DETERIORATION DIAGNOSIS TECHNIQUE OF POLYMER CEMENT WATERPROOFING MEMBRANES BY DIFFERENCE IN THERMAL CHARACTERISTICS OF CONSTITUENT MATERIALS USING ACTIVE THERMOGRAPHY

Author(s): Masayuki Tsukagoshi (1), Hiroki Toyoda (1), Takao Ueda (1), Masashi Ishikawa (1)
Paper category: Proceedings
Book title: SynerCrete’18 International Conference on Interdisciplinary Approaches for Cement-based Materials and Structural Concrete
Editor(s): Miguel Azenha, Dirk Schlicke, Farid Benboudjema, Agnieszka Jędrzejewska
ISBN: 978-2-35158-202-2
e-ISBN: 978-2-35158-203-9
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 863-868
Total Pages: 6
Language : English

Abstract: An accelerated degradation test of polymer modified cement waterproofing membrane was carried out. The change in mechanical properties and gloss of the surface was measured. Polymer modified cement waterproofing membranes were prepared according to set polymer to cement ratio parameters, and then applied on concrete surface. These specimens were exposed to 3 types of accelerated deterioration conditions: light irradiation in a quantity of 18.2 W/m2 by UV lamp; ambient conditions of a temperature of 70 °C and 50 %R.H.; and 70 °C hot water. After exposure test, the surface of the test pieces were heated by a halogen lamp for about 20 seconds and cooled at room temperature. The temperature change during same period was observed with an infrared camera.
For all the test pieces exposed under deterioration conditions the elongation rate tended to gradually decrease as the exposure period increased and the tensile strength increased. And the surface temperature increased as P/C was higher. As the polymer deterioration progressed the lower the observed increases in temperature became. The decrease of the elongation rate due to degradation and the rate of increase in temperature showed a relatively good correlation, but the tensile strength varied greatly.

Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00