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What are geotextiles?

Topics Covered: e-technology in the aid of farmers.

What are geotextiles?

What to study?

For Prelims: About Geotextiles and PMGSY.

For Mains: Significance of this move and benefits associated.

Context: National Rural Infrastructure Development Agency (NRIDA) has announced that coir geo textiles will be used for construction of rural roads under the Pradhan Mantri Gram Sadak Yojana (PMGSY-III).

What is Coir geotextile?

Coir is a 100% natural fiber, obtained from a renewable source – the coconut husk.

Coir Geo Textile is naturally resistant to rot, molds and moisture, and free from any microbial attack hence it needs no chemical treatment. It has a permeable, natural and strong fabric with high durability.

Benefits:

  • It has a permeable, natural and strong fabric with high durability.
  • It protects the land surface and promotes quick vegetation.
  • It is totally biodegradable, and helps in soil stabilisation.
  • It can dissipate the energy of flowing water and absorb the excess solar radiation.

What are Geotextiles?

They are permeable fabrics which, when used in association with soil, have the ability to separate, filter, reinforce, protect, or drain. These are typically made from polypropylene or polyester.

Applications:

  • They support many civil engineering applications including roads, airfields, railroads, embankments, retaining structures, reservoirs, canals, dams, bank protection, coastal engineering and construction site silt fences or geotube.
  • They are also used for sand dune armoring to protect upland coastal property from storm surge, wave action and flooding.
  • They are used as matting to stabilize flow in stream channels and swales.
  • They can improve soil strength at a lower cost than conventional soil nailing.

Features of Pradhan Mantri Gram Sadak Yojana-lll (PMGSY-III):

Under the PMGSY-III Scheme, it is proposed to consolidate 1,25,000 Km road length in the States.

It involves consolidation of Through Routes and Major Rural Links connecting habitations to Gramin Agricultural Markets (GrAMs), Higher Secondary Schools and Hospitals.

The funds would be shared in the ratio of 60:40 between the Centre and State for all States except for 8 North Eastern states and Himachal Pradesh & Uttarakhand for which it is 90:10.

Background:

A total of 5,99,090 Km road length has been constructed under the scheme since inception till April, 2019 (inclusive of PMGSY-I, PMGSY-II and Road Connectivity Project for Left Wing Extremism Area (RCPLWEA) Scheme).

Sources: pib.