Pavement Preservation Journal - Spring 2012 - (Page 25)

Rejuvenating Treatment Preserves Runway, Grooving The city will continue to look at long-term scheduled rejuvenation to extend pavement life. Obispo. It was acquired by the city in 1973 and is currently under the direction of airport manager Roger Oxborrow. Its main runway 1-19 is 6,000 x 150 ft. Its maximum weight load is 150,000 lbs, which accommodates Lockheed C-130s and Boeing 737-type aircraft. The secondary runway is 4,700 x 150 ft. and can handle weights up to 60,000 lbs. In 1984 the runway received a 4-in. overlay that included 1 in. of open graded friction course. With no pavement preservation applied to this surface, it began to ravel and required the airport to constantly sweep it for the last several years of its life. This surface was then overlaid in 2001 with a 4-in. mat of similar OGFC design. A goal of the FAA funding was to preserve the runway and provide life extension. The city consulted with John Smith of Tartaglia Engineering, Atascadero, Calif., to design and prepare the bid. The successful contractor was Cal Portland Construction, Santa Maria, Calif. In November 2011, in advance of the rejuvenator, longitudinal cracks between paving passes were routed At Paso Robles Airport, unsealed grooved asphalt was crack-sealed prior to rejuvenator application L ate last year a city-owned airport in California preserved its runway pavements by using a rejuvenating process that also preserved the essential runway grooving. The city-owned municipal airport of Paso Robles, Calif. — nestled in the Coastal Ranges midway between Los Angeles and San Francisco — has seen increased traffic as the popularity of its surrounding wine country grows. In addition to booming aviation-driven wine tourism, both the California Highway Patrol and California Department of Forestry maintain bases and aircraft there. With that kind of air traffic to deal with, late last year Paso Robles undertook a runway pavement preservation program to keep the airfield in top shape for the years to come, but needed to use a rejuvenator that would not clog the functioning grooves in the runway. KEEP GROOVES CLEAR Paso Robles Municipal Airport received Federal Aviation Administration funding for miscellaneous ground work that also included an airfield crack sealing application and surface treatment application. The major concern in choosing a pavement seal was the fact that the runway features a grooved asphalt surface, so it was imperative the surface voids were not plugged with asphalt or filler. The Paso Robles airport was constructed in 1943 by the U.S. wartime government as the Estrella Army Airfield. After World War ll ended, under the War Surplus Act of 1949, the airport was transferred to the County of San Luis PHOTO CREDIT: Tricor Refining Asphalt pavement rejuvenator is applied to runway by Western Oil Spreading Services Spring 2012 pavement preservation journal 25

Table of Contents for the Digital Edition of Pavement Preservation Journal - Spring 2012

President’s Message
National Preservation Conference: Make Plans Now
Pavement Preservation is ‘Sustainable’ Choice
Deck Micro Surfacing Cuts Accidents, Wins Award
Enhanced Fog Seals Boost Chip Retention
Sophisticated ‘Seal Coats’ Enhance Texas DOT Pavement Preservation
Rejuvenating Treatment Preserves Runway, Grooving
Fine-Mill Pavements for Smooth Thin Overlays
Puerto Rico, Southeast States Focus on Preservation
Maryland Identifies Right Fix for Right Road, Right Time
‘Thin is In’ for New Texas Center Courses
Why to Cut Back on Cutback Asphalt
Test Sections Constructed at Virginia Smart Road
Ground Penetrating Radar Fills Gaps in PMS

Pavement Preservation Journal - Spring 2012