JP2008267087A - Concrete panel with large size tile and its construction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a concrete panel with a large size tile, and its construction method, capable of firmly anchoring a large size tile of a thin thickness in a concrete skeleton. <P>SOLUTION: An anchor bolt 4 is installed in one place of a reverse surface 3a of the large size tile 3. A head part (a locking part) 4a arranged on one end side of this anchor bolt 4 is held between the large size tile 3 and a back guard 7 joined to its reverse surface 3a. The other end side is embedded in the concrete skeleton 2 in a state of penetrating through the back guard 7. Mutually opposed annular grooves 3b and 6a surrounding the head part 4a when viewed from the thickness direction of the large size tile 3, are respectively arranged on an opposed surface of the large size tile 3 and the back guard 7. A ring anchor (an annular reinforcing material) 7 is fitted in these annular grooves 3b and 6a so as to straddle both. An insulating layer 10 having rubber elasticity is arranged between the large size tile 3, the back guard 7 and the concrete skeleton 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a concrete panel with a large tile in which large tiles are integrally provided on a concrete panel, and a technique related to the construction method.

  A conventional tiled concrete panel is manufactured, for example, by laying tiles in advance in a formwork, and then placing ready-mixed concrete by placing bars. This construction method is called the direct PCa construction method, and the back surface of the tile to be laid is formed in a concavo-convex shape and is provided with a plurality of dovetail grooves called back feet, and these back feet are formed on the concrete frame. The tile is fixed to the concrete frame by the frictional force by entering the state (see, for example, Patent Document 1).

  Such a tiled concrete panel manufactured by the direct PCa construction method may be deformed due to thermal expansion under the influence of air temperature or solar radiation. Usually, the thermal expansion coefficient of a concrete frame is higher than that of a tile, and there is a risk that the tile with less deformation than a concrete frame may be stressed and cracked, so the tile is less than about 300 mm square, which is not easily affected by the difference in thermal expansion. Sizes are used.

On the other hand, when using large tiles, apply a back surface treatment agent to form an insulating layer on the back of the tile, fix a deformable fixing hardware, and place concrete after placing the reinforcement. The tile is fixed to the concrete frame by embedding the fixing hardware in the concrete frame. The tiled concrete panel formed as described above can relieve the stress of the tile due to the difference in thermal expansion by the insulating layer and the fixing hardware. Large size tiles may cause a major accident if they are peeled off, so they are generally used in the lower floors of the second to third floors, especially when used as outer walls.
Japanese Patent Laid-Open No. 7-112415 (2nd page, FIG. 2)

  In order to attach the fixing hardware as described above, a certain thickness of the tile is necessary (thickness exceeding 15 mm as a guide), and it is difficult to attach the fixing hardware to a thin tile, and it cannot be used in a large plate. There is inconvenience.

  Accordingly, an object of the present invention is to provide a concrete panel with a large-size tile that can firmly fix a large-size tile having a small thickness on a concrete frame, and a construction method thereof.

  The concrete panel with large slab tiles according to claim 1, wherein the large sized tiles having a small thickness are integrally fixed to a concrete frame, and the anchor for anchoring is provided at one place on the back surface of the tile. The fixing portion provided on one end side of the anchor for anchoring is held between the tile and the anchor mounting plate coupled to the back surface, and the other end side is penetrated through the anchor mounting plate. An annular groove embedded in the concrete frame in a state and surrounding the locking portion when viewed from the thickness direction of the tile and facing each other on the opposing surfaces of the tile and the anchor mounting plate, respectively. An annular reinforcing material is bonded so as to straddle both in the annular grooves, the tile and the anchor mounting plate, and the concrete frame Between, it is characterized by providing an insulating layer having a rubber elasticity.

  According to the large tiled concrete panel according to claim 1, since the connection between the anchor mounting plate and the tile is reinforced by the annular reinforcing material, the locking portion is held between them. The fixing anchors can be made robust. In addition, since the anchor mounting plate is coupled to the back surface of the tile and the annular groove into which the annular reinforcing material is fitted is formed in both the tile and the anchor mounting plate, the tile having a small thickness is formed. Again, the anchor mounting plate can be firmly coupled. Therefore, the large-sized decorative plate having a small thickness can be firmly fixed to the concrete frame. Further, since the annular reinforcing member is fitted over the annular grooves of both the tile and the anchor mounting plate, the shearing force generated between the tile and the anchor mounting plate is prevented. Shows high strength. That is, the strength against shearing force generated between the tile and the concrete frame can be increased. In addition, since the anchor for anchoring is provided at one place, deformation due to thermal expansion of the tile is not restrained, and the stress applied to the tile is mitigated by the thermal expansion difference from the concrete frame by the insulating layer. can do.

  In addition, the large-sized tile having a small thickness indicates a size having a size of about 300 mm square to 600 square and a thickness of 15 mm or less as a guide. The annular reinforcing material is not particularly limited but is preferably metallic. In particular, stainless steel having excellent corrosion resistance and mechanical properties is suitable, and various shapes such as a square, a circle, and an ellipse can be used, and it is not necessary that the entire circumference is completely connected. That is, it is also possible to have a shape with a cut in part.

  The concrete panel with large-sized tiles according to claim 2, wherein a tile holding member protruding in the direction of the concrete body and embedded in the concrete body is attached, and the holding member is positioned at least between the tile and the concrete body. It is characterized in that the portion to be made has elasticity.

  According to the concrete panel with a large tile according to claim 2, the tile is fixed to the concrete frame at least at two points of the fixing anchor and the holding member. Since the rotation around the anchor is constrained, it is possible to prevent a shearing force due to the rotation from occurring between the tile and the concrete panel. In addition, since the holding member has elasticity at least in a portion located between the tile and the concrete frame, stress applied to the tile due to a difference in thermal expansion from the concrete frame can be reduced. . Furthermore, the strength against the tensile force in the thickness direction of the tile can be strengthened, and when the tile is broken, not only the anchor for fixing but also the tile that is broken by the holding member is held in the concrete frame. Can be prevented from falling.

  The concrete panel with large sized tiles according to claim 3 uses a coiled spring as a holding member, one end of the coiled spring is fixed to the back surface of the tile, and an annular cover rubber is provided outside the coiled spring. Is mounted in contact with the back surface of the tile, and a liquid agent having rubber elasticity after curing is filled inside the cover rubber.

  According to the concrete panel with a large tile according to claim 3, it is avoided that the one end of the coiled spring is buried in the concrete frame by the cover rubber and the liquid agent filled therein. Can do. Thereby, the elasticity of the said one end part of the said coil-shaped spring is not impaired, The stress concerning the said tile by the thermal expansion difference with the said concrete frame can be relieved.

  According to a fourth aspect of the present invention, there is provided a large-sized tiled concrete panel characterized in that the annular groove and the annular reinforcing material are annular. According to the concrete panel with a large size tile of claim 4, the shear generated between the tile and the anchor mounting plate by making the annular groove into an annular shape and making the annular reinforcing member into an annular shape. The force can be exerted uniformly regardless of the direction in which the force works. Further, stress concentration due to shear force is less likely to occur. Thereby, the intensity | strength with respect to the shear force produced between the said tile and the said concrete frame can be increased.

  The concrete panel with large-sized tiles according to claim 5 is characterized in that the tiles are square, the anchoring anchor is disposed at the center of the back surface of each tile, and the holding members are respectively disposed at the four corners of the back surface. .

  According to the concrete panel with a large tile of claim 5, the anchor for fixing is attached to the position of the center of gravity of the tile, and the tile can be fixed to the concrete frame in a stable state. In addition, by arranging the holding members at the four corners of the back surface of the tile, the rotation of the tile around the anchor for anchoring can be effectively restrained, and between the tile and the concrete panel. The shearing force due to the rotation can be prevented. And when the tile is broken, not only the anchor for fixing but also the tiles broken by the holding members at the four corners can be held on the concrete frame to prevent the fall.

  The concrete panel with a large tile according to claim 6 is characterized in that the size of the tile is about 300 mm square or more. According to the concrete panel with large sized tiles of this sixth aspect, even a large sized tile having a size of about 300 mm square or more can be firmly fixed to the concrete panel.

  The method for constructing a concrete panel with large sized tiles according to claim 7 is a method for constructing a concrete panel with large sized tiles, in which a large sized tile having a small thickness and a concrete frame are fixed integrally, on the back surface of the tile. While forming the first annular groove, while forming a second annular groove corresponding to the first annular groove on one surface of the anchor mounting plate, and forming a through-hole inside the second annular groove, the tile of the tile At one place on the back surface, a fixing portion provided at one end is adhered to the inside of the first annular groove to attach a fixing anchor, and an annular reinforcing material is fitted into the first annular groove, and the back surface of the tile. Next, the fixing anchor is inserted into the through hole by adhering the one surface of the anchor mounting plate to the back surface of the tile, and the second ring. The annular reinforcing material is fitted into the groove so that the annular reinforcing material straddles the first annular groove and the second annular groove, and the anchor for fixing is used as the locking portion for the tile and the anchor. A back-surface treatment agent is formed between the back surface of the tile and the surface of the anchor mounting plate. Apply, then lay a predetermined number of tiles in the mold with the back side up, seal the joints, place reinforcement and cast concrete, demold after the concrete curing It is characterized by that.

  In the construction method of the concrete panel with large-sized tiles according to claim 7, since the connection between the anchor mounting plate and the tile can be strengthened by the annular reinforcing material, the locking portion is interposed between them. The fixing anchor that is held can be made robust. Moreover, the anchor mounting plate is coupled to the back surface of the tile, and the first annular groove and the second annular groove into which the annular reinforcing material is fitted are formed in the tile and the anchor mounting plate, respectively. The anchor mounting plate can be firmly coupled to the tile having a small thickness. Thereby, the said large-sized decorative plate with a thin thickness can be firmly fixed with respect to the said concrete frame. Further, since the annular reinforcing member is fitted in a state straddling the first annular groove of the tile and the second annular groove of the anchor mounting plate, a shear force generated between the tile and the concrete frame is generated. The strength against can be increased. That is, the strength against the shearing force generated between the tile and the concrete frame can be increased. In addition, since the anchor for anchoring is provided at one place, deformation due to thermal expansion of the tile is not restrained, and stress applied to the tile is relieved by the thermal expansion difference from the concrete frame by the insulating layer. be able to.

  The construction method for a concrete panel with large slab tiles according to claim 8 is provided such that the first annular groove and the second annular groove are provided in an annular shape, while the annular reinforcing material is formed in an annular shape, and a cut is formed in a part thereof. It is characterized by forming.

  According to the construction method of the concrete panel with large sized tiles according to claim 8, since the diameter of the annular reinforcing member can be slightly changed by the cut, the first annular groove and the second annular groove And the annular reinforcing material can be fitted.

  The method for constructing a concrete panel with large-sized tiles according to claim 9 is characterized in that a concave mounting hole is formed on the back surface of the tile, and one end portion of a coiled spring is fitted and bonded to the mounting hole as a holding member. An annular cover rubber is mounted on the outside of the spring in a state of being in contact with the back surface of the tile, and the concrete is placed in a state where the back rubber is filled in the cover rubber. It is said.

  According to the construction method of the concrete panel with a large tile according to claim 9, the tile is fixed to the concrete frame at least at two points of the anchor for anchoring and the holding member. The rotation around the fixing anchor can be restricted, and the shearing force due to the rotation can be prevented from being generated between the tile and the concrete panel. Further, the strength against the tensile force in the thickness direction of the tile can be increased by the holding member. Moreover, by filling the cover rubber and the liquid agent on the inside thereof, the one end of the coiled spring can be avoided from being buried in the concrete case, so that the thermal expansion difference from the concrete case is different. The stress applied to the tile can be reduced.

  The method for enforcing a tiled concrete panel according to claim 10 is characterized in that the size of the tile is about 300 mm square or more. According to the tiled concrete panel of the tenth aspect, it is possible to obtain a tiled concrete panel in which large-sized tiles having a size of about 300 mm square or more are firmly fixed.

  The concrete panel with large tiles according to claim 1 is a high place such as an outer wall of an upper floor of a building because there is no fear of cracking or peeling off because the large tiles with a small thickness are firmly fixed on the concrete frame. Can be used.

  The large-sized tiled concrete panel according to claims 2 and 3 is less likely to be damaged by shearing force between the concrete frame and the concrete frame due to the rotation of the tile, so that accidents such as peeling can be avoided and safety can be improved. it can. In addition, cracking of the tile can be prevented. Further, even if the tile is cracked, the cracked tile can be held on the concrete frame by the fixing anchor and the holding member, so that it is difficult to peel off and the safety is high.

  The concrete panel with a large tile according to claim 4 has high strength against the shearing force generated between the tile and the concrete frame, so that the tile is not likely to be peeled off and the safety can be improved.

  The concrete panel with large sized tiles according to claim 5 is fixed in a stable state with respect to the concrete frame, and stress caused by the difference in thermal expansion is alleviated, so that the tiles are not easily peeled off or cracked. , Improve safety.

  The concrete panel with large sized tiles of claim 6 is thin and can be used as a wall material with peace of mind, even if large sized imported tiles are used.

  The construction method of the concrete panel with large sized tiles according to claim 7 is a concrete panel with tiles having high safety that can be used in a high place such as an outer wall of an upper floor of a building where a large sized tile having a small thickness is fixed. Can be provided. Moreover, since it can be manufactured in a factory or the like, it is possible to provide a high-quality concrete panel regardless of the weather or the like.

  Since the construction method of the concrete panel with the large size tile according to the eighth aspect can cope with a dimensional error between the annular reinforcing member and the first annular groove and the second annular groove, the design and manufacture are facilitated.

  The construction method of the concrete panel with large sized tiles according to claim 9 is a tile having high safety that can be used in a high place such as an outer wall of an upper floor of a building in which a large sized tile having a small thickness is fixed. It is possible to provide a concrete panel with a wall.

  The method for constructing a concrete panel with large-sized tiles according to claim 10 is used as a wall material with peace of mind, even if a large-sized tile, for example, a large-sized imported tile, is fixed, without being peeled off. It is possible to provide a concrete panel that can be used.

  An embodiment of a concrete panel with a large tile and its construction method according to the present invention will be described with reference to FIGS.

  The large tiled concrete panel 1 is a reinforced concrete plate used for an outer wall or the like of a building in which a plurality of large tiles 3 are integrally formed on the surface of a concrete frame 2 that has been laid.

  Each large-size tile 3 is made in Portugal and is formed in a square shape with a size of 298 mm long × 596 mm wide × 9.2 mm thick, and is fixed to the concrete frame 2 by anchor bolts (fixing anchors) 4 attached to the back surface. . The anchor bolt 4 uses M8 × 60 mm total screw (head diameter: 12 mm × head height: 4 mm, neck length: 56 mm), and a nut 5 for slipping prevention is screwed to the tip. The large tile 3 is attached to the back surface 3a as follows. A first annular groove 3b having an outer diameter of 42 mm, an inner diameter of 38 mm, and a depth of 5 mm centered on the center is formed on the back surface 3a of the large plate tile 3, and an anchor is provided at the center of the first annular groove 3b. An embedded hole 3c having a diameter of 12 mm and a depth of 5 mm for fitting the head (locking portion) 4a of the bolt 4 is formed. Further, a tile back guard (anchor mounting plate) 6 for fixing the anchor bolt 4 is provided, and the size thereof is a square of 50 mm square and has a thickness of 9.6 mm. A second annular groove 6a having an outer diameter of 42 mm, an inner diameter of 38 mm, and a depth of 5 mm is formed on one surface of the back guard 6, and a through hole 6b having a diameter of 10 mm is provided at the center of the second annular groove 6a. It has been.

  The head 4a of the anchor bolt 4 is adhered to the embedding hole 3c on the back surface 3a of the large tile 3 with an epoxy resin adhesive (light white viscous liquid), and the first annular groove 3b has an annular shape. A ring anchor (annular reinforcing material) 7 is fitted and bonded. The ring anchor 7 is made of stainless steel having an outer diameter of 40 mm, an inner diameter of 38 mm, and a height of 9.5 mm, and a cut 7a is formed in one place to cope with a dimensional error with the annular groove 3b (FIG. 2). It can be changed. The ring anchor 7 formed in this way is bonded in a state in which about half of the height direction is fitted in the first annular groove 3b. Then, the back guard 6 makes the surface on which the second annular groove 6a is formed and the back surface 3a of the large plate tile 3 face each other, passes the anchor bolt 4 through the through hole 6b, and the ring anchor 7 The large tile 3 is adhered to the back surface 3a of the large tile 3 with the portion protruding from the back surface 3a of the large tile 3 fitted in the second annular groove 6a.

  In this way, the nut 5 is screwed to the tip of the anchor bolt 4 attached to the large size tile 3. The head 4a of the anchor bolt 4 is held between the large plate tile 3 and the back guard 6, and the large plate tile 3 and the back guard 6 straddle the respective first annular groove 3b and second annular groove 6a. Since it is in a state of being firmly coupled via the ring anchor 7 fitted in this way, it is in a state of being firmly attached to the back surface 3 a of the large-size tile 3.

  On the other hand, spring anchors 8 for holding members are attached to the four corners of the back surface 3a of the large size tile 3, respectively. Each spring anchor 8 is made of stainless steel and has a length of 53 mm and an outer diameter of 13 mm and is attached as follows. Mounting holes 3d each having a diameter of 13 mm and a depth of 2 mm are formed at the four corners of the back surface 3a of the large tile 3, and one end of the spring anchor 8 is fitted into each mounting hole 3d and bonded with an epoxy resin adhesive. ing. Each of these spring anchors 8 is provided with a rubber ring 9 having an outer diameter of 15 mm, an inner diameter of 13 mm, and a height of 10 mm. The rubber rings 9 are arranged in contact with the back surface 3 a of the large plate tile 3. ing.

  Thus, the large-sized tile 3 to which the anchor bolt 4 and the spring anchor 8 are attached is fixed to the surface 2a of the concrete casing 2 by embedding the anchor bolt 4 and the spring anchors 8 at the four corners in the concrete casing 2. ing. An insulating layer 10 made of a polymer-modified epoxy resin-based back surface treatment agent (white fluid) is provided between the large size tile 3 and the back guard 6 and the concrete casing 2. The back surface treating agent also has adhesiveness. This insulating layer 10 has rubber elasticity, and can relieve stress on the large size tile 3 due to a difference in thermal expansion with the concrete casing 2. Further, the back surface treatment agent is also filled inside the rubber ring 9 attached to the spring anchor 8 to avoid the end of the spring anchor 8 on the large tile 3 side being embedded in the concrete frame 2. ing. Thereby, the stress can be alleviated also by the elasticity of the spring anchor 8. Similar to the anchor bolts 4, these spring anchors 8 also have a function of fixing the large plate tile 3 to the concrete frame 2.

  In this large-sized tile-equipped concrete panel 1, since the bonding strength between the large-sized tile 3 and the back guard 6 is enhanced by the ring anchor 8, the anchor bolt 4 is difficult to come off from the large-sized tile 3, and for the anchor The nuts 5 are screwed onto the bolts 4 and the spring anchors 8 at the four corners are embedded in the concrete housing 2, so that the large-size tile 3 is subjected to the tensile force in the thickness direction. High strength.

  Further, since the ring anchor 7 is fitted in a state straddling the first annular groove 3b of the large tile 3 and the second annular groove 6a of the back guard 6, it is possible to cope with a thin tile. Yes. Incidentally, the thickness of the conventional domestic large-sized tile is about 13 mm, whereas the thickness of the large-sized tile 3 of this embodiment is 9.2 mm.

  And since the ring anchor 7 is in the state straddling the 1st annular groove 3b and the 2nd annular groove 6a, it has high intensity | strength also with respect to the shear force produced between the large plate tile 3 and the concrete frame 2. In addition, since the ring anchor 7 has an annular shape, the strength is uniform even with respect to shear stress acting from all directions and stress concentration can be avoided. high.

  Therefore, even if the large plate panel 3 is firmly fixed to the concrete frame 2 and a difference in thermal expansion occurs between the large plate tile 3 and the concrete frame 2, there is no risk that the large plate panel 3 is peeled off or cracked. It is a large-sized tiled concrete panel 1 with high safety.

  When such a tiled concrete panel is used, for example, on the outer wall of a building, a temperature difference occurs between the tile and the concrete frame due to temperature, strong solar radiation, or the like. Since tiles and concrete enclosures have different coefficients of thermal expansion, a concrete enclosure with a higher coefficient of thermal expansion is usually more greatly deformed and stressed on the tiles, which may cause cracking or peeling. In particular, in the case of a thin tile, cracking and peeling are likely to occur. However, a robust anchor bolt 4 may be provided at one place of the large plate panel 3 as in the concrete panel 1 with the large plate tile of the present embodiment. If possible, the large panel 3 is not constrained with respect to the concrete frame 2, and thus cracking is unlikely to occur. Moreover, since the influence of the stress can be mitigated by the insulating layer 10 and the spring anchor 8, the occurrence of cracks can be effectively suppressed.

  Further, the large tiles 3 are difficult to peel off by the anchor bolts 4 and the spring anchors 8, and there is no risk of accidents such as peeling off, so that the large tiles 3 can be safely constructed on the outer wall of the upper floor. Further, even if the large sized tile 3 is cracked, the broken large sized tile 3 can be held on the concrete case 2 with the anchor bolts 4 and the spring anchors 8. Accidents that peel off are unlikely to occur.

  Next, the construction method of the large-sized tiled concrete panel 1 will be described.

  A first annular groove 3b for the ring anchor 7 is formed by a drilling machine on the back surface 3a of the large plate tile 3 with the center as a center, and an embedding hole 3c for the anchor bolt 4 is formed at the center of the first annular groove 3b. Form. Further, mounting holes 3d for the spring anchor 8 are formed at the four corners. On the other hand, a second annular groove 6a for the ring anchor 7 is formed by a drilling machine on one surface of the back guard 6 with the center as a center, and a through hole 6b through which the anchor bolt 4 is penetrated is formed at the center.

  Next, an adhesive is applied to the annular groove 3b, the embedding hole 3c, and the mounting hole 3d on the back surface 3a of the large size tile 3, and the ring anchor 7 is fitted into the first annular groove 3b to be bonded. At this time, even when a dimensional error is generated between the ring anchor 7 and the first annular groove 3b, the diameter can be slightly adjusted by the cut 7a provided in the ring anchor 7. The attached ring anchor 7 is in a state in which about half of its height direction protrudes from the back surface 3 a of the large plate tile 3.

  After the head 4a of the anchor bolt 4 is fitted and bonded to the embedded hole 3c, the back guard 6 is placed on the back surface 3a of the large plate tile 3 and the surface on the side where the second annular groove 6a is formed is large. The second annular groove 6a is fitted into the ring anchor 7 and bonded so that the anchor bolt 4 is inserted into the through hole 6b so as to face the back surface 3a of the plate tile 3. Thereafter, an adhesive is applied to the mounting holes 3d formed at the four corners of the back surface 3a of the large size tile 3, and one end of the spring anchor 8 is fitted and bonded.

  Then, after removing dust and the like on the back surface 3a of the large size tile 3, a masking tape (not shown) is applied around the back surface tile, and the back surface treatment agent is uniformly applied with a spatula or the like. At this time, the back surface treatment agent is uniformly applied also to the surface of the back guard 6. Then, a rubber ring 9 is attached to the outside of the spring anchor 8 so that the rubber ring 9 is in contact with the back surface 3a of the large plate tile 3, and the back surface treatment agent is also filled inside.

  In this way, the large size tiles 3 to which the anchor bolts 4 and the spring anchors 8 are attached are set in order in the mold 11 so as not to contact the mold 11. At this time, the large tiles 3 are not lifted by the anchor bolts 4 or the spring anchors 8, and the setting is performed while paying attention to the joint width and joints according to the layout of the large tiles 3.

  When the setting of the large size tiles 3 is completed, the backup material 12 is set between the large size tiles 3 (joint portions) according to the joint width. Then, as a secondary seal, the sealing material 13 is injected into the joint portion with a caulking gun and pressed with a spatula or the like to make the surface uniform with the back surface of the large plate tile. At this time, the sealing material is finished so as to overlap with the back surface treatment agent by about 5 to 10 mm (FIG. 4A).

  When the processing of the joint portion is completed, the reinforcing bars 14 are laid down so as not to apply an impact to the anchor bolt 4 and the spring anchor 8 (FIG. 4B). Then, cast concrete into the form 11 and steam cure at 60 ° C. or less (FIG. 4C). After confirming the strength of the concrete frame 2, be careful not to apply impact to the large tile 3 And demolding (FIG. 4D).

  A masking tape (not shown) is applied to the surface 3e of the large sized tile 3 of the concrete panel 1 with the large sized tile removed from the mold, and a sealing material 15 is injected into the joint as a primary seal. The sealing material 15 used for the primary seal is preferably a polysulfide type having excellent adhesion durability, weather resistance, and the like. When the sealing material 15 is cured, the masking tape is removed.

  By the way, when stocking the concrete panel 1 with large slab tiles formed in this way, pay attention to twisting and warping up to four layers, and put cushioning material on the surface 3e of the large slab tile 3 Avoid scratches.

  In addition, this invention can also be applied to decorative boards, such as a stone sticking panel other than a large-size tile.

The partial expanded sectional view which shows embodiment of the concrete panel with a large size tile concerning this invention. Explanatory drawing which shows the assembly point of the large size tile of the concrete panel with a large size tile shown in FIG. FIG. 3 is an assembly drawing of a large-sized tile of the concrete panel with large-sized tile shown in FIG. It is explanatory drawing which shows the construction method of the concrete panel with a large-size tile shown in FIG. 1, (a) is a figure of the state which laid the large-size panel in the formwork, (b) is a figure of the state which arranged the formwork (C) is a figure of the state which laid concrete in the formwork, (d) is a figure of the state which removed the mold.

Explanation of symbols

1 Concrete panel with large-sized tiles 2 Concrete frame 3 Large-sized tiles 3a Back surface 3b Annular groove 4 Anchor bolt (fixing anchor)
4a Head (locking part)
5 Nut 6 Back guard (anchor mounting plate)
6a annular groove 7 ring anchor (annular reinforcement)
10 Insulating layer

Claims (10)

In concrete panels with large tiles, where large-sized tiles with a small thickness are fixed integrally to the concrete frame,
A fixing anchor is attached at one place on the back surface of the tile, and a locking portion provided on one end side of the fixing anchor is between the tile and the anchor mounting plate coupled to the back surface. The other end side is embedded in the concrete frame in a state of penetrating the anchor mounting plate, and the opposing surfaces of the tile and the anchor mounting plate are respectively viewed from the thickness direction of the tile. An annular groove surrounding the locking portion and facing each other is provided, and an annular reinforcing material is bonded so as to straddle both in the annular groove, and the tile and the anchor mounting plate A concrete panel with large tiles, wherein an insulating layer having rubber elasticity is provided between the concrete frame and the concrete frame.   A holding member for the tile that protrudes in the direction of the concrete frame and is embedded in the concrete frame is attached to the back surface of the tile, and the holding member is at least a portion located between the tile and the concrete frame. The large-sized tiled concrete panel according to claim 1, wherein the concrete panel has elasticity.   A coiled spring is used as the holding member, and one end of the coiled spring is fixed to the back surface of the tile, and an annular cover rubber is attached to the back surface of the tile on the outside of the coiled spring. The concrete panel with large sized tiles according to claim 2, wherein the concrete panel is mounted in contact with the cover rubber, and a liquid agent having rubber elasticity after curing is filled inside the cover rubber.   The concrete panel with large sized tiles according to any one of claims 1 to 3, wherein the annular groove and the annular reinforcing material are in an annular shape.   3. The tile according to claim 2, wherein the tile is formed in a square shape, the fixing anchor is disposed at the center of the back surface of each tile, and the holding members are disposed at four corners of the back surface. A concrete panel with a large tile according to any one of -4.   The size of the tile is about 300 mm square or more, and the concrete panel with large sized tiles according to any one of claims 1 to 5. A construction method for a concrete panel with large tiles, in which a large-size tile with a small thickness and a concrete frame are fixed together,
While forming a 1st annular groove in one place of the back of the tile, a 2nd annular groove corresponding to the 1st annular groove is formed in one surface of an anchor mounting plate, and a through hole is formed inside the second annular groove. A fixing portion is attached to the inner surface of the first annular groove on the back surface of the tile, and a fixing anchor is attached, and an annular reinforcing material is fitted into the first annular groove. Adhering in a state of protruding from the back surface of the tile, and then adhering the one surface of the anchor mounting plate to the back surface of the tile, the fixing anchor is inserted through the through hole, and the first The annular reinforcing material is fitted into two annular grooves, the annular reinforcing material is bonded in a state straddling the first annular groove and the second annular groove, and the fixing anchor is attached to the locking portion. Tile and anchor mounting And the other end side is projected from the through hole, and then a back surface treatment agent for forming an insulating layer is applied to the back surface of the tile and the surface of the anchor mounting plate. Then, laying a predetermined number of tiles in the mold with the back side up, sealing the joints, placing reinforcement and placing concrete, and demolding after curing the concrete A construction method of concrete panels with large sized tiles, which is a feature.   8. The large ring according to claim 7, wherein the first annular groove and the second annular groove are provided in an annular shape, and the annular reinforcing member is formed in an annular shape, and a cut is formed in a part thereof. Construction method for concrete panels with plate tiles.   A concave mounting hole is formed on the back surface of the tile, and one end of a coiled spring is fitted and bonded to the mounting hole as a holding member, and an annular cover rubber is attached to the outside of the coiled spring. 9. The concrete panel with large sized tiles according to claim 7 or 8, wherein the concrete is placed in a state of being in contact with the back surface, and the concrete is placed in a state in which the back surface treatment agent is filled in the cover rubber. Construction method.   The construction method of a concrete panel with large sized tiles according to any one of claims 7 to 9, wherein the size of the tile is about 300 mm square or more.

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