CN110987794A - Detection tool and detection method for tensile bonding strength of bonding mortar - Google Patents
Detection tool and detection method for tensile bonding strength of bonding mortar Download PDFInfo
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- CN110987794A CN110987794A CN201911314719.1A CN201911314719A CN110987794A CN 110987794 A CN110987794 A CN 110987794A CN 201911314719 A CN201911314719 A CN 201911314719A CN 110987794 A CN110987794 A CN 110987794A
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- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 163
- 238000001514 detection method Methods 0.000 title claims abstract description 36
- 238000012360 testing method Methods 0.000 claims abstract description 56
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 21
- 239000000853 adhesive Substances 0.000 claims description 18
- 230000001070 adhesive effect Effects 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 15
- 239000004800 polyvinyl chloride Substances 0.000 claims description 10
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000000741 silica gel Substances 0.000 claims description 7
- 229910002027 silica gel Inorganic materials 0.000 claims description 7
- 239000012774 insulation material Substances 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 229920001169 thermoplastic Polymers 0.000 claims description 5
- 239000004416 thermosoftening plastic Substances 0.000 claims description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 230000007306 turnover Effects 0.000 abstract 1
- 238000010998 test method Methods 0.000 description 10
- 229920006332 epoxy adhesive Polymers 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 230000009965 odorless effect Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/368—Mounting multiple samples in one block, e.g. TMA [Tissue Microarrays]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0298—Manufacturing or preparing specimens
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
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- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a detection machine for the tensile bonding strength of bonding mortar, which comprises: operation platform, longitudinal rail, transverse guide, mortar piece mounting, a plurality of sensor, the sensor chuck, main control unit and slider, mortar piece mounting is fixed on operation platform, longitudinal rail sets up on the stand of operation platform both sides, the slider is installed on longitudinal rail, be provided with transverse guide on the slider, main control unit installs on transverse guide and slides along transverse guide, a plurality of sensor is connected to the middle part below equipartition at main control unit, the below correspondence of every sensor is connected with a sensor chuck, main control unit passes through transverse guide and longitudinal guide's slip regulation sensor position. The detection method comprises the following steps: molding mortar to be detected; pasting a steel clamp; and testing the tensile bonding strength of the bonding mortar test piece. The invention has the advantages of short turnover time, high working efficiency, small environmental pollution, stable test data and high accuracy.
Description
Technical Field
The invention relates to the field of building heat preservation, in particular to a detection machine and a detection method for tensile bonding strength of bonding mortar.
Background
The exterior wall external heat insulation system of the enclosure structure becomes an important way for saving energy of national buildings; the bonded mortar layer is used as a structural layer of the external thermal insulation system of the external wall, and plays a key role in the safety and durability of the whole system; the tensile bonding strength of the bonding mortar is a main parameter for evaluating whether the bonding mortar is qualified or not in the detection field.
The method for testing the tensile bonding strength of the bonding mortar (and a concrete substrate) at present generally adopts a mortar block with the thickness of 70 multiplied by 20mm as a substrate, the substrate is coated with the bonding mortar to be tested, after the bonding mortar to be tested is hardened and cured to an age, an epoxy adhesive is adopted to bond a steel block clamp one day in advance, after the epoxy adhesive is hardened, a universal testing machine is connected through the steel block clamp, and the tensile bonding strength of the bonding mortar is tested.
According to the test method, the bonding mortar is required to be formed one by one, and the time is consumed due to non-streamlined operation; the epoxy adhesive is adopted to adhere the steel blocks, so that the steel blocks need to be adhered one day in advance, and the hardening waiting time is long; the epoxy adhesive has too much smell and is not beneficial to environmental protection and sanitation; when the steel block clamp after detection is recycled, foul smell and thick black smoke can be generated when the clamp is cleaned by burning the epoxy adhesive, and the health of workers and the environment is seriously influenced.
According to the test method, because the substrates are formed one by one, the difference exists between the single substrates; and the verticality of the tensile test of a single test piece has difference, so that the 6 test data of each group have great deviation, and the test accuracy is seriously influenced. The existing testing method for the tensile bonding strength of the bonding mortar has the problems of low working efficiency, large pollution in the testing process, environmental pollution and inaccurate testing data.
Disclosure of Invention
The invention mainly solves the technical problems of providing a detection tool and a detection method for the tensile bonding strength of bonding mortar, and solving the problems of low working efficiency, large pollution in the test process, environmental pollution and inaccurate test data in the current test method for the tensile bonding strength of the bonding mortar of the thermal insulation material.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a bonding mortar tensile bonding strength detects machines includes: operation platform, longitudinal rail, transverse guide, mortar piece mounting, a plurality of sensor, the sensor chuck, main control unit and slider, mortar piece mounting is fixed on operation platform, longitudinal rail sets up on the stand of operation platform both sides, the slider is installed on longitudinal rail, be provided with transverse guide on the slider, main control unit installs on transverse guide and slides along transverse guide, a plurality of sensor is connected to the middle part below equipartition at main control unit, the below correspondence of every sensor is connected with a sensor chuck, main control unit passes through transverse guide and longitudinal guide's slip regulation sensor position.
In a preferred embodiment of the present invention, the transverse guide rail is a ball linear guide rail, the precision grade of the main shaft is C4, and the length of the guide rail is 300-500 mm; the longitudinal guide rail is a ball linear guide rail, the precision grade of a main shaft of the ball linear guide rail is C4, and the length of the guide rail is 300-500 mm.
In a preferred embodiment of the present invention, the operation platform is made of high-carbon low-alloy cold-work steel, and the operation platform is provided with a hole.
In a preferred embodiment of the invention, one end of the sensor chuck is connected with a sensor, and the other end of the sensor chuck is connected with a steel clamp through a first screw rod; the middle lower part of the main controller is uniformly connected with 6 force value sensors with 5KN, and the sensor precision is 0.001N.
In a preferred embodiment of the present invention, the mortar block fixing member is in a horizontal U shape, the lower end of the mortar block fixing member is fixed in the hole of the operation platform through a sleeve bolt, the upper end of the mortar block fixing member is provided with a second screw rod, the second screw rod is provided with a conical screw head, and the conical screw head is rotated to enable the second screw rod to rotate up and down to adjust the spatial position for fixing the mortar board.
In a preferred embodiment of the present invention, the host controller is directly connected to the host computer, and the data is directly transmitted to the computer through the data line, and the host controller can be controlled to operate through the application software on the computer.
In order to solve the technical problem, the invention adopts another technical scheme that: the method for detecting the tensile bonding strength of the thermal insulation material bonding mortar comprises the following steps:
(1) molding of mortar to be detected: a large mortar bottom plate is used as a base material, and a disposable porous mold is adopted to form a plurality of pieces of mortar to be bonded in one step;
(2) pasting a steel clamp: after waiting for the bonding mortar to be detected to be hardened and cured to the age, heating the thermoplastic polyvinyl chloride adhesive to adhere to the steel block clamp;
(3) and (3) testing the tensile bonding strength of the bonded mortar test piece: after cooling to room temperature and hardening, testing the tensile bonding strength of the bonding mortar to be tested by using a bonding mortar tensile bonding strength detection machine, directly placing the bonding mortar to be tested on an operation platform, and firmly fixing the mortar bottom plate by using a mortar block fixing piece; the main controller adjusts the position of the sensor through the sliding of the transverse guide rail and the longitudinal guide rail, so that the sensor is positioned right above the mortar to be detected; the position of the sensor is adjusted to a proper height, the first screw rod is continuously screwed into the internal thread of the steel block clamp, the steel block clamp is connected with the sensor chuck, the sensor and the bonding mortar to be detected are installed, the tensile bonding strength detection machine parameters of the bonding mortar are set, the tensile bonding strength detection machine of the bonding mortar is started, and the test work of a plurality of mortar to be detected can be completed at one time.
In a preferred embodiment of the invention, in step (1), a massive mortar base plate of 500 × 400 × 20mm is used as a base material, the disposable porous mold is a silica gel mold with the size of 400mm × 500mm, and 12 square holes of 50mm × 50mm are uniformly cut in the middle.
In a preferred embodiment of the invention, the polyvinyl chloride adhesive is heated by using an electric hair drier in the step (2), wherein the heating temperature is 45-55 ℃, and the heating time is 8-12 min.
In a preferred embodiment of the present invention, the cooling time for the cooling hardening in step (3) is 15-25 min.
The invention has the beneficial effects that:
1. the invention adopts a large mortar bottom plate with the thickness of 500 multiplied by 400 multiplied by 20mm as a base material, and a plurality of pieces of mortar to be bonded are formed at one time; the porous silica gel mold is incompatible with the bonding mortar, so that the mold is easy to remove and clean; the test process is streamlined operation, and the test piece is easy to remove the mould, easily washs, is showing to accelerate the shaping process, has improved work efficiency.
2. The clamp for sticking the mortar to be adhered and the steel block has the advantages that the adhesive is softened by heating at 50 ℃ through the electric hair drier, the sticking speed of the clamp for sticking the mortar to be adhered and the steel block is high, the sticking process is nontoxic and odorless, and the clamp is safe and environment-friendly.
3. The invention adopts the bonding mortar tensile bonding strength detection machine tool to detect the tensile bonding strength of a plurality of bonding mortars at one time, thereby obviously improving the working efficiency and testing data, and the testing verticality is consistent and the data uniformity is good.
4. The steel block clamp is cleaned only by heating the adhesive at 50 ℃ by using the electric hair drier to soften the adhesive and removing the adhesive; the cleaning process has no toxic smoke and odor, and the environmental protection performance is good.
5. The test piece is formed and stretched at one time, the uniformity of test data is good, and the test result is accurate and reliable.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a front view of a preferred embodiment of the bonding mortar tensile bond strength testing machine of the present invention;
FIG. 2 is a top view of a preferred embodiment of the bonding mortar tensile bond strength testing machine of the present invention;
FIG. 3 is a diagram showing the formation of the bonding mortar of the present invention;
the parts in the drawings are numbered as follows: 1. the device comprises an operation platform, 2, a longitudinal guide rail, 3, a transverse guide rail, 4, a mortar block fixing piece, 5, a sensor chuck, 6 and a main controller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, embodiment 1 includes:
a tensile bonding strength detection machine tool for bonding mortar comprises: operation platform 1, longitudinal rail 2, transverse guide 3, mortar piece mounting 4, a plurality of sensor, sensor chuck 5, main control unit 6 and slider, mortar piece mounting 4 is fixed on operation platform 1, longitudinal rail 2 sets up on the stand of operation platform 1 both sides, the slider is installed on longitudinal rail 2, be provided with transverse guide 3 on the slider, main control unit 6 is installed on transverse guide 3 and is slided along transverse guide 3, a plurality of sensor is connected to middle part below equipartition at main control unit 6, the below correspondence of every sensor is connected with a sensor chuck 5, main control unit 6 is through transverse guide 3 and longitudinal rail 2's slip regulation sensor position.
The operation platform 1 is made of high-carbon low-alloy cold-work steel, and holes are formed in the operation platform 1; one end of the sensor chuck 5 is connected with a sensor, and the other end of the sensor chuck is connected with a steel clamp through a first screw rod; the mortar block fixing piece 4 is in a horizontal U shape, the lower end of the mortar block fixing piece is fixed in a hole of the operating platform 1 through a sleeve bolt, the upper end of the mortar block fixing piece is provided with a second screw rod, a conical screw head is arranged on the second screw rod, and the conical screw head is rotated to enable the second screw rod to rotate up and down to adjust the space position so as to fix a mortar plate; the main controller 6 is directly connected to a computer host, data is directly transmitted to a computer through a data line, and the operation of the main controller 6 can be controlled through application software on the computer.
Preferably, the transverse guide rail 3 is a ball linear guide rail, the precision grade of a main shaft of the ball linear guide rail is C4, and the length of the guide rail is 300 mm; the longitudinal guide rail 2 is a ball linear guide rail, the precision grade of a main shaft of the longitudinal guide rail is C4, and the length of the guide rail is 300 mm; the middle lower part of the main controller is uniformly connected with 6 force value sensors with 5KN, and the sensor precision is 0.001N.
A method for detecting the tensile bonding strength of thermal insulation material bonding mortar comprises the following steps:
(1) molding of mortar to be detected: adopting a large mortar bottom plate with the size of 500 multiplied by 400 multiplied by 20mm as a base material, adopting a disposable porous silica gel mould with the size of 400 multiplied by 500mm, uniformly cutting 12 square holes with the size of 50 multiplied by 50mm in the middle, and forming 12 mortar to be adhered in one step;
(2) pasting a steel clamp: after waiting for the bonding mortar to be detected to be hardened and cured to an age, heating the thermoplastic polyvinyl chloride adhesive to adhere to the steel block clamp, and heating the polyvinyl chloride adhesive by using an electric hair drier at the heating temperature of 50 ℃ for 10 min;
(3) and (3) testing the tensile bonding strength of the bonded mortar test piece: after cooling to room temperature and hardening, the cooling time of cooling and hardening is 20min, the tensile bonding strength of the bonding mortar to be tested is tested by adopting a bonding mortar tensile bonding strength detection machine, the bonding mortar to be tested is directly placed on the operation platform 1, and the mortar bottom plate is firmly fixed by adopting a mortar block fixing piece 4; the main controller 6 adjusts the position of the sensor through the sliding of the transverse guide rail 3 and the longitudinal guide rail 2, so that the sensor is positioned right above the mortar to be detected; the position of the sensor is adjusted to a proper height, the first screw rod is continuously screwed into the internal thread of the steel block clamp, the steel block clamp is connected with the sensor chuck 5, the sensor and the bonding mortar to be detected are installed, the tensile bonding strength detection machine parameters of the bonding mortar are set, the tensile bonding strength detection machine of the bonding mortar is started, and the test work of a plurality of mortar to be detected can be completed at one time.
The data stability of the test of example 1 is shown in table 1, and the data stability of the test of comparative example 1 using the previous test method is shown in table 2.
TABLE 1
TABLE 2
Compared with the two methods, the data tested by the prior test method has obvious discrete type, and the standard deviation is as high as 0.073993; the data tested using example 1 was uniform with a standard deviation of only 0.014866; and the uniformity of the data leads to a better standard of the test data.
Referring to fig. 1 to 3, embodiment 2 includes:
a tensile bonding strength detection machine tool for bonding mortar comprises: operation platform 1, longitudinal rail 2, transverse guide 3, mortar piece mounting 4, a plurality of sensor, sensor chuck 5, main control unit 6 and slider, mortar piece mounting 4 is fixed on operation platform 1, longitudinal rail 2 sets up on the stand of operation platform 1 both sides, the slider is installed on longitudinal rail 2, be provided with transverse guide 3 on the slider, main control unit 6 is installed on transverse guide 3 and is slided along transverse guide 3, a plurality of sensor is connected to middle part below equipartition at main control unit 6, the below correspondence of every sensor is connected with a sensor chuck 5, main control unit 6 is through transverse guide 3 and longitudinal rail 2's slip regulation sensor position.
The operation platform 1 is made of high-carbon low-alloy cold-work steel, and holes are formed in the operation platform 1; one end of the sensor chuck 5 is connected with a sensor, and the other end of the sensor chuck is connected with a steel clamp through a first screw rod; the mortar block fixing piece 4 is in a horizontal U shape, the lower end of the mortar block fixing piece is fixed in a hole of the operating platform 1 through a sleeve bolt, the upper end of the mortar block fixing piece is provided with a second screw rod, a conical screw head is arranged on the second screw rod, and the conical screw head is rotated to enable the second screw rod to rotate up and down to adjust the space position so as to fix a mortar plate; the main controller 6 is directly connected to a computer host, data is directly transmitted to a computer through a data line, and the operation of the main controller 6 can be controlled through application software on the computer.
Preferably, the transverse guide rail 3 is a ball linear guide rail, the precision grade of a main shaft of the ball linear guide rail is C4, and the length of the guide rail is 400 mm; the longitudinal guide rail 2 is a ball linear guide rail, the precision grade of a main shaft of the longitudinal guide rail is C4, and the length of the guide rail is 400 mm; the middle lower part of the main controller is uniformly connected with 6 force value sensors with 5KN, and the sensor precision is 0.001N.
A method for detecting the tensile bonding strength of thermal insulation material bonding mortar comprises the following steps:
(1) molding of mortar to be detected: adopting a large mortar bottom plate with the size of 500 multiplied by 400 multiplied by 20mm as a base material, adopting a disposable porous silica gel mould with the size of 400 multiplied by 500mm, uniformly cutting 12 square holes with the size of 50 multiplied by 50mm in the middle, and forming 12 mortar to be adhered in one step;
(2) pasting a steel clamp: after waiting for the bonding mortar to be detected to be hardened and cured to an age, heating the thermoplastic polyvinyl chloride adhesive to adhere to the steel block clamp, and heating the polyvinyl chloride adhesive by using an electric hair drier at the heating temperature of 45 ℃ for 12 min;
(3) and (3) testing the tensile bonding strength of the bonded mortar test piece: after cooling to room temperature and hardening, the cooling time of cooling and hardening is 15min, the tensile bonding strength of the bonding mortar to be tested is tested by adopting a bonding mortar tensile bonding strength detection machine, the bonding mortar to be tested is directly placed on the operation platform 1, and the mortar bottom plate is firmly fixed by adopting a mortar block fixing piece 4; the main controller 6 adjusts the position of the sensor through the sliding of the transverse guide rail 3 and the longitudinal guide rail 2, so that the sensor is positioned right above the mortar to be detected; the position of the sensor is adjusted to a proper height, the first screw rod is continuously screwed into the internal thread of the steel block clamp, the steel block clamp is connected with the sensor chuck 5, the sensor and the bonding mortar to be detected are installed, the tensile bonding strength detection machine parameters of the bonding mortar are set, the tensile bonding strength detection machine of the bonding mortar is started, and the test work of a plurality of mortar to be detected can be completed at one time.
The data stability of the test of example 2 is shown in table 3, and the data stability of the test of comparative example 2 using the previous test method is shown in table 4.
TABLE 3
TABLE 4
Compared with the two methods, the data tested by the prior test method has obvious discrete type, and the standard deviation is as high as 0.02370654; the data tested using example 2 was uniform with a standard deviation of only 0.00925503; and the uniformity of the data leads to a better standard of the test data.
Referring to fig. 1 to 3, embodiment 3 includes:
a tensile bonding strength detection machine tool for bonding mortar comprises: operation platform 1, longitudinal rail 2, transverse guide 3, mortar piece mounting 4, a plurality of sensor, sensor chuck 5, main control unit 6 and slider, mortar piece mounting 4 is fixed on operation platform 1, longitudinal rail 2 sets up on the stand of operation platform 1 both sides, the slider is installed on longitudinal rail 2, be provided with transverse guide 3 on the slider, main control unit 6 is installed on transverse guide 3 and is slided along transverse guide 3, a plurality of sensor is connected to middle part below equipartition at main control unit 6, the below correspondence of every sensor is connected with a sensor chuck 5, main control unit 6 is through transverse guide 3 and longitudinal rail 2's slip regulation sensor position.
The operation platform 1 is made of high-carbon low-alloy cold-work steel, and holes are formed in the operation platform 1; one end of the sensor chuck 5 is connected with a sensor, and the other end of the sensor chuck is connected with a steel clamp through a first screw rod; the mortar block fixing piece 4 is in a horizontal U shape, the lower end of the mortar block fixing piece is fixed in a hole of the operating platform 1 through a sleeve bolt, the upper end of the mortar block fixing piece is provided with a second screw rod, a conical screw head is arranged on the second screw rod, and the conical screw head is rotated to enable the second screw rod to rotate up and down to adjust the space position so as to fix a mortar plate; the main controller 6 is directly connected to a computer host, data is directly transmitted to a computer through a data line, and the operation of the main controller 6 can be controlled through application software on the computer.
Preferably, the transverse guide rail 3 is a ball linear guide rail, the precision grade of a main shaft of the ball linear guide rail is C4, and the length of the guide rail is 500 mm; the longitudinal guide rail 2 is a ball linear guide rail, the precision grade of a main shaft of the longitudinal guide rail is C4, and the length of the guide rail is 500 mm; the middle lower part of the main controller is uniformly connected with 6 force value sensors with 5KN, and the sensor precision is 0.001N.
A method for detecting the tensile bonding strength of thermal insulation material bonding mortar comprises the following steps:
(1) molding of mortar to be detected: adopting a large mortar bottom plate with the size of 500 multiplied by 400 multiplied by 20mm as a base material, adopting a disposable porous silica gel mould with the size of 400 multiplied by 500mm, uniformly cutting 12 square holes with the size of 50 multiplied by 50mm in the middle, and forming 12 mortar to be adhered in one step;
(2) pasting a steel clamp: after waiting for the bonding mortar to be detected to be hardened and cured to an age, heating the thermoplastic polyvinyl chloride adhesive to adhere to the steel block clamp, and heating the polyvinyl chloride adhesive by using an electric hair drier at 55 ℃ for 8 min;
(3) and (3) testing the tensile bonding strength of the bonded mortar test piece: after cooling to room temperature and hardening, the cooling time of cooling and hardening is 25min, the tensile bonding strength of the bonding mortar to be tested is tested by adopting a bonding mortar tensile bonding strength detection machine, the bonding mortar to be tested is directly placed on the operation platform 1, and the mortar bottom plate is firmly fixed by adopting a mortar block fixing piece 4; the main controller 6 adjusts the position of the sensor through the sliding of the transverse guide rail 3 and the longitudinal guide rail 2, so that the sensor is positioned right above the mortar to be detected; the position of the sensor is adjusted to a proper height, the first screw rod is continuously screwed into the internal thread of the steel block clamp, the steel block clamp is connected with the sensor chuck 5, the sensor and the bonding mortar to be detected are installed, the tensile bonding strength detection machine parameters of the bonding mortar are set, the tensile bonding strength detection machine of the bonding mortar is started, and the test work of a plurality of mortar to be detected can be completed at one time.
The stability of the data tested in example 3 is shown in table 5 and the stability of the data tested in comparative example 3 using the previous test method is shown in table 6.
TABLE 5
TABLE 6
Compared with the two methods, the data tested by the prior test method has obvious discrete type, and the standard deviation is as high as 0.119734; the data tested using example 3 was uniform with a standard deviation of only 0.038547; and the uniformity of the data leads to a better standard of the test data.
Through the data analysis, the test data obtained by the test method is uniform and reliable, and the test data accuracy is high.
The invention adopts a large mortar bottom plate with the thickness of 500 multiplied by 400 multiplied by 20mm as a base material, and a plurality of pieces of mortar to be bonded are formed at one time; the porous silica gel mold is incompatible with the bonding mortar, so that the mold is easy to remove and clean; the test process is streamlined operation, and the test piece is easy to remove the mould, easily washs, is showing to accelerate the shaping process, has improved work efficiency. The clamp for sticking the mortar to be adhered and the steel block has the advantages that the adhesive is softened by heating at 50 ℃ through the electric hair drier, the sticking speed of the clamp for sticking the mortar to be adhered and the steel block is high, the sticking process is nontoxic and odorless, and the clamp is safe and environment-friendly. The invention adopts the bonding mortar tensile bonding strength detection machine tool to detect the tensile bonding strength of a plurality of bonding mortars at one time, thereby obviously improving the working efficiency and testing data, and the testing verticality is consistent and the data uniformity is good. The steel block clamp is cleaned only by heating the adhesive at 50 ℃ by using the electric hair drier to soften the adhesive and removing the adhesive; the cleaning process has no toxic smoke and odor, and the environmental protection performance is good. The test piece is formed and stretched at one time, the uniformity of test data is good, and the test result is accurate and reliable.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a bonding mortar tensile bonding strength detects machines which characterized in that includes: operation platform, longitudinal rail, transverse guide, mortar piece mounting, a plurality of sensor, the sensor chuck, main control unit and slider, mortar piece mounting is fixed on operation platform, longitudinal rail sets up on the stand of operation platform both sides, the slider is installed on longitudinal rail, be provided with transverse guide on the slider, main control unit installs on transverse guide and slides along transverse guide, a plurality of sensor is connected to the middle part below equipartition at main control unit, the below correspondence of every sensor is connected with a sensor chuck, main control unit passes through transverse guide and longitudinal guide's slip regulation sensor position.
2. The bonding mortar tensile bonding strength detection tool according to claim 1, wherein the transverse guide rail is a ball linear guide rail, the precision grade of the main shaft is C4, and the length of the guide rail is 300-500 mm; the longitudinal guide rail is a ball linear guide rail, the precision grade of a main shaft of the ball linear guide rail is C4, and the length of the guide rail is 300-500 mm.
3. The bonding mortar tensile bonding strength detection machine according to claim 1, wherein the operation platform is made of high-carbon low-alloy cold-work steel, and holes are formed in the operation platform.
4. The bonding mortar tensile bonding strength detection tool according to claim 1, wherein one end of the sensor chuck is connected with the sensor, and the other end of the sensor chuck is connected with the steel clamp through the first screw rod; the middle lower part of the main controller is uniformly connected with 6 force value sensors with 5KN, and the sensor precision is 0.001N.
5. The bonding mortar tensile bonding strength detecting machine according to claim 3, wherein the mortar block fixing member is of a horizontal U shape, the lower end of the mortar block fixing member is fixed in the hole of the operation platform through a sleeve bolt, the upper end of the mortar block fixing member is provided with a second screw rod, the second screw rod is provided with a conical screw head, and the conical screw head is rotated to enable the second screw rod to rotate up and down to adjust the spatial position so as to fix the mortar board.
6. The bonding mortar tensile bonding strength detection machine as claimed in claim 1, wherein the main controller is directly connected to a computer host, data is directly transmitted to the computer through a data line, and the operation of the main controller can be controlled by application software on the computer.
7. A method for detecting the tensile bonding strength of thermal insulation material bonding mortar is characterized by comprising the following steps:
(1) molding of mortar to be detected: a large mortar bottom plate is used as a base material, and a disposable porous mold is adopted to form a plurality of pieces of mortar to be bonded in one step;
(2) pasting a steel clamp: after waiting for the bonding mortar to be detected to be hardened and cured to the age, heating the thermoplastic polyvinyl chloride adhesive to adhere to the steel block clamp;
(3) and (3) testing the tensile bonding strength of the bonded mortar test piece: after cooling to room temperature and hardening, testing the tensile bonding strength of the bonding mortar to be tested by using a bonding mortar tensile bonding strength detection machine, directly placing the bonding mortar to be tested on an operation platform, and firmly fixing the mortar bottom plate by using a mortar block fixing piece; the main controller adjusts the position of the sensor through the sliding of the transverse guide rail and the longitudinal guide rail, so that the sensor is positioned right above the mortar to be detected; the position of the sensor is adjusted to a proper height, the first screw rod is continuously screwed into the internal thread of the steel block clamp, the steel block clamp is connected with the sensor chuck, the sensor and the bonding mortar to be detected are installed, the tensile bonding strength detection machine parameters of the bonding mortar are set, the tensile bonding strength detection machine of the bonding mortar is started, and the test work of a plurality of mortar to be detected can be completed at one time.
8. The method for testing the tensile bonding strength of bonding mortar according to claim 7, wherein in the step (1), a massive mortar base plate of 500X 400X 20mm is used as a base material, the disposable porous mold is a silica gel mold with the size of 400X 500mm, and 12 square holes of 50X 50mm are uniformly cut in the middle.
9. The method for detecting the tensile bonding strength of the bonding mortar according to claim 7, wherein the polyvinyl chloride adhesive is heated by an electric hair drier in the step (2), the heating temperature is 45-55 ℃, and the heating time is 8-12 min.
10. The method for detecting the tensile bonding strength of the bonding mortar according to claim 7, wherein the cooling time for the cooling hardening in the step (3) is 15-25 min.
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