CN108267365A - The test equipment and method of concrete tensile strength under a kind of difference curing condition - Google Patents
The test equipment and method of concrete tensile strength under a kind of difference curing condition Download PDFInfo
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- CN108267365A CN108267365A CN201711390272.7A CN201711390272A CN108267365A CN 108267365 A CN108267365 A CN 108267365A CN 201711390272 A CN201711390272 A CN 201711390272A CN 108267365 A CN108267365 A CN 108267365A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
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Abstract
The test equipment of concrete tensile strength under a kind of difference curing condition, it includes template system, temperature system, loading system, acquisition system, control system and computer system；Template system includes cope plate, lower template, side template and end template, encloses composition casting space；End template center is equipped with circular hole, is equipped with reinforcing bar in circular hole, and barrier steel plate is equipped between the top and bottom ends in the middle part of two side templates；Cope plate is worn there are two quartz pushrod, and displacement sensor is equipped between two quartz pushrods；Temperature system includes the water tank with water pump, and water tank has outlet pipe and return pipe；Loading system includes driving device and transmission shaft, and transmission the tip of the axis is fixedly connected with reinforcing bar outer end；The input terminal of acquisition system is connect with displacement sensor, the first temperature sensor, second temperature sensor and load transducer, and the output terminal of control system is connect with driving device, temperature regulating device and water pump；Acquisition system and control system are connect with computer system.
Description
Technical field
The invention belongs to water conservancy and hydropower technical field, the survey of concrete tensile strength under particularly a kind of different curing conditions
Try apparatus and method for.
Background technology
Concrete is a kind of fragile material of multiphase, and tensile strength is far below compression strength.Hydro-concrete Structures by
Thicker in its section, hydration heat of cement is difficult to scatter and disappear, and concrete is caused to generate drawing under the excessive temperature difference and inside and outside restrained condition
Stress.Once tensile stress is more than its tensile strength, concrete will crack, to the safety during hydro-structure construction time, operation
Property generate seriously affect.
The tensile strength of concrete draws the parameters such as Creep Coefficient, needs by the indoor related axial loading equipemtn of experiment
It obtains, is used further to large volume concrete structural numerical simulation calculating, decision is provided for dam construction.
It is the key factor for influencing uniaxial constrained test result that axial tension, which acts on concrete sample axis,.But by
In the discreteness of concrete material and the limitation of experimental condition, axis pulling experiment will avoid eccentric highly difficult completely.Once occur
Bias, then measured intensity error is larger.At present, concrete in uniaxial constrained test is the evaluation coagulation mainly used in experiment
One of test method of native Creep Characteristics and cracking property, but there are still rooms for improvement for this method：
(1) the pre-buried pull rod in end：By pull rod to concrete end power transmission.Pull rod number is usually one, to ensure pull rod
There is enough cohesive forces between concrete, it also can symmetrical pre-buried more pull rods.The measurement of test specimen is by being mounted in the middle part of test specimen
Displacement sensor.
(2) external clamping fixture：Test specimen two ends are designed to dumbbell shaped, and test specimen shape of template is similar with test specimen, by expanding end
To test specimen power transmission.In making, it is desirable that die size is accurate, Striking symmetry, to ensure that test specimen is mounted on testing machine, applies and draws
Force direction is axially coincident with test specimen.External clamping is simple and practicable, but is extremely difficult to good axis and draws effect：On the one hand, external clamping
Fixture changes when pressure and pulling force are transmitted with the contact surface of test specimen, is susceptible to non-axle center loading；On the other hand, by
It changes in sample dimensions, stress concentration is easily generated at variable cross-section, cause test specimen cracking test result invalid.
Invention content
The object of the present invention is to provide the test equipment and method of concrete tensile strength under a kind of different curing conditions,
Concrete cracking risk under different curing conditions can precisely be assessed, be carried for large volume concrete structural temperature control optimization design
For parameter basis.
To achieve the above object, the present invention takes following technical scheme：
The test equipment of concrete tensile strength under a kind of difference curing condition, it includes template system, temperature system, adds
Loading system, acquisition system, control system and computer system；
The template system includes cope plate, lower template and two symmetrical side templates with temperature control channel, Formation cross-section
Rectangular tubular；The side template both ends are respectively equipped with the end template with temperature control channel, the cope plate, lower template, side form
The casting space for forming sealing is enclosed between plate and end template；The end template center is equipped with circular hole, is equipped with and this in the circular hole
The parallel reinforcing bar of casting space length direction, it is inside and outside which is located at the end template respectively；Two side templates
Barrier steel plate is equipped between the top and bottom ends at middle part；The cope plate is worn there are two quartz pushrod, respectively positioned at the barrier steel plate
Both sides are equipped with displacement sensor between two quartz pushrods；The cope plate, lower template, side template, end template and this pour sky
Between center be equipped with the first temperature sensor；
The temperature system includes the water tank with water pump, which has outlet pipe and return pipe, which connects respectively
To the water inlet end of the temperature control channel of the cope plate, lower template, side template and end template, which is respectively connected to the upper mold
Plate, lower template, side template and end template temperature control channel water outlet；Temperature regulating device is equipped in the water tank and second temperature passes
Sensor；
The loading system includes driving device, the driving device and a transmission axis connection, and the transmission shaft can be pushed away
It draws；The transmission the tip of the axis is fixedly connected with the reinforcing bar outer end, and load transducer is equipped between the reinforcing bar and the transmission shaft end；
The input terminal of the acquisition system and displacement sensor, first temperature sensor, the second temperature sensor and should
Load transducer connects, and the output terminal of the acquisition system is connect with the input terminal of the computer system；
The input terminal of the control system is connect with the output terminal of the computer system, the output terminal of the control system and the drive
Dynamic device, the temperature regulating device and water pump connection.
Further, it is hinged between the driving device and the transmission shaft by universal.
Further, the end that the reinforcing bar is located in the casting space is connected with several slanting reinforcing ribs.
Further, it is equipped with insulating layer on the outside of the cope plate, lower template, side template and end template.
Further, the cope plate is detachable.
Further, the driving device is motor.
The test method of concrete tensile strength, is mixed using under the different curing conditions under a kind of difference curing condition
The test equipment of solidifying soil tensile strength, it includes the following steps：
The concrete for stirring completion is poured into the casting space, forms concrete sample；Cope plate is covered, it is pre-buried
The conducting wire of first temperature sensor is pierced by from the preformed hole of cope plate to be connected with acquisition system；
The predetermined temperature of computer system settings concrete sample and the load of loading system, start to test, pass through temperature control
Device makes the water in water tank reach predetermined temperature, and passing through water pump makes water be recycled in the temperature control channel, to the cope plate,
The temperature of lower template, side template and end template is regulated and controled, and the temperature of concrete sample is finally made to reach predetermined temperature T；It is logical
First temperature sensor, second temperature sensor measurement temperature data are crossed, passes through the displacement sensor and becomes figurate number
According to；
After reaching curing age, remove cope plate, lower template, side template and end template, by the pre-buried reinforcing bar of test specimen with
The transmission shaft of loading system is connected, and applies xial feed to reinforcing bar by driving device, until concrete sample is broken, measures examination
The displacement of part and payload data；
The load of confined concrete test specimen and area of section are brought into the tensile strength of formula (1) calculating concrete：
In formula, P (t) is the cracking load of concrete sample；AcIt is effective rupture cross section area of concrete sample.
Further, the course of the predetermined temperature calculates as follows：
For the local situation of experiment, its monthly mean temperature data is fitted to a cosine curve, following formula (2) is fitting
Calculation formula afterwards：
In formula, TaFor temperature, TamFor average temperature of the whole year, AaFor temperature year luffing, τ is the time (moon), τ0For maximum temperature
Time (moon)；
Consider temperature diurnal variation, calculated using following formula (3)：
In formula,For daily temperature, TaFor monthly mean temperature, A is temperature diurnal variation amplitude, at the time of t is in 1 day (when) root
Depending on the Various Seasonal of different regions.
The beneficial effects of the invention are as follows：The test equipment of concrete tensile strength and side under difference curing condition of the invention
Method can precisely assess the concrete cracking risk under different curing conditions, optimize for large volume concrete structural temperature control
Design provides parameter basis.
Description of the drawings
Fig. 1 is the structure diagram of the test equipment of concrete tensile strength under different curing conditions of the invention.
Fig. 2 is the elevational schematic of the test equipment of concrete tensile strength under different curing conditions of the invention.
Fig. 3 is the structure diagram when test equipment of concrete tensile strength under different curing conditions of the invention uses.
Specific embodiment
The possible embodiment aspect of the present invention is only illustrated with embodiment below, however not is intended to protect to limit the present invention
Scope, first give chat it is bright.
As shown in Figure 1-Figure 3, the present invention provides a kind of test equipment of concrete tensile strength under different curing conditions, it
Including template system, temperature system, loading system, acquisition system, control system and computer system.
The template system includes cope plate 1, lower template 2 and two symmetrical side templates 3 with temperature control channel, is formed and cut
The rectangular tubular in face.3 both ends of side template are respectively equipped with the end template 4 with temperature control channel, cope plate 1, the lower template
2nd, the casting space A for forming sealing is enclosed between side template 3 and end template 4.4 center of end template is equipped with circular hole, the circular hole
Interior to be equipped with the reinforcing bar 5 parallel with casting space A length directions, which is located at 4 inside of end template with outside respectively
Portion, in order to increase the contact area of reinforcing bar 5 and concrete, end which is located in casting space A be connected with it is several tiltedly
To reinforcing rib 6.Barrier steel plate 7 is equipped between the top and bottom ends at two 3 middle parts of side template, it is therefore an objective to cut this position
Face weakens, and ensures that concrete sample is broken at the position, improves the success rate of test test specimen fracture.The cope plate 1 is equipped with two
A quartz pushrod 8 is equipped with displacement sensor 9 between 7 both sides of barrier steel plate, two quartz pushrods 8 respectively.As shown in figure 3, this
Invent the displacement control method that uses for：By displacement sensor 9 be fixed on quartz pushrod 8 (its coefficient of thermal expansion is smaller, about 1 μm/
DEG C) one end, using built-in fitting by the end of 8 direct Transducers Embedded in Concrete test specimen 10 of quartz glass bar, quartz pushrod 8 is made to drive displacement
The deformation synchronous with concrete sample 10 of sensor 9, ensures that displacement sensor 9 measures the practical distortion of concrete sample 10, keeps away
Exempt to introduce unnecessary measurement error, and do not limited by 10 aggregate size of concrete sample, measuring method is reasonable.The upper mold
Plate 1, lower template 2, side template 3, end template 4 and casting space A centers are equipped with the first temperature sensor.The cope plate
1 is detachable, and the cope plate 1, lower template 2, side template 3 and 4 outside of end template are equipped with insulating layer.
The temperature system includes the water tank 11 with water pump, which has outlet pipe and return pipe, outlet pipe difference
The water inlet end of the temperature control channel of the cope plate 1, lower template 2, side template 3 and end template 4 is connected to, which connects respectively
To the water outlet of the temperature control channel of the cope plate 1, lower template 2, side template 3 and end template 4.Temperature control is equipped in the water tank 11 to fill
It puts and second temperature sensor.The temperature system of the present invention, computer based control system can be according to the temperature history pair of setting
Temperature regulating device (heating and refrigerating plant) carries out temperature scaling factor：Liquid is sent into water tank, it, will using heating and cooling assembly
Liquid is adjusted to required temperature, and using pressurizing pack (water pump), liquid is input in temperature control channel, makes the temperature of concrete sample
Degree develops according to pre-programmed curve.To ensure that temperature is transmitted uniformly, temperature control channel interior is with journey circulation fluid；PID accurately calculates control
System heating and refrigerating plant ensure fine cold and hot compensation, and control inputs the flow of temperature control channel cycle liquid, makes the temperature of circulation fluid
Degree meets the various requirement of experiment.It is divided into inside template two layers, is water flowing layer with concrete sample contact layer, with air contact site
It is divided into insulating layer, insulating layer may be such that test specimen temperature completely cuts off with the temperature in environmental cabinet, and reduction influences each other, and is easy to temperature control
System.
The loading system includes driving device 12, such as motor, 12 and one transmission shaft 13 of driving device pass through universal hinge
14 connections, can push and pull the transmission shaft 13.14 components of universal hinge are as shown in figure 3, the end of the transmission shaft 13 and the steel
5 outer end of muscle is fixedly connected, and load transducer 15 is equipped between the reinforcing bar 5 and 13 end of transmission shaft.It can ensure as possible in this way
Loading equipemtn applies xial feed to test test specimen.Axle center loading is to ensure that obtaining uniaxial constraint test result accurately ensures.
It is extremely difficult to accomplish 100% axle center, but test equipment of the present invention can reduce the eccentric influence to test result as far as possible.
The input terminal of the acquisition system 16 and displacement sensor 9, first temperature sensor, the second temperature sensor and
The load transducer 15 connects, and the output terminal of the acquisition system 16 is connect with the input terminal of the computer system 17.
The input terminal of the control system 18 is connect with the output terminal of the computer system 17, the output terminal of the control system 18
It is connect with the driving device 12, the temperature regulating device and the water pump.
The present invention also provides a kind of test methods of concrete tensile strength under different curing conditions, utilize the difference
The test equipment of concrete tensile strength under curing condition, it includes the following steps：
The concrete for stirring completion is poured into the casting space A, forms concrete sample 10；Cope plate 1 is covered, in advance
The preformed hole of the conducting wire of the first temperature sensor from cope plate 1 buried is pierced by be connected with acquisition system 16；
Computer system 17 sets the predetermined temperature of concrete sample 10 and the load of loading system, starts to test, pass through
Temperature regulating device makes the water in water tank 11 reach predetermined temperature, and passing through water pump makes water be recycled in the temperature control channel, to described
Cope plate 1, lower template 2, the temperature of side template 3 and end template 4 are regulated and controled, and finally reach the temperature of concrete sample 10
Predetermined temperature T；Temperature data is measured by first temperature sensor, second temperature sensor, passes through the displacement sensing
Device 9 measures deformation data；
After reaching curing age, cope plate 1, lower template 2, side template 3 and end template 4 are removed, by the pre-buried steel of test specimen
Muscle 5 is connected with the transmission shaft of loading system, applies xial feed to the reinforcing bar 5 of concrete sample 10 by driving device, until
Concrete sample 10 is broken, and measures displacement and the payload data of test specimen；
The load of confined concrete test specimen 10 and area of section are brought into the tensile strength of formula (1) calculating concrete：
In formula, P (t) is the cracking load of concrete sample；AcIt is effective rupture cross section area of concrete sample.
The course of the predetermined temperature calculates as follows：
For the local situation of experiment, its monthly mean temperature data is fitted to a cosine curve, following formula (2) is fitting
Calculation formula afterwards：
In formula, TaFor temperature, TamFor average temperature of the whole year, AaFor temperature year luffing, τ is the time (moon), τ0For maximum temperature
Time (moon)；
Consider temperature diurnal variation, calculated using following formula (3)：
In formula,For daily temperature, TaFor monthly mean temperature, A is temperature diurnal variation amplitude, at the time of t is in 1 day (when) root
Depending on the Various Seasonal of different regions.
Advantage of the present invention is as follows：
1st, the present invention can simulate the strength development course of concrete under different curing conditions.By axially loaded, acquisition
The tensile strength of concrete, improves the success rate of experiment, and reference is provided for concrete engineering construction and anticracking.
2nd, the present invention can be required according to the Concrete Temperature Control technology of Practical Project, the different temperature side of input concrete
A variety of concrete curing conditions are simulated on boundary.
3rd, the present invention can apply xial feed to test specimen.
4th, embedded bar end of the invention is connected equipped with reinforcing rib, increases its contact area with concrete；Meanwhile
Reinforcing bar is connect with loading system by universal hinge component, reduces axially loaded eccentricity.
5th, side template of the present invention is equipped with rectangle to casting space midpoint and obstructs steel plate, ensure that concrete sample herein
It is broken at the weakening of section.
6th, the present invention can be according to the concrete tensile strength obtained be tested, to the cracking of concrete under different curing conditions
Behavior evaluation, the Crack Control Design for concrete provide reference.
The present invention is limited with the claim.But based on this, those of ordinary skill in the art can do
Go out various obvious variations or change, it all should be within the main spirits and protection domain of the present invention.
Claims (8)
1. a kind of test equipment of concrete tensile strength under difference curing condition, it is characterised in that：It includes template system, temperature
Degree system, loading system, acquisition system, control system and computer system；
The template system includes cope plate, lower template and two symmetrical side templates with temperature control channel, and Formation cross-section is in square
The tubular of shape；The side template both ends are respectively equipped with the end template with temperature control channel, the cope plate, lower template, side template and
The casting space for forming sealing is enclosed between end template；The end template center is equipped with circular hole, is equipped in the circular hole and is poured with this
The parallel reinforcing bar in space length direction, it is inside and outside which is located at the end template respectively；In the middle part of two side templates
Top and bottom ends between be equipped with barrier steel plate；The cope plate is worn there are two quartz pushrod, respectively positioned at the barrier steel plate both sides,
Displacement sensor is equipped between two quartz pushrods；In the cope plate, lower template, side template, end template and the casting space
The heart is equipped with the first temperature sensor；
The temperature system includes the water tank with water pump, which has outlet pipe and return pipe, which is respectively connected to this
Cope plate, lower template, side template and end template temperature control channel water inlet end, the return pipe be respectively connected to the cope plate,
The water outlet of the temperature control channel of lower template, side template and end template；Temperature regulating device is equipped in the water tank and second temperature senses
Device；
The loading system includes driving device, the driving device and a transmission axis connection, and the transmission shaft can be pushed and pulled；It should
Transmission the tip of the axis is fixedly connected with the reinforcing bar outer end, and load transducer is equipped between the reinforcing bar and the transmission shaft end；
The input terminal of the acquisition system and displacement sensor, first temperature sensor, the second temperature sensor and the load
Sensor connects, and the output terminal of the acquisition system is connect with the input terminal of the computer system；
The input terminal of the control system is connect with the output terminal of the computer system, and the output terminal of the control system is filled with the driving
It puts, the connection of the temperature regulating device and the water pump.
2. the test equipment of concrete tensile strength under difference curing condition according to claim 1, it is characterised in that：Institute
It states and is hinged between driving device and the transmission shaft by universal.
3. the test equipment of concrete tensile strength, feature exist under difference curing condition according to claim 1 or 2
In：The end that the reinforcing bar is located in the casting space is connected with several slanting reinforcing ribs.
4. the test equipment of concrete tensile strength, feature exist under difference curing condition according to claim 1 or 2
In：Insulating layer is equipped on the outside of the cope plate, lower template, side template and end template.
5. the test equipment of concrete tensile strength, feature exist under difference curing condition according to claim 1 or 2
In：The cope plate is detachable.
6. the test equipment of concrete tensile strength, feature exist under difference curing condition according to claim 1 or 2
In：The driving device is motor.
7. a kind of test method of concrete tensile strength under difference curing condition, it is characterised in that：Utilize claim 1 to 6
Any one of described in different curing conditions under concrete tensile strength test equipment, it includes the following steps：
The concrete for stirring completion is poured into the casting space, forms concrete sample；Cover cope plate, pre-buried first
The conducting wire of temperature sensor is pierced by from the preformed hole of cope plate to be connected with acquisition system；
The predetermined temperature of computer system settings concrete sample and the load of loading system, start to test, pass through temperature regulating device
The water in water tank is made to reach predetermined temperature, and passing through water pump makes water be recycled in the temperature control channel, to the cope plate, lower die
The temperature of plate, side template and end template is regulated and controled, and the temperature of concrete sample is finally made to reach predetermined temperature T；Pass through institute
The first temperature sensor, second temperature sensor measurement temperature data are stated, passes through the displacement sensor deformation data；
After reaching curing age, cope plate, lower template, side template and end template are removed, by the pre-buried reinforcing bar of test specimen and loading
The transmission shaft of system is connected, and applies xial feed to reinforcing bar by driving device, until concrete sample is broken, measures test specimen
Displacement and payload data；
The load of confined concrete test specimen and area of section are brought into the tensile strength of formula (1) calculating concrete：
In formula, P (t) is the cracking load of concrete sample；AcIt is effective rupture cross section area of concrete sample.
8. the test method of concrete tensile strength under difference curing condition according to claim 7, it is characterised in that：Institute
The course calculating for stating predetermined temperature is as follows：
For the local situation of experiment, its monthly mean temperature data is fitted to a cosine curve, after following formula (2) is fitting
Calculation formula：
In formula, TaFor temperature, TamFor average temperature of the whole year, AaFor temperature year luffing, τ is the time (moon), τ0Time for maximum temperature
(moon)；
Consider temperature diurnal variation, calculated using following formula (3)：
In formula,For daily temperature, TaFor monthly mean temperature, A is temperature diurnal variation amplitude, at the time of t is in 1 day (when) according to not
Depending on Various Seasonal with area.
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| CN201711390272.7A CN108267365B (en) | 2017-12-21 | 2017-12-21 | Test equipment and method for tensile strength of concrete under different curing conditions |
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| CN201711390272.7A CN108267365B (en) | 2017-12-21 | 2017-12-21 | Test equipment and method for tensile strength of concrete under different curing conditions |
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| CN108267365B CN108267365B (en) | 2020-04-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117705873A (en) * | 2024-02-06 | 2024-03-15 | 三亚华盛水泥粉磨有限公司 | Hydration test system and method for concrete |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008241666A (en) * | 2007-03-29 | 2008-10-09 | High Frequency Heattreat Co Ltd | Chuck device and tensile testing device |
| CN101650283A (en) * | 2009-09-11 | 2010-02-17 | 北京工业大学 | Mould for forming axial tensile-strength test piece of cement-based material and test method |
| CN102305740A (en) * | 2011-08-03 | 2012-01-04 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Detection method of compression strength of concrete structure |
| CN103149094A (en) * | 2013-03-05 | 2013-06-12 | 华北水利水电学院 | Measuring method and device for tensile creep of early-age concrete |
| CN104330305A (en) * | 2014-09-10 | 2015-02-04 | 宁夏大学 | Method for measuring uniaxial tension and elastic modulus of concrete |
| CN105352876A (en) * | 2015-09-09 | 2016-02-24 | 中国水利水电科学研究院 | Real environment-based concrete cracking whole process test apparatus and method |
| CN105424494A (en) * | 2015-09-09 | 2016-03-23 | 中国水利水电科学研究院 | Concrete water cooling overall process testing device and method |
| CN206593969U (en) * | 2017-03-16 | 2017-10-27 | 沈阳工业大学 | The axial tension test device of cement-base composite material test specimen |
-
2017
- 2017-12-21 CN CN201711390272.7A patent/CN108267365B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008241666A (en) * | 2007-03-29 | 2008-10-09 | High Frequency Heattreat Co Ltd | Chuck device and tensile testing device |
| CN101650283A (en) * | 2009-09-11 | 2010-02-17 | 北京工业大学 | Mould for forming axial tensile-strength test piece of cement-based material and test method |
| CN102305740A (en) * | 2011-08-03 | 2012-01-04 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Detection method of compression strength of concrete structure |
| CN103149094A (en) * | 2013-03-05 | 2013-06-12 | 华北水利水电学院 | Measuring method and device for tensile creep of early-age concrete |
| CN104330305A (en) * | 2014-09-10 | 2015-02-04 | 宁夏大学 | Method for measuring uniaxial tension and elastic modulus of concrete |
| CN105352876A (en) * | 2015-09-09 | 2016-02-24 | 中国水利水电科学研究院 | Real environment-based concrete cracking whole process test apparatus and method |
| CN105424494A (en) * | 2015-09-09 | 2016-03-23 | 中国水利水电科学研究院 | Concrete water cooling overall process testing device and method |
| CN206593969U (en) * | 2017-03-16 | 2017-10-27 | 沈阳工业大学 | The axial tension test device of cement-base composite material test specimen |
Non-Patent Citations (2)
| Title |
|---|
| 曹庆峰 等: "混凝土单轴动态受拉试验研究", 《低温建筑技术》 * |
| 赵妍 等: "基于数值流形元法的混凝土力学特性数值试验", 《中国水利水电科学研究院学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117705873A (en) * | 2024-02-06 | 2024-03-15 | 三亚华盛水泥粉磨有限公司 | Hydration test system and method for concrete |
| CN117705873B (en) * | 2024-02-06 | 2024-04-16 | 三亚华盛水泥粉磨有限公司 | Hydration test system and method for concrete |
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| Publication number | Publication date |
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| CN108267365B (en) | 2020-04-03 |
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