CN201600319U - Cement mortar bonding pull-out test clamp and forming mold - Google Patents
Cement mortar bonding pull-out test clamp and forming mold Download PDFInfo
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- CN201600319U CN201600319U CN2010201022946U CN201020102294U CN201600319U CN 201600319 U CN201600319 U CN 201600319U CN 2010201022946 U CN2010201022946 U CN 2010201022946U CN 201020102294 U CN201020102294 U CN 201020102294U CN 201600319 U CN201600319 U CN 201600319U
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Abstract
The utility model discloses a cement mortar bonding pull-out test clamp and a forming mold. The clamp comprises a clamp ring, a bolt hole is arranged at the center of the upper end surface of the clamp ring, two pin holes which are arranged on the same horizontal plane and have parallel axes are arranged on an annular wall of the clamp ring, and the two pin holes are both inserted with pins. The forming mold comprises a molding ring and a ferrule, wherein the molding ring consists of two semi-annular steel components, butting surfaces of the two semi-annular steel components are respectively provided with butting clamp grooves, inner walls of the two semi-annular steel components are respectively provided with a slotted pipe fitting, the ferrule is a two-piece structure, joint surfaces of the two pieces are respectively provided with a pin hole plate, the pin hole plates which correspond to each other up to down are connected by pins, and the ferrule is fixed on the outer ring surface of the forming ring. The cement mortar bonding pull-out test clamp and the forming mold have high working efficiency and lower cost without pollution, reduce labor intensity, and can be adaptable to testing bonding performance of existing base materials of the construction field.
Description
One. technical field: the utility model relates to a kind of anchor clamps and mould of testing sand-cement slurry and matrix material Adhesive Tensile Performance of Young.
Two. background technology: sand-cement slurry is a kind of commonly used wiping one's face, build by laying bricks or stones and the unstructuredness supporting material, and the adhesive property of itself and matrix material is one of key index of its effect quality of decision.There is bigger difference in the method that is adopted when domestic different research institution tests the adhesive property of mortar at present, and domestic different testing regulations is tested the adhesive property of mortar also different regulations.
Domestic part test rules and the mortar bonding test form that the scholar adopted are as follows:
1, " epoxy resin mortar technical regulation " DL/T 5193-2004 employing figure of eight test specimen and corresponding anchor clamps, instrument carry out.Half figure of eight cement bonded sand lumps is put into " 8 " the font die trial that scribbles release agent, on two-layer new sand cutting slurry, the slotting also floating surface of smashing of pouring into of another half point of die trial.The test specimen maintenance is done tension test to certain after date that makes on universal testing machine.
2, " polymer-modified cement mortar testing regulations " DL/T 5126-2001 adopts square test specimen to carry out adhesion test.Moulding die trial: be metal test mould removably, divide two-layer up and down.The matrix sole piece is of a size of 70mm * 70mm * 20mm, and the top mortar specimen is of a size of 40mm * 40mm * 40mm, has junction button to connect between the two.Upper clamp is the steel plate of 40mm * 40mm * 40mm, and it is the steel connecting rod of 9mm that there is diameter the middle, links to each other with following mortar specimen by binder, and aligned position must not be crooked, leaves standstill 24h in testing laboratory; Afterwards, steel backing plate (its thickness is 3mm, and the interior length of side is 43mm, and the outer length of side is the square loop of 68mm) middle part is placed on the substrate mortar specimen, in the stretching clamp below again test specimen being embedded.
The form of the sand-cement slurry adhesion test that 3, domestic part scholar adopted:
Scholar's Li Zhendong etc., the ordinary mortar test block is cut into is of a size of the little test block of 40mm * 40mm * 80mm and is fixed on mould one end that is of a size of 40mm * 40mm * 160mm, the other end is then poured into a mould the modified mortar of newly mixing, vibratory compaction then, form the interface bonding of the old and new's mortar, adopt anti-folding method to carry out the cohesive strength test.It is the Adhesive Tensile Performance of Young of reaction material indirectly.
Scholar Li Fang, Wang Peiming is with the molded good concrete block that is of a size of 250mm * 250mm * 50mm, upper surface steel brush bristle, the moisture maintenance is to 28d, at the upper surface smearing thickness is the screed of 10mm, maintenance is measured cohesive strength to 90d with SHJ-40 type cohesive strength of decorative tile and concrete strength detector in air.This method requires to carry out with epoxy glue in advance the bonding of anchor clamps and test specimen.
Scholar Tian Tian is shaped to mortar the cube specimen of 70.7mm * 70.7mm * 70.7mm, maintenance after the length of time with its cutting, be polished into the test block of 70mm * 70mm * 20mm, the die trial that 40mm * 40mm * 10mm is installed on the substrate masses top that will handle through concrete testing requirements, the disposable modified mortar of packing into, form removal behind (24 ± 2) h, by concrete testing requirements maintenance to stipulating to test cohesive strength the length of time.This adhesion test carries out according to DL/T 51262-2001 " polymer-modified cement mortar testing regulations ".
Hohai University Wu Yan China, adopt figure of eight test specimen with reference to " concrete for hydraulic structure testing regulations " DL/T 5150-2001, the conventional cement mortar test specimen of making is in advance broken into two, as old mortar, second half molded polyurethanes sand-cement slurry, maintenance is carried out adhesion test with electronic bending test machine to the length of time; For relatively he also adopts prism to carry out adhesion test: test methods such as method and above-mentioned scholar's Li Zhendong are identical.
It is the Eight characters mould of 40mm * 40mm that Wu Jinglong adopts the midsection, and materials processing becomes the cross section to be about the square of 40mm * 40mm, and thickness is that 10mm～20mm carries out adhesion test.
The non-structure that the Japanese material science of the Peng Chun of South China Science ﹠ Engineering University unit reference association formulates has been carried out the design of adhesion test with the standard test method of polymer cement mortar, concrete operations are identical with test methods such as above-mentioned scholar's Li Zhendongs, maintenance is surveyed its cohesive strength to the length of time by the method for anti-folding after the moulding.
4, the problem of mortar bonding test method existence at present:
Comprehensive as can be seen above-mentioned, there is bigger difference in the method that domestic different research institution is adopted when the adhesive property of mortar is tested, and distinct methods test result comparability is relatively poor.Domestic different testing regulations is tested the adhesive property of mortar also different regulations.
The figure of eight test specimen that " epoxy resin mortar technical regulation " DL/T 5193-2004 is adopted exists stress to concentrate when testing problem, and because of its bond area too little, if use it for the test of mortar and concrete adhesive property, make this problem more outstanding, discreteness further increases and this test method can not be used for the existing concrete adhesive property test of working-yard.
The square test specimen that " polymer-modified cement mortar testing regulations " DL/T 5126-2001 adopts is alleviated to some extent than the former stress concentration phenomenon, and lifting surface area increases to some extent, and the discreteness of its intensity of surveying reduces relatively.But when adopting this mode to carry out adhesion test, to and be bondd with binder anchor clamps by the mortar specimen of drawing, for better centering, want earlier the mortar specimen surface to be flattened processing, in this process, cause the local lesion of the face of cohering easily, and require test specimen surface-treated flatness height, not so be difficult to guarantee the centering of drawing, this will make that labour intensity is big, inefficiency, and binder cost height work the mischief to staff's health, simultaneously environment is produced and pollute, in addition, its set time and cohesive strength are influenced by environmental temperature, and job schedule is difficult to guarantee, if just do not test when intensity is high, degumming phenomenon can occur, bonding when testing once more, its intensity of surveying must be subjected to the influence of last time drawing and on the low side.Just need a lot of such anchor clamps under the big situation of tested number, the cleaning of anchor clamps is pretty troublesome, and experimentation cost also can further improve.
Also ubiquity the matrix material processing difficulties to the employed test method of other scholars, labour intensity is big, the test period is long and can not do the adhesive property test on the existing concrete test face at the construction field (site).
Can see by above-mentioned analysis, at present exist inefficiency in the sand-cement slurry adhesion test, labour intensity is big, cost is high and can not existing at the construction field (site) concrete test face on the problem such as pull-out test that bonds.
Three. the utility model content:
Technical problem to be solved in the utility model is: overcome the deficiencies in the prior art, a kind of high efficiency is provided, reduces labour intensity, pollution-free and cost is lower and be applicable to the sand-cement slurry bonding drawing test clamp and the mould thereof of the existing matrix material adhesive property test in construction site.
The utility model is that the technical scheme that the technical solution problem is taked is:
A kind of sand-cement slurry bonding drawing test clamp, contain the anchor clamps ring, the center of described anchor clamps ring upper surface is provided with bolt hole, so that be connected with the power transmission bolt of drawing instrument, shown in the annulus wall of anchor clamps ring be provided with parallel axes and two pin holes on a surface level, be provided with pin in two described pin holes, this pin with shown in the pin hole be clearance fit.
Shown in an end of pin be round table-like.
A kind of sand-cement slurry bonding pull-out test mould, contain moulding ring and hoop, described moulding ring is made of two semicircular ring steel parts, be respectively arranged with the contraposition draw-in groove on the interface of described two semicircular ring steel parts, be respectively arranged with a grooving pipe fitting on the inwall of described two semicircular ring steel parts, two pin holes on the anchor clamps ring of the shape of two grooving pipe fittings and position and sand-cement slurry bonding drawing test clamp are complementary; Described hoop is a two halves formula structure, and its interface is respectively arranged with pin hole sheet, and Dui Ying pin hole sheet is plugged on together by pin up and down, and described hoop is fixed on the annulus outside surface of described moulding ring.
The interface of two semi-circular members of described hoop is provided with the hoop ear.
The beneficial effects of the utility model are:
1, the pairing test specimen of the utility model is the regular round section of adhesive surface, and area is relatively large, has reduced to concentrate and the big phenomenon of test figure discreteness because of the little stress that produces of section of test specimen.
2, the utility model does not need adhesive, so anchor clamps do not need to solidify glue after test specimen of test heavy cleaning process, reduced the test link, increase work efficiency and can not cause environmental pollution, mould and drawing fixture can reuse, and do not use adhesive, experimentation cost is greatly reduced.
3, the utility model does not need retrofit because only need make surfaceness to matrix material handles, and has alleviated labour intensity and has saved working time, so job schedule is guaranteed.
4, the portable characteristics that the utility model had makes its test that is used for the existing matrix material adhesive property in construction site become possibility.
5, the utility model not only is suitable for the test of conventional cement mortar adhesive property, also is applicable to various modified cement mortar adhesive property tests.
Four. description of drawings:
Fig. 1 is the structural representation of sand-cement slurry bonding drawing test clamp;
Fig. 2 is the vertical view of sand-cement slurry bonding drawing test clamp shown in Figure 1;
Fig. 3 is the structural representation of pin;
Fig. 4 is the right view of pin shown in Figure 3;
Fig. 5 is the structural representation of sand-cement slurry bonding pull-out test mould;
Fig. 6 is the vertical view of sand-cement slurry bonding pull-out test mould shown in Figure 5.
Five. embodiment:
Embodiment: referring to Fig. 1-Fig. 2, among the figure, 1-anchor clamps ring, 2-bolt hole, 3-pin hole, 4-pin, 11-moulding ring, 12-hoop, 13-grooving pipe fitting, 14-pin, 15-pin hole sheet, 16-hoop ear, 17-contraposition draw-in groove.
Sand-cement slurry bonding drawing test clamp contains anchor clamps ring 1, the center of anchor clamps ring 1 upper surface is provided with bolt hole 2, so that be connected with the power transmission bolt of drawing instrument, the annulus wall of anchor clamps ring 1 is provided with parallel axes and two pin holes 3 on a surface level, be provided with pin 4 in two pin holes 3, this pin 4 is a clearance fit with pin hole 3, and an end of pin 4 is round table-like.
Sand-cement slurry bonding pull-out test mould contains moulding ring 11 and hoop 12, moulding ring 11 is made of two semicircular ring steel parts, be respectively arranged with contraposition draw-in groove 17 on the interface of two semicircular ring steel parts, two pin holes 3 that are respectively arranged with on the inwall of two semicircular ring steel parts on the anchor clamps ring 1 of the shape of 13, two grooving pipe fittings 13 of a grooving pipe fitting and position and sand-cement slurry bonding drawing test clamp are complementary; Hoop 12 is a two halves formula structure, and its interface is respectively arranged with pin hole sheet 15, and Dui Ying pin hole sheet 15 is plugged on together by pin 14 up and down, and hoop 12 is fixed on the annulus lateral surface of moulding ring 11.The interface of two semi-circular members of hoop 12 is provided with hoop ear 16.
The utility model sand-cement slurry bonding drawing fixture and mould are by the steel making and homemade (SHJ-40 type) tapestry brick bonds and the concrete strength detector is used, and also is fit to the multi-functional drawing detector of other models.Its using method is:
Sand-cement slurry bonding drawing test clamp and mould embodiment mainly are divided into two steps: the one, and the moulding of sand-cement slurry bonding testing piece, during specimen molding after release agent is smeared in moulding ring 11 inboards of mould, the mould assembling together, be put in and carry out the surface-treated substrate material surface, divide in the secondary injection moulding ring 11 mixing the sand-cement slurry that makes, with diameter is the slotting puddling reality of rod iron of 6-8mm, it is floating to carry out the surface afterwards, form removal behind the 24h (is extracted both sides pin 14, gently that the moulding hoop left and right sides is horizontally separated), maintenance is to testing the pull-out test that bonds the length of time.The 2nd, adopt tapestry brick bonding and concrete strength detector (SHJ-40 type) and this drawing fixture to test, anchor clamps ring 1 is buckled on the cement mortar specimen, both sides pin 4 is inserted and is stuck in the grooves on two sides of mortar specimen, bolt with tapestry brick bonding and concrete strength detector (SHJ-40 type) links to each other with the bolt hole 2 of the power transmission bolt of anchor clamps ring 1, starts tapestry brick bonding and concrete strength detector (SHJ-40 type) bonding testing piece is loaded on test specimen adhesive surface destruction and reads the test value of pulling capacity.
Bonding drawing fixture application example:
Adopt sand-cement slurry bonding drawing test clamp of the present utility model and mould, Zhengzhou University's Henan Province's construction material and hydro-structure key lab have carried out experimental study and have obtained satisfied experimental study achievement aqueous epoxy resin emulsion modified cement mortar and concrete bonding.Following application example only is the partial data of experimental study.The concrete substrate material surface is handled, and adopts the wire brush bristle to handle surfaceness is on the same level substantially.Test has considered that water-cement ratio, poly-glue ratio, sand glue than three influence factors, have designed 16 groups by orthogonal design method, every group of 3 test specimens.Test findings sees Table 1.
Table 1 adhesion test is table as a result
Annotate: volume unit is MPa in the table.
Data computation is known in the his-and-hers watches, and in these 16 groups of test findings, except that 2,5,10 and 11 4 groups, the ratio that all can guarantee to have at least the difference of two intensity levels and three value mean values and this mean value in all the other 12 groups is in 15%.The discreteness of test gained data is less relatively.If according to " polymer-modified cement mortar testing regulations " every group of pull-out test that carries out 5 test specimens, the discreteness of test gained data can be littler.
The factor that influences cohesive strength discreteness size is a lot, degree of irregularity as the substrate material surface processing, the degrees of irregularity of mortar itself etc., the stability of test apparatus and the reliability of test fixture also are the factors that the test figure dispersion degree is produced certain influence.Initial analysis by above-mentioned test figure is thought: the bonding pull-out test that adopts the utility model test fixture to carry out mortar and matrix material is feasible.
Claims (4)
1. sand-cement slurry bonding drawing test clamp, contain the anchor clamps ring, it is characterized in that: the center of described anchor clamps ring upper surface is provided with bolt hole, so that be connected with the power transmission bolt of drawing instrument, the annulus wall of described anchor clamps ring is provided with parallel axes and two pin holes on a surface level, be provided with pin in two described pin holes, this pin with shown in the pin hole be clearance fit.
2. sand-cement slurry bonding drawing test clamp according to claim 1, it is characterized in that: an end of described pin is round table-like.
3. sand-cement slurry bonding pull-out test mould, contain moulding ring and hoop, it is characterized in that: described moulding ring is made of two semicircular ring steel parts, be respectively arranged with the contraposition draw-in groove on the interface of described two semicircular ring steel parts, be respectively arranged with a grooving pipe fitting on the inwall of described two semicircular ring steel parts, two pin holes on the anchor clamps ring of the shape of two grooving pipe fittings and position and sand-cement slurry bonding drawing test clamp are complementary; Described hoop is a two halves formula structure, and its interface is respectively arranged with pin hole sheet, and Dui Ying pin hole sheet is plugged on together by pin up and down, and described hoop is fixed on the annulus outside surface of described moulding ring.
4. sand-cement slurry bonding pull-out test mould according to claim 3, it is characterized in that: the interface of two semi-circular members of described hoop is provided with the hoop ear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201022946U CN201600319U (en) | 2010-01-27 | 2010-01-27 | Cement mortar bonding pull-out test clamp and forming mold |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201022946U CN201600319U (en) | 2010-01-27 | 2010-01-27 | Cement mortar bonding pull-out test clamp and forming mold |
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| CN201600319U true CN201600319U (en) | 2010-10-06 |
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| CN2010201022946U Expired - Lifetime CN201600319U (en) | 2010-01-27 | 2010-01-27 | Cement mortar bonding pull-out test clamp and forming mold |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101762459B (en) * | 2010-01-27 | 2011-12-21 | 郑州大学 | Bonding and drawing test clamp and forming mould for cement mortar |
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2010
- 2010-01-27 CN CN2010201022946U patent/CN201600319U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101762459B (en) * | 2010-01-27 | 2011-12-21 | 郑州大学 | Bonding and drawing test clamp and forming mould for cement mortar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101006 Effective date of abandoning: 20100127 |