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WO2006001713A1 - Controle de fissures dans des materiaux a base de ciment - Google Patents

Controle de fissures dans des materiaux a base de ciment Download PDF

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Publication number
WO2006001713A1
WO2006001713A1 PCT/NZ2005/000125 NZ2005000125W WO2006001713A1 WO 2006001713 A1 WO2006001713 A1 WO 2006001713A1 NZ 2005000125 W NZ2005000125 W NZ 2005000125W WO 2006001713 A1 WO2006001713 A1 WO 2006001713A1
Authority
WO
WIPO (PCT)
Prior art keywords
cracking
cementitious substance
controlling
controlling cracking
base
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/NZ2005/000125
Other languages
English (en)
Inventor
Christopher John Fothergill Cook
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AU2005257680A priority Critical patent/AU2005257680B2/en
Priority to US11/570,298 priority patent/US20080022622A1/en
Priority to CA002573502A priority patent/CA2573502A1/fr
Priority to CN2005800204559A priority patent/CN1981099B/zh
Priority to JP2007517991A priority patent/JP2008503672A/ja
Priority to EP05757592A priority patent/EP1759070A1/fr
Publication of WO2006001713A1 publication Critical patent/WO2006001713A1/fr
Anticipated expiration legal-status Critical
Priority to GB0700389A priority patent/GB2429721B/en
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00—Details of pavings
    • E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
    • E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
    • E01C11/08—Packing of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E04B1/68—Sealings of joints, e.g. expansion joints
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00—Details of pavings
    • E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
    • E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
    • E01C11/10—Packing of plastic or elastic materials, e.g. wood, resin
    • E01C11/106—Joints with only prefabricated packing; Packings therefor

Definitions

  • This invention relates to means for controlling cracks in cementitious materials, for example in concrete.
  • means for controlling cracking in a body of cementitious substance having an elongate base, elongate side wall portions extending from the base and angling towards one another, and an aperture or apertures in the side wall portions, the means for controlling cracking formed such that when it is in use it can be positioned base down such that a cementitious substance prone to cracking can be poured around it and at least partially through it such that cracks which subsequently form within the cementitious substance will occur at or in the vicinity of the means for controlling cracking.
  • the cementitious substance comprises concrete.
  • the side wall portions together with a portion of the base between them, form a triangular shape when viewed in transverse cross section.
  • an extension extending upwards from an apex of the triangular shape.
  • the means for controlling cracking in a body of cementitious substance is in combination with a joint for combining a number of said means for controlling cracking.
  • means for controlling cracking in a body of cementitious substance having an elongate base, an elongate wall portion extending upwards from the base such that the base and the wall portion are substantially in an inverted "T" shape, and an aperture or apertures in the wall portion, the means for controlling cracking formed such that when it is in use it can be positioned base down such that a cementitious substance prone to cracking can be poured around it and at least partially through it such that cracks which subsequently form within the cementitious substance will occur at or in the vicinity of the means for controlling cracking.
  • the cementitious substance comprises concrete.
  • the aperture or apertures make up approximately 50% or more of the wall or wall portions, as the case may be.
  • means for controlling cracking in a body of cementitious substance having two elongate substantially V shaped portions, an elongate wall portion extending out from the interior of the apex of one of the V shaped portions and extending to the apex of the other V shaped portion, and an aperture or apertures in the wall portion, the means for controlling cracking formed such that when it is in use it can be positioned such that a cementitious substance prone to cracking can be poured around it and at least partially through the aperture or apertures such that cracks which subsequently form within the cementitious substance will occur at or in the vicinity of the means for controlling cracking.
  • the two V shaped portions have their apexes oriented in substantially the same direction.
  • the apexes of the V shaped portions are oriented in substantially opposite directions.
  • one of the V shaped portions is substantially larger than the other V shaped portion.
  • the aperture or apertures make up at least substantially 50% of the surface area of the wall portion.
  • means for controlling cracking in a body of cementitious substance having an elongate base portion and an elongate wall portion extending out from the base portion such that the base and wall portions substantially form a right angle, and an aperture or apertures in the wall portion making up at least substantially 50% of the wall portion, the means for controlling cracking formed such that when it is in use it can be positioned such that a cementitious substance prone to cracking can be poured around it and at least partially through the aperture or apertures such that cracks which subsequently form within the cementitious substance will occur at or in the vicinity of the means for controlling cracking.
  • a method of controlling cracks in a cementitious substance prone to cracking including the steps of: i) obtaining means for controlling cracking as described in any one of the preceding aspects and arranging it at or adjacent a position where it is desired that cracks form in the cementitious substance, ii) arranging a volume of the cementitious substance so that it extends around and at least partially through the wall or wall portions, as the case may be, and iii) allowing cracks to form in the cementitious substance at or in the vicinity of the means for controlling cracking.
  • the cementitious substance comprises concrete.
  • a method of controlling cracks in a cementitious substance prone to cracking including the steps of: i) obtaining a crack controller wherein the crack controller has a base, a wall or walls extending from the base, an aperture or apertures in the wall or walls, and arranging the crack controller in position where it is desired that cracks form in the cementitious substance,
  • the aperture or apertures make up at least 50% of the surface area of the wall or walls.
  • Figure 1 is a transverse cross section view of a concrete crack controller
  • Figure 2 is a side view of the crack controller of figure 1 ,
  • Figure 3 is a plan view of the crack controller of figures 1 and 2,
  • Figure 4 is a perspective view of an alternative concrete crack controller
  • Figure 5 is an end view of the crack controller of figure 4,
  • Figure 6 is a transverse cross section view of a straight line connector
  • Figures 7 and 8 are a side and plan view respectively of a four way connector
  • Figures 9 and 10 are a side and plan view respectively of a three way connector
  • Figures 11 and 12 are a side and plan view respectively of a two way angled connector
  • Figures 13 and 14 are a side and plan view respectively of a three way T connector
  • Figures 15 to 18 are perspective and end elevation views of alternative concrete crack controllers.
  • the concrete crack controller 1 is an elongate section having a base 2 with two elongate side walls 3 and 4 angling upwards from the base to meet one another.
  • the controller 1 is thus hollow and generally triangular in transverse cross section.
  • the side walls 3 and 4 have a series of spaced elongate apertures 5 as shown in figures 2 and 3.
  • the base 2 extends slightly either side of the walls 3 and 4, and the apex of the walls has a vertical extension 6.
  • the controller 1 When the controller 1 is in use it may be placed base 2 down and a volume of concrete is poured around it.
  • the concrete at least substantially covers the controller 1 and, by way of the apertures 5, passes therethrough.
  • Steel reinforcing (not shown) can also be passed through the apertures 5 if desired.
  • This controlled cracking may be facilitated by the fact that the body of concrete either side of the controller may have substantially greater mass than the controller and/or the portion of concrete which passes through the controller.
  • Figures 4 and 5 show an alternative concrete crack controller 7 which has a base 8 and an upwardly extending wall 9.
  • the base and the wall are substantially in an inverted "T" shape.
  • the controller 7 has a series of spaced elongate apertures 10.
  • the alternative crack controller 7 is used to control concrete cracks in much the same way as that mentioned previously, that is it is placed base 8 down and concrete is poured around and through it. Reinforcing steel may also be passed through the apertures 10. Cracks which form in the concrete tend to occur at or in the vicinity of the controller 7 given that it creates a line or lines of weakness in the concrete.
  • the controllers 1 and 7 each have small apertures in their base 2 or 8 to enable it to be fixed to an underlying surface if desired.
  • these bases 2 and 8 are substantially flat so that the controllers 1 and 7 can be more readily leveled if need be.
  • the triangular shape formed by the walls 3 and 4 and the underlying portion of the base 2 give a measure of strength and stability - eg to resist undesired lateral movement of the walls.
  • the controllers 1 and 7 may be formed from any suitable material, for example from steel, plastics, or resinous materials generally.
  • FIG. 6 shows a straight line connector 11 which can be used to join two of the first mentioned controllers 1. More specifically, two crack controllers 1 may fit onto the connector 11 as a sleeve, each at an opposite end of the connector 11. The connector 11 may have a lip 12 at each end to restrict the extent to which it can fit inside the crack controllers 1.
  • FIGs 7 and 8, figures 9 and 10, figures 11 and 12, and figures 13 and 14, show various other connectors which may be used with crack controllers 1 as described with reference to figures 1 , 2 and 3.
  • the crack controllers 1 fit as a sleeve onto the connectors.
  • each of these connectors has an aperture or apertures so that concrete or the like can enter inside and/or through them.
  • the crack controllers 1 and 7 and the various connectors described above are formed from 2.0 - 3.5 mm (or preferably from 2.5 - 3.0 mm) gauge steel or plastics.
  • the gauge of material used may be selected to match a desired expansion joint size.
  • the apertures 5 and 10 in the crack controllers account for approximately 50% or more of the side walls, and more preferably 52% of these.
  • At least some embodiments of the invention enable one to create controlled expansion joints in a body of concrete or the like.
  • the joints may correspond to the positioning of the crack controller beneath the surface of the concrete.
  • FIGS 15, 16, 17 and 18, show crack controllers 13, 14, 15, and 16 in accordance with alternative embodiments of the invention. Each figure shows the respective crack controller 13, 14, 15 or 16 in both end elevation and perspective.
  • Each of the crack controllers 13-16 are adapted for various applications, for example for the corners of concrete wall panels to control cracking therein, or to control cracking at floor level. Concrete may be applied to the controllers 13-16 by way of a spray method or any other suitable means.
  • the controllers 13, 14 and 16 each have two V shaped end portions and an intermediate connecting wall portion.
  • the wall portions have apertures to enable concrete or some other cementitious material to pass therethrough.
  • the apexes of the two V shaped end portions are oriented in the same direction and are connected to their wall portion at their apexes, either at the internal or external part of the apexes as the case may be.
  • the apexes of the two V shaped portions are oriented away from one another and are interconnected by their wall portion at the internal parts of such apexes.
  • the controller 15 is in the form of a right angle, one arm of the angle being a base portion, and the other being a wall portion having apertures therein.
  • the apertures thereof make up at least substantially 50% of the surface area of the wall portion in each case.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Building Environments (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Finishing Walls (AREA)

Abstract

En référence à la figure 1, un mode de réalisation de la présente invention comporte un dispositif (1) pour le contrôle de fissuration dans un corps de matériau à base de ciment, par exemple du béton, comportant un socle de forme allongée (2), des portions de parois latérales de forme allongée (3) et (4) s'étendant depuis le socle et inclinées l'une vers l'autre, et une ouverture ou des ouvertures dans les portions de parois latérales. Lors de l'utilisation du dispositif de contrôle de fissures, il peut être positionné avec son socle en bas de sorte qu'une substance à base de ciment susceptible à la fissuration puisse être coulée autour de et au moins en partie à travers celui-ci de sorte que les fissures qui se forment dans la substance à base de ciment se produisent au niveau ou à proximité du dispositif pour le contrôle de la fissuration.
PCT/NZ2005/000125 2004-06-25 2005-06-10 Controle de fissures dans des materiaux a base de ciment Ceased WO2006001713A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AU2005257680A AU2005257680B2 (en) 2004-06-25 2005-06-10 Controlling cracks in cementitious materials
US11/570,298 US20080022622A1 (en) 2004-06-25 2005-06-10 Controlling Cracks in Cementitious Materials
CA002573502A CA2573502A1 (fr) 2004-06-25 2005-06-10 Controle de fissures dans des materiaux a base de ciment
CN2005800204559A CN1981099B (zh) 2004-06-25 2005-06-10 粘结材料中的裂纹控制
JP2007517991A JP2008503672A (ja) 2004-06-25 2005-06-10 セメント質材料の亀裂制御
EP05757592A EP1759070A1 (fr) 2004-06-25 2005-06-10 Controle de fissures dans des materiaux a base de ciment
GB0700389A GB2429721B (en) 2004-06-25 2007-01-10 Controlling cracks in cementitious materials

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ533777A NZ533777A (en) 2004-06-25 2004-06-25 Controlling cracks in cementitious materials
NZ533777 2004-06-25

Publications (1)

Publication Number Publication Date
WO2006001713A1 true WO2006001713A1 (fr) 2006-01-05

Family

ID=32986088

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NZ2005/000125 Ceased WO2006001713A1 (fr) 2004-06-25 2005-06-10 Controle de fissures dans des materiaux a base de ciment

Country Status (10)

Country Link
US (1) US20080022622A1 (fr)
EP (1) EP1759070A1 (fr)
JP (1) JP2008503672A (fr)
KR (1) KR20070028562A (fr)
CN (1) CN1981099B (fr)
AU (1) AU2005257680B2 (fr)
CA (1) CA2573502A1 (fr)
GB (1) GB2429721B (fr)
NZ (1) NZ533777A (fr)
WO (1) WO2006001713A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080263981A1 (en) * 2004-08-13 2008-10-30 O'brien Timothy C Concrete Expansion Joint Forming Device
CN102071615B (zh) * 2010-12-21 2012-12-26 东南大学 连续配筋水泥混凝土路面裂缝间距控制方法
EE05873B1 (et) * 2019-04-05 2024-09-16 Primostar Tootmine Oü Praotekitaja betoonkonstruktsioonidele

Citations (7)

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JPH0748880A (ja) * 1993-08-09 1995-02-21 Fujita Corp 鉄筋コンクリート壁状構造物のひび割れ誘発目地装置
JPH07127008A (ja) * 1993-11-05 1995-05-16 P S Co Ltd 連続コンクリート舗装におけるひび割れ誘発部の構築方法
JPH07224535A (ja) * 1994-02-14 1995-08-22 Mitsui Constr Co Ltd コンクリートのひび割れ防止施工方法
US5743065A (en) * 1995-10-13 1998-04-28 Dolese Brothers Co. Method for reducing stress cracks at re-entrant corners of a concrete slab
US5857302A (en) * 1997-04-02 1999-01-12 Lill; Deryl L. Concrete crack control system
JP2000248743A (ja) * 1999-03-03 2000-09-12 Shimizu Corp マスコンクリートの打設方法
JP2001140363A (ja) * 1999-09-02 2001-05-22 Ohbayashi Corp コンクリート部材におけるひび割れ制御構造

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Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0748880A (ja) * 1993-08-09 1995-02-21 Fujita Corp 鉄筋コンクリート壁状構造物のひび割れ誘発目地装置
JPH07127008A (ja) * 1993-11-05 1995-05-16 P S Co Ltd 連続コンクリート舗装におけるひび割れ誘発部の構築方法
JPH07224535A (ja) * 1994-02-14 1995-08-22 Mitsui Constr Co Ltd コンクリートのひび割れ防止施工方法
US5743065A (en) * 1995-10-13 1998-04-28 Dolese Brothers Co. Method for reducing stress cracks at re-entrant corners of a concrete slab
US5857302A (en) * 1997-04-02 1999-01-12 Lill; Deryl L. Concrete crack control system
JP2000248743A (ja) * 1999-03-03 2000-09-12 Shimizu Corp マスコンクリートの打設方法
JP2001140363A (ja) * 1999-09-02 2001-05-22 Ohbayashi Corp コンクリート部材におけるひび割れ制御構造

Also Published As

Publication number Publication date
KR20070028562A (ko) 2007-03-12
EP1759070A1 (fr) 2007-03-07
US20080022622A1 (en) 2008-01-31
GB2429721B (en) 2009-07-22
AU2005257680B2 (en) 2008-12-11
CN1981099B (zh) 2010-09-29
CN1981099A (zh) 2007-06-13
AU2005257680A1 (en) 2006-01-05
GB2429721A (en) 2007-03-07
NZ533777A (en) 2004-09-24
JP2008503672A (ja) 2008-02-07
CA2573502A1 (fr) 2006-01-05
GB0700389D0 (en) 2007-02-14

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