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Wpływ poużytkowych odpadów wykładzin samochodowych na parametry wytrzymałościowe zapraw cementowych

Pietrzak A., Ulewicz M.

Materiały Budowlane

2018

nr 10

85--86

W artykule przedstawiono wyniki badań wpływu dodatku odpadów polimerowych na wybrane właściwości mechaniczne zapraw cementowych (wytrzymałość na zginanie i ściskanie) wykonanych z cementu CEM I 42,5. Odpady polimerowe (zużyte dywaniki samochodowe) o uziarnieniu 0 – 2 mm stosowano w ilości 5; 7,5 oraz 10% masy cementu jako dodatek lub zamiennik piasku. Badania zostały przeprowadzone zgodnie z normą PN-EN 197-1. Celem badań było określenie możliwości wykorzystania odpadów polimerowych pochodzących z wykładzin samochodowych jako zamiennika kruszywa lub dodatku w zaprawach cementowych. Przeprowadzone badania nie potwierdziły możliwości wykorzystania wspomnianych odpadów w technologii produkcji zapraw cementowych.

In article, the results of research on the influence of added polymer waste on the selected mechanical properties of cement mortar (bending and compressive strength) based on cement CEM I 42.5 are presented. Polymer waste (automotive lining carpets) with a grain size of 0 – 2 mm was used in an amount of 5; 7.5 and 10% of cement mass as an additive or substitute for sand. The tests were carried out in accordance with PN-EN 197-1. The aim of the research was to determine the possibility of using polymer waste derived from car liners as a substitute from aggregates or addition in cement mortars. The tests carried out for the designed series of mortars unfortunately didn’t confirm the possibility of using these wastes in the technology production of cement mortar.

Design of Nonwoven Carpets to Upgrade Sound Isolation Features in Automobiles

Atakan R., Karakaş H., Sezer S., İpek S., Aravi I., Yıldırım C., Şen E.

Autex Research Journal

2014

Vol. 14, no. 4

270--280

With the increases of the expected properties of textile products, better and advanced new designs are being created. Textiles used in vehicles are increasing, and the current performance of the expectations bar is determined by automobile manufacturers. While meeting the expectations of users in the vehicle mechanically, but also disturbing the user during operation of the mechanical properties of this ratio should be minimized. This study was intended to minimize sound transmission of nonwoven textile components, which are used in cars as silencer parts. For that purpose, four different models were developed in this study. First model consists of three designs for baggage carpets. Second model has six designs for floor coverings. Third model comprises two designs inner dash felt and finally fourth model includes two designs of hood liners. The acoustical absorption coefficients and transmission loss of these carpets were tested and evaluated in the frequency range of 16-6300 Hz. The measurements demonstrated that nonwoven layer is a very significant and effective part of a carpet due to its contribution in the sound isolation. With this study, it has been determined which layer has better performance on sound absorption and transmission loss among different carpet types. A combination of heavy layer and nonwoven layer carpets is found to be benefit for noise and sound insulation.