Induction hardening of thermoset modified bituminous materials

Conference paper (2018)

Authors

P. Apostolidis Pavement Engineering - CEG
X. Liu Pavement Engineering - CEG
Cor Kasbergen Pavement Engineering - CEG
C. Kasbergen Pavement Engineering - CEG
Martin van de Ven Pavement Engineering - CEG
Athanasios Scarpas Khalifa University of Science and Technology
Research Group
Pavement Engineering (CEG) (TU Delft)
Copyright: © 2018 P. Apostolidis, X. Liu, C. Kasbergen, Martin van de Ven, Athanasios Scarpas
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Published Date

2018

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Engineering Structures

Research Group

Pavement Engineering

Abstract

Induction assisted chemical hardening (curing) or induction hardening is a novel in situ hardening technique for thermoset modified bituminous materials that maintains most of the advantages of natural chemical hardening while eliminating the possible restrictions of longer curing times at lower temperatures. In particular, induction heating can be utilized to accelerate the polymerization of thermoset modified bituminous paving mixes in which inductive particles are added. In this study, steel fibres are dispersed in a thermoset bituminous system and during exposure to an alternating magnetic field, they are induction heated leading to a more rapid initiation of the polymerization. The non-isothermal hardening performance of fast reacting thermoset-bitumen is modelled during the thermoset crosslinking. The model can also be utilized to predict reaction kinetics and viscosity evolution in this material, thereby indicating that induction hardening represents a reliable polymerization method and can be utilized to cure thermoset bituminous materials.

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