JP2010117210A - Apparatus and method for testing shear bond strength of tile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus and a method for testing shear bond strength of a tile capable of being appropriately installed as an apparatus, reasonably applying shearing stress to bonded portions of a tile as a method, improving testing accuracy and definitely testing shear bond strength itself of a tile. <P>SOLUTION: The apparatus includes: a force applying attachment 5 fixed to a surface X of a tile Ta to be tested; repulsive force receiving attachments 6, 7 respectively fixed to two or more tiles Tb other than the tile Ta to be tested; a connecting tool 8 provided between these repulsive force receiving attachments to integrate these repulsive force receiving attachments; and a force applying means 9 provided between the force applying attachment and either of the repulsive force receiving attachments to take the repulsive force to the repulsive force receiving attachment and apply the force to the force applying attachment so as to input into the tile to be tested a force along its surface. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention can be appropriately installed as an apparatus, and can reasonably apply a shearing force to a tile bonding portion as a method, thereby improving the test accuracy and the shear bonding strength of the tile itself. The present invention relates to a shear bond strength test apparatus and a test method for a tile that can be accurately tested.

  A tile bonded to a tile bonding surface such as a wall may be peeled off due to a shearing action caused by a difference in thermal expansion between the tile and the underlying concrete due to solar radiation, so it is desirable to test the shear bonding strength of the tile.

  In particular, as a technique for carrying out this kind of test for actual construction objects, not in a test room, for example, in Patent Document 1, an adhesion performance test for exterior tiles of an existing building is performed by one worker. In order to enable easy measurement at the actual site, every other exterior tile of the building was subjected to a tensile test in the vertical direction, and the exterior tile traces removed by the tensile test were downsized. An in-situ shear tester is installed, and by applying a force in a horizontal direction to the exterior tile with the in-situ shear tester, an adhesion performance test in the shear direction of the exterior tile is performed.

Specifically, a horizontal force is applied to both the pasting mortar and the exterior tile in a laminated state on the base concrete so that the exterior tile is peeled off together with the pasting mortar.
JP 2007-170887 A

  In the background art, the exterior tile trace is irregular ground, and a testing machine is installed on the irregular ground. Is difficult, and there is a possibility that a test error may occur. Moreover, it takes time to smooth the irregular ground of the exterior tile trace, and the test cannot be carried out smoothly.

  In addition, since the test is performed by applying a horizontal force to both the exterior tile and the pasted mortar, the shear failure between the base concrete and the pasted mortar can be evaluated, but the shear adhesive strength of the tile, that is, the tile It was not possible to evaluate the aspect in which the back foot of the adhesive peeled off from the pasted mortar, the cohesive failure of the pasted mortar, etc., and the test machine and the test method were unsatisfactory.

  The present invention was devised in view of the above-mentioned conventional problems, and can be appropriately installed as a device, and can also apply a shearing force to a tile bonding portion reasonably as a method. An object of the present invention is to provide a tile shear bond strength test apparatus and a test method capable of accurately testing the test accuracy and the tile shear bond strength itself.

  A tile shear bond strength test apparatus according to the present invention is an apparatus for testing the shear bond strength of a tile bonded to a tile bonding surface of a building member, the force attachment fixed to the surface of the tile to be tested, and the above A reaction force receiving attachment fixed to each of two or more tiles other than the test target tile, a connecting jig provided between the reaction force receiving attachments and integrating these reaction force receiving attachments, Provided between the reaction force receiving attachment and the force attachment, and in order to input a force along the surface of the test target tile, a reaction force is applied to the reaction force receiving attachment to the force attachment. And a force applying means for applying force.

  A force meter that displays a force value of the force applying means and a displacement meter that displays a displacement amount of the force attachment by the force means are provided.

  The force applying means is held by the reaction force receiving attachment.

  The reaction force receiving attachment is arranged on both sides of the test target tile along the direction of the force applied by the force applying means.

  The connecting jig extends between the reaction force receiving attachments arranged on both sides of the test target tile, and the force attachment is provided with a slide guide that is slidably engaged with the connecting jig. It is characterized by.

  The method for testing the shear bond strength of tiles according to the present invention is a method for testing the shear bond strength of tiles bonded to the tile bonding surface of a building member, wherein a force attachment is fixed to the surface of the tile to be tested, and The reaction force receiving attachment is fixed to another tile having an adhesion area exceeding the bonding area of the tile to be tested, and then the reaction force is applied by a force applying means provided between the reaction force receiving attachment and the force attachment. A reaction force is applied to the receiving attachment, and the force is applied to the force attachment to apply a force along the surface of the tile to be tested.

  Before the test, the joint material around the tile is removed in advance.

  In the tile shear bond strength test apparatus and test method according to the present invention, the apparatus can be properly installed, and as a method, the shear force can be reasonably applied to the tile adhesion point, and the test accuracy And the tile shear bond strength itself can be accurately tested.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a preferred embodiment of a tile shear bond strength test apparatus and test method according to the present invention will be described in detail with reference to the accompanying drawings. A tile shear bond strength test apparatus (hereinafter simply referred to as “test apparatus”) and a test method thereof according to the present embodiment are provided on a wall, a floor, or a ceiling of a test body or an existing building, in a horizontal direction or a vertical direction, or The present invention can be applied to any tile arranged in the vertical and horizontal directions.

  1 is a side sectional view of a test apparatus 1 according to the present embodiment, FIG. 2 is a plan view thereof, FIG. 3 is a sectional view taken along line AA in FIG. 1, and FIG. Sectional drawing and FIG. 5 are CC arrow line views in FIG.

  The tiles Ta, Tb, and Tc are pasted through a pasting mortar 3 constructed on the surface of the ground concrete 2 such as a wall as a tile adhesion surface 4. The shear failure on the tile adhesion surface 4 is usually between the soles of the tiles Ta, Tb, Tc and the mortar 3, the cohesive failure of the mortar 3, and the interface between the mortar 3 and the surface of the underlying concrete 2 that is the tile adhesion surface 4. Observed at. Any of the plurality of tiles Ta, Tb, and Tc pasted is set as the test target tile Ta.

  The test apparatus 1 mainly includes a force attachment 5, two or more reaction force receiving attachments 6 and 7, a connecting jig 8 that connects the reaction force receiving attachments 6 and 7 together, and a force applying means 9. Prepare.

  The force attachment 5 is fixed to the surface X of the test target tile Ta. The force attachment 5 includes a base 10 that is fixed to the surface X of the test target tile Ta with an adhesive, a lower block 11 that is mounted on the base 10, and a lower block 11 that is mounted on the lower block 11. 11, an upper plate 13 that is fastened to the base plate 11, a first fastening bolt 14 that passes through the lower block 11 from the upper plate 13 and is screwed to the base 10, and integrates the base 10 to the upper plate 13. A washer 15 is provided between the block 11 and the block 11.

  The lower block 11 is formed with a pair of grooves 16 that are parallel to each other with the first fastening bolts 14 interposed therebetween, and these grooves 16 are covered with the upper plate 13 so as to be slidably engaged with the connecting jig 8. A pair of through-hole-shaped slide guides 17 is formed.

  The reaction force receiving attachments 6 and 7 are individually fixed to two or more other tiles Tb other than the test target tile Ta. In this embodiment, the two reaction force receiving attachments 6 and 7 are vertically or horizontally arranged with respect to the test target tile Ta and are located on both sides of the test target tile Ta with a single tile Tc therebetween. Each of the tiles Tb is disposed.

  In the illustrated example, the left main reaction force receiving attachment 6 is disposed above the lower plate 19, the base 18 that is fixed to the surface of the tile Tb with an adhesive, the lower plate 19 that is mounted on the base 18. An upper block 20, a second fastening bolt 21 that passes through the lower plate 19 from the upper block 20 and is screwed to the base 18 to integrate the base 18 to the upper block 20, the base 18 and the lower plate 19, The washer 22 is mounted between the two.

  The main reaction force receiving attachment 6 is provided with a plate-like connecting jig 8 sandwiched between the lower plate 19 and the upper block 20. The upper block 20 is screwed with a mounting bolt 23 for fastening the connecting jig 8 integrally therewith. Accordingly, the connecting jig 8 is fixed to the main reaction force receiving attachment 6 by the mounting bolt 23 and the second fastening bolt 21.

  In the illustrated example, the right side reaction force receiving attachment 7 includes a base 24 fixed to the surface of the tile Tb with an adhesive, a lower plate 25 mounted on the base 24, and an upper mounted on the lower plate 25. A plate 26, a third fastening bolt 27 that passes through the lower plate 25 from the upper plate 26 and is screwed to the base 24 to integrate the base 24 to the upper plate 26, and between the base 24 and the lower plate 25. A washer 28 is provided.

  A pair of step portions 29 are formed on the lower plate 25 in parallel with each other along the direction of the slide guide 17 with the third fastening bolts 27 interposed therebetween. A pair of receiving groove portions 30 to be fitted into the connecting jig 8 are formed. Two or more auxiliary reaction force receiving attachments 7 may be installed by arranging them on tiles other than the above, as necessary.

  The connecting jig 8 described above has a U-shaped planar outer contour. The connecting jig 8 passes through the slide guide 17 of the force attachment 5 from the main reaction force receiving attachment 6 between the reaction force receiving attachments 6 and 7 arranged on both sides of the test target tile Ta, so It extends over the force receiving attachment 7.

  The connecting jig 8 has a U-shaped folded portion 8a fastened and fixed to the main reaction force receiving attachment 6 by a mounting bolt 23 and a second fastening bolt 21, and a pair of extended portions 8b extending from the folded portion 8a. 5 is inserted into the receiving groove portion 30 of the auxiliary reaction force receiving attachment 7 with the fastening force of the third fastening bolt 27. If necessary, the distal end of the extending portion 8b may be temporarily fixed firmly to the upper plate 26 of the auxiliary reaction force receiving attachment 7 by welding or the like.

  As a result, the reaction force receiving attachments 6 and 7 fixed to the two tiles Tb other than the test target tile Ta are integrated, and both are integrated to receive the reaction force. That is, the main reaction force receiving attachment 6 and the auxiliary reaction force receiving attachment 7 are responsible for the equivalent reaction force.

  The force applying means 9 is provided between the main reaction force receiving attachment 6 and the force attaching 5 among the reaction force receiving attachments 6 and 7 connected by the connecting jig 8. On the upper plate 20 of the main reaction force receiving attachment 6, a rising portion 20a is formed, and the force applying means 9 is fixedly attached to the rising portion 20a with a bolt 31 and held by the main reaction force receiving attachment 6. The

  In the present embodiment, a hydraulic cylinder 9 b with a hydraulic pump 9 a that applies force from the main reaction force receiving attachment 6 toward the force attachment 5 is employed as the force applying means 9. The main body of the hydraulic cylinder 9b is fixed to the main reaction force receiving attachment 6, and a piston portion (not shown) faces at least the lower block 11 of the force attachment 5 and presses it. When a force is applied to the pressure attachment 5, a reaction force is applied to the reaction force receiving attachments 6 and 7, and a force along the surface is input to the test target tile Ta.

  Therefore, in this embodiment, the two reaction force receiving attachments 6 and 7 connected and integrated by the connecting jig 8 are arranged on both sides of the test target tile Ta along the force applying direction of the force applying means 9. .

  The test apparatus 1 is also provided with a force meter that measures and displays the force value of the force applying means 9 and a displacement meter 32 that measures and displays the displacement amount of the force attachment 5 by the force means 9. The force meter is composed of a hydraulic meter (not shown) that measures and displays the hydraulic pressure of the hydraulic pump 9a.

  A pair of displacement gauges 32 are attached to the main reaction force receiving attachment 6 with the force applying means 9 interposed therebetween. The displacement meter 32 has a contact 32b that protrudes from the cylindrical body 32a by a pressing means such as a spring built in the cylindrical body 32a or air introduced into the cylindrical body 32a, and adds the contact 32b. The amount of protrusion by contacting the force attachment 5 is measured and displayed by a position sensor (not shown) provided in the cylindrical body 32a.

  These hydraulic gauges and displacement gauges 32 are connected to arithmetic processing means such as a personal computer as required, and output the measurement values output from these hydraulic gauges and displacement gauges 32 to the arithmetic processing means, for example, force values and It is preferable to display and output a continuous graph or the like showing the relationship between the displacement amounts.

  Next, a test method using the test apparatus 1 according to the present embodiment will be described. First, joint materials such as joint mortar 33 around tiles Ta, Tb, and Tc are cut and removed so as to reach the inside of the foundation concrete 2 before the test is performed.

  Next, the base 10 of the force attachment 5 is fixed to the surface X of the test target tile Ta with an adhesive, and other tiles having an adhesion area exceeding the adhesion area between the ground concrete 2 and the test target tile Ta, specifically, The bases 18 and 24 of the reaction force receiving attachments 6 and 7 are fixed to the two tiles Tb on both sides of the test target tile Ta with an adhesive.

  Next, the lower block 11 and the lower plate 25 are disposed on the bases 10 and 24 of the force attachment 5 and the auxiliary reaction force receiving attachment 7, respectively, while the hydraulic cylinder 9b with the hydraulic pump 9a, the displacement meter 32, and the connecting jig 8 are provided. The sub-assembly of the upper part from the lower plate 19 of the main reaction force receiving attachment 6 attached in advance is arranged on the base 18 of the main reaction force receiving attachment 6, and the extending portion 8b of the connecting jig 8 is formed with the groove portion 16 and the step portion. 29, the second fastening bolt 21 is temporarily tightened.

  Subsequently, the upper plates 13 and 26 of the force attachment 5 and the auxiliary reaction force receiving attachment 7 are placed on the lower block 11 and the lower plate 25 while being covered on the connecting jig 8, and the first fastening bolt 14 and The third fastening bolt 27 is temporarily tightened. Thereafter, all the fastening bolts 14, 21, 27 are finally tightened to complete the setting of the test apparatus 1.

  Next, a reaction force is applied to the pressure attachment 5 by applying a reaction force to the reaction force receiving attachments 6 and 7 by the applying means 9, thereby applying a force along the surface of the test target tile Ta.

  In the present embodiment, since the force attachment 5 is fixed to the surface X of the test target tile Ta and applied, shear force is applied to the layer from the tile Ta to the ground concrete 2 that is the tile adhesion surface 4. It is possible to test the shear failure between the sole of the tile Ta and the pasting mortar 3, the cohesive failure of the pasting mortar 3, and the pasting mortar 3 and the tile bonding surface 4.

  Moreover, since the attachments 5 to 7 of the test apparatus 1 are fixed to the tiles Ta, Tb, and Tc, the test accuracy can be improved unlike the case where the attachments are installed on uneven ground. Therefore, it is also possible to eliminate the work of smoothing the irregular ground.

  Since the reaction force is applied with an adhesion area larger than the adhesion area of the test target tile Ta, only the displacement amount of the test target tile Ta can be accurately measured with high accuracy.

  In short, in the test apparatus and the test method according to the present embodiment, the test apparatus 1 can be appropriately installed, and the test method can be applied with a shearing force reasonably on the bonding portion of the test target tile Ta. Therefore, it is possible to accurately test the improvement in test accuracy and the shear bond strength of the tile itself.

  Further, since the force applying means 9 is held by the main reaction force receiving attachment 6, it is possible to save the labor of the operator having to hold the force applying means 9 during the test, and the test can be performed smoothly. Can be implemented.

  Since the reaction force receiving attachments 6 and 7 are arranged on both sides of the test target tile Ta along the force applying direction of the force applying means 9, the reaction force receiving attachments 6 and 7 are arranged on one side of the test target tile Ta. Compared with the case where they are arranged side by side, it is possible to stabilize the action of applying force and reaction force.

  Since the connecting jig 8 is extended between the reaction force receiving attachments 6 and 7 on both sides of the test target tile Ta, the force attachment 5 is provided with the slide guide 17 slidably engaged with the connecting jig 8. In addition, it is possible to smoothly guide the movement of the force attachment 5 associated with the displacement of the test target tile Ta in the horizontal direction at the time of applying force, and to prevent the test target tile Ta and the force attachment 5 from scattering due to shear failure. Can be secured.

  Since a pair of the displacement gauges 32 are provided across the force applying means 9, the displacement mode of the test target tile Ta can be accurately measured. Further, since the joint material around the tiles Ta, Tb, and Tc is removed, the rigidity with respect to the applied force and reaction force at the time of measurement is the same at the bonding points of the tiles Ta and Tb, and due to the reaction force from the measured displacement amount. The actual amount of displacement excluding the displacement can be easily calculated.

  After performing the test method using the test apparatus 1 according to the present embodiment, the well-known “kenken-type tensile adhesion test” is applied to the tile Tb to which the bases 18 and 24 of the reaction force receiving attachments 6 and 7 are fixed. By applying the "container", the out-of-plane tensile test of the tile can be performed. Thereby, the test mark can be removed, and it can be also used for comparing the shear adhesive strength and the tensile adhesive strength.

  The test apparatus and the test method according to the present invention are not limited to the above embodiment, and the reaction force receiving attachments 6 and 7 are not limited to the tile surface, but may be fixed to an appropriate position with respect to the tile. Further, the auxiliary reaction force receiving attachment 7 may be arranged in line with the main reaction force receiving attachment 6 instead of the arrangement in which the force attachment 5 is sandwiched between the auxiliary reaction force receiving attachment 6 and the main reaction force receiving attachment 6.

  Further, the force applying means 9 is not limited to a hydraulic cylinder, and any mechanism may be used as long as it generates a uniaxial force such as a manual or power jack. Further, the test apparatus and the test method can be applied not only to walls but also to floors, columns, and beam tiles.

1 is a side sectional view showing a preferred embodiment of a tile shear bond strength testing apparatus according to the present invention. It is a top view of the test apparatus shown in FIG. In FIG. 1, it is an AA arrow directional cross-sectional view. 1. It is a BB arrow directional cross-sectional view in FIG. In FIG. 2, it is a CC line arrow directional view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Test apparatus 4 Tile adhesion surface 5 Force attachment 6,7 Reaction force attachment 8 Connection jig 9 Force means 17 Slide guide 32 Displacement meter 33 Joint mortar Ta Test target tile Tb, Tc Other tile X Test target tile surface

Claims (7)

An apparatus for testing the shear bond strength of a tile bonded to a tile bonding surface of a building member,
A force attachment fixed to the surface of the test target tile;
Reaction force receiving attachments fixed to two or more tiles other than the test target tile,
A connecting jig provided between these reaction force receiving attachments, for integrating these reaction force receiving attachments;
The reaction force receiving attachment is provided between any of the reaction force receiving attachments and the force applying attachment, and the reaction force receiving attachment is applied with the reaction force in order to input a force along the surface of the tile to be tested. A tile shear bond strength testing apparatus comprising a force applying means for applying force to a force attachment.   The tile shear bonding according to claim 1, further comprising: a force meter that displays a force value of the force applying means, and a displacement meter that displays a displacement amount of the force attachment by the force means. Strength test equipment.   3. The tile shear bond strength test apparatus according to claim 1, wherein the force applying means is held by the reaction force receiving attachment.   4. The tile shear bonding according to claim 1, wherein the reaction force receiving attachment is disposed on both sides of the test target tile along a direction in which the force applying unit is applied. 5. Strength test equipment.   The connecting jig extends between the reaction force receiving attachments arranged on both sides of the test target tile, and the force attachment is provided with a slide guide that is slidably engaged with the connecting jig. The shear bond strength test apparatus for tiles according to claim 4. A method for testing the shear bond strength of a tile bonded to a tile bonding surface of a building member, comprising:
Attaching the force attachment to the surface of the test target tile, and fixing the reaction force receiving attachment to another tile having an adhesion area exceeding the adhesion area of the test target tile,
Next, by applying force provided between the reaction force receiving attachment and the force attachment, the reaction force receiving attachment is subjected to a reaction force and applied to the force attachment. A method for testing the shear bond strength of a tile, characterized by applying a force along the surface.   The joint adhesive strength test method for tiles according to claim 6, wherein joint material around the tiles is removed in advance before the test.

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