Get the entire paper (pdf) - Ejge.com

Vol. 17 [2012], Bund. J 1356
utilized to improve not only the performance of the unpaved road by increasing the life time, but
also, minimizing the maintenance cost as well as reducing the thickness of the road.
Extensive analytical and experimental studies relating geosynthetic interfaced aggregate –
soil as unpaved road (Giroud and Noiray, 1981; Giroud et al., 1985; Love et al., 1987; Jacobsen,
1989; Espinoza and Bray, 1995; Burd, 1995; Fannin and Sigurdsson, 1996; Oloo et al., 1997;
Som and Sahu, 1999; Raymond and Ismail, 2003; Watts and Blackman, 2004; Giroud and Han,
2004; Chew et al., 2005; Retzlaff et al., 2006; Lyons and Fannin, 2006; Kazimierowicz-
Frankowska, 2007; Aggarwal et al., 2007; Hu and Zhang, 2007; Ghosh and Dey, 2009; and Basu
et al., 2009) are available.
Full-scale field tests and large scale laboratory tests (Elvidge and Raymond, 1999; Bergado et
al., 2001; Hufenus et al., 2006; Bhosale and Kambale, 2008; Subaida et al., 2009; Palmeria and
Antunes, 2010) are carried out to investigate the performance of unpaved roads. Laboratory CBR
tests are performed to study the use of natural coir and jute geotextile (Michael and Vinod, 2009;
Senthil Kumar and Pandiammal Devi, 2011; and Babu et al., 2011). CBR tests are also conducted
by introducing geotextiles and geogrid in granular soil (Naeini and Mirzakhanlari, 2008; Duncan-
Williams and Attoh-Okine, 2008; and Dhule et al., 2011). Further, based on CBR test, the
influence of geotextile, geogrid and geonet are investigated in clay with low or medium
compressibility (Srivastava et al., 1995; Naeini and Moayed, 2009; Nair and Latha, 2010;
Moayed and Nazari, 2011; and Nair and Latha 2011) as soft subgrade in an unpaved road system.
Hence, in this study the effect woven and non-woven geotextiles on the CBR strength of the
aggregate – soil system is carried out considering the clay with high compressibility as soft
subgrade.
MATERIALS USED
Soil
Soil sample obtained locally is used for the present experimental investigations. The required
properties of the soil were determined and are presented Table 1.
Table 1: Properties of Soil
Particulars
Soil
Specific Gravity 2.71
Liquid Limit (%) 54
Plastic Limit (%) 35
Plasticity Index (%) 19
BIS Classification
CH
Optimum Moisture Content (%) 15
Maximum Dry Density (g/cm 3 ) 1.562
California Bearing Ratio (%) 0.9