TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

A couple of studies have attempted to assess the long-term performance of geotextiles in erosion prevention structures.... The method employed in both cases, was to test samples recovered from sites where geotextiles had been in service for periods of 5 to 12 years. Examination of samples of thick non-woven geotextile revealed that, in some instances, a large quantity of soil particles had become trapped, filling over half the volume of pores in the geotextile. Although this degree of partial clogging might at first appear ominous none of these installations was actually at risk. This was because, even in this partially clogged state, the ratio of geotextile permeability to soil permeability exceeded 5. Heerten comments that this should guarantee sufficient long-term permeability.  1, record 1, English, - long%2Dterm%20permeability

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 OBS

(...) quelques exemples d'endommagement des structures côtières appellent d'urgence une étude de résistance à long terme. Un programme de recherche a donc été élaboré en vue de mettre au point des recommandations d'essai des géotextiles, des règles en matière de filtration et l'élucidation de la résistance à long terme des tissus. Cet article traite des procédures d'essai en relation avec les dimensions des mailles et la perméabilité à l'eau des tissus.  2, record 1, French, - perm%C3%A9abilit%C3%A9%20%C3%A0%20long%20terme

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

The movement by mechanical action or hydraulic flow of soil particles into the voids of a fabric and retention therein, thereby reducing the hydraulic conductivity of a geotextile.  2, record 2, English, - clogging

Record number: 2, Textual support number: 1 CONT

Clogging, blocking and blinding. If the geotextile pore openings are slightly too small, then there will be insufficient initial wash-through of fine soil particles to promote the rapid formation of an efficient graded filter in the adjacent soil. Where the geotextile pore openings are even smaller, then there is a serious risk that either blinding, severe blocking or severe clogging will develop with time. Blocking is where soil particles resting on the surface of the geotextile, either totally or partially obstruct the pore openings.... Blinding is a special form of severe blocking, where the soil grading permits the suffusion of fine soil particles which are too large to pass through the geotextile.... Where the size of many of the soil particles is very close to that of the geotextile pore openings, then they are likely to enter the pores and become trapped within the geotextile. This can cause severe clogging which is most likely to arise in thick non-woven geotextiles with a complex pore structure.  3, record 2, English, - clogging

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

Il existe deux risques majeurs de colmatage : le "clogging", qui est provoqué par la pénétration des particules à l'intérieur du géotextile (généralement les non-tissés) et donc réduit la perméabilité de ce dernier. [...] le "blocking", qui est l'obturation des canaux au point de passage du fluide dans le géotextile.  1, record 2, French, - clogging

Record number: 2, Textual support number: 1 OBS

Colmatage : Obturation, progressive ou non, d'une couche poreuse ou fibreuse ou d'un appareil par dépôt de particules solides ou liquides.  2, record 2, French, - clogging

Record number: 2, Textual support number: 2 OBS

Seule la source GIGUT semble utiliser le terme "clogging" comme spécifique par rapport au terme plus courant et plus large "colmatage".  3, record 2, French, - clogging

Record 2,  Textual support,  Spanish