Sound Insulation of Walls with a new Mortar-Mix System
Invited paper
Hochschule für Technik Stuttgart
Tuesday 2 june, 2015, 15:20 - 15:40
Auditorium 2 (592)
Abstract:
A new clay block walling system called “dryfix®” becomes widely used in Germany and Austria. This system replaces the conventional mortar-mix by a special PUR-Foam applied partially in stripes on the bricks. The new system has the advantage of a shorter construction period and the application in a lower temperature range.
The impact on SRI due to the different bonding is investigated. The SRI of 4 different walls build up in the laboratory was measured for mortar applied in a continuous thin-bed method as well as with the striped dryfix® system. The wave speed was measured on two wall pairs and a modal analysis was carried out on one of this pairs. Differences in the SRI where detected in the low frequency range for brick walls with high thermal insulation although no significant differences were obtained for the single number quantities.