Geotextile Nonwoven

Geotextiles were developed as a response to geotechnical demands for more economic methods of soil stabilization. Traditional approaches with natural materials were increasing in cost, not always readily available, and often difficult to install.

Lore with the development of synthetic polymers, a low cost alternative to natural materials became available, easily placed, with the added advantage of factory controlled properties. As a result, research and development with field application of geotextiles for over two decades has evolved into new manufacturing techniques for these products together with improved performance.

Rapid growth in the use of these new materials spread throughout the engineering field. The modern geotextiles are now readily accepted as the standard solution to geotechnical and hydraulic engineering problems.

Nonwoven geotextile

Made of high quality polypropylene fibers, Nonwoven Geotextile has a wide range of applications in civil environmental engineering and construction projects.

Applications

1. Drainage system
   
2. Base reinforcement & Stabilization, Subgrade improvement
   
3. Containment
   
4. MSE walls & Slopes
   
5. Erosion & Sediment control

Function

1. Filtration
   Geotextiles function to restrict the migration of fine soil particles from a soil mass while remaining permeable to water movement at least greater than, or equivalent to, permeability of the protected soil.
   
   
2. Drainage
   Water is conveyed vertically or horizontally along the plane of the geotextile and thence to an outlet. Drainage is related to the role of filtration, and is a function of the permeability of a geotextile and its pore opening size.
   
   
3. Separation
   Prevents two distinct soils of different materials from intermixing. The key factors for a geotextile to satisfy this function are porosity, toughness and strength.
   
   
4. Reinforcement
   This function involves stabilization of a soil mass by provision of tensile strength of the soil-fabrication system.

 

Specification
Geotextile
Material: Polypropylene (PP)

No.	Item		Unit	100	150	200	300	400
1	Unit weight variation		%	±6
2	Grab strength	MD	N	≥350	≥525	≥900	≥1100	≥1600
		TD
3	Grab elongation	MD	%	60-80			60˗85	50˗100
		TD		50˗70			50˗75
4	Grab strength	MD	%	3˗8
	at 50N	TD
5	CBR mullen brust strength		KN	≥1.3	≥1.95	≥2.5	≥3.5	≥4.3
6	Breaking strength	MD	KN	≥5.0	≥7.5	≥11	≥16	≥22
		TM
		45°oblique
7	Breaking elongation	MD	%	40˗75			40˗80	50˗90
		TD		45˗65			45˗70
8	Breaking elongation	MD	%	3˗6
	at 50N	TD
9	Puncture resistance		N	≥210	≥315	≥430	≥650	≥900
10	Peel strength		N/5 cm	≥80			≥100