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By R. W. Sarsby
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Extra info for Geosynthetics in Civil Engineering
1(d) illustrate tension tests used to determine tensile design properties of geotextiles and geogrids. 1(b) shows the test specimen size for wide-width tension tests on geotextiles (ASTM D4595). For geogrids, either multirib specimens (Fig. 1(c)) or single-rib (Fig. 1(d)) may be used according to ASTM D6637. For the tests shown in Fig. 1(b), Fig. 1(c) and Fig. 1(d), the ultimate strength, strain at failure and modulus are typically determined. The strength and modulus are typically expressed in terms of a load per unit width of material rather than a stress since stress requires the definition of material thickness, which is generally difficult to describe for most geosynthetics and does not remain constant during tensile loading.
And Berg, R. R. (1995), ‘Geosynthetic design and construction guidelines’, Publication FHWA-A-HI-95, National Highway Institute Course 13213, US Department of Transportation, Federal Highway Administration, Washington DC, 396 pp. Hsuan, Y. , Koerner, R. M. and Lord, A. , Jr (1993), ‘A review of the degradation of geosynthetic reinforcing materials and various polymer stabilization methods’, in Geosynthetic Soil Reinforcement Testing Procedures, ASTM Special Technical Publication 1190 (Ed. S. C.
1(c)) or single-rib (Fig. 1(d)) may be used according to ASTM D6637. For the tests shown in Fig. 1(b), Fig. 1(c) and Fig. 1(d), the ultimate strength, strain at failure and modulus are typically determined. The strength and modulus are typically expressed in terms of a load per unit width of material rather than a stress since stress requires the definition of material thickness, which is generally difficult to describe for most geosynthetics and does not remain constant during tensile loading.
Geosynthetics in Civil Engineering by R. W. Sarsby