Naslov
Influence of calandering on properties of nonwoven needlepunched geotextiles

Autori
Kopitar, Dragana ; Skenderi, Zenun ; Rukavina, Tatjana

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
4th International Technical Textiles Congress / Sariişik, Merih ; Karabay Gülseren - Istanbul, 2010, 99-100

ISBN
978-975-441-285-7

Skup
4th International Technical Textiles Congress

Mjesto i datum
Istanbul, Turska, 16.05.2010. - 18.05.2010

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
geotextile; HTPP; needlepunching; calendering; thickness; tensile properties; pore size

Sažetak
The application of nonwoven geotextiles in geotechnology is in a state of constant development. Their application could be a permanent or temporary structural element in the design of earthworks, the laying foundations for roads and buildings or for the reinforcement of soil. The main functions of geotextiles are separation, drainage, reinforcement and filtration. Geotextiles are made from natural and synthetics fibres. For temporary usage, geotextiles made from natural fibres are preferable. Synthetic fibres are mostly for long term usage, for which physical and chemical resistance and dimensional stability are required. The most common polymer used in geotextile production is polypropylene, followed by polyester and others. The properties of geotextiles depend on the web forming, bonding and finishing processes. The tensile properties or mechanical responses include the ability of textiles to be used in a “stressed” environment. Usually, the stressed environment is known in advance and the textile is selected on the basis of the expected stresses, without it being put under more strain than the predetermined level. The separation, filtration and drainage-in-plane functions of geotextiles are dominated by their pore space characteristics, as these determine the size of the particles and the amount of water that may be transmitted through them Samples for this investigation are made from a blend of HTPP fibres of different lengths, in which 70% of the fibres were 90 mm long and 30% were120 mm. The fibre finesses was 6, 7 dtex for both fibre lengths. The manufacturing process for nonwoven geotextiles, as examined in this paper, is that of dry-laid web-forming by roller card. The method of web bonding for all samples was the needling process, in which samples with the same mass per unit area have been additionally calendared. The samples were manufactured in the following mass per unit areas: 200, 300 and 500 g/m2. For this investigation, the samples were tested for the following properties: thickness, density, tensile properties and pore size.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Tekstilna tehnologija

POVEZANOST RADA