CN105890963A - Method for manufacturing test piece for testing concrete mechanics performance through mold - Google Patents
Method for manufacturing test piece for testing concrete mechanics performance through mold Download PDFInfo
- Publication number
- CN105890963A CN105890963A CN201610372884.2A CN201610372884A CN105890963A CN 105890963 A CN105890963 A CN 105890963A CN 201610372884 A CN201610372884 A CN 201610372884A CN 105890963 A CN105890963 A CN 105890963A
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- China
- Prior art keywords
- cylindrical tube
- concrete
- cylindrical
- plastic board
- mould
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Classifications
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- 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
-
- 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
Abstract
The invention discloses a method for manufacturing a test piece for testing concrete mechanics performance through a mold, and relates to the technical field of testing concrete and fiber concrete mechanics performance under the thermal-mechanical coupling effect. A bundled cylindrical pipe set composed of 14-34 cylindrical pipes with the same size is adopted. The inner surface of each cylindrical pipe is coated with lubricating oil in a brushed mode, the cylindrical pipes are filled with concrete mortar while vibration is performed, then, a mold with concrete mortar set in a vibration mode for vibration and flatting, demolding is carried out after curing and molding at normal temperature, and the cylindrical test piece is obtained. The method is simple in technology and safe in operation, and test pieces with diversified shapes and sizes can be obtained; manpower and material resources are saved, energy consumption is reduced, and the cost is low; the corresponding pipe diameter of cylindrical pipes is selected to be matched with a corresponding instrument model.
Description
Technical field
The present invention relates to test the lower concrete of thermal stress coupling (in high temperature) effect and the preparation method in the detection technique field of fiber concrete mechanical property, particularly its sample.
Background technology
Architectural engineering fire frequently occurs in recent years, although concrete structure material itself has certain fire resistance, but the most in succession there occurs and jeopardize structural safety, even results in structure generation total Collapse and the fire incident of destruction.Study concrete structure material performance variation law in the hot environments such as fire and degradation mechanism, there is great economic worth and social effect.
For concrete and the macro-mechanical property Changing Pattern of fiber concrete under research coupling thermal and mechanical effect, common shaping method of specimen is the concrete sample first having poured 150mm × 150mm × 150mm or 100mm × 100mm × 100mm, then to the test specimen rig core boring sampling reaching curing age.But this traditional core boring sampling method can serve problem by band:
(1) cylinder specimen drilled through out all can have a bending in various degree, i.e. it cannot be guaranteed that test specimen vertical.
(2) all can there be a certain degree of out-of-flatness the most upper and lower surfaces of test specimen drilled through out, also to polish flat on sand paper.
(3) to take out less test specimen by powerful drill from concrete test cube, the test specimen got out can be caused a certain degree of damage by rig itself.
The result of the test of concrete and fiber concrete mechanical property under test coupling thermal and mechanical effect all can be affected by above-mentioned three kinds of situations.
Summary of the invention
For the deficiency of above-mentioned situation, present invention aim at designing the method using Mold Making mechanical performance of concrete test test specimen easily and efficiently.
The present invention comprises the following steps:
1) mould prepares: arrange bundled cylindrical tube group in the same side of plastic board, and described cylindrical tube group is made up of 14～34 length, cylindrical tube that internal diameter is identical, and length and internal diameter ratio are 2～2.5: 1, and cylindrical tube inside diameter ranges is 20mm～25mm.The axial plane with plastic board of each cylindrical tube is mutually perpendicular to, and the sidewall at each cylindrical tube offers a vertical masonry joint along cylindrical tube length direction, arranges and cohere adhesive tape outside vertical masonry joint, and the lower end of each cylindrical tube is bonded on plastic board by glue respectively；
2) at each cylindrical tube inner surface brushing lubricating oil of mould, while vibrating in each cylindrical tube fill concrete slurry, then the mould with concrete mortar is placed in vibrations upper ram-jolt is set, and by floating for the concrete mortar of each cylindrical tube upper end；
3) demoulding after the shaping of maintenance at normal temperatures, obtains cylinder specimen.
Column tube group of the present invention is made up of 14～34 equivalently-sized cylindrical tubes, it is ensured that one group of mould filling with concrete mortar has certain weight, facilitates it to vibrate on a vibration table.Present invention process is simple, operates safety, and it provides the benefit that:
1, the size of test specimen can require choose voluntarily and design according to test apparatus, has diversified feature；
2, the shaping of test specimen avoids core boring sampling, saves manpower and materials；
3, the mould of test specimen can repeatedly use, and with low cost.
Present invention process is simple, operates safety, the geomery variation of test specimen；Use manpower and material resources sparingly, reduce energy resource consumption, and with low cost；Corresponding instrument model can be coordinated to select the caliber of supporting cylindrical tube.
Further, in step 2) in, in each cylindrical tube, first fill the concrete mortar of half height, use small punty to vibrate by from four Zhou Dao centers of cylindrical tube, followed by filling slurry after closely knit.This concrete operations mode makes concrete mortar distribution more uniform, and one group of concrete sample before vibrations is more closely knit.
In step 3), during the demoulding, first use cutter bundled cylindrical tube group to be separated on plastic board, then take apart and cohere adhesive tape on each cylindrical tube, in cylindrical tube, then take out sample.By one whole group of cylindrical tube group overall separation with test specimen so that simple to operation, it is to avoid separate the damage that cylindrical tube brings to flat board and mould on plastic board one by one.
Accompanying drawing explanation
Fig. 1 is shaping test piece and the mould structure schematic diagram of the present invention.
Fig. 2 is the structural representation of the cylindrical tube of mould.
Detailed description of the invention
One, mould prepares:
As shown in Figure 1, 2, the same side at plastic board 1 is disposed with, by an elastic tape 3,19 cylindrical tubes 2 is bundled into a bundle.
All being the same size of cylindrical tube 2, can be according to the dimensional requirement of the real time high temperature stove tester of configuration in Electro-hydraulic Servo Testing System and this system, and selecting length and internal diameter ratio is 2～2.5: 1, and cylindrical tube inside diameter ranges is 20mm～25mm.In this example, length and the internal diameter ratio of each cylindrical tube 2 are 2.4: 1, and cylindrical tube internal diameter is 22.5mm.
The axial plane with plastic board 1 of each cylindrical tube 2 is mutually perpendicular to, sidewall at each cylindrical tube 2 offers a vertical masonry joint 5 along cylindrical tube length direction, arrange outside vertical masonry joint 5 and cohere adhesive tape 6(as shown in Figure 2), the lower end of each cylindrical tube 2 is bonded on plastic board by glue 4 respectively.
Two, grouting:
As shown in Figure 1, each cylindrical tube 2 inner surface brushing lubricating oil at mould, in each cylindrical tube 2, first fill the concrete mortar of half height, use small punty to vibrate by from four Zhou Dao centers of cylindrical tube 2, followed by filling the slurry upper end to cylindrical tube 2 after closely knit.
Then the mould with concrete mortar 7 is placed in vibrations upper ram-jolt is set, and by floating for the concrete mortar 7 of each cylindrical tube 2 upper end.
Three, the shaping of maintenance at normal temperatures.
Four, the demoulding, acquirement cylinder specimen:
Cutter is first used to be separated on plastic board 1 by round tube 2, remove elastic tape 3, take apart again and cohere adhesive tape 6 on each cylindrical tube 2, then in cylindrical tube 2, take out cylindrical sample, it is placed on the corresponding number of days of standard curing room maintenance after mark, waits for the mechanical performance of concrete test under coupling thermal and mechanical effect.
Claims (3)
1. the method using Mold Making mechanical performance of concrete test test specimen, it is characterised in that comprise the following steps:
1) mould prepares: arrange bundled cylindrical tube group in the same side of plastic board, described cylindrical tube group is made up of 14～34 length, cylindrical tube that internal diameter is identical, the length of each cylindrical tube and internal diameter ratio are 2～2.5: 1, cylindrical tube inside diameter ranges is 20～25mm, the axial plane with plastic board of each cylindrical tube is mutually perpendicular to, sidewall at each cylindrical tube offers a vertical masonry joint along cylindrical tube length direction, arranging outside vertical masonry joint and cohere adhesive tape, the lower end of each cylindrical tube is bonded on plastic board by glue respectively；
2) at each cylindrical tube inner surface brushing lubricating oil of mould, while vibrating in each cylindrical tube fill concrete slurry, then the mould with concrete mortar is placed in vibrations upper ram-jolt is set, and by floating for the concrete mortar of each cylindrical tube upper end；
3) demoulding after the shaping of maintenance at normal temperatures, obtains cylinder specimen.
Method the most according to claim 1, it is characterised in that in step 2) in, in each cylindrical tube, first fill the concrete mortar of half height, use small punty to vibrate by from four Zhou Dao centers of cylindrical tube, followed by filling slurry after closely knit.
Method the most according to claim 1, it is characterised in that in step 3), during the demoulding, first uses cutter bundled cylindrical tube group to be separated on plastic board, then takes apart and cohere adhesive tape on each cylindrical tube, then takes out sample in cylindrical tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610372884.2A CN105890963B (en) | 2016-05-31 | 2016-05-31 | Using the method for Mold Making mechanical performance of concrete test test specimen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610372884.2A CN105890963B (en) | 2016-05-31 | 2016-05-31 | Using the method for Mold Making mechanical performance of concrete test test specimen |
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| Publication Number | Publication Date |
|---|---|
| CN105890963A true CN105890963A (en) | 2016-08-24 |
| CN105890963B CN105890963B (en) | 2018-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610372884.2A Active CN105890963B (en) | 2016-05-31 | 2016-05-31 | Using the method for Mold Making mechanical performance of concrete test test specimen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109249522A (en) * | 2018-10-31 | 2019-01-22 | 浙江工业大学 | Multifunctional fabricated concrete mold |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655009A (en) * | 2009-07-23 | 2010-02-24 | 西安科技大学 | Method for manufacturing annular test-piece from cylindrical rock-soil material sample |
| CN201600291U (en) * | 2009-12-09 | 2010-10-06 | 中国辐射防护研究院 | Cement solidification mold trial |
| CN204085993U (en) * | 2014-09-19 | 2015-01-07 | 中国地质大学（武汉） | A kind of being used for fixes uniaxial test sample vibrating device |
| CN204116124U (en) * | 2014-10-31 | 2015-01-21 | 山东大学 | Make the equipment of vibro-hydro pressed concrete cubic compressive strength standard component |
| CN204640462U (en) * | 2015-05-29 | 2015-09-16 | 中国矿业大学 | One exempts from the multi-joint cement specimen mold of assembling cylinder |
| CN204882178U (en) * | 2015-06-29 | 2015-12-16 | 深圳大学 | Sample mould of disconnect -type HOPKINSON depression bar experiment |
| CN205157277U (en) * | 2015-11-24 | 2016-04-13 | 奥来国信（北京）检测技术有限责任公司 | Building heat preservation mortar noninflammability detects with examination mould |
-
2016
- 2016-05-31 CN CN201610372884.2A patent/CN105890963B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655009A (en) * | 2009-07-23 | 2010-02-24 | 西安科技大学 | Method for manufacturing annular test-piece from cylindrical rock-soil material sample |
| CN201600291U (en) * | 2009-12-09 | 2010-10-06 | 中国辐射防护研究院 | Cement solidification mold trial |
| CN204085993U (en) * | 2014-09-19 | 2015-01-07 | 中国地质大学（武汉） | A kind of being used for fixes uniaxial test sample vibrating device |
| CN204116124U (en) * | 2014-10-31 | 2015-01-21 | 山东大学 | Make the equipment of vibro-hydro pressed concrete cubic compressive strength standard component |
| CN204640462U (en) * | 2015-05-29 | 2015-09-16 | 中国矿业大学 | One exempts from the multi-joint cement specimen mold of assembling cylinder |
| CN204882178U (en) * | 2015-06-29 | 2015-12-16 | 深圳大学 | Sample mould of disconnect -type HOPKINSON depression bar experiment |
| CN205157277U (en) * | 2015-11-24 | 2016-04-13 | 奥来国信（北京）检测技术有限责任公司 | Building heat preservation mortar noninflammability detects with examination mould |
Non-Patent Citations (1)
| Title |
|---|
| 陈改新等: "《中华人民共和国水利行业标准SL352-2006水工混凝土试验规程》", 23 October 2006 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109249522A (en) * | 2018-10-31 | 2019-01-22 | 浙江工业大学 | Multifunctional fabricated concrete mold |
| CN109249522B (en) * | 2018-10-31 | 2024-04-12 | 浙江工业大学 | Multifunctional assembled concrete mould |
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| Publication number | Publication date |
|---|---|
| CN105890963B (en) | 2018-08-17 |
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