CN103983570A - Device and method for testing shear bond strength of structural adhesive between reinforcement material and concrete - Google Patents

Abstract

A device and method for testing the shear bond strength of structural adhesive between reinforcement materials and concrete, characterized in that it includes an upper hanger arranged on the outer edge of the upper concrete test block and a lower hanger arranged on the outer edge of the lower concrete test block. A V-shaped protrusion is arranged at the middle position of the bottom surface of the rack, and a V-shaped groove is arranged at the middle position of the top surface of the lower hanger to cooperate with the V-shaped protrusion of the upper hanger, and the V-shaped protrusion pivots at a certain angle around the contact line in the groove. The specific steps of the test method are to place the upper hanger on the lower hanger so that the V-shaped protrusion is placed in the V-shaped groove and fixed with a positioning strip; the reinforcement material is pasted to the side of the test block with structural glue, and the reinforcement material is placed on the side of the test block. The sticking areas of the two test blocks are equal. After the structural adhesive is completely cured, remove all the positioning covers and all the positioning strips on one side of the concrete test block, and apply pressure so that the concrete test block has a tendency to pivot around the V-shaped convex contact line. Thus, when the shear bond force is generated and reaches the limit value and is destroyed, the shear bond strength can be calculated.

Description

Device and method for testing shear bond strength of structural adhesive between reinforcement material and concrete

This application is a divisional application of a Chinese invention patent application with an application date of November 28, 2012, an application number of 2012104939575, and a Chinese invention patent application titled a device and method for testing the shear bond strength of structural adhesive between reinforcement materials and concrete.

technical field

The invention is mainly used in the field of construction science and technology, and in the reinforcement and transformation of concrete structures, the device and method for testing the shear bond strength of structural glue bonding reinforcement materials and concrete substrates.

Background technique

In the reinforcement and renovation project of concrete structure engineering, there are technical measures that need to paste reinforcement materials such as steel plates and composite reinforcing fibers on the concrete substrate. Such measures use structural glue to paste the reinforcement material on the concrete matrix, give full play to the characteristics of high tensile strength of the reinforcement material, and achieve the purpose of reinforcement. The key to this technology lies in the coordinated deformation and joint stress of the reinforcement material and the concrete matrix. The coordinated deformation between the two is completely provided by the shear bond force provided by the structural adhesive. Therefore, the shear bond strength is a measure of the bonded material. important indicator of performance. The shear bond strength of the structural adhesive between the reinforcement material and concrete can most directly reflect the performance of the structural adhesive, and there is no corresponding measurement method at present.

In the national standard "Code for Design of Concrete Structure Reinforcement" GB50367-2006, "Code for Construction Quality Acceptance of Building Structure Reinforcement Engineering" GB50550-2010, Standardization Association Standard "Technical Regulations for Carbon Fiber Sheet Reinforced Concrete Structure" CECS146:2003 (2007 edition), Regarding the performance indicators of structural adhesives, there are properties such as positive tensile bond strength and steel-steel shear strength, but none of them can reflect the important index of shear bond strength between the reinforcement material and the base material. In the appendix of the standard, there is "Laboratory Determination Method for Normal Tensile Bond Strength of Structural Adhesive Adhesive Reinforcement Materials and Substrates", which is used to evaluate the positive tensile bond strength of structural adhesives, but the stress state of structural adhesives during the test (perpendicular to the reinforcement The normal stress on the surface of the material) is not the same as the stress state (shear stress parallel to the surface of the reinforced material) when the structure is normally stressed. The normal tensile bond strength and the shear bond strength reflect the two different aspects of the structural adhesive. Adhesive properties.

In the national standard "Determination of Tensile Shear Strength of Adhesives (Rigid Materials to Rigid Materials)" GB/T7124-2008, there is a test method for adhesive tensile shear strength (rigid materials to rigid materials), which is parallel to The tensile force is applied in the direction of the main axis of the sample on the bonding surface, and the shear stress of the single lap joint of the rigid material (that is, the steel sheet to the steel sheet or the fiberboard to the fiberboard) is detected, which reflects the structural adhesive material to a certain extent. own bond strength. However, when the structure is under normal stress in the actual reinforcement project, the most direct bond performance index of the structural adhesive is the shear bond strength between the reinforced material to be bonded and the concrete substrate. Due to the low tensile strength of the concrete material, it cannot According to this standard, the reinforcement material is used to make samples of concrete thin slabs, so the strength index cannot be tested by this standard. The structural adhesive bonding performance index tested in this standard is only the bond shear strength between the reinforcement material and the reinforcement material, so the standard clearly states that "the shear strength value obtained from a single Design Stresses for Structural Bonds".

At present, there is an invention patent "shear strength tester and shear test method" (patent number: ZL201010107968.6), which is used when the concrete structure adopts shallow embedded high-strength slats or surface-attached high-strength slats in engineering structure reinforcement and transformation projects , a special instrument and method for testing the shear strength of the bond between the lath and the original concrete structure. The equipment is divided into three parts: the force measuring rod, the shearing bracket, and the indicator. By tightening the bolt of the force measuring rod, the end of the shearing bracket is opened, and the force transmission shoe is used to hold the bonded slats and align them. Push and press to make the bond with the concrete interface broken, use the tension and pressure sensor installed in the force measuring rod to test the magnitude of the shear force, and the indicator will display the maximum shear force. The invention patent adopts the method of local damage, cuts a certain area of reinforcement material on the reinforced component, and tests the shear bond strength between the reinforcement material and the base material within the area range, which can reflect the construction quality of pasting reinforcement. However, this invention patent can only detect the bonded shear strength of reinforcement materials with a certain thickness. It is necessary for the force-transfer shoe to resist and push the slab to cause shear failure between it and the concrete base material. For slats with a smaller thickness ( 1~2mm) and fiber cloth (0.111~0.167mm) and other reinforcing materials, since it is difficult for the force transmission boots to only touch the reinforcing material without contacting the concrete, it is often impossible to push the slats or fiber cloth to cause shear failure. The use of the method has certain limitations; when using this invention patent, the reinforced material is subjected to pressure, which is inconsistent with the tension in the actual project; when using this invention patent, the reinforced material needs to be cut, not only the reinforced material and the reinforced material The components are damaged to a certain extent, and the high temperature generated during cutting will affect the performance of the bonding material and affect the test results. Therefore, this invention patent cannot fully adapt to the test of the shear bond strength of the structural adhesive between the reinforcement material and the concrete.

Contents of the invention

In order to make up for the deficiency of the detection method of the shear bond strength when the structural adhesive is bonded to the reinforcement material and the concrete base material, to ensure the bonding performance of the structural adhesive and the matching between the reinforcement material and the structural adhesive, and to ensure the quality of the reinforcement project, the present invention provides a A device and method for testing the shear bond strength of a structural adhesive between reinforcement materials and concrete.

The technical measure adopted by the present invention is a test device for the shear bond strength of the structural adhesive between the reinforcement material and the concrete, which is characterized in that it includes an upper hanger arranged on the outer edge of the upper concrete test block and an outer edge of the lower concrete test block. For the lower hanger, a V-shaped protrusion is set in the middle of the bottom surface of the upper hanger, and a V-shaped groove is set in the middle of the top surface of the lower hanger to cooperate with the V-shaped protrusion of the upper hanger, and the V-shaped protrusion is in contact with the groove. The line pivots at an angle.

The specific feature of this scheme is that the upper hanger includes an external corner cover plate located above the concrete test block and a knife-edge support plate located below the concrete test block, and the external corner cover plate and the knife-edge support plate are connected by at least one upper connecting bar Together, a V-shaped protrusion is set on the bottom surface of the knife-edge supporting plate.

The lower hanger includes a sipe cover at the top and a male corner support at the bottom, the sipe cover and the male corner support are connected together by at least one lower connecting bar; V is set on the top surface of the sipe cover The V-shaped groove, the V-shaped protrusion and the V-shaped groove are all arranged in parallel with the male corner cover plate.

There are two upper connecting bars and they are evenly distributed on the sides parallel to the V-shaped groove of the male corner cover plate and the knife-edge supporting plate; there are two lower connecting bars and they are evenly distributed on the sides of the knife groove cover plate and the male corner supporting plate. V-shaped grooves on parallel sides.

On the concrete test block, positioning cover plates are respectively arranged on the opposite sides of the external corner cover plate and the external corner supporting plate.

Four positioning strips are set at the four corners of the upper hanger and the lower hanger, and four positioning holes are set on the positioning strips, and the bolts passing through the positioning holes are respectively screwed into the male corner cover, knife-edge supporting plate, knife groove cover and male corner supporting plate The male angle cover plate, the knife edge supporting plate, the knife groove cover plate, the male angle supporting plate and the positioning cover plate are integrally fixed together in the correspondingly provided threaded holes.

The bolt holes of the connecting strip and the positioning strip are all elongated, and the distance between the supporting plate and the cover plate can be adjusted so as to adapt to the concrete test block with manufacturing errors.

The height of the V-shaped protrusion is 10mm, and the angle is 80°-90°; the depth of the V-shaped groove is 3mm, and the angle is 110°-120°.

The present invention also provides a method for testing the shear bond strength of the structural adhesive between the reinforcement material and the concrete, which is characterized in that an upper hanger and a lower hanger as claimed in claim 1 are set on two concrete test blocks; The hanger is placed on the lower hanger so that the V-shaped protrusion is placed in the V-shaped groove, and the upper hanger and the lower hanger are temporarily fixed with the positioning strip; the reinforcement material is pasted to the side of the test block with structural glue, and the reinforcement material When the sticking areas of the two test blocks are equal, after the structural adhesive is completely cured and cured at room temperature for a week, remove all the positioning covers and all the positioning strips on one side of the concrete test block, and use the pressure generated by the press or other loading equipment to apply On the external corner cover plate and the external corner supporting plate, the concrete test block has a tendency to pivot around the V-shaped convex contact line, and the reinforcement material prevents it from pivoting, thereby generating shear adhesion between the reinforcement material and the concrete substrate. Bond strength; when the shear bond strength of the structural adhesive reaches the limit value and finally fails, the shear bond strength can be calculated from the ultimate pressure and the damaged bond area.

Its specific feature is that the V-shaped protrusion is located below the middle of the bottom surface of the concrete test block, and the shear bonding force is equal to the pressure of the loading equipment.

The beneficial effects of the present invention are: the upper hanger and the lower hanger form a space frame that can fix the concrete standard test block, and form a space lever system. The tendency of the plate V-shaped protruding ends to pivot creates a shear force between the reinforcement material and the surface of the concrete test block. The function of the positioning strip is to temporarily fix the concrete test block, so as to ensure that the concrete test block does not produce relative displacement and the structural adhesive is not disturbed during the process of pasting reinforcement materials on the side of the concrete test block, curing the structural adhesive and testing the device in place on the testing machine. Connecting strips and positioning strips are provided with strip-shaped bolt holes, whose function is to adjust the spacing of the cover plates so as to adapt to the concrete test blocks with manufacturing errors. During the test, the connection bar is not stressed. After the test machine or other loading equipment is used to apply pressure to the external corner cover plate and the external corner support plate, the shear bond force τ(y) will be generated between the reinforcement material and the concrete base material, and its stress state is the same as that in the project Power status is the same. The V-shaped convex contact line of the knife-edge support plate of the test device is located in the middle of the concrete test block, and the resultant force T of the shear bond force τ(y) is equal to the pressure of the test machine. When the shear bond strength of the structural adhesive reaches the limit value and finally fails, the shear bond strength f _τ can be calculated from the limit pressure N and the damaged bond area A. The equipment has the advantages of simple structure, easy operation, safety and reliability, and easy maintenance. When testing the shear bond strength between the structural adhesive reinforcement material and the concrete base material, the strength and aggregate ratio can be used to match the component concrete to be reinforced. Similar concrete test blocks are used to better evaluate the bonding performance of structural adhesives and their compatibility with reinforcement materials when they are applied to actual projects. The test data of the test method is stable, the test method is reliable, and it is suitable for testing the shear bond strength of the structural adhesive between the reinforcement material and the concrete.

The analysis of the force situation is shown in Figure 4 below. The pressure of the loading equipment is transmitted from the male corner cover plate (male corner support plate) to the concrete test block, and then to the knife edge support plate (knife groove cover plate). Force. Under the action of pressure, the test block has a tendency to pivot around the V-shaped convex contact line (at O), the reinforcement material generates a tensile force T to prevent its rotation, and a shear bonding force is generated between the reinforcement material and the concrete substrate. During the test, the resultant force of the shear bonding force (the tension of the reinforcing material) and the pressure of the loading equipment are balanced around the moment of the V-shaped convex contact line. During the test, until the failure, the shear deformation of the structural adhesive is extremely small, so the pivot of the test block is extremely small , the resultant shear bond force and the loading equipment pressure are always parallel. When the test is broken, the ultimate pressure of the loading equipment is N, the resultant shear force of the structural adhesive (strengthening material tension) is T, the V-shaped convex contact line of the knife-edge support plate of the test device is located in the middle of the concrete test block, and the moment arms of T and N Both are 75mm, by the moment balance equation:

75×N=75×T has: T=N

The relationship between the resultant shear force of the structural adhesive (the tensile force of the reinforcement material) T and the shear bonding stress τ(y) of the structural adhesive is:

The shear bonding stress τ(y) of the structural adhesive is completely borne by the structural adhesive, and its stress state is consistent with that in engineering.

When the specimen is damaged, the shear bond strength of the structural adhesive between the reinforcement material and the concrete is:

In the formula: A is the bonding surface area.

Test verification

Using this device and method, the KY-5 structural adhesive developed and produced by Shandong Provincial Academy of Building Sciences was tested. Two concrete test blocks with strength grades of C20 and C40 were selected during the test to represent two different engineering conditions.

The test data of the concrete test blocks with strength grade C20 are as follows:

The test data of the concrete test blocks with strength grade C40 are as follows:

Test Conclusions

1 broken state

The damage state measured by this method is different from "Code for Design of Concrete Structure Reinforcement" GB50367-2006, "Code for Construction Quality Acceptance of Building Structure Reinforcement Engineering" GB50550-2010, Standardization Association Standard "Technical Regulations for Concrete Structure Strengthened by Carbon Fiber Sheet" CECS146: In 2003 (2007 edition) and other standards, the failure mode (generally the tensile failure of the concrete base) is adopted in the normal tensile bond strength test; /T7124-2008 The failure state of the adhesive tensile shear strength (rigid material to rigid material) test (generally, the shear failure of the bonding surface between the structural adhesive and the rigid material or the shear failure between the structural adhesive layers).

The failure state measured by this method is the shear failure of the concrete surface (when the concrete strength is low) or the shear failure of the interface between concrete and structural adhesive (when the concrete strength is high), which is the same as the failure form in the engineering structure, which is in line with The actual situation of the project. (as shown in Figure 5)

2 Stress state of reinforced material during test

This method is different from using the invention patent "Shear Strength Tester and Shear Test Method" (Patent No.: ZL2010 10107968.6) to test the bonding strength of shallow embedded high-strength slats or surface-attached high-strength slats. In the case of pressure during the testing process, the reinforced material is subjected to tensile force during testing by this method, which is the same as the stress state in the actual project, and the measured results can better represent the actual situation of the project.

3 Comparison of detection data

The shear bond strength measured by this method is slightly higher than the positive tensile bond strength (according to the "Code for Design of Concrete Structures" GB50010-2010, the positive tensile strength is 1.54MPa for C20, and 2.39MPa for C40). It is in line with the actual situation that the shear strength of concrete is slightly higher than the normal tensile strength.

4 Test accuracy

The failure state of the same group of specimens tested by this method is similar, and the standard deviation of the test results is small, indicating that the test data is stable and the test method is reliable.

5 close to the actual engineering

The shear strength results are not only related to the properties of the structural adhesive itself, but also related to the strength grade of the concrete. The test results of this method reflect this actual situation, and concrete test blocks of different strength grades can be selected according to the actual engineering concrete strength, so as to make test results closer to the actual engineering and better guide engineering practice.

Description of drawings

Figure 1 is a schematic diagram of the structure of the upper hanger and the lower hanger; Figure 2 is a schematic diagram of the structure of the upper hanger and the lower hanger set outside the concrete test block; Figure 3 is a state diagram of the upper and lower hangers during the test; Figure 4 is a force analysis diagram ; Figure 5 is a schematic diagram of the peeling failure state of the reinforcement material under tension in actual engineering.

In the figure: 1—screw; 2—upper connecting strip; 3—male corner cover; 4—knife edge support plate; 5—knife groove cover; 6—male corner support plate; 7—positioning bar; 9—concrete test block; 10—reinforcing material; 11—pressure direction of loading equipment; 12—lower connecting strip; 13—bolt hole; 14—end stripping;

Detailed ways

As shown in Figure 1-2, a device for testing the shear bond strength of structural adhesive between reinforcement materials and concrete, it includes an upper hanger arranged on the outer edge of the upper concrete test block 9 and a lower hanger on the outer edge of the lower concrete test block 9 For the hanger, a V-shaped protrusion is set in the middle of the bottom surface of the upper hanger, and a V-shaped groove is set in the middle of the top surface of the lower hanger to cooperate with the V-shaped protrusion of the upper hanger. The V-shaped protrusion is pivoted around the contact wire in the groove. turn at an angle. The upper hanger includes an external angle cover plate 3 positioned above the concrete test block 9 and a knife-edge supporting plate 4 positioned below the concrete test block 9, and the external angle cover plate 3 and the knife-edge supporting plate 4 are connected to each other by at least one upper connection bar 2 Together, a V-shaped protrusion is set on the bottom surface of the knife-edge supporting plate 4; the lower hanger includes a knife groove cover plate 5 on the upper part and a male angle supporting plate 6 on the lower part, and the knife groove cover plate 5 and the male angle supporting plate 6 pass through At least one lower connection bar 12 is connected together; V-shaped grooves are set on the top surface of the sipe cover plate 5 , and the V-shaped protrusions and V-shaped grooves are arranged parallel to the male corner cover plate 3 . There are two upper connecting bars 2 and they are evenly distributed on the sides parallel to the V-shaped groove of the male corner cover plate 3 and the knife-edge supporting plate 4; there are two lower connecting bars 12 and they are evenly distributed on the knife groove cover plate 5 and the On the side of the angle supporting plate 6 parallel to the V-shaped groove; on the concrete test block 9, the opposite sides of the male angle cover plate 3 and the male angle supporting plate 6 are respectively provided with positioning cover plates 8 .

Four positioning strips 7 are set at the four corners of the upper hanger and the lower hanger, and four positioning holes are set on the positioning strips 7, and the screws 1 passing through the positioning holes are respectively screwed into the male corner cover 3, the knife edge supporting plate 4, and the knife slot cover 5. In the threaded holes correspondingly set on the male corner support plate 6 and the positioning cover plate 8, the male corner cover plate 3, the knife edge support plate 4, the knife groove cover plate 5, the male corner support plate 6 and the positioning cover plate 8 are integrally fixed together.

The bolt holes on the upper connecting bar 2, the lower connecting bar 12 and the positioning bar 7 are all elongated, and the distance between the male corner supporting plate and the knife-edge supporting plate, as well as the knife groove cover plate and the male corner supporting plate can be adjusted, so as to adapt to existing manufacturing conditions. For the concrete test block with errors, the upper connecting bar 2, the lower connecting bar 12 and the positioning bar 7 are not stressed during the test.

The height of the V-shaped protrusion is 10mm, and the angle is 80°-90°; the depth of the V-shaped groove is 3mm, and the angle is 110°-120°.

As shown in Figures 1-3, the present invention also provides a method for testing the shear bond strength of the structural adhesive between the reinforcement material and the concrete, which is characterized in that two concrete test blocks are provided with the upper hanger as described in claim 1 hanger and lower hanger; put the upper hanger on the lower hanger so that the V-shaped protrusion is placed in the V-shaped groove, and use the positioning bar 7 to temporarily fix the upper hanger and the lower hanger; use structural glue to reinforce The material 10 is pasted on the side of the test block, and the bonding area of the reinforcement material 10 on the two test blocks is equal. After the structural adhesive is completely cured and cured at room temperature for a week, remove all the positioning cover plates 8 and all the positioning strips 7 on one side of the concrete test block , the pressure generated by a press or other loading equipment is applied to the male corner cover plate 3 on the other side, so that the concrete test block 9 has a tendency to pivot around the V-shaped convex contact line, and the reinforcement material prevents it from pivoting, Thereby, a shear bonding force is generated between the reinforcement material 10 and the concrete substrate; when the shear bonding force of the structural adhesive reaches the limit value and finally fails, the shear resistance can be calculated by the ultimate pressure and the damaged bonding area Bond strength. The V-shaped protrusion is located below the middle part of the bottom surface of the concrete test block 9, and the shear bonding force is equal to the pressure of the loading device.

1 Test preparation

1.1 Cover the knife edge support plate and the knife groove cover with plastic film to avoid contamination of the bonding material, and the plastic film will not affect the test accuracy.

1.2 The concrete test block used in the test should be a test block with a side length of 150mm. In order to better evaluate the bonding performance of the structural adhesive when it is applied to the actual project and its adaptability to the reinforcement material, strength and aggregate can be used. Concrete test blocks with a proportion similar to that of the component concrete to be reinforced.

1.3 Place two concrete test blocks in the space formed by the assembly of the components of the present invention, place the pouring top surface and bottom surface of the concrete test block at the position facing the positioning bar, so that it is always in a state of indirect stress during the test process . Align the two concrete test blocks, tighten the bolts, and fix the concrete test blocks.

1.4 Prepare the structural adhesive according to the technical requirements stipulated in the product manual, and paste the reinforcement material on the sides of the two concrete test blocks according to the specified bonding process. The reinforcement material is glued to the same area of the two test blocks, and cured at room temperature for more than 7 days.

2 Test steps

2.1 Place the assembly between the pressure plates of the testing machine or other loading equipment, so that the line of action of the loading pressure passes through the midpoint of the connecting cover. After fully seated, remove the positioning bar and the positioning cover.

2.2 Start the test room and load it at a speed of 0.2-0.5kN/s. At this time, the two concrete test blocks have a tendency to pivot around the raised contact line of the knife-edge supporting plate, and the reinforcement material prevents it from rotating. This creates bond shear forces.

2.3 Continue to load until the reinforcement material and the concrete substrate produce bond shear failure. Since the ultimate shear strain of bond shear failure is small, the concrete test block pivots very little around the V-shaped convex contact line of the knife-edge support plate during the test. , the reinforcement material is always in the state of axial tension, and the structural adhesive is always in the shear state, and the direction of both forces is parallel to the direction of the pressure of the loading equipment. Record the ultimate pressure value N at the time of failure, measure the actual length l and width b of the shear failure surface, then the shear bond strength between the structural adhesive bonding reinforcement material and the base material .

2.4 Make several samples for each group, test their shear bond strength respectively, and then evaluate the shear bond strength of the structural adhesive between the reinforcement material and concrete according to the average value, standard deviation and other parameters.

Claims (8)

1. structure glue shearing resistance cohesive strength proving installation between a reinforcement material and concrete, it is characterized in that it comprises is arranged on the upper hanger of concrete test block outer rim and the lower hanger of lower concrete test block outer rim, centre position, upper hanger bottom surface arranges V-arrangement projection, the V-arrangement projection that lower hanger end face centre position arranges v-depression and upper hanger coordinates, V-arrangement projection in groove around osculatory pivotable certain angle; Described upper hanger comprises the edge of a knife supporting plate that is positioned at the external corner cover plate of concrete test block top and is positioned at concrete test block below, and external corner cover plate and edge of a knife supporting plate link together by connection strap at least one, in edge of a knife supporting plate bottom surface, V-arrangement projection are set; Described lower hanger comprises superposed cutter groove cover plate and the external corner supporting plate that is positioned at bottom, and cutter groove cover plate and external corner supporting plate link together by least one time connection strap; At cutter groove cover plate end face, v-depression is set, V-arrangement projection and external corner cover plate are arranged in parallel; Upper connection strap be two and be evenly distributed on external corner cover plate and the side parallel with v-depression of edge of a knife supporting plate on; Lower connection strap be two and be evenly distributed on cutter groove cover plate and the side parallel with v-depression of external corner supporting plate on; On concrete test block, be positioned at external corner cover plate and external corner supporting plate offside arranges respectively positioning cover plate.

2. structure glue shearing resistance cohesive strength proving installation between reinforcement material according to claim 1 and concrete, it is characterized in that four jiaos of upper hanger and lower hangers arrange four positioning strips, four pilot holes are set on positioning strip, bolt through pilot hole screws in respectively external corner cover plate, edge of a knife supporting plate, on cutter groove cover plate and external corner supporting plate in the corresponding threaded hole arranging by external corner cover plate, edge of a knife supporting plate, cutter groove cover plate, external corner supporting plate and positioning cover plate are integrally fixed together.

3. structure glue shearing resistance cohesive strength proving installation between reinforcement material according to claim 2 and concrete, is characterized in that the bolt hole of connection strap and positioning strip is strip.

4. structure glue shearing resistance cohesive strength proving installation between reinforcement material according to claim 1 and concrete, the height that it is characterized in that V-arrangement projection is 10mm, angle is 80 °～90 °; The recessed degree of depth of v-depression is 3mm, and angle is 110 °～120 °.

5. structure glue shearing resistance bond strength testing method between a reinforcement material and concrete, it is characterized in that: between the reinforcement material arranging on two concrete test blocks and concrete, structure glue shearing resistance cohesive strength proving installation comprises and is arranged on the upper hanger of concrete test block outer rim and the lower hanger of lower concrete test block outer rim, centre position, upper hanger bottom surface arranges V-arrangement projection, the V-arrangement projection that lower hanger end face centre position arranges v-depression and upper hanger coordinates, V-arrangement projection in groove around osculatory pivotable certain angle; Described upper hanger comprises the edge of a knife supporting plate that is positioned at the external corner cover plate of concrete test block top and is positioned at concrete test block below, and external corner cover plate and edge of a knife supporting plate link together by connection strap at least one, in edge of a knife supporting plate bottom surface, V-arrangement projection are set; Described lower hanger comprises superposed cutter groove cover plate and the external corner supporting plate that is positioned at bottom, and cutter groove cover plate and external corner supporting plate link together by least one time connection strap; At cutter groove cover plate end face, v-depression is set, V-arrangement projection and external corner cover plate are arranged in parallel;

Upper hanger is placed on lower hanger V-arrangement projection is placed in v-depression, and use positioning cover plate, positioning strip that upper hanger and lower hanger is temporary fixed; Adopt structure glue that reinforcement material is pasted to test block side, reinforcement material equates at the bonding area of two test blocks, until structure glue, solidify also maintenance at normal temperatures completely after one week, remove whole positioning cover plates and whole positioning strip, the pressure that utilizes pressing machine to produce is applied on external corner cover plate and external corner supporting plate, make concrete test block have the trend around V-arrangement projection osculatory pivotable, reinforcement material stops its pivotable, thereby produces shear bond power between reinforcement material and concrete substrate; When shear bond power value of reaching capacity of structure glue is also finally destroyed, can calculate by the bond area of extreme pressure and destruction shearing resistance cohesive strength.

6. structure glue shearing resistance bond strength testing method between reinforcement material according to claim 5 and concrete, is characterized in that V-arrangement projection is positioned at the below at middle part, concrete test block bottom surface, the pressure equal and opposite in direction of shear bond power and loading facilities.

7. structure glue shearing resistance bond strength testing method between reinforcement material according to claim 5 and concrete, it is characterized in that connection strap be two and be evenly distributed on external corner cover plate and the side parallel with v-depression of edge of a knife supporting plate on; Lower connection strap be two and be evenly distributed on cutter groove cover plate and the side parallel with v-depression of external corner supporting plate on.

8. structure glue shearing resistance bond strength testing method between reinforcement material according to claim 5 and concrete, is characterized in that being positioned at external corner cover plate on concrete test block and external corner supporting plate offside arranges respectively positioning cover plate.