Influences of temperature and opening rate of substrate cracks on the mechanical behaviour, crack–bridging ability and deformation mechanisms of one–component, cementitious, flexible waterproofing membranes

Waldvogel, Marius; Zurbriggen, Roger; Berger, Alfons; Herwegh, Marco (2020). Influences of temperature and opening rate of substrate cracks on the mechanical behaviour, crack–bridging ability and deformation mechanisms of one–component, cementitious, flexible waterproofing membranes. Cement and concrete research, 136, p. 106140. Elsevier 10.1016/j.cemconres.2020.106140

Text Waldvogel_et_al_2020.pdf - Published Version Restricted to registered users only Available under License Publisher holds Copyright. Download (22MB) | Request a copy

One–component, cementitious, flexible waterproofing membranes bridge cracks because their polymer-dominated
matrix takes up the deformation. The sensitivity of the deformation of polymers to temperature and strain
rate raises interest to the influence of these two parameters on the crack–bridging ability of the waterproofing
membranes. Temperature–controlled crack–bridging and dog-bone experiments with in–situ monitoring of the sample's surfaces show a decrease in the crack–bridging ability (CBA) of the waterproofing membranes and a decrease in plastic deformation at testing temperatures above the glass transition temperature (Tg) of the used polymer. At temperatures below the Tg, the membranes deform in a brittle manner. Rate–controlled crack–- bridging and dog-bone tests with in–situ monitoring of the sample's surfaces reveal a decrease in crack–bridging ability and plastic deformation with decreasing displacement rate. Hence, temperature and displacement rate are crucial parameters governing the crack-bridging performance of waterproofing membranes.

Interest & Impact

Downloads

2 since deposited on 16 Jul 2020
0 in the past 12 months

Citations

5 Citations in Web of Science ®
6 Citations in Scopus

Search

in Google Scholar™

Services

Actions (login required)

Edit item

Actions (login required)

Edit item