CN204241477U - A kind of concrete plasticity limited expansion rate measuring instrument - Google Patents
A kind of concrete plasticity limited expansion rate measuring instrument Download PDFInfo
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- CN204241477U CN204241477U CN201420672638.5U CN201420672638U CN204241477U CN 204241477 U CN204241477 U CN 204241477U CN 201420672638 U CN201420672638 U CN 201420672638U CN 204241477 U CN204241477 U CN 204241477U
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- expansion rod
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Abstract
The utility model relates to a kind of concrete plasticity limited expansion rate measuring instrument, and it comprises digital collection instrument, mould, expansion rod, sensor, target and thin plate; Described mould is the transversal section with side plate and end plate and base plate is square cavity; The expansion rod that two ends have square baffle plate is arranged in cavity body of mould; 2 sensors are fixed on the sensor support base stiff end on mould respectively by respective sensor support base; Square baffle plate top, described expansion rod two ends extends on the upper surface of mould, and and sensor vertical; Be adsorbed on the square baffle plate extended surface at expansion rod two ends for 2 targets measuring by magnet respectively, and insulate with expansion rod baffle plate; Between the square baffle plate both sides end face at expansion rod two ends and die inside face, there is the gap inserting thin plate.The utility model advantage is: measure accurate, easy to operate, can from concrete plasticity to sclerosis whole process supervision concrete limited expansion rate, better evaluate swelling agent performance.
Description
Technical field
The utility model relates to a kind of surveying instrument, particularly relates to a kind of concrete plasticity limited expansion rate measuring instrument.
Background technology
Concrete is current very important civil engineering material, it be gathered materials by Binder Materials, graininess, water, and the additive added if desired and admixture are prepared by a certain percentage, through uniform stirring, become a kind of artificial stone material after sclerosis.But concrete also has himself shortcoming, and contraction is concrete inherent characteristic, and concrete causes the phenomenon of cracking of common occurrence because of contraction.Cement expansive material is a kind of anti-crack and anti-seepage additive of current domestic widespread use, positive effect is served to the quality improving concrete structure, therefore, need to measure concrete limited expansion rate in concrete development process, limited expansion rate metering system directly affects the performance of swelling agent.
At present, concrete limited expansion rate on market, be all start after concrete strength reaches 3-5MPa form removal to measure, measuring the expansivity of mixing swelling agent is demi-inflation rate, limited expansion rate before cannot testing 3MPa, therefore, before 3MPa, the performance of expansive concrete cannot be evaluated, the homogenieity that swelling agent is more partial in its effect detects, and cannot reflect the real performance of swelling agent.
Summary of the invention
The purpose of this utility model is: provide a kind of measure accurate, easy to operate, can from concrete plasticity to sclerosis whole process supervision concrete limited expansion rate, the better concrete plasticity limited expansion rate measuring instrument evaluating swelling agent performance.
To achieve these goals, the technical solution of the utility model is:
A kind of concrete plasticity limited expansion rate measuring instrument, it comprises digital collection instrument, mould, expansion rod, sensor, target and thin plate; Described mould is the transversal section with side plate and end plate and base plate is square cavity; The expansion rod that two ends have square baffle plate is arranged in cavity body of mould; 2 sensors are fixed on the sensor support base stiff end on mould respectively by respective sensor support base; Square baffle plate top, described expansion rod two ends extends on the upper surface of mould, and and sensor vertical; 2 targets for measuring pass through the square baffle plate extended surface that insulation is fixed on expansion rod two ends; Have the gap inserting thin plate between the square baffle plate both sides end face at expansion rod two ends and die inside face, thin plate is used for taking out thin plate after concrete initial set, makes test specimen not produce friction with die inside wall and can move freely.
Further technical scheme is:
Described concrete plasticity limited expansion rate measuring instrument, the length of its thin plate is 300 ~ 350mm, and width is 100 ~ 120mm, and thickness is 1 ~ 2mm.
Described concrete plasticity limited expansion rate measuring instrument, its sensor by wire with automatically read change in displacement and obtain the digital collection instrument that limited expansion rate changes and be connected.
Described concrete plasticity limited expansion rate measuring instrument, its expansion rod is that the square baffle plate be made up of middle reinforcement rod and two ends steel plate is welded.
Described concrete plasticity limited expansion rate measuring instrument, its target is plate shaped; This target is fixed on the square baffle plate extended surface at expansion rod two ends by cementing agent, or is adsorbed on the square baffle plate extended surface at expansion rod two ends by inserted magnet on the insulation frame of target.
Described concrete plasticity limited expansion rate measuring instrument, the material of its mould is cast iron; The material of target is copper or aluminium; Light sheet material is plastics.
Compared with prior art, the utility model has following effect:
1, namely start after concrete formation to measure; 2, the limited expansion rate from plasticity to the whole process of sclerosis can automatically be gathered; 3, both sides arrange thin plate, eliminate sidewall to concrete limitations affect; 4, non-contact method image data, avoids the impact of the power contacting vertical target and cannot the vertical error brought of test specimen, measures accurately; 5, easy to operate.
Accompanying drawing explanation
Fig. 1 is the cross-sectional schematic of the utility model concrete plasticity limited expansion rate measuring instrument front view.
Fig. 2 is the vertical view of Fig. 1.
In figure, Reference numeral is: 1, digital collection instrument, 2, wire, 3, expansion rod, 4, mould, 5, concrete, 6, sensor, 7, sensor support base, 8, target, 9, thin plate.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
A kind of concrete plasticity limited expansion rate measuring instrument, it comprises digital collection instrument 1, mould 4, expansion rod 3, sensor 6, target 8 and thin plate 9; Described mould 4 for the transversal section with side plate and end plate and base plate be square cavity; The expansion rod 3 that two ends have square baffle plate is arranged in mould 4 cavity; 2 sensors 6 are fixed on the sensor support base stiff end on mould respectively by respective sensor support base 7; Square baffle plate top, described expansion rod 3 two ends extends on the upper surface of mould 4, and vertical with sensor 6; 2 targets 8 for measuring pass through the square baffle plate extended surface that insulation is fixed on expansion rod 3 two ends; Have the gap inserting thin plate 9 between the square baffle plate both sides end face at expansion rod 3 two ends and mould 4 medial surface, thin plate 9, for taking out thin plate 9 after concrete 5 initial set, makes test specimen not produce friction with mould 4 madial wall and can move freely.The length of described thin plate 9 is 300 ~ 350mm, and width is 100 ~ 120mm, and thickness is 1 ~ 2mm; The length of the thin plate 9 that the present embodiment is preferential is 320mm, and width is 100mm, and thickness is 1.5mm.Described sensor 6 by wire 2 with automatically read change in displacement and obtain the digital collection instrument 1 that limited expansion rate changes and be connected.Sensor 6 major parameter for for: measuring accuracy is less than 2 μm, adopts the product of Shanghai Dong Tai sensing Science and Technology Ltd..Digital collection instrument major parameter is: logging interval 1 second-9999 seconds, adopts the product of Shenzhen Tuo Purui Electronics Co., Ltd..Described expansion rod 3 is that the square baffle plate be made up of middle reinforcement rod and two ends steel plate is welded.Target 8 is plate shaped; This target 8 is fixed on the square baffle plate extended surface at expansion rod 3 two ends by cementing agent, or is adsorbed on the square baffle plate extended surface at expansion rod 3 two ends by inserted magnet on the insulation frame of target 8.The material of described mould 4 is cast iron; The material of target 8 is copper or aluminium, this implementation of class copper; Thin plate 9 material is plastics.
Described protection domain of the present utility model is not limited to the above embodiments, and other technical scheme identical with the utility model essence all belongs to the scope that the utility model is protected.
Claims (6)
1. a concrete plasticity limited expansion rate measuring instrument, is characterized in that, it comprises digital collection instrument (1), mould (4), expansion rod (3), sensor (6), target (8) and thin plate (9); Described mould (4) for the transversal section with side plate and end plate and base plate be square cavity; The expansion rod (3) that two ends have square baffle plate is arranged in mould (4) cavity; 2 sensors (6) are fixed on the sensor support base stiff end on mould respectively by respective sensor support base (7); Square baffle plate top, described expansion rod (3) two ends extends on the upper surface of mould (4), and vertical with sensor (6); Be fixed on the square baffle plate extended surface at expansion rod (3) two ends by insulation for 2 targets (8) of measuring; Between the square baffle plate both sides end face at expansion rod (3) two ends and mould (4) medial surface, there is the gap inserting thin plate (9), thin plate (9), for taking out thin plate (9) after concrete (5) initial set, makes test specimen not produce friction with mould (4) madial wall and can move freely.
2. the concrete plasticity limited expansion rate measuring instrument according to right 1, is characterized in that, the length of described thin plate (9) is 300 ~ 350mm, and width is 100 ~ 120mm, and thickness is 1 ~ 2mm.
3. the concrete plasticity limited expansion rate measuring instrument according to right 1, is characterized in that, sensor (6) by wire (2) with automatically read change in displacement and obtain the digital collection instrument (1) that limited expansion rate changes and be connected.
4. the concrete plasticity limited expansion rate measuring instrument according to right 1, is characterized in that, expansion rod (3) is that the square baffle plate be made up of middle reinforcement rod and two ends steel plate is welded.
5. the concrete plasticity limited expansion rate measuring instrument according to right 1, it is characterized in that, target (8) is for plate shaped; This target (8) is fixed on the square baffle plate extended surface at expansion rod (3) two ends by cementing agent, or is adsorbed on the square baffle plate extended surface at expansion rod (3) two ends by inserted magnet on the insulation frame of target (8).
6. the concrete plasticity limited expansion rate measuring instrument according to right 1, is characterized in that, the material of mould (4) is cast iron; The material of target (8) is copper or aluminium; Thin plate (9) material is plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420672638.5U CN204241477U (en) | 2014-11-12 | 2014-11-12 | A kind of concrete plasticity limited expansion rate measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420672638.5U CN204241477U (en) | 2014-11-12 | 2014-11-12 | A kind of concrete plasticity limited expansion rate measuring instrument |
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| CN204241477U true CN204241477U (en) | 2015-04-01 |
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| CN201420672638.5U Active CN204241477U (en) | 2014-11-12 | 2014-11-12 | A kind of concrete plasticity limited expansion rate measuring instrument |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442896A (en) * | 2016-11-25 | 2017-02-22 | 江苏洛尧智慧通信科技有限公司 | Joint mixture expansion rate checking device |
| CN106770429A (en) * | 2017-01-16 | 2017-05-31 | 长沙理工大学 | The measure device and application method of rubber-asphalt mixture expansion rate and temperature relation |
| CN107014987A (en) * | 2017-06-06 | 2017-08-04 | 四川大学 | The intelligent Multiinputoutput concrete component health monitor method of square-section self-induction |
| CN108344740A (en) * | 2018-02-06 | 2018-07-31 | 河海大学 | A kind of expansion soil scene method of discrimination based on PIV technologies |
-
2014
- 2014-11-12 CN CN201420672638.5U patent/CN204241477U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442896A (en) * | 2016-11-25 | 2017-02-22 | 江苏洛尧智慧通信科技有限公司 | Joint mixture expansion rate checking device |
| CN106442896B (en) * | 2016-11-25 | 2019-01-29 | 广州振中建设有限公司 | A kind of gap filler expansion rate verifying attachment |
| CN106770429A (en) * | 2017-01-16 | 2017-05-31 | 长沙理工大学 | The measure device and application method of rubber-asphalt mixture expansion rate and temperature relation |
| CN107014987A (en) * | 2017-06-06 | 2017-08-04 | 四川大学 | The intelligent Multiinputoutput concrete component health monitor method of square-section self-induction |
| CN107014987B (en) * | 2017-06-06 | 2023-04-25 | 四川大学 | Rectangular section self-induction intelligent multi-input-output concrete member health monitoring method |
| CN108344740A (en) * | 2018-02-06 | 2018-07-31 | 河海大学 | A kind of expansion soil scene method of discrimination based on PIV technologies |
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