CN107192592B - Forming frame for mortar tensile bonding strength test and forming method thereof - Google Patents
Forming frame for mortar tensile bonding strength test and forming method thereof Download PDFInfo
- Publication number
- CN107192592B CN107192592B CN201710563123.XA CN201710563123A CN107192592B CN 107192592 B CN107192592 B CN 107192592B CN 201710563123 A CN201710563123 A CN 201710563123A CN 107192592 B CN107192592 B CN 107192592B
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- Prior art keywords
- mortar
- test
- molding
- counter bore
- frame
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- 238000012360 testing method Methods 0.000 title claims abstract description 70
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 42
- 238000000465 moulding Methods 0.000 claims abstract description 37
- 239000011083 cement mortar Substances 0.000 claims abstract description 22
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000013013 elastic material Substances 0.000 claims description 5
- 238000002474 experimental method Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 206010015866 Extravasation Diseases 0.000 abstract description 3
- 230000036251 extravasation Effects 0.000 abstract description 3
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
Classifications
-
- 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
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a forming frame for testing tensile bonding strength of mortar, which comprises the following components: the test device comprises a cuboid body, wherein a square substrate fixing counter bore for fixing a cement mortar substrate test block is arranged in the middle of the cuboid body in a centered manner, and a square test mortar forming hole is formed in the bottom of the square substrate fixing counter bore in a centered manner in a penetrating manner. The invention also provides a molding method of the molding frame for testing the tensile bonding strength of the mortar. The molding frame is prepared by one-step molding of rubber, and has the characteristics of simple structure and easy operation. The structure can effectively reduce the problems of mortar extravasation, uneven test block, deflection and unfilled corner possibly encountered in the die filling and demolding processes of the mortar tensile bonding strength test, and improve the success rate of the test.
Description
Technical Field
The invention belongs to the technical field of performance test of building mortar, and particularly relates to a forming frame for a tensile bonding strength test of mortar and a forming method thereof.
Background
The tensile bond strength test is widely used as one of the test for measuring the basic properties of mortar. The existing mould for forming the test mortar block is mostly a forming frame which is made of metal or plastic plates, has the outer dimension of 70mm multiplied by 6mm and the inner hollowed-out dimension of 40mm multiplied by 6mm. In the process of checking mortar die filling, the forming frame and the mortar substrate cannot be fixed, so that the die is inclined in the forming process, and the prepared test block is inclined, which is not beneficial to later experiments.
Because the forming frame is made of metal or rigid polyvinyl chloride, a good connection relation cannot be established between the structure and the substrate, and the inspection mortar is easy to seep out from a gap between the forming frame and the substrate in the die filling process. After removal of the form, the coagulated exuded mortar can prevent the test piece from being inserted into the fixture. Meanwhile, if the test block is prepared by using the existing molding frame, exudation mortar is shoveled after molding, the upper part of the test block can be seen to be compact, the lower part of the test block is loose, and the non-uniformity can cause deviation of experimental results.
Disclosure of Invention
Aiming at the problems of the existing forming frame, the invention improves the forming frame to obtain the forming frame for the mortar tensile bonding strength experiment and the forming method thereof.
The invention relates to a forming frame for a mortar tensile bonding strength experiment, which is realized by the following technical scheme:
a forming frame for a mortar tensile bond strength test, comprising:
the test device comprises a cuboid body, wherein a square substrate fixing counter bore for fixing a cement mortar substrate test block is arranged in the middle of the cuboid body in a centered manner, and a square test mortar forming hole is formed in the bottom of the square substrate fixing counter bore in a centered manner in a penetrating manner.
Further, the depth of the test mortar molding hole is 6mm.
Further, the wall thickness of the square substrate fixing counter bore is 6mm.
Further, the depth of the square substrate fixing counter bore is 9mm.
Further, the body is integrally made of an elastic material.
Further, the elastic material is rubber or plastic.
The molding method of the other aspect of the invention is realized by adopting the following scheme:
a molding method of the molding frame, comprising the steps of:
1) Polishing the molding surface of a group of cement mortar base test blocks to be smooth, and then placing the molding surface upwards for use;
2) Uniformly coating a release agent on the inner side of a forming frame, covering a cement mortar substrate test block by using an upward checking mortar forming hole and a downward substrate fixing counter bore of the forming frame, and forcibly extruding the two until the bottom of the substrate fixing counter bore is tightly attached to the upper surface of the cement mortar substrate test block;
3) Forming Kong Zhuangmo the prepared test mortar from the test mortar according to the standard steps of the building mortar experimental specification;
4) When demoulding, one hand holds the cement mortar substrate test block, and the other hand lifts the forming frame vertically upwards to finish demoulding.
Further, in the step 1), 10 cement mortar base test blocks are grouped.
The novel forming frame provided by the invention is formed by one-step forming of the elastic material, and has the characteristics of simple structure and simplicity in operation. The structure and the forming method thereof can effectively reduce the problems of mortar extravasation, uneven test block, deflection and unfilled corner possibly encountered in the die filling and stripping processes of the mortar tensile bonding strength test, and improve the success rate of the test.
Drawings
Fig. 1 is a schematic three-dimensional structure of a molding frame according to an embodiment of the present invention.
Fig. 2 is a top view of the forming frame according to an embodiment of the present invention.
FIG. 3 is a side view of the form of an embodiment of the present invention placed on a cement mortar base block.
In the figure: 1-a body; 2-checking a mortar forming hole; 3-a substrate fixing counter bore; 4-cement mortar base test block.
Detailed Description
The present invention will be described in further detail with reference to the drawings and specific examples, which are not to be construed as limiting the embodiments of the present invention.
As shown in fig. 1 to 3, a molding frame for a mortar tensile bond strength test, comprising:
the test strip comprises a cuboid body 1 which is integrally made of rubber, wherein a square substrate fixing counter bore 3 for fixing a cement mortar substrate test block 4 is arranged in the middle of the cuboid body 1 to form a substrate fixing area; the square base fixing counter bore 3 is provided with a square checking mortar forming hole 2 in a penetrating mode at the center of the bottom, and the checking mortar forming area.
The outer dimensions of the novel forming frame provided by the embodiment are 82mm multiplied by 15mm, wherein the dimensions of the test mortar forming holes 2 are 40mm multiplied by 6mm, namely the length and the width of the test mortar forming holes 2 are 40mm, and the depth is 6mm; the dimensions of the square substrate fixing counter bore 3 are 70mm multiplied by 9mm, namely the length and the width of the square substrate fixing counter bore 3 are 70mm, the depth is 9mm, at this time, the wall thickness between the square substrate fixing counter bore 3 and the outer surface of the body 1 is 6mm, and the proper wall thickness is convenient to operate, and can ensure enough strength and durability.
A molding method of the molding frame, comprising the steps of:
1) Polishing the molding surface of the cement mortar base test block 4 of 10 groups to be smooth, and then placing the molding surface upwards for use;
2) Uniformly coating a release agent on the inner side of a forming frame, and sleeving a cement mortar substrate test block 4 by using an upward checking mortar forming hole 2 and a downward substrate fixing counter bore 3 of the forming frame and forcibly extruding the two until the bottom of the substrate fixing counter bore 3 is tightly attached to the upper surface of the cement mortar substrate test block 4 (see figure 3);
3) Filling the prepared test mortar into a mold from a test mortar molding hole 2 according to the standard steps of the building mortar experimental specification and molding;
4) When demoulding, one hand holds the cement mortar base test block 4, and the other hand lifts the forming frame vertically upwards to finish demoulding.
The method is easy to operate, can effectively reduce the problems of mortar extravasation, uneven test block, deflection and unfilled corner possibly encountered in the die filling and stripping processes of the mortar tensile bonding strength test, and improves the success rate of the test.
The above examples of the present invention are merely illustrative of the present invention and are not intended to limit the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (5)
1. The molding method of the molding frame for the mortar tensile bonding strength test is characterized in that the molding frame comprises a cuboid body (1), a square substrate fixing counter bore (3) for fixing a cement mortar substrate test block (4) is arranged in the middle of the cuboid body (1), a square test mortar molding hole (2) is formed in the bottom of the square substrate fixing counter bore (3) in a penetrating manner in the middle, and the cuboid body (1) is integrally made of an elastic material, wherein the elastic material is rubber or plastic; when the die is assembled, the test mortar forming hole (2) is upward, the square substrate fixing counter bore (3) is downward, the cement mortar substrate test block (4) is sleeved, and the test mortar forming hole and the square substrate fixing counter bore are pressed by force until the bottom of the square substrate fixing counter bore (3) is tightly attached to the upper surface of the cement mortar substrate test block (4);
the molding method comprises the following steps:
1) Polishing the molding surface of a group of cement mortar base test blocks (4) to be smooth, and then placing the molding surface upwards for use;
2) Uniformly coating a release agent on the inner side of a forming frame, enabling a test mortar forming hole (2) of the forming frame to face upwards and a square substrate fixing counter bore (3) to face downwards, sleeving a cement mortar substrate test block (4), and forcibly extruding the test block and the square substrate fixing counter bore until the bottom of the square substrate fixing counter bore (3) is tightly attached to the upper surface of the cement mortar substrate test block (4);
3) Filling the prepared test mortar into a mold from a test mortar molding hole (2) according to standard steps of building mortar experiment specifications and molding;
4) When demoulding, the cement mortar base test block (4) is held by one hand, and the forming frame is lifted vertically upwards by the other hand, so that demoulding is completed.
2. The molding method of a molding frame for mortar tensile bond strength test according to claim 1, wherein: the depth of the test mortar forming hole (2) is 6mm.
3. The molding method of a molding frame for mortar tensile bond strength test according to claim 1, wherein: the wall thickness of the square substrate fixing counter bore (3) is 6mm.
4. The molding method of a molding frame for mortar tensile bond strength test according to claim 1, wherein: the depth of the square substrate fixing counter bore (3) is 9mm.
5. The molding method of a molding frame for mortar tensile bond strength test according to claim 1, wherein: in the step 1), 10 cement mortar base test blocks (4) are in a group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710563123.XA CN107192592B (en) | 2017-07-11 | 2017-07-11 | Forming frame for mortar tensile bonding strength test and forming method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710563123.XA CN107192592B (en) | 2017-07-11 | 2017-07-11 | Forming frame for mortar tensile bonding strength test and forming method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107192592A CN107192592A (en) | 2017-09-22 |
| CN107192592B true CN107192592B (en) | 2023-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710563123.XA Active CN107192592B (en) | 2017-07-11 | 2017-07-11 | Forming frame for mortar tensile bonding strength test and forming method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN107192592B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196225B (en) * | 2019-06-25 | 2022-03-01 | 河南理工大学 | Device and method for testing bonding strength of rock and sprayed concrete contact surface |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104044200A (en) * | 2014-04-24 | 2014-09-17 | 马鞍山十七冶工程科技有限责任公司 | Molding frame used for testing mortar tensile adhesive strength and using method thereof |
| CN204594774U (en) * | 2015-05-27 | 2015-08-26 | 四川省建筑科学研究院 | A kind of reinforcing polymer mortar cohesive strength test samples prepares mould |
| CN205394785U (en) * | 2015-10-21 | 2016-07-27 | 镇江建科建设科技有限公司 | Tensile bonding pressure test forming die of detachable building mortar |
| CN205449632U (en) * | 2016-03-28 | 2016-08-10 | 厦门天润锦龙建材有限公司 | A mould that is used for tensile adhesion strength test piece of mortar to make |
| CN207366294U (en) * | 2017-07-11 | 2018-05-15 | 华南理工大学 | A kind of shaping frame for the experiment of mortar tensile bond strength |
-
2017
- 2017-07-11 CN CN201710563123.XA patent/CN107192592B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104044200A (en) * | 2014-04-24 | 2014-09-17 | 马鞍山十七冶工程科技有限责任公司 | Molding frame used for testing mortar tensile adhesive strength and using method thereof |
| CN204594774U (en) * | 2015-05-27 | 2015-08-26 | 四川省建筑科学研究院 | A kind of reinforcing polymer mortar cohesive strength test samples prepares mould |
| CN205394785U (en) * | 2015-10-21 | 2016-07-27 | 镇江建科建设科技有限公司 | Tensile bonding pressure test forming die of detachable building mortar |
| CN205449632U (en) * | 2016-03-28 | 2016-08-10 | 厦门天润锦龙建材有限公司 | A mould that is used for tensile adhesion strength test piece of mortar to make |
| CN207366294U (en) * | 2017-07-11 | 2018-05-15 | 华南理工大学 | A kind of shaping frame for the experiment of mortar tensile bond strength |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107192592A (en) | 2017-09-22 |
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