CN1981099B

CN1981099B - Crack control in cementitious materials

Info

Publication number: CN1981099B
Application number: CN2005800204559A
Authority: CN
Inventors: 克里斯托弗·约翰·福瑟吉尔·库克
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-06-25
Filing date: 2005-06-10
Publication date: 2010-09-29
Anticipated expiration: 2025-06-10
Also published as: JP2008503672A; AU2005257680A1; GB2429721A; EP1759070A1; US20080022622A1; GB0700389D0; GB2429721B; CN1981099A; CA2573502A1; AU2005257680B2; NZ533777A; WO2006001713A1; KR20070028562A

Abstract

Embodiments of the invention relate to an apparatus (1) for controlling cracks in a cementitious material, such as a concrete body, having an elongate base portion (2), elongate side wall portions (3) and (4) extending from the base portion and inclined to one another, and apertures in the side wall portions. When a means for controlling cracking is used, it may be positioned bottom down so that a cementitious substance susceptible to cracking can be poured around and at least partially through it so that cracks formed in the cementitious substance occur at or near the means for controlling cracking.

Description

Crackle control in the binding material

Technical field

The present invention relates to control the device of crackle in the binding material, for example in concrete.

Background technology

Under the situation of concrete construction, when it solidified, concrete main body crackle was general.At this crackle normally inevitably simultaneously, when processing a large amount of concrete, from the viewpoint of building, hope can be controlled the position of crackle.Therefore, the purpose of at least one embodiment of the present invention is to have at least the crackle that benefits in the control concrete, or offers the useful selection of the public at least.

Be appreciated that and if ought use term here about direction, when for example " making progress " etc., will be understood that it is with reference to the object correlation when service orientation usually, except as otherwise noted.

Be appreciated that also term " comprises " and derivative, for example " include " etc., should be interpreted as the meaning of " contain or comprise "---promptly not to be used for restriction.

Summary of the invention

According to an aspect of the present invention, the device of control bonding material main body internal fissure is provided, the device of this control crackle comprises elongated bottom, the elongate side wall part of extending and tilting mutually from the bottom, with the hole in the sidewall sections, the device of this control crackle constitutes like this, when it uses, it can be provided with downwards the bottom, be poured in around it so that be prone to the adhesive mass-energy of crackle, and pass it at least in part, so that subsequently near the inner crackle that forms of bonding material occurs in the device place of control crackle or its.

Preferably, this bonding material comprises concrete.

Preferably, this sidewall sections is with the common triangle that forms when cross section is watched of the part of therebetween bottom.

Preferably, an extension is arranged, its summit from this triangle extends upward.

Preferably, the device of control bonding material main body internal fissure combines with joint, makes up with the device with a plurality of described control crackles.

According to a further aspect of the invention, the device of control bonding material main body internal fissure is provided, this device has elongated bottom, the upwardly extending elongated wall part from the bottom, so that the bottom becomes inverted T-shape substantially with wall part, with the one or more holes in the wall part, the device of control crackle constitutes like this, when it uses, it can be provided with downwards the bottom, be poured in around it so that be prone to the adhesive mass-energy of crackle, and pass it at least in part, so that subsequently near the inner crackle that forms of bonding material occurs in the device place of control crackle or its.

Preferably, this bonding material comprises concrete.

Preferably, these one or more holes constitute this wall or wall part about 50% or more, decide as the case may be.

According to a further aspect in the invention, the device of control bonding material main body internal fissure is provided, this device comprises the part of two elongated basic one-tenth V-types, the elongated wall part, this elongated wall part internally extends and extends to the summit of another V-type part from the summit of a V-type part, with the one or more holes in this wall part, the device of control crackle so constitutes, when it uses, it can be arranged to make the adhesive mass-energy that is prone to crackle to be poured in around it, and pass this one or more holes at least in part, so that subsequently near the inner crackle that forms of bonding material occurs in the device place of control crackle or its.

Preferably, the summit of these two V-type parts is towards essentially identical direction.

Alternatively, the summit of this V-type part is towards opposite substantially direction.

Alternatively, a V-type part is basically greater than another V-type part.

Preferably, these one or more holes at least this wall part of basic comprising superficial area 50%.

According to a further aspect in the invention, the device of control bonding material main body internal fissure is provided, this device comprises elongated bottom and the extended elongated wall part from this bottom, so that bottom and wall part basically form the right angle, with the one or more holes in the wall part, this hole at least the basic comprising wall part 50%, the device of control crackle constitutes like this, when it uses, it can be placed to the adhesive mass-energy that easy crackle occurs is poured in around it, and pass one or more holes at least in part, so that subsequently near the inner crackle that forms of bonding material occurs in the device place of control crackle or its.

According to a further aspect in the invention, provide a kind of method, control the crackle in the bonding material that is prone to crackle, may further comprise the steps:

I) obtain the device of any described control crackle of aspect as described above, place it in crackle forms in the bonding material of expection position or near the position it then;

A large amount of bonding materials ii) is set so that it extends around wall or wall part and passes wall or wall part to small part, decide as the case may be and

Crackle is formed in bonding material near the control device place of crackle or its.

Preferably, this bonding material comprises concrete.

I) obtain the crackle controller, wherein the crackle controller comprises bottom, extended one or more walls from the bottom, one or more holes in one or more walls, and crackle controller layout is on the throne, in this position, in the position that the crackle in bonding material of expection forms

A large amount of bonding materials ii) are set so that its extend around described one or more walls and pass at least in part one or more walls and

Crackle is formed in bonding material near crackle controller place or its.

Preferably, one or more holes constitute at least one or more walls superficial area 50%.

Description of drawings

Optimal ways more of the present invention will utilize example now and reference will be made to the accompanying drawings, wherein:

Fig. 1 is the cross-sectional view of concrete cracks controller,

Fig. 2 is the lateral view of the crackle controller of Fig. 1,

Fig. 3 is the plan view of the crackle controller among Fig. 1 and Fig. 2,

Fig. 4 is the stereogram of another kind of concrete cracks controller,

Fig. 5 is the end view of the crackle controller of Fig. 4,

Fig. 6 is the cross-sectional view of straight line connector,

Fig. 7 and 8 is respectively the lateral view and the plan view of four-way connector,

Fig. 9 and 10 is respectively the lateral view and the plan view of three-way connector,

Figure 11 and 12 be respectively the lateral view of two-way angle connector and plan view and

Figure 13 and 14 is respectively the lateral view and the plan view of threeway t connector,

Figure 15 to 18 is the stereogram and the end view of another kind of concrete cracks controller.

Specific embodiment

Referring to Fig. 1,2 and 3, concrete cracks controller 1 is an elongate articles, and it has bottom 2, and this bottom has from the bottom obliquely crossing two elongate side wall 3 and 4.Therefore, controller 1 is a hollow, and cross section is generally triangle.Shown in Fig. 2 and 3,

sidewall

3 and 4 has the elongated hole 5 at a plurality of intervals.As can be seen, extend a little in each side of

wall

3 and 4 bottom 2, and the summit of wall has vertical extension 6.

When controller 1 in use, it can be placed downwards bottom 2, then with a large amount of concrete spoutings around it.The basic at least overlay controller 1 of concrete, and by hole 5, pass therethrough.If desired, also the reinforcing bar (not shown) can be passed hole 5.When concrete setting, it is easily at controller 1 place or occur crackle in its vicinity.Because the concrete main body of controller both sides has basically than controller and/or passes the fact of the bigger quality of concrete part of controller, helps this controlled crackle.

Figure 4 and 5 have shown another kind of concrete cracks controller 7, and it has bottom 8 and upwardly extending wall 9.The bottom becomes inverted T-shape substantially with wall.As shown, controller 7 has the elongated hole 10 at a plurality of intervals.Described selectable crackle controller 7 is used to control concrete cracks in the mode very identical with above-mentioned controller, is about to bottom 8 and places down, then concrete perfusion and run through controller around.Also reinforcing bar can be passed hole 10.The crackle that forms in the concrete easily occurs near controller 7 places or its, because it forms one or more weakening region in concrete.

Preferably, if desired,

controller

1 and 7 respectively is provided with aperture in its

bottom

2 or 8, so that it can be fixed in basal plane.Preferably, if necessary, these

bottoms

2 and 8 are flat substantially, so that

controller

1 and 7 can easier maintenance level.

Under the situation of the controller of mentioning at first 1, by

wall

3 and 4 and the triangle that forms of the bottom of bottom 2 measure of intensity and stability is provided, for example stop the transverse movement of undesirable wall.

Controller

1 and 7 can be made by any suitable material, for example by steel, and plastics, or common resinous material is made.

When

controller

1 and 7 in use, in some cases, wish it is connected to other such controller 1 and 7.In order to reach this purpose, it can use with suitable straight line, angle or T-shape joint as required.Figure 6 shows that straight line connector 11, it can be used for connecting two controllers of mentioning at first 1.More particularly, two crackle controllers 1 can be installed on the connector 11 as sleeve pipe, and each controller is installed in the opposite end of connector 11.Connector 11 can be established flange 12 at its each end, so that length restriction can be installed within the crackle controller 1 for it.

Fig. 7 and 8, Fig. 9 and 10, Figure 11 and 12, and Figure 13 and 14 shown the connector that other are different, it can use with reference Fig. 1,2 and 3 described crackle controllers 1.Under each situation, crackle controller 1 is installed on the connector as sleeve pipe.Preferably, each in these connectors all has one or more holes, so that concrete or similar item can enter the inside and/or pass them.

Alternatively, above-mentioned

crackle controller

1 and 7 and various connector form by the steel or the plastics of 2.0-3.5mm (or preferably by 2.5-3.0mm) specification.The specification that can select material therefor is to be fit to the size at required shrinkage joint.

Preferably, the

hole

5 and 10 in the crackle controller account for greatly sidewall 50% or more, and more preferably account for its 52%.

Be appreciated that at least some embodiment of the present invention can make it form controllable shrinkage joint in concrete main body or similar item.The shrinkage joint can be under concrete surface corresponding to the position of crackle controller.

Figure 15,16,17 and 18 have shown according to the present invention the crackle controller 13,14,15 and 16 of optional embodiment.Each figure has shown each crackle controller 13,14,15 or 16 with end view and stereogram.Each crackle controller 13-16 is applicable to various application, for example is used for the turning of concrete panel, with the crackle of controlling the there or the crackle that is controlled at the place, floor.Concrete can utilize gunite or any other suitable manner to be applied to controller 13-16.

As Figure 15, shown in 16 and 18, controller 13,14 and 16 respectively has two V-type end parts and intermediate connecting wall part.Wall part is provided with the hole, so that concrete or some other binding materials can pass therethrough.Under the situation of controller 13 and 14, the summit of two V-type end parts is pointed to same direction and is connected in its wall part on its summit, as the case may be, and in the inside or outside connection the on summit.In the situation of controller 16, the summit of two V-types part point to mutually away from direction, and interconnect by its wall part in the inside on this summit.Controller 15 as shown in figure 17 is right angle forms, and the one side at angle is as the bottom, and another side is as the wall part that wherein has the hole.Preferably, for all controller 13-16, in all cases, its hole at least the basic comprising wall part superficial area 50%.

When utilizing example to describe preferred forms more of the present invention, should be appreciated that and under the situation that does not break away from the accessory claim scope, can make amendment or improve.

Claims

1. A means for controlling cracks in a body of bonding substance, said means for controlling cracks comprising an elongated base, an elongated side wall portion extending from the base and inclined towards one another, and one or more of said side wall portions The hole, said means for controlling cracks, is constructed so that when it is in use, it can be placed with the bottom down, so that the bonding substance prone to cracks can be poured around it and freely pass through it, that is, through one or A plurality of holes, so that subsequent formation of cracks within the bonding substance occurs at or near said crack control means.

2. The device for controlling cracks in a body of cementitious substance according to claim 1, wherein said cementitious substance comprises concrete.

3. The device for controlling cracks in a body of bonding substance according to claim 1 or 2, wherein said side wall portions together with a portion of the base therebetween form a triangular shape when viewed in cross section.

4. The device for controlling cracks in a body of bonding substance according to claim 3, wherein there is an extension extending upwardly from the apex of said triangular shape.

5. The device for controlling cracks in a body of bonding substance according to claim 1, which is combined with a joint to combine a plurality of said devices for controlling cracks.

6. A device for controlling cracks in a body of bonding substance, said device comprising: an elongated base; an elongated wall portion extending upwardly from the base such that said base and said wall portion form a substantially inverted "T" type; and one or more holes in said wall portion, said crack control means being constructed so that, when in use, it can be set bottom down so that a bonding substance prone to cracks can be poured around it , and freely pass through it, ie through one or more holes, so that the subsequent formation of cracks inside the bonding substance occurs at or near said crack-controlling means.

7. The device for controlling cracks in a body of cementitious substance according to claim 6, wherein said cementitious substance comprises concrete.

8. The device for controlling cracks in a body of cementitious substance according to claim 1, wherein said one or more pores constitute 50% or more of said wall or wall portion, as the case may be.

9. A device for controlling cracks in a body of bonding substance, said device comprising two elongated, substantially V-shaped sections, an elongated wall section and one or more holes in said wall section, said The elongated wall portion extends from the inside of the apex of one V-shaped portion and extends to the apex of the other V-shaped portion, said crack control means being constructed so that when it is in use it can be arranged so that crack-prone bonds A substance can be impregnated therearound and at least partially through said one or more apertures so that subsequent formation of cracks within the bonded substance occurs at or near said crack control means.

10. The crack control device of claim 9, wherein the vertices of the two V-shaped portions point in substantially the same direction.

11. The crack control device of claim 9, wherein the vertices of the V-shaped portions point in substantially opposite directions.

12. A crack control device according to claim 9, 10 or 11, wherein one V-shaped portion is substantially larger than the other V-shaped portion.

13. The crack control device of claim 9, wherein said one or more holes constitute at least 50% of the surface area of said wall portion.

14. A device for controlling cracks in a body of bonding substance, said device comprising an elongated base and an elongated wall portion extending from said base such that said base and wall portion form a right angle, said device further comprising One or more holes in said wall portion, said holes constituting at least 50% of said wall portion, the means for controlling cracking is constructed so that, when used, it can be arranged so that a bonding substance prone to cracking can Pouring around it and at least partially through the hole or holes so that subsequent crack formation within the bonding mass occurs at or near said crack control means.

15. A method of controlling cracks in a crack-prone bonding substance comprising the steps of:

i) obtaining a crack control device as claimed in any one of the preceding claims, which is then placed at or adjacent to the location of expected crack formation in the bonding substance;

ii) providing a mass of bonding substance so as to extend around and through said wall or wall portion, as the case may be, and

iii) causing cracks to form within the bonding substance at or near the crack-controlling means.

16. The method of claim 15, wherein the cementitious substance comprises concrete.

17. A method of controlling cracks in a crack-prone bonding substance comprising the steps of:

i) Obtaining a crack controller, wherein the crack controller comprises a base, one or more walls extending from the base, and one or more holes in the one or more walls, and placing the crack controller in The expected location of crack formation in the bonded substance,

ii) providing a plurality of bonding substances such that they extend around said one or more walls and pass freely through said one or more walls, and

iii) causing a crack to form within the bonding substance at or near the crack controller.

18. The method of claim 17, wherein the one or more pores constitute at least 50% of the surface area of the one or more walls.