGENTS
STEP 3: Penetration Allow the chemicals
or detergent to stand on rubber surface
Wait for the rubber to fully dissolve and emulsify with the chemicals or detergent
A
OPTION .CHEMICALS & DETERGENTS
STEP 4: Scrubbing After rubber is
dissolved, scrub runway surface with either brushes or water at high volume & low PSI (max 20,000 PSI [1,400 bar])
A
OPTION .CHEMICALS & DETERGENTS
STEP 5: Rinsing Run water truck down
center of runway Follow with sweeper
truck to force water to edge of runway
Before water reaches soil or turf, sweep water back toward center
A
OPTION .CHEMICALS & DETERGENTS
STEP 6: Vacuuming Run vacuum truck
behind rinse trucks to sweep chemical solution & debris
Transfer used solution from vacuum holding tank to drums to await deposition by local sewer authority for disposal
A
OPTION .CHEMICALS & DETERGENTS
STEP 7: Clean-Up Use pressure washer
to completely clean overspray, splash-back, etc. of cleaner, dissolved rubber, and residue from all equipment to prevent corrosion, rust, etc.
A
ONE STEP One truck & one
operator Water ONLY All water & debris
simultaneously vacuum recovered
No run-off, no chemicals, no damage to runway or environment
OPTION .WATER
(HYDROBLASTING)
B
DISPOSAL Water and debris
simultaneously recovered then separated
Water is filtered to 100μ and generally approved for dumping anywhere
Solid debris block created that is easily transported off-site for disposal
OPTION .WATER
(HYDROBLASTING)
B
OPTION BWATER
(HYDROBLASTING)
OPTION ACHEMICALS &
DETERGENTS
THE QUESTIONOPTION BOPTION A
7 steps, multiple trucks (4 minimum), and several operators
(4 minimum)Process
1 step, 1 truck, 1 operator. Of airports surveyed, over 75% said they would use waterblasting if they had the option
Multiple trucks, several operators, purchase/ storage/
disposal of expensive detergents. Cleanings are required 2-3x more often due to depth of
cleaning.
Cost1 truck that uses water only. No run-off, rinsing, or secondary truck operations.
Operator and environment exposed to chemicals & detergents from run-off.
Safety & Environme
nt
No risk for operator, runway or environment.
Must be closed for extended periods. Can not vacate for
emergency landings.
Runway Closure Can vacate runway in 30 seconds
Over time causes bitumen breakdown, polishing of
aggregate (reduced friction), grooved edge rounding and
weakening of runway structure
Runway Friction & Damage
All microtexture left intact if done properly by a trained operator. Friction values 25% (2 mu points) higher with waterblasting over chemicals/detergents
WATER (HYDROBLASTIN
G)
CHEMICALS & DETERGENTS
THE OBJECTIONQUESTION: “What about the criticism that waterblasting ‘polishes’ aggregate, reduces friction coefficients, and is so destructive that up to 80% of the debris is particles of aggregate or other material pertaining to the runway surface?”
ANSWER: First, we have interviewed every airport in North America with a passenger count in excess of 1 million passengers per year. Chemicals and detergents are quickly being phased out because of cost, quality and safety. In fact, less than 1/3 of all airports in North America still use chemicals and detergents because of the superiority of waterblasting on every significant area of
concern.
Second, in a compilation of reports received from airfield maintenance supervisors, the resultant Mu values are an average of two full points higher on a surface cleaned by waterblasting than one cleaned with chemicals or detergents. There is no process that even comes close to putting runways in “like new” condition as waterblasting. Contrast that with chemical cleaning where the process is often followed by waterblasting or shotblasting because over time the chemicals so lose their effectiveness they can no longer achieve requisite friction values.
Third, when a runway is
cleaned via waterblasting with a properly trained operator there is no destruction at all. To scientifically test this claim, an ISO-certified lab (Chemir Analytical Services, Maryland Hts, MO) performed a quantitative analysis of a debris sample from a field that had been waterblasted. The results: 87% of the debris was rubber. 13% was dust/dirt, jet fuel, and other unidentified particulates. Not even a trace of the debris was aggregate or material from the runway surface. Water-blasting, correctly performed, will not damage the surface by altering or polishing the shoulders of the grooves whether on concrete or asphalt.
THE EVIDENCE“The use of ultra high pressure water blasting for rubber removal eliminated an expenditure of approximately $36,000 annually… It also reduced the manpower required from four operators to one. Our friction Mu values increased an average of two points [25%] with water blasting as compared to chemical rubber removal. The [system] collects the rubber into the debris collection tank and it is disposes of into a dumpster as opposed to sweeping the debris into he grass bays adjacent to the runways or taxiways.”
Dennis McNameeHeavy Equipment
SupervisorPittsburgh International
Airport
“The [waterblasting] removal truck’s ability to remove runway rubber and existing surface painted markings, retrieve any debris and residue, and reclaim the water, while reducing pavement waiting time to paint make it an excellent piece of equipment. [Waterblasting] does not deteriorate the pavement or remove the grooving. If you want to remove airport rubber and paint within minutes, this is the asset to have!”
Richard L GoodAirfield Maintenance
SupervisorMcGhee Tyson AirportMetropolitan Knoxville
Airport Authority
“We used a [waterblasting truck] to do a TOTAL rubber removal as port of the renovation [of an 8,800 foot runway]. In the process (with our FAA inspector as a witness) we essentially brought the surface back to a ‘like new’ condition. I asked the Operations Manager when was the last time he saw this runway looking so good. He replied, without hesitation, ‘1984, when it was poured!’ Soon we will close the books and I intend to do a cost analysis. I strongly suspect when we back out labor alone we will find it cost us nothing!”
Tim SmithAirfield Maintenance
SuperintendentDallas Airport System
AIRPORT CUSTOMERSAN ABRIDGED LISTING OF WATERBLASTING
AIRPORT CUSTOMERS:
Central America Aguascalientes, Mexico Guadalajara, Mexico Guanajuato, Mexico Hermosillo, Mexico La Paz, Mexico Los Cabos, Mexico Puerto Vallarta, Mexico Tijuana, Mexico South America Buenos Aires, Argentina Sao Paulo Guarulhos Sao Paulo Congonhas
Europe Ankara, Turkey Brussels, Belgium Istanbul, Turkey London Heathrow London Gatwick
Manchester, UK Standsted, UK Prague, Czech Republic Stockholm, Sweden St. Petersburg, Russia Middle East Beirut, Lebanon Dubai, UAE Fujairah, UAE Muscat, Oman Tel Aviv, Israel Asia Kuala Lumpur, Malaysia Mumbai, India
Australia Adelaide Brisbane Melbourne Sydney
North America Andrews AFB, Virginia
Birmingham, Alabama Charlotte, South
Carolina Dallas, Texas Ft Lauderdale, Florida Jacksonville, Florida Juan Santamaria, Costa
Rica Knoxville, Tennessee Marine Corps AS,
Virginia Nellis AFB, Nevada Miami, Florida Orlando, Florida Palm Beach, Florida Pensacola, Florida Pittsburgh,
Pennsylvania Queen Beatrix, Aruba Rapid City, South
Dakota Savannah, Georgia Tampa, Florida Warner Robins AFB,
Georgia
RUNWAY RUBBER REMOVAL
CHEMICALS & DETERGENTS OR
WATER?
For more information please contact:W A T E R B L A S T I N G T E C H N O L O G I E S , I N C
3170 SE Slater Street | Stuart, FL 34997 USA (877) 964-7312 Toll-Free | (772) 223-5461 Fax
www.waterblastingtechnologies.com