Papua New Guinea Backfilling of retaining walls Geotextile

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.

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Papua New GuineaGeotextile

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Product Description

Introduction

Non woven geotextile (polyester geotextile, non-woven geotextile), moreover considered as geotextile, is a permeable geosynthetic material made thru needling or weaving synthetic fibers. The finished product is in the shape of cloth, with a acquainted width of 4-6 meters and a dimension of 50-100m.

Geotextiles are divided into woven geotextiles and non-woven geotextiles. Geotextiles have pinnacle notch filtering, isolation, reinforcement and security effects, immoderate tensile strength, appropriate permeability, immoderate temperature resistance, freezing resistance, developing historic resistance, and corrosion resistance.

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Applications

In engineering initiatives such as highways (including transient roads), railways, embankments, earth and rock dams, airports, sports activities things to do fields, etc., it is used to beef up prone foundations at the same time as moreover taking section in a function in isolation and filtration. Placing geotextiles on the financial institution slopes of rivers, lakes, and seas can moreover prevent water from being washed away.

Working Drawing

(1) Reinforcement in backfill of keeping partitions or used to anchor panels of retaining walls. Build wrapped conserving partitions or abutments.

(2) Strengthen flexible pavement, restoration cracks on the road, and cease reflective cracks on the road surface.

(3) Increase the stability of gravel slopes and bolstered soil to end soil erosion and frost harm to soil at low temperatures.

(4) The isolation layer between avenue ballast and roadbed, or the isolation layer between roadbed and mild foundation.

(5) The isolation layer between artificial filling, rock filling, or cloth yard and foundation, as proper as the isolation between exclusive frozen soil layers. Plays a characteristic in filtration and reinforcement.

(6) The filter layer of the preliminary upstream dam ground of the ash storage dam or tailings dam, and the filter layer of the drainage computing device in the backfill soil of the protecting wall.

(7) Filter layer spherical drainage pipes or gravel drainage ditches.

(8) The filter layer of water wells, pressure alleviation wells, or inclined pipes in hydraulic engineering.

(9) The isolation layer of geotextiles between highways, airports, railway tracks, and artificial stone piles and the foundation. Non woven geotextile (5 sheets)

(10) Vertical or horizontal drainage indoors the earth dam, buried in the soil to dissipate pore water pressure.

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