Nonwoven Geotextile

  • Description
  • Laying technology
Nonwoven Geotextile

Nonwoven Geotextile is a geosynthetic material representing a nonwoven cloth from polymeric fibers of polyester, polypropylene or their mix produced by a needle-punched method (needle-punched geotextile or a needle-punched fabric), with eventual posterior thermobonding.

FUNCTIONS

  • Separation – geotextiles for separation is a layer between different layers of ground, preventing their intermixing and subsidence.
  • Protection – in composite materials geotextiles protects other geosynthetic materials from mechanical damages.
  • Reinforcing – the reinforcing geotextile makes the structure stronger, due to even distribution of soil and consolidation of an embankment.
  • Drainage – geotextile for drainage protects the water catch layers in drainage systems from other layers.
  • Filtration – geotextile for filtration prevents silting, mixing of different layers of ground.

APPLICATION

NONWOVEN GEOTEXTILE FOR ROAD CONSTRUCTION

In the modern world construction of auto roads, railways, bridges, and transport hubs does not go without the use of geosynthetics. Geotextiles is the most common geosynthetic material in road construction. It performs separation functions between different layers of roadbed that consolidates the construction and prevents uneven subsidence on different sites of an object. This approach increases the life cycle of the road.

NONWOVEN GEOTEXTILE FOR DRAINAGE SYSTEMS

Organisation of drainage systems currently represents a relevant step in adjustment of engineering networks in construction, especially under different climatic zones and conditions. Geotextile separates different layers of ground, protects the water catch layers, prevents deformation processes, intermixing and silting. Geotextile is also used as a one or two layer wrapper of drainage pipes. The first layer stiffens the construction, and the second layer performs the filtering function, providing free transmission of water and preventing accumulation of silt and litter in system.

NONWOVEN GEOTEXTILE FOR WATERPROOFING

Geotextile in itself does not possess water-repellent properties, however it considerably increases efficiency of the waterproofing systems. Geotextile strengthens waterproofing material, protects it from mechanical damages that considerably increases life cycle of the waterproofing system.

NONWOVEN GEOTEXTILE FOR FOUNDATION

Geotextiles are used in construction of buildings and structures on the soil from sedimentary rocks or containing a large number of organic components. Therefore geotextile performs major functions in the organisation of foundations of different construction objects:

  • Geotextile flooring in a foundation pit provides strengthening of a subfoundation. (Area of construction object has to keep within the surface of the used geotextile!)
  • Geotextile protects the foundation from leakage of underground waters, premature destruction.
  • Geotextile increases quality of concrete foundation. It prevents leakage of liquid components of a cement grout in the ground and keeps the initial set of characteristics of the concrete.

NONWOVEN GEOTEXTILE FOR ROOFING

Geotextiles are used for construction of the flat roof using a waterproofing membrane. The membrane is unstable to mechanical damages and geotextile executes protection function. It also divides a PVC membrane from polystyrene foam and mineral wool during construction of an industrial roof.

NONWOVEN GEOTEXTILE FOR LANDSCAPING

Geotextile for landscaping fits within different forms and elements therefore it is widely applied in a construction of multi-level landscape objects: multi-level flower beds, terraces, reservoirs. The fabric stops soil slipping, prevents erosion. It keeps decorative plantings in original state, stopping germination of weeds and sprouts.

NONWOVEN GEOTEXTILE FOR PASSAGES AND PAVING SLABS

During creation of parks, pedestrian and garden sites high-quality design of a sidewalk path plays an important role. Geotextile strengthens sedimentary soil, stops the growth of pests, and protects paving slabs from subsidence and overgrowing.

NONWOVEN GEOTEXTILE FOR AGRICULTURE

In agriculture geotextile performs a very important function: protection of agricultural plantations against germination of undesirable plants. For this purpose when laying geotextile it is necessary to make special holes for the planted cultures. High water permeability does not block the inflow of moisture to roots, providing them active growth.

NONWOVEN GEOTEXTILE FOR CONSTRUCTION OF MUNICIPAL SOLID WASTE (MSW) LANDFILLS

For construction of (MSW) landfills and platforms geotextile protects the geomembrane from mechanical damages that prevents penetration of polluting substances into the soil, providing effective isolation and neutralization of solid domestic waste.

ADVANTAGES

  • Resistant to rotting, decomposition, destruction;
  • Not exposed to microorganisms, insects and rodents;
  • Resistant to various hostile environment (alkali, acid);
  • High air and water permeability;
  • Insensitive to temperature differences ;
  • High operational characteristics in various climatic conditions;
  • Environmentally safe;
  • Light weighted
  • High-elasticity;
  • Simple installation;
  • Resistant to mechanical damages (breaks, punctures);
  • Long life cycle;
  • Reasonable price.

Technical Data Sheet

Nonwoven geotextile for construction Geokom D calendered

Index name 100 150 200 250 300 350 400 450 500 550 600 Method
Tensile strength. machine direction, kN/m (-kN/m) 3,2 (-0,7) 5,2 (-0,8) 7,2 (-1,0) 10,0 (-1,5) 12,5 (-1,5) 13,5 (-1,5) 15,0 (-1,5) 16,5 (-2,0) 19,5 (-2,0) 21,0 (-2,0) 23,0 (-2,0) EN ISO 10319
Tensile strength. cross direction, kN/m (-kN/m)  3,2 (-0,7) 5,2 (-0,8) 7,2 (-1,0) 10,0 (-1,5) 12,5 (-1,5) 13,5 (-1,5) 15,0 (-1,5) 16,5 (-2,0) 19,5 (-2,0) 21,0 (-2,0) 23,0 (-2,0) EN ISO 10319
Elongation. machine direction, % (+/-%) 25 (+/-20) 35 (+/-20) 35 (+/-20) 35 (+/-20) 40 (+/-15) 50 (+/-15) 50 (+/-15) 50 (+/-15) 50 (+/-15) 50 (+/-15) 50 (+/-15) EN ISO 10319
Elongation. cross direction, % (+/-%) 35 (+/-25) 35 (+/-20) 45 (+/-20) 45 (+/-20) 50 (+/-15) 60 (+/-15) 60 (+/-15) 60 (+/-15) 60 (+/-15) 50 (+/-15) 60 (+/-15) EN ISO 10319
Static puncture resistance (CBR test), kN (-kN) 0,55 (-0,15) 0,95 (-0,15) 1,50 (-0,20) 1,90 (-0,25) 2,20 (-0,30) 2,3 (-0,30) 2,6 (-0,40) 2,7 (-0,40) 3,5 (-0,60) 3,7 (-0,60) 4,0 (-0,70) EN ISO 12236
Dynamic perforation test, mm (+mm) - - 39 (+9) 31 (+7) 22 (+5) 24 (+5) 22 (+5) 19 (+5) 18 (+5) 17 (+4) 15 (+4) EN ISO 13433
Characteristic opening size Q 90, µm (+/-µm) 100 (+/-20) 97 (+/-20) 95 (+/-20) 80 (+/-20) 63 (+/-20) 82 (+/-20) 80 (+/-20) 79 (+/-20) 78 (+/-20) 78 (+/-20) 77 (+/-20) EN ISO 12956
Water flow capacity in their plane, l/m*s*10-4
20kPa, i=1, l/(m2s) (-l/(m2s))
125 (-25) 112 (-25) 102 (-20) 80 (-20) 54 (-15) 84 (-15) 72 (-15) 62 (-15) 55 (-15) 50 (-15) 48 (-15) EN ISO 11058
Water flow capacity in the plane 20kPa, l/m*sec*10-4
(-l/m*sec*10-4)
11 (-2) 11 (-2) 11 (-2) 11 (-2) 11 (-2) 33 (-6) 35 (-6) 37 (-7) 44 (-9) 49 (-10) 51 (-10) EN ISO 12958
Thickness under 2 kPa, mm (+/-mm) 0,8 (+/-0,2) 1,0 (+/-0,2) 1,2 (+/-0,3) 1,5 (+/-0,3) 1,8 (+/-0,4) 1,9 (+/-0,4) 2,2 (+/-0,5) 2,5 (+/-0,5) 2,6 (+/-0,5) 2,8 (+/-0,6) 3,0 (+/-0,6) EN ISO 9863-1
Composition of raw materials PES 100%  

Technical Data Sheet

Nonwoven geotextile for construction Geokom D

Index name 100 150 200 250 300 350 400 450 500 550 600 Test Standard
Tensile strength, machine direction, кN/m (-кN/m) 3,0 (-0,7) 5,0 (-0,8) 7,0 (-1,0) 9,0 (-1,5) 11,5 (-1,5) 13,0 (-1,5) 14,0 (-1,5) 15,0 (-2,0) 16,5 (-2,0) 18,0 (-2,5) 19,5 (-2,5) EN ISO 10319:2015
Tensile strength, cross direction, кN/m (-кN/m) 3,0 (-0,7) 5,0 (-0,8) 7,0 (-1,0) 9,0 (-1,5) 11,5 (-1,5) 13,0 (-1,5) 14,0 (-1,5) 15,0 (-2,0) 16,5 (-2,0) 18,0 (-2,5) 19,5 (-2,5) EN ISO 10319:2015
Elongation at fracture, machine direction, % (±%) 85 (±25) 85 (±25) 85 (±20) 85 (±20) 85 (±20) 85 (±20) 85 (±20) 90 (±20) 90 (±20) 100 (±25) 100 (±25) EN ISO 10319:2015
Elongation at fracture, cross direction, % (±%) 85 (±25) 85 (±25) 85 (±20) 85 (±20) 85 (±20) 85 (±20) 85 (±20) 90 (±20) 90 (±20) 100 (±25) 100 (±25) EN ISO 10319:2015
Puncture resistance (CBR test), кN (-кN) 0,45 (-0,15) 0,7 (-0,15) 0,9 (-0,15) 1,4 (-0,2) 1,7 (-0,2) 2,0 (-0,3) 2,2 (-0,3) 2,3 (-0,4) 2,5 (-0,4) 2,6 (-0,4) 2,8 (-0,4) EN ISO 12236:2006
Impact resistance (cone drop test), mm (+mm) 47 (+6) 36 (+6) 26 (+6) 16 (+5) 14 (+5) 13 (+5) 12 (+5) 11 (+4) 9 (+4) 8 (+3) 7 (+3) EN ISO 13433:2006
Permeability in the direction perpendicular to the plane, l/m2s (-l/m2s) 120 (-30) 103 (-30) 85 (-20) 86 (-20) 84 (-20) 68 (-20) 66 (-20) 62 (-20) 60 (-20) 57 (-20) 51 (-20) EN ISO 11058:2010
Thickness at a load of 2 kPa, mm 1,6 (±0,4) 1,9 (±0,4) 2,1 (±0,5) 2,2 (±0,6) 2,8 (±0,6) 2,9 (±0,7) 3,2 (±0,7) 3,4 (±0,8) 3,5 (±0,8) 3,7 (±0,8) 3,8 (±0,9) ISO 9863-1:2016
Composition 100% PES  

Process of geotextile laying in construction and building of different objects includes the following stages:

PREPARATION OF THE GROUND FOUNDATION FOR GEOTEXTILES LAYING

Ground foundation should be levelled and tamped before laying of a geotextile. This stage can be excluded if geotextile is used as a layer for the embankment from weak soil. If the foundation has hollows, pits, deep holes or trenches they need to be filled up and tamped. Plants and bushes are levelled with the surface.

LAYING AND MOUNTING

Geotextile has to be laid manually and rolled along the area. Certain sections of material are to be laid with an overlap. During laying, geotextile should at once be attached to foundation with anchors to the end and places of overlapping. When mounting, geotextile needs to be levelled and to slightly stretched, avoiding folds. An anchor represents a metal bracket that prevents slipping, shifting and fixes the geotextile to its designed positions. Brackets lock in two places on width and through each 8 m longwise.

FILLING OF AN SUPERINCUMBENT LAYER

The quality of geotextile mounting depends on maintenance of necessary conditions of the third stage.

  • Geotextile shall be filled during one shift;
  • Movement of vehicles on the laid geotextile without filling should be prohibited;
  • Distance between the workers laying geotextile and the equipment has to be not less than 20 m.