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Abstract

The influence of the calendaring process of nonwoven geotextiles on the water permeability normal to their planes, including influence of different loads, as well as pore characteristics investigated by two different methods has been studied. Methods of pore characteristics differ in obtaining different pore parameters. Two groups of samples were produced whereas first group is bonded by needle punching, while second group is needle punched samples taken from first group and additionally bonded by calendaring. Mass per unit area for both groups is in range of 150 to 500 g/m², with increasing by 50 g/m² for the next sample within groups. Calendaring process decrease water permeability of geotextile, but also decreases interval of geotextile water permeability change due to the applied pressure. Calendared geotextiles have controlled and predictable compressibility, respectively structure which will not significantly change in the practical application.

Keywords

Polypropylene calendaring water permeability with load AOS porometry

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References

Hwang

G-S

Hwu

B-L

Hsing

W-H

. Manufacturing effects on the hydraulic properties of needlepunched nonwoven geotextiles. Geotextil Geomembr 1998; 16: 355–363.

Palmeira

Gardoni

. Drainage and filtration properties of non-woven geotextiles under confinement using different experimental techniques. Geotextil Geomembr 2002; 20: 97–115.

Carvalho R, Fangueiro R and Soutinho F. Mechanical properties of needle-punched nonwovens for geotechnical applications. In: international conference on engineering (UBI2011), Covilhã, Portugal, 28–30 November 2011.

Sarsby RW. Geosynthetics in civil engineering. Woodhead Publishing Limited & The Textile Institute Woodhead Publishing Limited, Cambridge, 2007.

McGown

Andrawes

. An approach to laboratory testing of geotextiles. Q J Eng Geol London 1982; 15: 177–185.

Bouazza

Freund

Nahlawi

. Water retention of nonwoven polyester geotextiles. Polym Test 2006; 25: 1038–1043.

Balasubramanian

Rakshit

Patel

. Opening size and water permeability of nonwoven geotextiles. Indian Textil J 1991, pp. 26–32. June.

Dierick W and Leyman N. Temperature correction for water permeability determination of geotextiles. In: proceedings of the fifth international conference on geotextiles, geomembranes and related products, Singapore, 5–9 September 1994, pp.845–848.

Van Santvoort GPTM. Geosynthetics in civil engineering. A.A. Balkema Publishers, Rotterdam, 1995.

10.

Albrecht W, Fuchs H and Kittelmann W. Nonwoven fabrics. Wiley-VCH, Weinheim, Germany, 2003.

11.

HRN EN ISO 9862:2005. Geosynthetics-sampling and preparation of test specimens.

12.

DIN 60500-4:1997 .Testing of geotextile-Part 4: determination of permeability of geotextile normal to their planes under load of constant hydraulic high difference.

13.

ISO 12956:1999. Geotextiles and geotextile related products-determination of the characteristic opening size.

14.

ASTM D6767-02. Pore size characteristics of geotextiles by capillary flow test, which differ in testing of the pore parameters.

15.

Characterization of pore structure: foundation, http://www.pmiapp.com/publications/index.html. Accessed October, 2012.

16.

Akshaya

Gupta

. An innovative technique for pore structure analysis of fuel cell and battery components using flow porometry. J Power Sources 2001; 96: 214–219.

17.

Giroud JP. Development of criteria for geotextiles and granular filters. In: prestigious lecture, proceedings of the 9th international conference on geosynthetics, Guaruja, Brazil, May 2010, Vol. 1, pp.45–64.

18.

Aydilek

Oguz

Edil

. Constriction size of geotextile filters. J Geotech Geoenviron Eng 2005; 131: 28–38.

19.

Fluet JE Jr. Geotextile testing and the design engineer. In: proceedings of the ASTM symposium on geotextile testing and the design engineer, Los Angeles, CA, 1985.

20.

TenCate™ Geosynthetics North America: understanding porometer versus AOS testing of a geotextile, Technical note, 2011.

Impact of calendering process on nonwoven geotextiles hydraulic properties

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