CN103675242B - Measuring method and the device of a kind of concrete or mortar volume distortion - Google Patents
Measuring method and the device of a kind of concrete or mortar volume distortion Download PDFInfo
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- CN103675242B CN103675242B CN201210314761.5A CN201210314761A CN103675242B CN 103675242 B CN103675242 B CN 103675242B CN 201210314761 A CN201210314761 A CN 201210314761A CN 103675242 B CN103675242 B CN 103675242B
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Abstract
The invention discloses measuring method and the device of a kind of concrete or mortar volume distortion, to pour into by the mixture of the good concrete of requirement of engineering mixing or mortar in the die trial box of an opened type, then the die trial box entirety of the opened type that concrete or mortar mixture are housed is put into adiabatic heat-insulation bottle, then use with graded tube, the seal cover of wireway and thermometer is built the bottle sealing of adiabatic heat-insulation bottle, by graded tube to pouring in adiabatic heat-insulation bottle not and water-soluble liquid, make this liquid die trial box all be flooded and is full of adiabatic heat-insulation bottle inner chamber, then whole adiabatic heat-insulation bottle is put into constant temperature waters, can accurately measure concrete or volumetric expansion or the contraction distortion situation of mortar under adiabatic condition by the situation of liquid side in graded tube like this. the present invention not only has advantages of that certainty of measurement is high, but also has the advantages such as simple in structure, easy to operate.
Description
Technical field
The measuring method and the device that the present invention relates to a kind of concrete or mortar volume distortion, belong to concrete deformation field of measuring technique.
Background technology
At present, along with advancing by leaps and bounds of domestic economy construction, a large amount of civil engineerings are emerged in large numbers like the mushrooms after rain, and high-strength high-performance concrete and self-compacting concrete have obtained extensive application. meanwhile, unit in charge of construction runs into the early stage problem of Cracking of many concrete, for example, after basement shear wall concreting completes, when form removal, has occurred regular penetrability crack, and this phenomenon is particularly evident in high-strength concrete and self-compacting concrete. according to the shrinkage test in existing national standard " Standard for test methods of longterm performance and durability of ordinary concrete standard " GBT50082-2009, the method of its medium-term and long-term contraction is that the concrete mix preparing is placed in the die trial of 100mm × 100mm × 515mm, after concrete hardening, being placed on (20 ± 1 DEG C of General Requirements temperature, humidity 60%) under uniform temperature environment tests by measuring motions such as amesdials. because sample dimensions is less than normal and be directly exposed under the laboratory condition of regulation, its tested concrete hydrating heat can scatter and disappear very soon, so this method of testing cannot be simulated inside concrete that volume the is larger hydration reaction due to aquation temperature rise aggravation, and the acute variation that cannot shrink in thermal expansion, aquation concrete, carry out under drying shrinkage impact is measured. for addressing these problems, in Chinese patent literature, application number is 02277190.5, denomination of invention is " a kind of device of measuring concrete contraction percentage ", once disclosed a kind of by measured concrete being contained in the sample bag of a sealing, then the sample bag of sealing is put into one and be provided with scale glass tube and water-filled closed container bottle, measure concrete Volume Changes in sample bag by the liquid level of glass tube observation water. although this method can reflect concrete Volume Changes situation more all sidedly, but because being is contained in tested concrete in the sample bag of a sealing, its concrete coolant-temperature gage situation of change cannot be measured with the corresponding situation of change of its volume, and this metering system is to reflect that by the variation of sample bag volume volume of concrete wherein changes, because sample bag and concrete are two kinds of different materials, at identical temperature, the change of its volume is not identical, the difference of this Volume Changes can directly affect certainty of measurement, and concrete volume can be subject to the constraint of sample bag in changing, this constraint can affect again concrete natural situation of change, and concrete is after packing in sample bag, in the time that sample bag is sealed, is difficult to guarantee and does not have certain space in the inner chamber of concrete and sample bag, due to the existence in this space, also can affect certainty of measurement. not only exist by this way the problem of troublesome poeration, and its certainty of measurement is also not ideal.
Summary of the invention
The object of the invention is to: provide a kind of measuring method and device of simple in structure, easy to operate and concrete that certainty of measurement is higher or mortar volume distortion, to overcome the deficiencies in the prior art.
The present invention is achieved in that the measuring method of a kind of concrete of the present invention or mortar volume distortion is, to pour into by the mixture of the good concrete of requirement of engineering mixing or mortar in the die trial box of an opened type, thermometer is inserted in the mixture of concrete or mortar, then the die trial box entirety of the opened type that concrete or mortar mixture are housed is put into adiabatic heat-insulation bottle, then use with graded tube, the seal cover of wireway is built the bottle sealing of adiabatic heat-insulation bottle, and the top that makes thermometer is exposed to seal cover top, after all gaps place of seal cover all being sealed above with paraffin simultaneously, by graded tube to pouring in adiabatic heat-insulation bottle not and water-soluble liquid, make this liquid die trial box all be flooded and is full of adiabatic heat-insulation bottle inner chamber, when wireway has evenly, after bubble-free liquid is discharged, with stopper by the mouth of pipe sealing of wireway, then whole adiabatic heat-insulation bottle is put into constant temperature waters, can accurately measure concrete or volumetric expansion or the contraction distortion situation of mortar under adiabatic condition by the situation of liquid side in graded tube like this.
Above-mentioned is not atoleine or kerosene with water-soluble liquid.
The volume of the concrete in the above-mentioned die trial box of pouring opened type into or the mixture of mortar be less than opened type die trial box volume and be 1～3 liter.
The water temperature in above-mentioned constant temperature waters is 20 ± 1 DEG C.
Above-mentioned concrete or the mixture of mortar are the not solidified mixture of newly mixing.
Measurement mechanism for of the present invention a kind of concrete of said method or mortar volume distortion is: this device comprises and is provided with the constant temperature waters case of attemperating unit and the adiabatic heat-insulation bottle with seal cover, adiabatic heat-insulation bottle can be put into the constant temperature waters of constant temperature waters case, on seal cover, be provided with graded tube, wireway and thermometer, graded tube is the straight tube of pass-through type and passes seal cover, and the scale section of graded tube is arranged on the top of seal cover; The thermometric section of thermometer is arranged on the below of seal cover, and the scale section of thermometer is arranged on the top of seal cover; The air inlet of wireway also arranges thereunder through seal cover, the gas outlet of wireway is arranged on the top of seal cover, and be provided with stopper on the mouth of pipe of gas outlet, in adiabatic heat-insulation bottle, be provided with the die trial box of an opened type that can take out from the bottle mouth position of adiabatic heat-insulation bottle.
Above-mentioned adiabatic heat-insulation bottle is Dewar bottle.
In the constant temperature waters of above-mentioned constant temperature waters case, can place more than 2 adiabatic heat-insulation bottles.
In the thermometric section of said temperature meter, cover has the sleeve pipe of heat-conducting.
The centre-height of the gas outlet end of above-mentioned wireway higher than the whole scale section height of the graded tube of seal cover top 1/4 but lower than 2/3 of whole scale section height.
Owing to having adopted technique scheme, the present invention is directed to existing problem in prior art, the die trial box of first putting into an opened type put into by concrete or mortar mixture by the present invention, then the die trial box entirety of the opened type that concrete or mortar mixture are housed is put into after adiabatic heat-insulation bottle, again by graded tube to pouring in adiabatic heat-insulation bottle not and water-soluble liquid, make this liquid die trial box all be flooded and is full of after adiabatic heat-insulation bottle inner chamber, can accurately observe and measure concrete or the Volume Changes situation of mortar under different temperatures by thermometer and graded tube like this, and can utilize simultaneously thermometer measure to concrete or mortar the temperature rise situation of change under adiabatic condition. because not needing the die trial box of the opened type to concrete or mortar mixture are installed, the present invention seals, and can easily and accurately the tested concrete of aequum or mortar be poured in die trial box, because concrete or mortar can not be subject to the constraint of die trial box in the time changing, therefore, in the time measuring, the variation of concrete or mortar can not exert an influence to die trial box, and the present invention can accurately reflect and measure the Volume Changes situation of concrete or mortar. so compared with prior art, the present invention not only has advantages of that certainty of measurement is high, but also has the advantages such as simple in structure, easy to operate in the present invention.
Brief description of the drawings
The structural representation of Fig. 1 when to be that the adiabatic heat-insulation of apparatus of the present invention is bottled have die trial box;
Fig. 2 is that adiabatic heat-insulation bottle of the present invention is placed in the structural representation in the constant temperature waters of constant temperature waters case.
Description of reference numerals: 1-constant temperature waters case, 1.1-attemperating unit, 1.2-constant temperature waters, 2-seal cover, 3-adiabatic heat-insulation bottle, 4-graded tube, 5-wireway, 5.1-stopper, 6-thermometer, 7-die trial box, 8-sleeve pipe, the mixture of 9-concrete or mortar, 10-liquid.
Detailed description of the invention
Below, the present invention is further illustrated in conjunction with the accompanying drawings and embodiments.
Embodiments of the invention: in the time that enforcement is of the present invention, first produce the measurement mechanism of a kind of concrete of the present invention or mortar volume distortion, the structural representation of this device as depicted in figs. 1 and 2, this device comprises and is provided with the constant temperature waters case 1 of attemperating unit 1.1 and the adiabatic heat-insulation bottle 3 with seal cover 2, constant temperature waters case 1 can directly adopt on market and sell finished product, and adiabatic heat-insulation bottle 3 preferably adopts Dewar bottle of the prior art, in the time selecting constant temperature waters case 1, should ensure that adiabatic heat-insulation bottle 3 can all put into the constant temperature waters 1.2 of constant temperature waters case 1, under normal conditions, in order to carry out the measurement of multiple samples simultaneously, be preferably in the constant temperature waters 1.2 of constant temperature waters case 1 and can place 2～8 adiabatic heat-insulation bottles 3, when making, install a graded tube 4 and a wireway 5 and a thermometer 6 on seal cover 3, the clear glass straight tube that this graded tube 4 is pass-through type, is passed seal cover 3, and makes the scale section of graded tube 4 be arranged on the top of seal cover 3, the thermometric section of thermometer 6 is arranged on to the below of seal cover 3, the scale section of thermometer 6 is arranged on to the top of seal cover 3, can reuse in order to make thermometer, can in the thermometric section of thermometer 6, overlap the sleeve pipe 8 of a heat-conducting, the sleeve pipe 8 of this heat-conducting can adopt heat conductive rubber cover of the prior art, heat-conducting plastic cover or heat-conducting metal sleeve pipe, wireway 5 is made into L shaped shape, and by the air inlet of wireway 5 through the rear setting of seal cover 3 thereunder, the gas outlet of wireway 5 is arranged on to the top of seal cover 3, in order to reach better result of use, should make wireway 5 gas outlet end centre-height higher than the whole scale section height of the graded tube 4 of seal cover 3 tops 1/4 but should be lower than 2/3 of whole scale section height, then on the mouth of pipe of wireway 5 gas outlets, install the stopper 5.1 that a rubber is made, in adiabatic heat-insulation bottle 3, put the die trial box 7 of an opened type that can take out from the bottle mouth position of adiabatic heat-insulation bottle 3 simultaneously, the die trial box 7 of this opened type can adopt plastics or metal material to be made into the planform of drum or rectangular-shape barrel formula.
In the time implementing the measuring method of a kind of concrete of the present invention or mortar volume distortion, first according to the needs of engineering, the mixture 9 of the good concrete of mixing or mortar in a traditional way, then be under not solidified state at the mixture 9 of this concrete or mortar, be poured in the die trial box 7 of an opened type that (its volume of pouring the mixture 9 of concrete in the die trial box 7 of opened type or mortar into should be less than the volume of the die trial box 7 of opened type, be generally 1～3 liter of left and right, pouring volume is 2 liters in the present embodiment), then die trial box 7 entirety of the opened type that concrete or mortar mixture 9 are housed are put into adiabatic heat-insulation bottle 3, then use with graded tube 4, the seal cover 2 of wireway 5 and thermometer 6 is built the bottle sealing of adiabatic heat-insulation bottle 3, and the thermometric section that makes thermometer is inserted in the mixture 9 of concrete or mortar (in the thermometric section of thermometer, preferably overlap one can heat-conducting sleeve pipe 8), after all gaps place of seal cover 3 all being sealed above with paraffin simultaneously, stopper on wireway 5 5.1 is taken down, by graded tube 4, to pouring in adiabatic heat-insulation bottle 3, this can not adopt atoleine of the prior art or kerosene with water-soluble liquid with water-soluble liquid 10(), make this liquid 10 die trial box 7 all be flooded and is full of adiabatic heat-insulation bottle 3 inner chambers, when the gas outlet of wireway 5 has evenly, after bubble-free liquid 10 is discharged, with stopper 5.1 by the gas outlet mouth of pipe sealing of wireway 5, then whole adiabatic heat-insulation bottle 3 is put into the constant temperature waters 1.2 of constant temperature waters case 1, the water temperature in constant temperature waters 1.2 is controlled to 20 ± 1 DEG C simultaneously, can accurately measure concrete or volumetric expansion or the contraction distortion situation of mortar 9 under adiabatic condition by the situation of liquid levels in graded tube 4 like this.
Claims (8)
1. the measuring method of a concrete or mortar volume distortion, it is characterized in that: will pour into by the mixture of the good concrete of requirement of engineering mixing or mortar in the die trial box of an opened type, the volume of pouring the mixture of concrete in the die trial box of opened type or mortar into be less than opened type die trial box volume and be 1～3 liter, then thermometer is inserted in the mixture of concrete or mortar, then the die trial box entirety of the opened type that concrete or mortar mixture are housed is put into adiabatic heat-insulation bottle, then use with graded tube, the seal cover of wireway is built the bottle sealing of adiabatic heat-insulation bottle, and the top that makes thermometer is exposed to seal cover top, after all gaps place of seal cover all being sealed above with paraffin simultaneously, by graded tube to pouring in adiabatic heat-insulation bottle not and water-soluble liquid, make this liquid die trial box all be flooded and is full of adiabatic heat-insulation bottle inner chamber, when wireway has evenly, after bubble-free liquid is discharged, with stopper by the mouth of pipe sealing of wireway, then whole adiabatic heat-insulation bottle is put into constant temperature waters, can accurately measure concrete or volumetric expansion or the contraction distortion situation of mortar under adiabatic condition by the situation of liquid side in graded tube like this.
2. the measuring method of concrete according to claim 1 or mortar volume distortion, is characterized in that: described is not atoleine or kerosene with water-soluble liquid.
3. the measuring method of concrete according to claim 1 or mortar volume distortion, is characterized in that: the water temperature in described constant temperature waters is 20 ± 1 DEG C.
4. the measuring method of concrete according to claim 1 or mortar volume distortion, is characterized in that: the mixture of concrete or mortar is the not solidified mixture of newly mixing.
5. the measurement mechanism of a concrete or mortar volume distortion, comprise and be provided with the constant temperature waters case (1) of attemperating unit (1.1) and the adiabatic heat-insulation bottle (3) with seal cover (2), adiabatic heat-insulation bottle (3) can be put into the constant temperature waters (1.2) of constant temperature waters case (1), it is characterized in that: on seal cover (3), be provided with graded tube (4), wireway (5) and thermometer (6), the straight tube that graded tube (4) is pass-through type also passes seal cover (3), and the scale section of graded tube (4) is arranged on the top of seal cover (3), the centre-height of the gas outlet end of wireway (5) higher than the whole scale section height of the graded tube (4) of seal cover (3) top 1/4 but lower than 2/3 of whole scale section height, the thermometric section of thermometer (6) is arranged on the below of seal cover (3), and the scale section of thermometer (6) is arranged on the top of seal cover (3), the air inlet of wireway (5) also arranges thereunder through seal cover (3), the gas outlet of wireway (5) is arranged on the top of seal cover (3), and on the mouth of pipe of gas outlet, be provided with stopper (5.1), in adiabatic heat-insulation bottle (3), be provided with the die trial box (7) of an opened type that can take out from the bottle mouth position of adiabatic heat-insulation bottle (3).
6. the measurement mechanism of concrete according to claim 5 or mortar volume distortion, is characterized in that: described adiabatic heat-insulation bottle (3) is Dewar bottle.
7. the measurement mechanism of concrete according to claim 5 or mortar volume distortion, is characterized in that: in the constant temperature waters (1.2) of constant temperature waters case (1), can place more than 2 adiabatic heat-insulation bottles (3).
8. the measurement mechanism of concrete according to claim 5 or mortar volume distortion, is characterized in that: in the thermometric section of thermometer (6), cover has the sleeve pipe (8) of heat-conducting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210314761.5A CN103675242B (en) | 2012-08-30 | 2012-08-30 | Measuring method and the device of a kind of concrete or mortar volume distortion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210314761.5A CN103675242B (en) | 2012-08-30 | 2012-08-30 | Measuring method and the device of a kind of concrete or mortar volume distortion |
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| Publication Number | Publication Date |
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| CN103675242A CN103675242A (en) | 2014-03-26 |
| CN103675242B true CN103675242B (en) | 2016-05-18 |
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| CN201210314761.5A Expired - Fee Related CN103675242B (en) | 2012-08-30 | 2012-08-30 | Measuring method and the device of a kind of concrete or mortar volume distortion |
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Cited By (2)
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| CN107064471A (en) * | 2016-12-19 | 2017-08-18 | 河海大学 | Cement-based material volume deformation test method and device under a kind of temperature action |
| CN107255707A (en) * | 2017-03-03 | 2017-10-17 | 徐州中联混凝土有限公司 | A kind of short-cut method for detecting concrete early stage cubic deformation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107064471A (en) * | 2016-12-19 | 2017-08-18 | 河海大学 | Cement-based material volume deformation test method and device under a kind of temperature action |
| CN107255707A (en) * | 2017-03-03 | 2017-10-17 | 徐州中联混凝土有限公司 | A kind of short-cut method for detecting concrete early stage cubic deformation |
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