CN102519789B - Mortar surface layer and base body tensile bonding intensity detecting clamp and detecting method - Google Patents
Mortar surface layer and base body tensile bonding intensity detecting clamp and detecting method Download PDFInfo
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- CN102519789B CN102519789B CN201110460359.3A CN201110460359A CN102519789B CN 102519789 B CN102519789 B CN 102519789B CN 201110460359 A CN201110460359 A CN 201110460359A CN 102519789 B CN102519789 B CN 102519789B
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- surface layer
- mortar surface
- base body
- clamping
- clamp
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Abstract
The invention discloses a mortar surface layer and base body tensile bonding intensity detecting clamp, which comprises a top pull-draw plate, a fastening element and two clamp plates, wherein the upper part of each clamp plate is provided with a groove, the lower part of each clamp plate is provided with a clamping part used for clamping a mortar surface layer, when the detecting clamp is used, the clamping part clamps the mortar surface layer, the top pull-draw plate is clamped in the grooves of the two clamp plates, and the two clamp plates are fixedly connected through the fastening element. The invention also discloses a mortar surface layer and base body tensile bonding intensity detecting method using the detecting clamp. Compared with the prior art, the detecting device and the detecting method can be used for testing the real bonding intensity of the mortar surface layer and the base body and have the advantages that the use is convenient, the experiment efficiency is high, and the environment is protected.
Description
Technical field
The present invention relates to the tensile bond strength detection field of mortar surface layer, particularly a kind of mortar surface layer and base body tensile bonding intensity detecting clamp and detection method.
Background technology
Mortar is a kind of conventional building materials, plays bonding, lining cutting and transmission effect of stress in civil engineering work, comprises multiple types such as masonry mortar, motar, ground mortar.By the bonding of mortar and other material, make it into as a wholely, therefore the cohesive strength performance of mortar is extremely important.
In recent years, along with the development of technology of ready mixed mortar, the adhesive property of mortar is more and more paid attention to.Only focus on serviceability from traditional mortar and compressive strength is different, in " premixing mortar " (JG/T 230-2007) standard, motar and waterproof mortar have also been proposed to tensile bond strength requirement.
When being detected, mortar material proposes cohesive strength requires, at " motar " (JGJ/T220-2010) and " premixing mortar application technology code " (JGJ/T 223-2010), also require motar, boundary mortar, Ceramic Tiles adhesive mortar etc. to carry out the detection of entity tensile bond strength, and proposed the on-the-spot tensile bond strength testing method of motar and index request.
In " motar " (JGJ/T 220-2010), the test method of regulation comprises the steps:
(1) in the time of the mortar surface layer arrival regulation length of time, determine sample position;
(2) by the size cutting sample of the top drawing plate adopting, the square plate that drawing board size in top is 100mm × 100mm or the circular slab of diameter 50mm, drawing plate centre bit is equipped with the joint being connected with tensile bond strength detector; Cutting should be gone down to the grass-roots units, and the degree of depth of going down to the grass-roots units should not be greater than 2mm.
(3) stick with glue agent top drawing plate is sticked on screed, top pasting boards should be fixed with adhesive tape etc. after pasting in time.
(4) on top drawing plate, tensile bond strength detector is installed.At the uniform velocity rocking-turn handle boosts, until coat of plaster disconnects, reads reading.
(5) measure cross-sectional area, calculate tensile bond strength.
(6) top drawing plate surface glue stick is cleaned out, surperficial until there is gloss with No. 50 emery cloth wiping drawing plates.
While adopting above-mentioned experimental technique, there is the problem of following several aspects.
(1) need to stick with glue agent sticks on top drawing plate on screed, conventionally the tackifier adopting all requires adhesive surface dry, and conventionally need water in cutting sample process, therefore just can paste after needing to wait for long period samples dried, therefore often occur the problem that is pasted not strongly causing because of adhesive surface humidity.
(2) when tackifier is pasted on facade, when top drawing plate, easily there is the phenomenon of trickling in tackifier, and adhesive flow can be bonding to mortar to cutting seam place, thereby affects test findings.
(3) drawing plate in top is heavier, and tackifier performance cohesive force needs certain hour, and therefore standard-required top pasting boards should be fixed with adhesive tape etc. after pasting in time, and adhesive tape is fixing not easy to operate yet.
(4) tackifier and the adhesive tape that adopt are disposable materials, have problem of environmental pollution.
(5) after experiment, the cleaning of top drawing plate surface glue stick is wasted time and energy very much.
(6) because mortar top layer and inside there are differences, and mortar surface strength is lower, in the time of extension test, the top layer of mortar is opened often, but not pulls open between mortar and base material, cannot obtain the true cohesive strength of mortar surface layer and substrate, and experimental data discreteness is larger.
Summary of the invention
In order to overcome the above-mentioned deficiency of prior art, the object of the present invention is to provide a kind of mortar surface layer and base body tensile bonding intensity detecting clamp, can test the true tensile bond strength of mortar surface layer and substrate, and have advantages of easy to use.Another object of the present invention is to provide the mortar surface layer and the base body tensile bonding intensity detection method that use above-mentioned fixture.
Object of the present invention is achieved through the following technical solutions:
A kind of mortar surface layer and base body tensile bonding intensity detecting clamp, comprise top drawing plate, securing member and two clamping plate; The top of each clamping plate is provided with groove, and bottom is the clamping part for clamping mortar surface layer;
When use, clamping part clamping mortar surface layer, drawing board in top is in the groove of two clamping plate, and two clamping plate are fixedly connected with by securing member.
The center of described top drawing plate is provided with the joint being connected with tensile bond strength detector.
The side that described clamping part contacts with mortar surface layer is provided with indentation or screw thread.
Described securing member comprises bolt, nut and pad; Described clamping plate middle part is provided with bolt hole.
The top of described clamping part is provided with projection.
Described top drawing plate be shaped as circle or rectangle.
A kind of mortar surface layer and base body tensile bonding intensity detection method, comprise the following steps:
(1) in the time of the mortar surface layer arrival regulation length of time, determine sample position;
(2) by the size cutting sample of the top drawing plate adopting, matrix is goed deep in cutting;
(3) clamping part that is positioned at two clamping plate bottoms is placed on sample side, the contact length of clamping part and sample side is less than or equal to the thickness of mortar surface layer; Drawing board in top, in the groove on two clamping plate tops, is fixedly connected with two clamping plate by securing member, makes two clamping plate clamp mortar surface layer;
(4) tensile bond strength detector is installed on the joint of top drawing plate, at the uniform velocity the handle of rocking-turn tensile bond strength detector boosts, until sample disconnects, reads reading;
(5) unload tensile bond strength detector, loosening fasteners, takes out sample;
(6) measure cross-sectional area, calculate tensile bond strength.
Compared with prior art, the present invention has the following advantages and beneficial effect:
(1) after sample cutting, can carry out pull-out test, without waiting for samples dried, the dismounting of combined type fastening clips is quick, and test efficiency is high.
(2) adopt combined type fastening clips, without adopting tackifier and adhesive tape, environmental protection.
(3) combined type fastening clips directly clamps mortar surface layer, can will between mortar and base material, pull open, thereby obtain the true cohesive strength of mortar surface layer and substrate in the time of extension test.
(4), except the tensile bond strength of the mortar surface layer for measuring buildings entity (comprising the various mortars such as motar, ground mortar, waterproof mortar, boundary mortar) and substrate, also can be used for measuring the cohesive strength of the surface layers such as ceramic tile and substrate; Be equipped with the backing plate that supports tensile bond strength detector, be also used in the mortar surface layer of experimental determination subsized specimen and the tensile bond strength of substrate.
Brief description of the drawings
Fig. 1 is the schematic diagram of mortar surface layer of the present invention and base body tensile bonding intensity detecting clamp.
Fig. 2 is the sectional view of the clamping plate of mortar surface layer of the present invention and base body tensile bonding intensity detecting clamp.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
As shown in Figure 1, a kind of mortar surface layer of the present invention and base body tensile bonding intensity detecting clamp, comprise top drawing plate 1, securing member and two clamping plate 2; The center of described top drawing plate 1 is provided with the joint 3 for being connected with binding strength detecting instrument; Securing member comprises bolt 4, nut 5 and pad 6; Wherein, drawing plate in top is the circular slab of diameter 50mm.
As shown in Figure 2, top and the middle part of each clamping plate are semi-cylindrical, and top is provided with groove 7; Middle part is provided with bolt hole 8, and bottom is the clamping part 9 for clamping mortar surface layer; Clamping part 9 is semi-cylindrical, and its side contacting with mortar surface layer is provided with indentation 10.The present embodiment adopts the large mode of clamping plate middle part sectional area ratio clamping part sectional area, forms the projection of clamping part top.
In use, clamping part clamps mortar surface layer to detection fixture of the present invention, and the projection of clamping part top is stuck in the surface of mortar surface layer, the two ends of top drawing plate are stuck in the groove of two clamping plate, bolt passing through bolt hole, then by fastening nuts, two clamping plate are fixedly connected with.
A kind of mortar surface layer of the present invention and base body tensile bonding intensity detection method, comprise the following steps:
(1) in the time of the mortar surface layer arrival regulation length of time, determine sample position;
(2) by the size cutting sample of the top drawing plate adopting, cut the 2mm that goes down to the grass-roots units;
(3) clamping part that is positioned at two clamping plate bottoms is placed on sample side, the contact length of clamping part and sample side equals the thickness of mortar surface layer; Drawing board in top, in the groove on two clamping plate tops, is fixedly connected with two clamping plate by securing member, makes two clamping plate clamp mortar surface layer;
(4) tensile bond strength detector is installed on the joint of top drawing plate, at the uniform velocity the handle of rocking-turn tensile bond strength detector boosts, until sample disconnects, reads reading;
(5) unload tensile bond strength detector, loosening fasteners, takes out sample;
(6) measure cross-sectional area, calculate tensile bond strength.
Embodiment 2
A kind of mortar surface layer of the present invention and base body tensile bonding intensity detecting clamp, comprise top drawing plate, securing member and two clamping plate; Securing member comprises bolt, nut and pad; Wherein, the square plate that drawing plate in top is 40mm × 40mm, the side of nut contact clamp is semisphere.
Each clamping plate top and middle part are tabular, and top is provided with groove; Middle part is provided with bolt hole, and bottom is the clamping part for clamping mortar surface layer; Clamping part is tabular, and its side contacting with mortar surface layer is provided with indentation.The present embodiment adopts the large mode of clamping plate middle part sectional area ratio clamping part sectional area, forms the projection of clamping part top.
In use, clamping part clamps mortar surface layer to detection fixture of the present invention, and the projection of clamping part top is stuck in the surface of mortar surface layer, the both sides of top drawing plate are stuck in the groove of two clamping plate, bolt passing through bolt hole, then by fastening nuts, two clamping plate are fixedly connected with.
A kind of mortar surface layer of the present invention and base body tensile bonding intensity detection method, comprise the following steps:
(1) in the time of the mortar surface layer arrival regulation length of time, determine sample position;
(2) by the size cutting sample of the top drawing plate adopting, cut the 1mm that goes down to the grass-roots units;
(3) respectively the clamping part that is positioned at two clamping plate bottoms is placed on two relative sides of sample, the contact length of clamping part and sample side is less than the thickness of mortar surface layer; Drawing board in top, in the groove on two clamping plate tops, is fixedly connected with two clamping plate by securing member, makes two clamping plate clamp mortar surface layer;
(4) tensile bond strength detector is installed on the joint of top drawing plate, at the uniform velocity the handle of rocking-turn tensile bond strength detector boosts, until sample disconnects, reads reading;
(5) unload tensile bond strength detector, loosening fasteners, takes out sample;
(6) measure cross-sectional area, calculate tensile bond strength.
Above-described embodiment is preferably embodiment of the present invention; but embodiments of the present invention are not limited by the examples; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (7)
1. mortar surface layer and a base body tensile bonding intensity detecting clamp, is characterized in that, comprises top drawing plate, securing member and two clamping plate; The top of each clamping plate is provided with groove, and bottom is the clamping part for clamping mortar surface layer;
When use, clamping part clamping mortar surface layer, drawing board in top is in the groove of two clamping plate, and two clamping plate are fixedly connected with by securing member.
2. mortar surface layer according to claim 1 and base body tensile bonding intensity detecting clamp, is characterized in that, the side that described clamping part contacts with mortar surface layer is provided with indentation or screw thread.
3. mortar surface layer according to claim 1 and base body tensile bonding intensity detecting clamp, is characterized in that, described securing member comprises bolt, nut and pad; Described clamping plate middle part is provided with bolt hole.
4. mortar surface layer according to claim 1 and base body tensile bonding intensity detecting clamp, is characterized in that, the top of described clamping part is provided with projection.
5. mortar surface layer according to claim 1 and base body tensile bonding intensity detecting clamp, is characterized in that, described top drawing plate be shaped as circle or rectangle.
6. mortar surface layer and base body tensile bonding intensity detecting clamp according to claim 1 or 5, is characterized in that, the center of described top drawing plate is provided with the joint being connected with binding strength detecting instrument.
7. mortar surface layer and a base body tensile bonding intensity detection method, is characterized in that, comprises the following steps:
(1) in the time of the mortar surface layer arrival regulation length of time, determine sample position;
(2) by the size cutting sample of the top drawing plate adopting, matrix is goed deep in cutting;
(3) clamping part that is positioned at two clamping plate bottoms is placed on sample side, the contact length of clamping part and sample side is less than or equal to the thickness of mortar surface layer; Drawing board in top, in the groove on two clamping plate tops, is fixedly connected with two clamping plate by securing member, makes two clamping plate clamp mortar surface layer;
(4) tensile bond strength detector is installed on the joint of top drawing plate, at the uniform velocity the handle of rocking-turn tensile bond strength detector boosts, until sample disconnects, reads reading;
(5) unload tensile bond strength detector, loosening fasteners, takes out sample;
(6) measure cross-sectional area, calculate tensile bond strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110460359.3A CN102519789B (en) | 2011-12-31 | 2011-12-31 | Mortar surface layer and base body tensile bonding intensity detecting clamp and detecting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110460359.3A CN102519789B (en) | 2011-12-31 | 2011-12-31 | Mortar surface layer and base body tensile bonding intensity detecting clamp and detecting method |
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| CN102519789A CN102519789A (en) | 2012-06-27 |
| CN102519789B true CN102519789B (en) | 2014-10-22 |
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Families Citing this family (4)
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| CN104198367A (en) * | 2014-09-12 | 2014-12-10 | 山东大学 | Rotation water flow type anti-washout testing device and testing method thereof for semi-rigid material |
| CN106644932A (en) * | 2016-11-25 | 2017-05-10 | 中冶建筑研究总院有限公司 | Method for testing adhering strength of theme plastering |
| CN109959607A (en) * | 2019-04-30 | 2019-07-02 | 中国水利水电第十二工程局有限公司 | A kind of concrete tension bond strength testing method |
| CN114523430A (en) * | 2022-02-24 | 2022-05-24 | 苏州远东砂轮有限公司 | Method for detecting bonding strength of ceramic grinding wheel matrix |
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| DE3416082A1 (en) * | 1984-04-30 | 1985-11-07 | Konrad Marek | Method, test strip and apparatus for testing the tensile strength of paper, cardboard, paperboard and the like |
| CN1603782A (en) * | 2004-10-29 | 2005-04-06 | 河南省高远公路养护设备有限公司 | Interlaminar bonding strength tester for pavement |
| CN2788180Y (en) * | 2005-04-25 | 2006-06-14 | 万建东 | Testing module and pressing device for sand pulp felt anti-drag tension test |
| CN101368893A (en) * | 2008-09-27 | 2009-02-18 | 北京六建集团公司 | Special fixture for curtain wall door and window metal heat insulation section bar tensile test |
| CN202403973U (en) * | 2011-12-31 | 2012-08-29 | 华南理工大学 | Detection clamp for tensile bond strength of mortar surface layer and matrix |
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2011
- 2011-12-31 CN CN201110460359.3A patent/CN102519789B/en not_active Expired - Fee Related
Patent Citations (5)
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|---|---|---|---|---|
| DE3416082A1 (en) * | 1984-04-30 | 1985-11-07 | Konrad Marek | Method, test strip and apparatus for testing the tensile strength of paper, cardboard, paperboard and the like |
| CN1603782A (en) * | 2004-10-29 | 2005-04-06 | 河南省高远公路养护设备有限公司 | Interlaminar bonding strength tester for pavement |
| CN2788180Y (en) * | 2005-04-25 | 2006-06-14 | 万建东 | Testing module and pressing device for sand pulp felt anti-drag tension test |
| CN101368893A (en) * | 2008-09-27 | 2009-02-18 | 北京六建集团公司 | Special fixture for curtain wall door and window metal heat insulation section bar tensile test |
| CN202403973U (en) * | 2011-12-31 | 2012-08-29 | 华南理工大学 | Detection clamp for tensile bond strength of mortar surface layer and matrix |
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| 李荣，等.抹灰砂浆技术规程.《中华人民共和国行业标准 JGJ/T220-2010》.2010, * |
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