CN204630909U - A kind of concrete material layers cementing strength test test unit - Google Patents
A kind of concrete material layers cementing strength test test unit Download PDFInfo
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- CN204630909U CN204630909U CN201520373788.0U CN201520373788U CN204630909U CN 204630909 U CN204630909 U CN 204630909U CN 201520373788 U CN201520373788 U CN 201520373788U CN 204630909 U CN204630909 U CN 204630909U
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Abstract
A kind of concrete material layers cementing strength test test unit, belongs to the test unit detecting the bonding strength of concrete between layers or between concrete and other materials.It comprises bearing and piece fixture, top board and lower platen is respectively equipped with above and below bearing, hole is had in the center of top board and lower platen, piece fixture comprises upper connecting rod and lower link, the termination of upper connecting rod and lower link installs test specimen connecting cylinder respectively, installation testing sample between test specimen connecting cylinder.What this device was visual in image has reflected concrete layers cementing intensity, the difficulty of solve complicated operation when in the past adopting universal testing machine test, fixing difficulty, not having operating platform, improve success ratio and the testing accuracy of test simultaneously, saved manpower and time, reduced cost.
Description
Technical field:
A kind of concrete material layers cementing strength test test unit, belong to the test unit detecting the bonding strength of concrete between layers or between concrete and other materials, in particular for detecting the test unit of the layers cementing intensity of sprayed concrete and the bonding strength between sprayed concrete and sillar.
Background technology:
The method of the concrete bond strength of domestic existing detection is the test method introduced according to " concrete for hydraulic structure testing regulations " (DL/T5150-2001) Appendix B.The method test procedure is as follows:
1., for the test specimen of shaping one group of 15 × 15 × 15cm of the source material mixture ratio close by glutinous structural concrete, standard curing was taken out after 14 days, with reference to " concrete splitting test for tensile strength ", test specimen is split into six pieces stand-by.
2. the old concrete test specimen of will rive, splitting surface cleans up and keeps moisture state, vertically puts into 15cm cube die trial side (die trial wall is close in light face, forms the space being of a size of 150 × 150 × 75mm between splitting surface and die trial).
3. mixing novel concrete, pours in the die trial of placing old concrete test block, plugs and pounds jolt ramming.Standard curing 28 days after the demoulding.
4. arrive regulation and take out test specimen the length of time, face will be cohered as splitting surface according to " concrete splitting test for tensile strength ", and carry out the test of bonding new concrete to old concrete intensity.
" Technical code for shotcrete rock bolts shore " (GB50086-2001) appendix A is be placed in template by sillar for the test method of the bonding strength of sprayed concrete and sillar, concrete is sprayed under the condition identical with practical structures, be sprayed into rear maintenance to 7d length of time, periphery is removed with patterning method, be processed into the test cube (wherein rock and concrete thickness are respectively about 50mm) that the length of side is 100mm, maintenance to 28 day length of time, at sillar and concrete joint surface place, try to achieve the bonding strength value of concrete and sillar with split the law.Described in " water power hydraulic engineering construction of anchor shotcreting specification " (DL/T5181-2003) annex I, method is identical with it.
But these test methods intuitively can not embody concrete bonding strength between the layers significantly.
Summary of the invention:
Problem to be solved in the utility model is exactly provide a kind of structure simple, easy to use for above deficiency, easy to operate, can reflect the device of the test findings of the bonding strength of concrete between layers or between concrete and other materials visual in imagely.Its technical scheme is as follows:
It comprises bearing and piece fixture, its gordian technique is respectively equipped with top board and lower platen above and below bearing, hole is had in the center of top board and lower platen, piece fixture comprises upper connecting rod and lower link, lower link is through the hole of lower platen, one end is fixed on lower platen, the other end is positioned at bearing, upper connecting rod is through the hole of top board, one end suit drawing instrument, the other end is positioned at bearing, and the termination of the upper connecting rod and lower link that are positioned at bearing installs test specimen connecting cylinder respectively, installation testing sample between test specimen connecting cylinder.
Described lower link adopts nut and lower platen to fix.
The height of described test specimen connecting cylinder is 2 ~ 3 centimetres.
The shape of described bearing is any one in rectangular parallelepiped, square or right cylinder.
The shape of described test sample is any one in rectangular parallelepiped, square or right cylinder.
Compared with prior art, the beneficial effect that the utility model has is:
1, adopt bearing fixing test sample, provide operating platform to drawing instrument, overcome in prior art drawing instrument after adopting universal testing machine fixation test sample and lack the difficulty of operating platform.Adopt drawing instrument load application, improve the accuracy of test.
2, the setting of connecting cylinder increases the bonding force between test sample and fixture, improves the success ratio of test.
3, adopt drawing instrument load application, can reflect between two layer concretes intuitively or concrete with other materials as the bonding situation between rock.
Accompanying drawing illustrates:
Fig. 1 is the utility model structural representation.
Embodiment:
See Fig. 1, the utility model comprises bearing 8 and piece fixture, its gordian technique is respectively equipped with top board 6 and lower platen 2 above and below bearing 8, hole is had in the center of top board 6 and lower platen 2, piece fixture comprises upper connecting rod 5 and lower link 9, lower link 9 is through the hole of lower platen, one end is fixed on lower platen, the other end is positioned at bearing, upper connecting rod 5 is through the hole of top board, one end suit drawing instrument 7, the other end is positioned at bearing, the termination of the upper connecting rod 5 and lower link 9 that are positioned at bearing installs test specimen connecting cylinder 3 respectively, installation testing sample 4 between test specimen connecting cylinder 3, the setting of connecting cylinder is to increase fixture and the bonding force testing sample.
Described lower link 9 adopts nut 1 and lower platen to fix.
The height of described test specimen connecting cylinder 3 is 2 ~ 3 centimetres, adopts adhering with epoxy resin to test sample and connecting cylinder after connecting cylinder put into by test sample.
The shape of described bearing 8 is any one in rectangular parallelepiped, square or right cylinder.
The shape of described test sample 4 is any one in rectangular parallelepiped, square or right cylinder.
With anchoring fixture, upper connecting rod 5 is fixed on drawing instrument 7 during use, test can be started to drawing instrument pressurization.One end of the light fixing test sample of bearing 8 energy, the test sample other end is in free state, realizes the drawing to sample by drawing instrument.
Claims (5)
1. a concrete material layers cementing strength test test unit, comprise bearing (8) and piece fixture, it is characterized in that above and below bearing (8), be respectively equipped with top board (6) and lower platen (2), hole is had in the center of top board (6) and lower platen (2), piece fixture comprises upper connecting rod (5) and lower link (9), lower link (9) is through the hole of lower platen, one end is fixed on lower platen, the other end is positioned at bearing, upper connecting rod (5) is through the hole of top board, one end suit drawing instrument (7), the other end is positioned at bearing, the termination of the upper connecting rod (5) and lower link (9) that are positioned at bearing installs test specimen connecting cylinder (3) respectively, installation testing sample (4) between test specimen connecting cylinder (3).
2. concrete material layers cementing strength test test unit according to claim 1, is characterized in that lower link (9) adopts nut (1) and lower platen to fix.
3. concrete material layers cementing strength test test unit according to claim 1, is characterized in that the height of test specimen connecting cylinder (3) is 2 ~ 3 centimetres.
4. concrete material layers cementing strength test test unit according to claim 1, is characterized in that the shape of bearing (8) is any one in rectangular parallelepiped, square or right cylinder.
5. concrete material layers cementing strength test test unit according to claim 1, the shape that it is characterized in that testing sample (4) is any one in rectangular parallelepiped, square or right cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520373788.0U CN204630909U (en) | 2015-06-02 | 2015-06-02 | A kind of concrete material layers cementing strength test test unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520373788.0U CN204630909U (en) | 2015-06-02 | 2015-06-02 | A kind of concrete material layers cementing strength test test unit |
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| CN204630909U true CN204630909U (en) | 2015-09-09 |
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| CN201520373788.0U Active CN204630909U (en) | 2015-06-02 | 2015-06-02 | A kind of concrete material layers cementing strength test test unit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109959606A (en) * | 2019-04-29 | 2019-07-02 | 中国水利水电第十二工程局有限公司 | The device of on-site test gunite concrete and country rock bonding strength test |
| CN109991074A (en) * | 2019-04-30 | 2019-07-09 | 中国水利水电第十二工程局有限公司 | Stretch special fixture |
| CN110160876A (en) * | 2019-02-20 | 2019-08-23 | 中交隧道工程局有限公司 | It is a kind of to use III plate-type unballasted track bed plate L-type steel muscle pull-out test device of CRTS |
| CN112878986A (en) * | 2021-01-22 | 2021-06-01 | 西南石油大学 | Device and method for testing mechanical property and sealing property of cement sheath-formation interface of oil and gas well |
-
2015
- 2015-06-02 CN CN201520373788.0U patent/CN204630909U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110160876A (en) * | 2019-02-20 | 2019-08-23 | 中交隧道工程局有限公司 | It is a kind of to use III plate-type unballasted track bed plate L-type steel muscle pull-out test device of CRTS |
| CN109959606A (en) * | 2019-04-29 | 2019-07-02 | 中国水利水电第十二工程局有限公司 | The device of on-site test gunite concrete and country rock bonding strength test |
| CN109991074A (en) * | 2019-04-30 | 2019-07-09 | 中国水利水电第十二工程局有限公司 | Stretch special fixture |
| CN112878986A (en) * | 2021-01-22 | 2021-06-01 | 西南石油大学 | Device and method for testing mechanical property and sealing property of cement sheath-formation interface of oil and gas well |
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