NL9500351A - Geotextile for weighting and protection against water to be used in or on banks (in the most general sense of the word) - Google Patents

Geotextile for weighting and protection against water to be used in or on banks (in the most general sense of the word) Download PDF

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Publication number
NL9500351A
NL9500351A NL9500351A NL9500351A NL9500351A NL 9500351 A NL9500351 A NL 9500351A NL 9500351 A NL9500351 A NL 9500351A NL 9500351 A NL9500351 A NL 9500351A NL 9500351 A NL9500351 A NL 9500351A
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NL
Netherlands
Prior art keywords
water
geotextile
layer
weighting
word
Prior art date
Application number
NL9500351A
Other languages
Dutch (nl)
Inventor
Franciscus Gerardus Ant Vreede
Original Assignee
V & T Dinamiek B V
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by V & T Dinamiek B V filed Critical V & T Dinamiek B V
Priority to NL9500351A priority Critical patent/NL9500351A/en
Publication of NL9500351A publication Critical patent/NL9500351A/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/20—Securing of slopes or inclines
    • E02D17/202—Securing of slopes or inclines with flexible securing means
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • E02B3/122—Flexible prefabricated covering elements, e.g. mats, strips
    • E02B3/126—Flexible prefabricated covering elements, e.g. mats, strips mainly consisting of bituminous material or synthetic resins

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

The invention of this application relates to a geotextile composed of two nonwoven types, use being made of the hydrophobic and hydrophilic properties of the material. The bottom layer repels water and the top layer absorbs water, which means that if this is used in bank forms etc. the top layer ensures pressure on the bank and the bottom layer prevents slippage (displacement). To strengthen (reinforce) the geotexile, a scrim can be used and needling carried out.

Description

GEOTEXTIEL, ten behoeve van verzwaring en bescherming tegen water voor toepassing in of op taluds (in de meest algemene zin van het woord).GEOTEXTILE, for weighting and protection against water for use in or on embankments (in the most general sense of the word).

De uitvinding heeft betrekking op een toepassing waarbij twee soorten (non)wovens (al dan niet vemaald) worden samengevoegd tot één (non)woven, waarbij de eigenschappen van de genoemde (non)wovens zich ten opzichte van water tegengesteld gedragen, en wel zodanig dat de bovenste (non)woven laag water aantrekt dus als zodanig hydrofiel is en de onderlaag water afstoot, hydrofoob is. Beide lagen tezamen vormen één geotextiel, welke al dan niet versterkt kan worden met een steunweefsel (scrim). Voor dit doel kunnen de (non)wovens van diverse materialen zijn op voorwaarde dat de eigenschappen zijn als boven beschreven.The invention relates to an application in which two types of (non) wovens (whether or not ground) are combined into one (non) woven, in which the properties of the said (non) wovens behave opposite to water, in such a way that the top (non) woven layer attracts water, so is hydrophilic as such and the bottom layer repels water, is hydrophobic. Both layers together form one geotextile, which may or may not be reinforced with a support fabric (scrim). For this purpose, the (non) wovens of various materials can be provided that the properties are as described above.

Om de werking te testen is gebruik gemaakt van meltblown polypropy-leen. Dit materiaal zal in hydrofiele toestand 15 tot 20 x het eigen gewicht opnemen aan water en dient als bovenlaag. In hydrofobe toestand zal dit materiaal water afstoten en alleen olieverbindingen opnemen.Meltblown polypropylene was used to test the effect. This material will absorb 15 to 20 times its own weight in water in a hydrophilic state and serves as the top layer. In the hydrophobic state, this material will repel water and only absorb oil compounds.

Afzonderlijk worden beide (non)wovens gebruikt voor boven beschreven doelen en komen ook in gelamineerde uitvoering voor voorzien van een kunststof onderlaag om doorlekken te voorkomen.Separately, both (non) wovens are used for the purposes described above and also come in a laminated version with a plastic bottom layer to prevent leakage.

Geotextiel is meestal een (non)woven vezeldoekvorm en heeft als eigenschap dat het een grote treksterkte heeft in langs- en dwarsrichting. In taluds zoals dijken-, wegenbouw- en spoorbaanondersteuning wordt geotextiel gebruikt voor het versterken van het talud, met name om verschuivingen tegen te gaan.Geotextile is usually a (non) woven fiber cloth shape and has the property that it has a great tensile strength in the longitudinal and transverse directions. In embankments such as dyke, road construction and railway support, geotextiles are used to strengthen the embankment, in particular to counteract shifts.

Het geotextiel waarvoor bescherming gevraagd wordt, heeft als bijzonder kenmerk de bescherming van taluds en met name van dijken. Door de dubbele eigenschap van het materiaal zal de funktie tweeledig zijn:The geotextile for which protection is requested has as a special feature the protection of slopes and in particular of dikes. Due to the double property of the material, the function will be twofold:

De wateropnemende bovenlaag zal door het opgezogen watervolume zorgen voor het gewicht, hetgeen in de huidige techniek middels zandzakken of grond afdekking plaats vindt. De water afstotende onderlaag zorgt voor de afsluiting tegen watermigratie van zowel buiten naar binnen als omgekeerd waardoor een waterdoorbraak en vervolgens verschuivingsgevaar van grondlagen voorkomen wordt. Het eventuele steunweefsel kan de treksterkte van het samengestelde weefsel verhogen.The water-absorbing top layer will provide the weight due to the water volume sucked up, which in the current technique takes place by means of sandbags or ground cover. The water-repellent bottom layer provides the seal against water migration from both the outside to the inside and vice versa, preventing a water breakthrough and subsequently the risk of shifting of soil layers. The optional support fabric can increase the tensile strength of the composite fabric.

Door bovenbeschreven geotextiel als beveiligingsdoek te gebruiken, verwerkt in of op een talud kan bij doorbraakgevaar in geval van grote waterbe-lasting dit geotextiel optimaal funktioneren.By using the geotextile described above as a protective fabric, incorporated in or on a slope, this geotextile can function optimally in the event of a breakthrough risk in the event of a high water load.

Claims (1)

Geotextiel voor toepassing als talud en dijkbescherming, samengesteld uit twee lagen woven dan wel nonwoven materiaal al dan niet voorzien van een steunweefsel gekenmerkt doordat: De bovenlaag een hydrofiele wateropnemende eigenschap heeft, waarbij tenminste 15 - 20 x het eigen gewicht aan water opgenomen kan worden. De onderlaag een hydrofobe waterafstotende eigenschap heeft. De materiaalsamenstelling niet belangrijk is, zolang beide tegengestelde eigenschappen maar aanwezig zijn en beide materialen met elkaar verbonden zijn. De laagdikte van de bovenlaag voldoende dik dient te zijn en zodoende voldoende watergewicht kan opnemen om door deze waterdruk de onderlaag te fixeren. De verbinding tussen beide lagen en eventuele steunlaag voldoende treksterkte dient te geven zowel in langs- als in dwarsrichtingGeotextile for use as a slope and dike protection, composed of two layers of woven or non-woven material, whether or not provided with a supporting fabric, characterized in that: The top layer has a hydrophilic water-absorbing property, whereby at least 15 - 20 times its own weight of water can be absorbed. The bottom layer has a hydrophobic water-repellent property. The material composition is not important, as long as both opposing properties are present and both materials are connected. The layer thickness of the top layer must be sufficiently thick and can therefore absorb sufficient water weight to fix the bottom layer by this water pressure. The connection between the two layers and any supporting layer must provide sufficient tensile strength in both the longitudinal and transverse directions
NL9500351A 1995-02-23 1995-02-23 Geotextile for weighting and protection against water to be used in or on banks (in the most general sense of the word) NL9500351A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL9500351A NL9500351A (en) 1995-02-23 1995-02-23 Geotextile for weighting and protection against water to be used in or on banks (in the most general sense of the word)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9500351A NL9500351A (en) 1995-02-23 1995-02-23 Geotextile for weighting and protection against water to be used in or on banks (in the most general sense of the word)
NL9500351 1995-02-23

Publications (1)

Publication Number Publication Date
NL9500351A true NL9500351A (en) 1996-10-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
NL9500351A NL9500351A (en) 1995-02-23 1995-02-23 Geotextile for weighting and protection against water to be used in or on banks (in the most general sense of the word)

Country Status (1)

Country Link
NL (1) NL9500351A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006021756A1 (en) * 2004-08-21 2006-03-02 Permavoid Limited Product for retention and degradation of pollutant substances

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006021756A1 (en) * 2004-08-21 2006-03-02 Permavoid Limited Product for retention and degradation of pollutant substances
GB2418640B (en) * 2004-08-21 2009-11-18 Permavoid Ltd Product for retention and degradation of pollutant substances

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