Abstract
Torching is one of the most used application methods for bituminous roofing felts. The heat/energy that is partly stored in the coating compound leads to a temporary softening, which in case of excessive working traffice may lead to aesthetical surface effects. The resistance of a compound to withstand such working traffic is often referred to as the walk on ability which is currenlty ranked by the penetration value at 50C. In this study, the validity of the penetration at 50C as the single criterion to judge walk on ability has been investigated. This paper describes the evaluations of the rheological behaviour of SBS bituminous compounds under stress at moderately elevated temperatuers, i.e., penetration, indentation and recovery and creep tests. The loading conditions have been chosen such that a realistic comparison could be made with the actual load exerted upon the roof by an average person.
Torching is one of the most used application methods for bituminous roofing felts. The heat/energy that is partly stored in the coating compound leads to a temporary softening, which in case of excessive working traffice may lead to aesthetical surface effects. The resistance of a compound to withstand such working traffic is often referred to as the walk on ability which is currenlty ranked by the penetration value at 50C. In this study, the validity of the penetration at 50C as the single criterion to judge walk on ability has been investigated. This paper describes the evaluations of the rheological behaviour of SBS bituminous compounds under stress at moderately elevated temperatuers, i.e., penetration, indentation and recovery and creep tests. The loading conditions have been chosen such that a realistic comparison could be made with the actual load exerted upon the roof by an average person.
Date
10/2000
10/2000
Author(s)
E Trommelen; G Heimerikx
E Trommelen; G Heimerikx
Page(s)
306-324
306-324
Keyword(s)
roofing; SBS; modfieid bitumen; walk on ability; working traffic; foot traffic; indention; creep
roofing; SBS; modfieid bitumen; walk on ability; working traffic; foot traffic; indention; creep