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Abstract
An important cause of waterproofing failure in membrane waterproofing systems is the total rupture of the membrane as a consequence of movement in the substrate to which the membrane is bonded. The paper deals with research into the mechanical behavior of membrane systems composed of one or more layers of superimposed bituminous or other sheetings fully bonded together and to the substrate to form an integral waterproofing membrane system. A theory is advanced which permits membrane strains to be calculated for any practical substrate movement as a function of the mechanical properties and dimensions of the constituent materials. Allowance for the visco-elastic effects of bitumen is necessary in most cases. The theory embraces both fully and partially bonded membrane systems. The theory has proved capable of predicting observable effects and of anticipating failure by rupture of membrane with sufficient accuracy for most practical purposes. The theory is applied to the disucssion of a number of cases of practical interst, with particular reference to the ways and means of improving the movement capability of systems by means of system changes or sheeting improvements.
An important cause of waterproofing failure in membrane waterproofing systems is the total rupture of the membrane as a consequence of movement in the substrate to which the membrane is bonded. The paper deals with research into the mechanical behavior of membrane systems composed of one or more layers of superimposed bituminous or other sheetings fully bonded together and to the substrate to form an integral waterproofing membrane system. A theory is advanced which permits membrane strains to be calculated for any practical substrate movement as a function of the mechanical properties and dimensions of the constituent materials. Allowance for the visco-elastic effects of bitumen is necessary in most cases. The theory embraces both fully and partially bonded membrane systems. The theory has proved capable of predicting observable effects and of anticipating failure by rupture of membrane with sufficient accuracy for most practical purposes. The theory is applied to the disucssion of a number of cases of practical interst, with particular reference to the ways and means of improving the movement capability of systems by means of system changes or sheeting improvements.
Date
9/1974
9/1974
Author(s)
Bonafont, R
Bonafont, R
Page(s)
Paper 9
Paper 9
Source
Society of Chemical Industry
Society of Chemical Industry
Keyword(s)
waterproofing membrane; mechanical behavior; rupture; movement;
waterproofing membrane; mechanical behavior; rupture; movement;