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Non woven geotextiles for high-speed railway projects

Non woven geotextile, in addition recounted as geotextile, is a kind of geotextile made from fiber factors with the aid of mechanical, chemical, or thermal techniques such as spinning, melting, or bonding.

Commodity name： Non woven geotextiles for high-speed railway projects

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Description

Introduction

Geotextiles are divided into woven geotextiles and non-woven geotextiles. Geotextiles have excellent filtering, isolation, reinforcement and protection effects, high tensile strength, good permeability, high temperature resistance, freezing resistance, aging resistance, and corrosion resistance.
Non woven geotextile (polyester geotextile, non-woven geotextile), also known as geotextile, is a permeable geosynthetic material made from synthetic fibers through needle punching or weaving. The finished product is in the form of cloth, with a general width of 4-6 meters and a length of 50-100m.

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Applications

(1) In engineering projects such as highways (including temporary roads), railways, embankments, earth and rock dams, airports, sports fields, etc., it is used to strengthen weak foundations while also playing a role in isolation and filtration. Placing geotextiles on the bank slopes of rivers, lakes, and seas can also prevent water from being washed away.
(2) Reinforcement in backfill of retaining walls or used to anchor panels of retaining walls. Build wrapped retaining walls or abutments.
(3) Strengthen flexible pavement, repair cracks on the road, and prevent reflective cracks on the road surface.
(4) Increase the stability of gravel slopes and reinforced soil to prevent soil erosion and frost damage to soil at low temperatures.
(5) The isolation layer between road ballast and roadbed, or the isolation layer between roadbed and soft foundation.Non woven geotextiles for high-speed railway projects

Working Drawing

Specifications

Filament non-woven geotextile

Properties	Test Method	Unit	PETNW150	PETNW200	PETNW250	PETNW300	PETNW350	PETNW400	PETNW500	PETNW600
Tensile Strength (MD/TD)	ASTM D4595	kN/m	9.5	13	17	19	23	26	34	38
Tensile Elongation (MD/TD)	ASTM D4595	%	50	60	60	60	60	60	60	60
Grab Tensile Strength (MD/TD)	ASTM D4632	N	550	730	1000	1100	1400	1700	2000	2500
Grab Elongation (MD/TD)	ASTM D4632	%	50	50	60	60	60	60	60	60
Trapezoidal Tear Strength (MD/TD)	ASTM D4533	N	270	330	430	450	540	610	770	900
CBR Burst Strength	ASTM D6241	N	1800	2300	2800	3200	3600	4500	6000	7000
Pore Size O90	ASTM D4751	µm	110	110	100	100	90	80	70	70
Water Flow Q100	ASTM D4491	L/m2/s	235	210	190	170	160	125	100	80
U.V. Resistance	ASTM D4355	%@500h	70	70	70	70	70	70	70	70
Thickness	ASTM D5199	mm	1.2	1.6	1.9	2.2	2.5	2.8	3.4	4.2
Weight	ASTM D5261	g/m2	150	200	250	300	350	400	500	600
Roll Width	-	m	6	6	6	6	6	6	6	6
Roll Length	-	m	250	150	150	100	100	100	75	50