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Abstract
The resistance of bituminous built-up roofing membrane to thermally induced forces is considered in terms of their strength properties such as breaking load in tension, modulus of elongation and apparent linear thermal expansion coefficient. The development of a Thermal Shock Resistance Factor is described and values are given for three bituminous built-up membranes at temperatures of -30 F (-34.4 C), zero F (-17.8 C) and 73 F (22.9 C). The apparent relation between the values obtained in the laboratory and the observed performance of roofing membranes in service is considered. The utilization of the Thermal Shock Resistance Factor in the reduction of potential failures of bituminous built-up roofing membranes in service from thermally induced forces also is discussed.
The resistance of bituminous built-up roofing membrane to thermally induced forces is considered in terms of their strength properties such as breaking load in tension, modulus of elongation and apparent linear thermal expansion coefficient. The development of a Thermal Shock Resistance Factor is described and values are given for three bituminous built-up membranes at temperatures of -30 F (-34.4 C), zero F (-17.8 C) and 73 F (22.9 C). The apparent relation between the values obtained in the laboratory and the observed performance of roofing membranes in service is considered. The utilization of the Thermal Shock Resistance Factor in the reduction of potential failures of bituminous built-up roofing membranes in service from thermally induced forces also is discussed.
Date
1966
1966
Author(s)
Cullen, William; Boone, Thomas
Cullen, William; Boone, Thomas
Page(s)
20
20
Keyword(s)
development; roofing membrane; strength properties; thermal shock; thermally induced; resistance factor
development; roofing membrane; strength properties; thermal shock; thermally induced; resistance factor