Neutron radiography of heated high-performance mortar
1 Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
2 Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
3 Institute for Building Materials (IfB), ETH, 8093 Zurich, Switzerland
Neutron radiography was applied to investigate the water distribution in mortar samples heated from one side to 600 °C. In mortar, aggregates and anhydrous cement are almost transparent to neutrons, while hydration products and water-filled capillary pores bear the largest attenuation. The evolution of the moisture profile shows a sharp dehydration front and accumulation of water due to condensation of water vapor behind this front.
© Owned by the authors, published by EDP Sciences, 2013
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