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SHRINKAGE CRACK [8 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2016-01-15

English

Subject field(s)
  • Processing of Construction Materials
  • Strength of Materials
CONT

Pre-cracking consists of causing [a] shrinkage crack within the base at a desired place.

Key term(s)
  • precracking

French

Domaine(s)
  • Traitement des matériaux de construction
  • Résistance des matériaux
CONT

La préfissuration consiste à créer dans la couche mise en place des discontinuités transversales sur au moins 1/3 de son épaisseur, suivant un pas qui est généralement de 3 [mètres]. Ces discontinuités se transforment ultérieurement en fissures fines, régulières, rectilignes, à espacement maîtrisé, ne nécessitant pas d'entretien spécifique.

Key term(s)
  • pré-fissuration

Spanish

Save record 1

Record 2 2014-10-20

English

Subject field(s)
  • Petrography
  • Geomorphology and Geomorphogeny
DEF

A small crack formed in fine-grained sediment or rock by the loss of moisture during drying or dehydration.

OBS

Examples of shrinkage cracks include "desiccation crack, ""syneresis crack, "and "mud crack. "

French

Domaine(s)
  • Pétrographie
  • Géomorphologie et géomorphogénie
DEF

Fente de dessiccation qui se développe après la crue dans le domaine aride, due à la rétraction du sédiment qui s'assèche.

Spanish

Save record 2

Record 3 2014-10-20

English

Subject field(s)
  • Erosion and Weathering (Geol.)
  • Geochemistry
DEF

A subaqueous shrinkage [crack] in argillaceous sediments caused by earthquake-induced dewatering.

CONT

... syneresis cracks ... are common in shallow water with slightly mixed salinities.

OBS

syneresis: The gradual expulsion of water from the floc.

OBS

syneresis crack: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Érosion et corrosion (Géologie)
  • Géochimie
CONT

[...] on obtient des structures typiques de fentes de retrait lorsque le volume de sédiment baisse. Sous l'eau, ces fentes se nomment fente de synérèse, ou fente de dessiccation si elles se forment sur terre.

OBS

[Ce type de fissures] s'observe dans certains minéraux argileux.

OBS

craquelure de synérèse; figure de rétraction sous-aquatique : termes en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Save record 3

Record 4 2010-12-09

English

Subject field(s)
  • Welding and Soldering (Metals)
  • Nuclear Fission Reactors
DEF

A defect triggered in the root pass of a weld in the immediate neighbourhood of the contact zone, and which spreads radially between the grains when under stress in service.

OBS

[Delayed re-heat cracking] only occurs with certain materials such as 321 type stainless steel, as it is caused by hardening of the steel due to fine precipitations of titanium carbide inside the crystalline structure. The hardening causes the plastic deformation capacity to be transferred to the periphery of the grains. For this to happen, the following conditions have to be met : a high operating temperature([higher than] 475°C for 321 steel), a geometrical discontinuity at the weld root, strain hardening at the weld root showing significant shrinkage, heavy local load, which may be due to welding stresses, a defect in the weld root(e. g. a small shrinkage crack).

Key term(s)
  • delayed reheat cracking

French

Domaine(s)
  • Soudage (Métal)
  • Réacteurs nucléaires de fission

Spanish

Save record 4

Record 5 2007-11-07

English

Subject field(s)
  • Geology
DEF

An irregular fracture in a crudely polygonal pattern, formed by the shrinkage of clay, silt, or mud generally in the course of drying under the influence of atmospheric surface conditions.

CONT

Evaporites, caliche, calcrete, mudcracks, and other features record arid and semiarid continental environments of sedimentation.

OBS

The terms "shrinkage crack, "and "desiccation crack, "are more general terms.

OBS

mud crack: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Géologie
CONT

Les «fissures de la boue» ont une section en V ouverte vers le haut.

CONT

Les évaporites, les caliches, les calcrètes, les fentes de boue et d'autres caractéristiques attestent de milieux de sédimentation continentaux arides et semi-arides.

OBS

fente de boue : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

Save record 5

Record 6 2004-12-10

English

Subject field(s)
  • Erosion and Weathering (Geol.)
  • Soil Mechanics (Engineering)
DEF

A planar crack attributed to shrinkage of sediment due to dewatering...

OBS

It is commonly parallel to the bedding and filled with sparry calcite or mud.

French

Domaine(s)
  • Érosion et corrosion (Géologie)
  • Mécanique des sols
CONT

Les «copeaux» plus ou moins déformés et déplacés correspondraient à la desquamation de la surface desséchée du sédiment (sheetcracks).

Spanish

Save record 6

Record 7 1999-06-11

English

Subject field(s)
  • Petrography
  • Geology
DEF

A crack in sediment, produced by drying; esp. a mud crack.

OBS

See also "mud crack, ""shrinkage crack, "and "syneresis crack. "

French

Domaine(s)
  • Pétrographie
  • Géologie
DEF

Fissure apparaissant dans des matériaux meubles à forte teneur en argile, après une période de sécheresse.

Spanish

Campo(s) temático(s)
  • Petrografía
  • Geología
DEF

Grietas, generalmente en el barro o arcillas, producidas por la rápida desecación de la superficie.

CONT

Si hay un depósito sobre esta superficie, las grietas (i.e. de desecación) quedan fosilizadas.

CONT

[...] grietas de desecación actuales.

Save record 7

Record 8 1991-09-26

English

Subject field(s)
  • Concrete Construction
OBS

See record "shrinkage crack. "

French

Domaine(s)
  • Bétonnage
DEF

Fissure provoquée par les contraintes de traction résultant du retrait dû à l'évaporation et apparaissant quelques heures après le coulage, au début du raidissement.

CONT

Les fissures de retrait plastique sont causées, sous certaines conditions, par la contrainte de traction résultant du retrait dû à l'évaporation et apparaissant quelques heures après le coulage, lors du début du raidissement. (Annales de l'ITBTP, 8905, no 474, p. 90).

Spanish

Save record 8

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