2006 Volume 12 Issue 24 Pages 21-26
This report deals with the results by the two types of the fatigue tests. First, performed on the nowadays regularly used fastening elements applied to the ALC panel substrates, and the second performed on the complete mechanically fastened waterproofing systms. The improvements of the problematic issues are also considered. Based on the first fatigue test results, we can state that the resistance of the fasteners and the ALC substrate, to the repetitive effect, is decreased. Moreover, depending on the fastening method, there are differences between the fatigue resistances of the fastening elements. The fatigue resistance is improving in the following order: the directly applied screws, the PA plug using fasteners, and the chemical fasteners with in advance injected epoxy resin. Test results of the both fatigue tests were compared. We can state that for the present waterproofing systems, the weak point is not the low strength of the ALC substrate, but the strength of the waterproofing membrane and/or the part of the force transmission from the fastener to the membrane. We presume that there is some potential to improve these problems.
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