Accession Number : ADA135276

Title :   Rubber Removal from Porous Friction Course.

Descriptive Note : Final rept.,


Personal Author(s) : Carpenter,S H ; Barenberg,E J

PDF Url : ADA135276

Report Date : Sep 1983

Pagination or Media Count : 52

Abstract : Rubber buildup on runways is a serious problem because it reduces friction on the runway. Where a porous friction course has been placed to improve frictional and drainage characteristics the problem of rubber buildup becomes even more serious because friction and water drainage both are lost. This report examines seriousness of the occurrence of rubber buildup on porous friction courses and the methods which have been utilized to remove the buildup. Some innovative techniques have been used to remove rubber from a PFC, however, most could not be evaluated because the surfaces had been replaced or resurfaced. Of all techniques, high pressure water blasting was felt to present the most promise for efficient rubber removal. Discussions with contractors pointed out the difficulties in planning and controlling the high pressure removal technique. A simple analysis was conducted to illustrate the effect variations in the operating parameters had on the work being done by the water. Careful control of these parameters will be required for their use on PFC surfaces where the potential for damage is high. (Author)

Descriptors :   *Runways, *Cleaning, Porous materials, Asphalt, Rubber coatings, Accumulation, Removal, Water jets, High pressure

Subject Categories : Terminal Flight Facilities

Distribution Statement : APPROVED FOR PUBLIC RELEASE