Geotextile weave

Woven geotextiles. A woven fabric consists of two sets of orthogonally interlaced filaments or staple-fibre yams. The weave design or pattern is determined by the manner in which yams or filaments are interlaced. Filaments or yams placed in the longitudinal and transverse directions are known as warp and weft, respectively. Monofilament and slit woven geotextiles are anticipated to be thinner in comparison to multifilament, spun, and fibrillated woven geotextiles. 

Knitted geotextiles. These are produced by interlocking a series of loops of filaments or yams to form a planar stmcture. The loops in the knitted stmcture are interlocked in different ways, similar to weave designs in woven fabrics. 

In weaving, the warp and weft yams are commonly referred to as picks and ends. The interlacing of the picks and ends gives a coherent structure, and the repeating pattern of the interlacing is referred to as the weave of the fabric. Woven geotextiles are commonly plain weave, but twill weave and leno weave are also used. ... 

Plain weave is the simplest interlacing pattern, as shown in Fig. 8.22 for jute and coir woven geotextiles in the length of the fabric a warp yam crosses over alternate wefts, and in the fabric width, a weft yarn crosses alternate warps. The frictional contact of the yarns at the interlacing points prevents each yarn slipping from its woven position, and it also increases the stiffness of the fabric. The interlacing causes the warp and weft yarns to have a... 

Unit cell of a balanced plain-weave geotextile under load. 

Figure 11.6 also illustrates how the spun yarns are employed in weaving a fabric. One set of yams would be used as a warp (i.e. giving the length of the fabric) and the other as the weft (i.e. giving the width). The mechanical action of looms is well reported in the cited literature [23, 24]. Here, we will therefore consider certain basic parameters of importance to the properties of woven natural geotextiles. 

As we described in the introduction to this section, weaving consists of intertwining two yams at right angles to create a fabric. Woven fabrics can be made from many different sorts of yams or filaments. The following hst shows the types of yams or filaments generally used to manufacture geotextiles ... 

Figure 4.6 Plain open-weave coir geotextile.

Coir-based geotextiles have both the benefits of biodegradabihty and durability required for the slow establishment of vegetative cover. Various open-weave coir geotextiles are employed in erosion control for reinforcement and embankment applications. Typical functional specifications for a woven coir geotextile are ... 

Weave patterns of woven geotextiles are significant to observed damage because more open weave patterns involve damage Ifom sharp particles that infiltrate the geotextile stracture. 

---