CN1699931A - Concrete autogenous volumetric deformation measuring apparatus - Google Patents
Concrete autogenous volumetric deformation measuring apparatus Download PDFInfo
- Publication number
- CN1699931A CN1699931A CN 200510050171 CN200510050171A CN1699931A CN 1699931 A CN1699931 A CN 1699931A CN 200510050171 CN200510050171 CN 200510050171 CN 200510050171 A CN200510050171 A CN 200510050171A CN 1699931 A CN1699931 A CN 1699931A
- Authority
- CN
- China
- Prior art keywords
- valve
- pipe
- sample chamber
- concrete
- ampuliform
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a measuring instrument for concrete autogenously volume deforming, which comprises the following parts: specimen chamber with its two ends opened inside the organic glass cylinder, an identical section area reference pipe at the bottleneck, wherein the big end of specimen chamber is sealed on bottom; the socket is opened with holes drawn by one pipe to one end of differential pressure sensor though first valve; the bottom is opened with holes drawn by one pipe to the other end of differential pressure sensor though second valve and the third valve is parallels between; It puts the mixed concrete into specimen chamber and fills into the chamber and reference pipe; It closes first and second value and opens the third value when filling water; It opens first and second valve till the water level of specimen chamber and reference pipe is at even, and closes the third valve when measuring. It changes concrete volume will give rise to water level of specimen chamber changes, uses differential pressure sensor for measuring.
Description
Technical field
The present invention relates to measurement mechanism, relate in particular to a kind of concrete autogenous volumetric deformation measuring apparatus.
Background technology
Measure concrete autogenous volumetric deformation at present and have following problem:
1, concrete autogenous volumetric deformation is that the hydration of Binder Materials causes, this hydration begins from the concrete mixing process, because the concrete mix begins to be overall plastic property, the distortion of this moment is often owing to the excessive test error that causes of measuring instrument rigidity is bigger.Given this, China's " concrete for hydraulic structure testing regulations " (SD105-82) stipulates: except that specific (special) requirements is arranged, generally began to measure concrete autogenous volumetric deformation behind the concrete formation in 24 hours.
2, the measurement of autogenous volumetric deformation should keep the waterproof state, and general way is test specimen to be shown wrap the effusion that one deck paraffin is stopped moisture, can not make test specimen be in top-secret state and do in fact like this.
Because the mensuration of concrete autogenous volumetric deformation is the energy measurement early deformation not, can not really keep test specimen waterproof state, causes test figure incorrect.Handsome referring to closing, the research of concrete autogenous volumetric deformation, Chinese water power research institute scientific research collection of thesis, 138-146.
Summary of the invention:
In order to overcome above-mentioned defective, this use is novel to provide a kind of comparatively accurately concrete autogenous volumetric deformation measuring apparatus, this measuring instrument can finish from concrete mixing the measurement of concrete autogenous volumetric deformation, and guarantee that concrete is in the waterproof state in the whole measuring process, thereby guaranteed the accuracy of measuring.
The technical solution adopted for the present invention to solve the technical problems is:
In columniform organic glass tube, have up-small and down-big, the ampuliform sample chamber that open at two ends, have a tubular at ampuliform sample chamber bottleneck position, the reference pipe that open the upper end, sectional area with reference to pipe is identical with the sectional area of sample chamber bottleneck, the big end of ampuliform sample chamber adds the sealing of O RunddichtringO with base, have an aperture that is communicated with the ampuliform sample chamber on the base, draw after first valve connects an end of differential pressure pick-up with a pipe, have aperture with reference to the pipe bottom, draw after second valve connects the other end of differential pressure pick-up the 3rd valve in parallel between two tubes with another root pipe.
The beneficial effect that the present invention has is: can measure concrete autogenous volumetric deformation more accurately, this apparatus structure is simple, and is easy to operate.
Description of drawings
Accompanying drawing is a structural principle synoptic diagram of the present invention.
Among the figure: 1, ampuliform sample chamber, 2, with reference to pipe, 3, the organic glass tube, 4, the O RunddichtringO, 5, base, 6, differential pressure pick-up, 7, valve, 8, valve, 9, valve.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
In columniform organic glass tube 3, have up-small and down-big, the ampuliform sample chamber 1 that open at two ends, have a tubular at ampuliform sample chamber 1 bottleneck position, the reference pipe 2 that open the upper end, sectional area with reference to pipe 2 is identical with the sectional area of sample chamber 1 bottleneck, ampuliform sample chamber 1 big end adds 4 sealings of O RunddichtringO with base 5, have an aperture that is communicated with ampuliform sample chamber 1 on the base 5, draw after first valve 7 connects an end of differential pressure pick-up 6 with a pipe, have aperture with reference to pipe 2 bottoms, draw after second valve 8 connects the other end of differential pressure pick-up 6 the 3rd valve 9 in parallel between two tubes with another root pipe.
Basic functional principle of the present invention is as follows:
The concrete that mixes and stirs is packed in the good rubber membrane bag of fluid-tight elasticity, put into ampuliform sample chamber 1 then, water filling in the ampuliform sample chamber 1, water level is advisable to be positioned at the bottleneck middle part.Toward injecting water in 2 with reference to managing.In the process of water filling, first valve 7, second valve 8 are closed, and the 3rd valve 9 is opened.After water filling was finished, first valve 7, second valve 8 were opened, and the water level of reference pipe 2 and ampuliform sample chamber 1 automatically adjusts, till balance.When measuring beginning the 3rd valve 9 is closed.When volume of concrete changes, can cause the variation of water level in the ampuliform sample chamber 1, this variation is measured by differential pressure pick-up 6.Can calculate the height that water level rises or descends in the ampuliform sample chamber by pressure difference, with this sectional area that highly multiply by bottleneck, the volume that obtains promptly is concrete autogenous volumetric deformation.
One organic glass right cylinder is processed, as shown in drawings, comprised the sample chamber of an ampuliform and the reference pipe of tubular, its bottom is opening all.The higher precision differential pressure sensor passed through water pipe and sample chamber and linked to each other with bottom with reference to pipe.First valve 7, second valve 8, the 3rd valve 9 are time protection differential pressure pick-ups 6 for water filling, and the 3rd valve 9 has also played and regulated ampuliform sample chamber 1 and with reference to the effect of water levels in the pipe 2 simultaneously.
In order to increase the accuracy of measurement, take following measure:
1, sample chamber adopts the form of variable cross section, i.e. ampuliform, and a tube middle water level is positioned at bottleneck in the process of the test.The body cross section is big, can be so that place the sample of more amount, and bottleneck is little, can change the fluctuation in stage that causes by sensitive more reaction volume.The bottleneck diameter dimension can design according to the concrete autogenous volumetric deformation amount, and purpose is sensitively to react the SEA LEVEL VARIATION that causes because of volume change.
2, the sectional area with reference to pipe is identical with the sectional area of sample chamber bottleneck, can avoid causing test error because of the difference of water evaporation quantity.
Above-mentioned embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (1)
1, concrete autogenous volumetric deformation measuring apparatus, it is characterized in that: in columniform organic glass tube (3), have up-small and down-big, the ampuliform sample chamber (1) that open at two ends, have a tubular at ampuliform sample chamber (1) bottleneck position, the reference pipe (2) that open the upper end, sectional area with reference to pipe (2) is identical with the sectional area of sample chamber (1) bottleneck, the big end of ampuliform sample chamber (1) adds O RunddichtringO (4) sealing with base (5), have an aperture that is communicated with ampuliform sample chamber (1) on the base (5), draw after first valve (7) connects an end of differential pressure pick-up (6) with a pipe, have aperture with reference to pipe (2) bottom, draw after second valve (8) connects the other end of differential pressure pick-up (6) the 3rd valve (9) in parallel between two tubes with another root pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510050171 CN1699931A (en) | 2005-06-20 | 2005-06-20 | Concrete autogenous volumetric deformation measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510050171 CN1699931A (en) | 2005-06-20 | 2005-06-20 | Concrete autogenous volumetric deformation measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1699931A true CN1699931A (en) | 2005-11-23 |
Family
ID=35476087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510050171 Pending CN1699931A (en) | 2005-06-20 | 2005-06-20 | Concrete autogenous volumetric deformation measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1699931A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371678C (en) * | 2006-03-16 | 2008-02-27 | 江苏博特新材料有限公司 | Method and apparatus for testing early self-deformation of concrete |
| CN101187643B (en) * | 2007-12-06 | 2010-09-08 | 上海交通大学 | Solid-liquid phase change material normal pressure thermal expansion rate and work volume digital measuring device |
| CN105424887A (en) * | 2015-12-09 | 2016-03-23 | 中国石油天然气股份有限公司 | Method for measuring expansion rate of inorganic water shutoff agent and device thereof |
| CN107907411A (en) * | 2017-11-14 | 2018-04-13 | 中国水利水电科学研究院 | A kind of method for measuring concrete overall process autogenous volumetric deformation |
| CN107941847A (en) * | 2017-10-27 | 2018-04-20 | 中国石油天然气集团公司 | A kind of test device and method for the deformation of cement concrete early stage frost heave |
| CN110146688A (en) * | 2019-05-21 | 2019-08-20 | 哈尔滨工业大学 | A kind of concrete early deformation detection device and its detection method |
| CN110146687A (en) * | 2019-05-21 | 2019-08-20 | 哈尔滨工业大学 | Detection device and method for concrete early deformation under various environment temperatures |
-
2005
- 2005-06-20 CN CN 200510050171 patent/CN1699931A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371678C (en) * | 2006-03-16 | 2008-02-27 | 江苏博特新材料有限公司 | Method and apparatus for testing early self-deformation of concrete |
| CN101187643B (en) * | 2007-12-06 | 2010-09-08 | 上海交通大学 | Solid-liquid phase change material normal pressure thermal expansion rate and work volume digital measuring device |
| CN105424887A (en) * | 2015-12-09 | 2016-03-23 | 中国石油天然气股份有限公司 | Method for measuring expansion rate of inorganic water shutoff agent and device thereof |
| CN107941847A (en) * | 2017-10-27 | 2018-04-20 | 中国石油天然气集团公司 | A kind of test device and method for the deformation of cement concrete early stage frost heave |
| CN107907411A (en) * | 2017-11-14 | 2018-04-13 | 中国水利水电科学研究院 | A kind of method for measuring concrete overall process autogenous volumetric deformation |
| CN110146688A (en) * | 2019-05-21 | 2019-08-20 | 哈尔滨工业大学 | A kind of concrete early deformation detection device and its detection method |
| CN110146687A (en) * | 2019-05-21 | 2019-08-20 | 哈尔滨工业大学 | Detection device and method for concrete early deformation under various environment temperatures |
| CN110146687B (en) * | 2019-05-21 | 2022-03-01 | 哈尔滨工业大学 | Device and method for detecting early deformation of concrete at various environmental temperatures |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1699931A (en) | Concrete autogenous volumetric deformation measuring apparatus | |
| CN104807720B (en) | A kind of method based on gas pressure intensity method measurement object density | |
| CN201130143Y (en) | Porous medium material permeability coefficient determinator | |
| EP2955499A1 (en) | Automatic measuring instrument and measuring method for unconventional natural gas content | |
| CN100439895C (en) | Oil elastic modulus detector based on volume elastic modulus definition | |
| CN101813690B (en) | Testing device for simulating warp self-weight settlement consolidation process by settlement column indoors | |
| CN207096051U (en) | A kind of experimental rig for measuring rockfill materials water absorption under the conditions of different pressures | |
| CN1731178A (en) | Urban domestic garbage degradation-compression tester | |
| CN201575962U (en) | Measuring instrument for free gas content in liquid | |
| CN201607352U (en) | Quantitative sampling device for liquid | |
| CN201778806U (en) | Full-automatic multifunctional isothermal line adsorption and desorption and pollution evaluation experimental instrument | |
| CN2807217Y (en) | Concrete autogenous volume deformation measurer | |
| CN2901296Y (en) | Oil-liquid elasticity modulus detector based on volume elasticity modules definition | |
| CN2816809Y (en) | Device for detecting seepage coefficient and seepage-resisting gradient ratio | |
| CN201628707U (en) | Device capable of simultaneously measuring hydraulic conductivity of plurality of sample plants | |
| CN208488455U (en) | A kind of novel rock core displacement test device | |
| CN108132178B (en) | Oil field injection water performance evaluation device and evaluation method | |
| CN204228561U (en) | Crude oil water content determinator | |
| CN100501347C (en) | Laboratory gas collection metering device | |
| CN106771048B (en) | The high pressure water enchroachment (invasion) pore structure water content test macro of raw coal containing gas and method | |
| CN206292140U (en) | A kind of particulate infiltration migration experimental rig based on opposite opened osmos tube | |
| CN201671615U (en) | Weighing type oil-well metering separator | |
| CN201464321U (en) | Float type fiber-grating liquid densitometer | |
| CN206905837U (en) | A kind of Duplicate Samples graduated cylinder | |
| CN209102465U (en) | A kind of experiment fermentation gas collection and measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |