A non-destructive test method for the performance of hydrophobic treatments

Author(s): U. Antons, J. Orlowsky, M. Raupach
Paper category: Conference
Book title: Concrete Repair, Rehabilitation and Retrofitting III (ICCRRR)
Editor(s): M.G. Alexander, H.-D. Beushausen, F. Dehn, P. Moyo
Print ISBN: 978-0-415-89952-9
Publisher: Taylor & Francis Group
Pages: 270- 271
Total Pages: 2
Language: English

Abstract: 
The efficiency and durability of hydrophobic treatments on concrete surfaces depend amongst others mainly on their penetration behaviour. Up to now the penetration depth of hydrophobic treatments applied on buildings can only be determined on drilled cores. The portable NMR-MOUSE® based on unilateral nuclear magnetic resonance spectroscopy now has been evaluated as tool for nondestructive performance tests. In this paper it’s shown that the time depending penetration and distribution of hydrophobic agents in concrete as well as the tracking of the degradation processes can be visualized with this measuring method. Consequently the results confirm different penetration depths of silanes with different length of the alkyls. In addition the temperature stability of the hydrophobic layer after 200°C exposure and the final destruction after 350°C exposure is presented.

Online publication: 2014
Publication Type: abstract_only
Public price (Euros): 0.00