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Dynamic Viscoelastic Characterization of Bitumen/Polymer Roofing Membranes
Author(s) -
Goikoetxeaundia Goretti,
González Oscar,
Muñoz María Eugenia,
Peña Juan José,
Santamaría Anton
Publication year - 2007
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200700022
Subject(s) - materials science , asphalt , polymer , viscoelasticity , phase inversion , composite material , membrane , waterproofing , dynamic modulus , elastic modulus , dynamic mechanical analysis , genetics , biology
Dynamic viscoelastic functions of bitumen/polymer waterproofing membranes are investigated. Analyses of the effect of polymer concentration on the height of the loss tangent peak observed around 20 °C reveals the existence of a continuous polymer phase. The variation of the elastic modulus and the loss modulus with frequency leads to define a Relaxation Spectrum Index which is used to determine the polymer concentration for the phase inversion. This is related to the Spanish UNE 104281 technical norm on bitumen/polymer blends for roofing. The results of the elastic modulus as a function of temperature and frequency were employed to evaluate the bonding capacity of the membranes to the roof surface. New perspectives on the characterization of bitumen/polymer membranes, similar to the Strategic Highway Research Program (SHRP) used in road pavement, are open.