CN107102066A - A kind of device and method of indoor ultrasound detection air bubble mix light-textured soil intensity - Google Patents
A kind of device and method of indoor ultrasound detection air bubble mix light-textured soil intensity Download PDFInfo
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- CN107102066A CN107102066A CN201710186895.6A CN201710186895A CN107102066A CN 107102066 A CN107102066 A CN 107102066A CN 201710186895 A CN201710186895 A CN 201710186895A CN 107102066 A CN107102066 A CN 107102066A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/011—Velocity or travel time
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0232—Glass, ceramics, concrete or stone
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02827—Elastic parameters, strength or force
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Abstract
The invention discloses a kind of device and method of indoor ultrasound detection air bubble mix light-textured soil intensity, device includes making bubble tank, blending tank, damping base, flow distribution plate, sample preparation mechanism and peripheral hardware ultrasonic detection equipment etc.；The method of ultrasound detection intensity is first based on rating test, it is 100mm different mixture ratio and the velocity of ultrasonic sound and compression strength value corresponding relation of the cube standard specimen of age to obtain the length of side, the air bubble mix light-textured soil sample of measurement needed for being prepared again in sample preparation mechanism, and corresponding velocity of ultrasonic sound is measured, it is that can obtain the compression strength value of the sample to substitute into strength detection and calculate formula.The present invention integrate rapid prototyping and ultrasound detection, and detection method is Non-Destructive Testing, can quick detection sample in the intensity of different larval instar, shorten the test period, and automaticity height, improve the convenience of strength test.
Description
Technical field
The present invention relates to light soil intensity detection technical field, particularly a kind of quick system of indoor air bubble mix light-textured soil
The method and device of sample and ultrasound detection.
Background technology
At present, the strength test method of air bubble mix light-textured soil is mainly SAMPLE METHOD in laboratory, and SAMPLE METHOD is that interior is poured
The sample of identical match ratio is built, the compression strength of test 28 days after sample solidification.This method is although simple and easy to apply, but due to sample
Condition of molding, curing condition and stress can not to be all fully equivalent to engineering actual, therefore test result is not necessarily accurate,
The intensity of air bubble mix light-textured soil in Practical Project can not be reflected completely, specified conditions bubble mix light-textured soil can only be considered
Performance reflection.In addition, during being open to traffic, the air bubble mix light-textured soil intensity if desired tested on certain section of road foundation,
Then need to drill through light soil test block in the original location and tested, this method can cause certain damage to roadbed.
There is a kind of static pressure coring method (patent No. in engineering construction:ZL 201410183350.6) it is used for testing bubble
Mix light-textured soil intensity.Static pressure core sample method is to have carried out related improvement on original drill core subtraction unit, makes it can be for survey
Try the intensity of embankment different depth air bubble mix light-textured soil.Although the damage very little that this method is caused to roadbed, belong to micro- damage and survey
Examination, but test equipment is heavy, and inconvenience is carried, when being used in Practical Project more have inconvenience.
The lossless detection method of air bubble mix light-textured soil not yet forms the system of system, refers to the Non-Destructive Testing of concrete
Method.The lossless detection method of concrete strength is main following several：
Premised on partly damaged method is the bearing capacity for not influenceing component, fraction-failed test is directly carried out on component, or directly
Connect core boring sampling and carry out destructive testing.Belong to this kind of method has core drilling method, pulling out method, gunning etc..The spy of this kind of method
Point is to obtain concrete strength with focal destructive experiment, thus more intuitive and reliable.Have the disadvantage to cause the part of works to break
It is bad, it need to be repaired, thus should not be used in large area detection.
Based on correlation of the non-damaged method between concrete strength and some physical quantitys, coagulation is not being influenceed during detection
On the premise of any performance of soil, these physical quantitys are tested, the intensity for being detected concrete is then calculated according to dependency relation.Belong to
This kind of method has rebound method, supercritical ultrasonics technology, ultrasonic pulse method, radiation absorption and a scattering method, ripe method etc..These methods
Feature is that test is easy, low-cost, but the reliability of test result is not high, depends primarily on concrete strength and institute's tester
Correlation between reason amount.
The preparation and detection operation of current air bubble mix light-textured soil are separated, i.e., first prepare air bubble mix light-textured soil examination
Sample, is detected by other means again after the demoulding.This conventional preparation and detection mode can only detect the examination being stripped
Sample finished product, most detection methods have all damaged sample, and prepare during sample due to it is most of be manually operated, nothing
Method ensures sample mass so that the accuracy of testing result is relatively low, and takes time and effort, and conventional efficient is low.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of rapid prototyping of indoor collection air bubble mix light-textured soil with surpassing
Device and detection method that sound detection is integrated, solve existing sample preparation and separate progress with detecting, cause take time and effort, noise etc.
Problem, and the big multipair tested sample of detection method have damage, influence the technical problem of testing result accuracy.
The present invention is achieved through the following technical solutions：
A kind of sample preparation device of indoor air bubble mix light-textured soil sample, including a sample preparation mechanism, the sample preparation mechanism include
One base, the relative both sides of base are each provided with a side panel, and two side panels are located at the same side of base, two sides
Multiple dividing plates are arranged at intervals between plate, each dividing plate is both perpendicular to base and two side panels, the bottom of each dividing plate
It is arranged on base, connection is contacted between each dividing plate and two side panels, is formed between dividing plate, base and side panel for holding
Receive the chamber of sample；It is located on base on the outside of dividing plate and is each provided with a support for being used to connect transducer；It is located on base
It is provided with guide rail between two supports, the side panel of guide rail and both sides be arranged in parallel, and one of support can be in the guide rail
Upper to slide, another support is fixedly connected with base；The timer for recording age is provided with one of side panel.
Preferably, the neck for connecting partition is offered on two side panels and base of sample preparation mechanism.
Preferably, the dividing plate is lucite material, and the junction of dividing plate and two side panels and base is pasted with only
Water band.
A kind of sample preparation device of described indoor air bubble mix light-textured soil sample, in addition to split type connection make bubble tank and
Blending tank, makes bubble tank and blending tank is arranged on a bracket by damping base, and sample preparation mechanism is set below bracket；
Make bubble tank top be provided be connected with lid, lid stretch into make bubble tank in make bubble jar agitator, make bubble tank stir
Mix and spherical stirring blade is connected with the agitating shaft of device；It is also equipped with being connected with lid, lid at the top of blending tank and stretches into mixing
Paddle stirring vane is connected with mixing jar agitator in tank, the agitating shaft for mixing jar agitator；Make bubble tank and blending tank
Steam vent is offered on lid；
Make bubble tank and blending tank is connected by pipeline, pump machine is provided with the pipeline, pump machine leads to the foam made in bubble tank
Piping is delivered in blending tank；The discharging opening of blending tank is communicated on flow distribution plate, and flow distribution plate is arranged in sample preparation mechanism, mixing
Material in tank is delivered in sample preparation mechanism through flow distribution plate.
A kind of method of indoor ultrasound detection air bubble mix light-textured soil probe intensity, including：
Step one, the standard specimen of standby multiple different mixture ratios is configured with sampling machine, standard specimen is length, width and height 100mm*
100mm*100mm cube structure, at least stands 24h, the match ratio M=of air bubble mix light-textured soil after standard specimen form removal
mc:mw:vs, wherein M is the match ratio of air bubble mix light-textured soil；mcThe quality of cement for needed for；mwThe quality of water for needed for；vsFor
Required bubble population volume；
Step 2, is detected in batches to the standard specimen of different larval instar, different mixture ratio；During detection, by above-mentioned mark
Quasi- sample is respectively placed in the dress sample chamber of sample preparation mechanism, on two supports that transducer is arranged on to sample preparation mechanism, is being changed
Uniform daubing coupling agent on energy device, slow mobile support is slided on guide rail, until two transducers are by standard specimen clamping, and
Start Ultrasound Instrument main frame afterwards, read the velocity of ultrasonic sound of Ultrasound Instrument, i.e. vkz,j, then use unconfined compression strength test to measure these
The compression strength value of standard specimen, i.e.,
Step 3, repeats the above steps, and finally gives ultrasound of multigroup different mixture ratio standard specimen in different larval instar
Velocity of sound vkz,jAnd compression strength value
Step 4, by multigroup velocity of ultrasonic sound v in step 3kz,jAnd compression strength valueSubstitute into below equation, so that
Determine regression equation regression coefficient a, b, c, d concrete numerical value：
In formula：A, b, c, d are regression equation regression coefficient；vkz,jFor the ultrasound of j-th of air bubble mix light-textured soil sample
The velocity of sound；J is the number of air bubble mix light-textured soil sample, and j is more than or equal to 1；For j-th of air bubble mix light-textured soil standard specimen
Compression strength value；
Step 5, the test specimens to be checked of standby different mixture ratio are configured with sampling machine, and the dimensions of test specimens to be checked is
After 100mm*100mm*100mm, test specimens form removal 24h to be checked, the test specimens to be checked to corresponding age carry out intensity detection；It will treat
Detection sample is positioned in the dress sample chamber of sample preparation mechanism, and the method in step 2 measures velocity of ultrasonic sound vkz,j, this is surpassed
Several fast vkz,jNumerical value, the numerical value of the regression equation regression coefficient obtained in step 4 substitute into the formula of step 4, calculate
The compression strength value of test specimens to be checked is obtained, i.e.,
When physical condition and the laboratory condition gap of standard specimen are larger, the intensity of bioassay standard sample at this moment,
Velocity of ultrasonic sound need to be modified, sequencing is：Advanced trip temperature amendment, then carry out moisture content amendment.Under laboratory condition
The temperature of air bubble mix light-textured soil is 20 ± 2 DEG C, and moisture content is 8%~15%；
Temperature adjustmemt formula is：
Moisture content correction formula is：
Revised strength detection calculates formula：
In above-mentioned formula：fkz,jIt is revised anti-through temperature and moisture content for j-th of air bubble mix light-textured soil standard specimen
Pressure angle value；RTFor temperature correction coefficient；A, B are moisture content correction factor；To carry out the velocity of ultrasonic sound after temperature adjustmemt；To carry out temperature adjustmemt and the revised velocity of ultrasonic sound of moisture content；vkz,jNot carry out temperature adjustmemt and moisture content amendment
Velocity of ultrasonic sound.
A kind of method of indoor ultrasound detection air bubble mix light-textured soil intensity, including step：
Step one, sample preparation；The test specimens to be checked of different mixture ratio are prepared, the dimensions of test specimens to be checked is 100mm*
100mm*100mm, is specifically included：
Step A, the quality of foaming agent and water is calculated according to required bubble population volume and bubble population density, by foaming agent and water
Making bubble in-tank mixing in proportion, make bubble jar agitator by high-speed rotation spherical stirring blade make bubble tank in foamed；
Step B, configures cement and water according to the match ratio of required air bubble mix light-textured soil intensity, cement is being mixed with water
In-tank mixing, mixing jar agitator is mixed by the paddle stirring vane that slowly runs in blending tank；It is pending to finish
Cheng Hou, opens pump machine, and the bubble made in bubble tank is sent into blending tank, then with mixing jar agitator that cement is equal with bubble agitation
It is even；Mixing jar agitator is closed after stirring, the compound obtained in blending tank is transported in sample preparation mechanism, material to be mixed
Fill and start timer after sample preparation chamber；
Step C, during form removal, removes the both sides panel and dividing plate of sample preparation mechanism, takes out sample, sample is at least stood into 24h；
When being ready for ultrasound detection, two pieces of side panels are reinstalled after base, sample is moved at first support；First pause is counted
When device, record timer data be sample age；
Step 2, detection；First the first transducer of ultrasound detection machine is arranged in the first support of sample preparation mechanism, then will
Second transducer is installed on the secondary support bracket；Couplant is spread on two transducers, second support is slowly moved, until second
Transducer, by sample clamping, then starts Ultrasound Instrument main frame, record velocity of ultrasonic sound v with first transducerkz,j, by the velocity of ultrasonic sound
vkz,jNumerical value substitute into formulaIn, calculating obtains fkz,j, i.e., the compression strength value of test specimens to be checked.
The present invention has the advantage that after using above-mentioned technical proposal：
A kind of sample preparation mechanism of this bright described air bubble mix light-textured soil, can realize that sample prepares one with ultrasound detection
Body, timer can record age automatically, and transducer is fixedly mounted on two supports, without hand-held, improves reality
Test precision.
The method of a kind of indoor ultrasound detection air bubble mix light-textured soil probe intensity of the present invention, using anti-without lateral spacing
Compressive Strength tests the compression strength value for measuring standard specimen, then the velocity of ultrasonic sound measured with ultrasound detection and the resistance to compression of standard specimen
Intensity level sets up strength detection and calculates formula, in the intensity detection of other standards sample, only ultrasonic device need to be used to measure super
Several speed, substitute into strength detection and calculate formula, calculate the compression strength value for obtaining the sample.This supersonic detection method is to being surveyed
Sample does not have any damage, and test process is simple and easy to apply.
A kind of device of indoor rapid prototyping and ultrasound detection for integrating air bubble mix light-textured soil of the present invention
And detection method, integrate sample preparation and intensity detection, form removal can carry out intensity detection after completing 24 hours, shorten experiment
Cycle, and automaticity is high, substantially increases the accuracy of experimental data.This method to institute's test specimens without any damage,
Intensity of the sample in different larval instar can be detected.
Brief description of the drawings
Fig. 1 integrates sample preparation and the structural representation of the device of ultrasound detection to be of the present invention.
Fig. 2 is the structural representation of flow distribution plate.
Fig. 3 is the positive structure diagram of sample preparation mechanism.
Fig. 4 is the overlooking the structure diagram of sample preparation mechanism.
Embodiment
As shown in figure 1, a kind of indoor sample preparation for integrating air bubble mix light-textured soil of the present invention and ultrasound detection
Device, including split type connection makes bubble tank 1 and blending tank 2, makes bubble tank 1 and blending tank 2 is connected by pipeline 3, the pipeline
On be provided with pump machine 4, the foam that pump machine will be made in bubble tank passes through in pipeline to blending tank；The discharging opening 5 of blending tank is connected
To flow distribution plate 6, flow distribution plate is arranged in sample preparation mechanism, and the material in blending tank is delivered in sample preparation structure through flow distribution plate.
Make bubble tank top be provided be connected with lid, lid stretch into make bubble tank in making bubble jar agitator 7, make bubble tank stir
Mix and spherical stirring blade 8 is connected with the agitating shaft of device；It is provided with to be connected with lid, lid at the top of blending tank and stretches into blending tank
Paddle stirring vane 10 is connected with interior mixing jar agitator 9, the agitating shaft for mixing jar agitator.
Make bubble tank and mixing pot bottom is arranged on a bracket 12 by damping base 11, being offered on bracket is used for
Material in blending tank discharging opening is delivered to the material channel of flow distribution plate.
Vibrations can be produced by making in bubble tank and the blending tank course of work, blending tank, make bubble tank and the setting of damping base junction
There is rubber blanket, rubber blanket plays a part of fixed tank body and absorbs vibrations for damping.
Graduation mark can also be provided with the tank skin for making bubble tank, bubble tank material will be made and be designed to that water white transparency is moulded
Material, can observe the bubbles volume made and produced in bubble tank.
Steam vent is offered on the lid for making bubble tank and blending tank, for equilibrium air pressure.
There is a groove in the middle of flow distribution plate as shown in Figure 2, groove both sides and centre are provided with through hole, for flowing into slurry
In three sample preparation chambers of sample preparation mechanism.
As shown in Figure 3,4, sample preparation mechanism of the present invention, including a rectangular base 13, base 13 are relative
Both sides are each provided with a rectangular side panel, respectively Left-Hand Panel 19 and right panel 20, Left-Hand Panel 19 and right side
Panel 20 is located at the neck offered on the same side of base 13, Left-Hand Panel 19 and right panel 20 for connecting partition.
Offer the groove for connecting partition on base 13, four grooves correspondences assign four pieces of lucite materials every
Plate, each dividing plate is both perpendicular to base 13 and two side panels, and the bottom of each dividing plate is arranged on base 13, each every
Connection is contacted between plate and two side panels, and the junction of dividing plate and two side panels and base 13 is pasted with waterstop.
It is located on base 13 on the outside of dividing plate and is each provided with a support for being used to connect transducer, respectively first support
17 and second support 18；It is located on base 13 and guide rail 13 is provided between first support 17 and second support 18, guide rail 13 and a left side
Side panel 2 and right panel 3 are be arranged in parallel, and second support 18 can be slided on the guide rail 13, first support 17 and base
13 are fixedly connected.
Be provided with the timer 16 for recording age in right panel, the measurement unit of the timer is day, when,
Point.
In first support and second support inner ring with rubber ring and the bayonet socket of adjustable-tightness degree, for fastening and protecting
Protect transducer.
Base is along long to scale guide rail 15 is installed, and base is fixedly connected, and the fixed position of first support is outside the first groove
Side, guide rail is slidably connected second support 18, first support connection first transducer 14, second support connection second transducer, the
One transducer and second transducer corresponding matching, scale guide rail and first transducer and second transducer corresponding matching；Right flank
Plate is equipped with timer 16；The Ultrasound Instrument main frame being connected with first transducer and second transducer is provided with the outside of mould.
As shown in figure 4, the spacing of every two pieces of dividing plates be able to can not also be waited with equal.Of the present invention a kind of indoor
The strength detection of the method for ultrasound detection air bubble mix light-textured soil probe intensity is calculated in formula, uses length and width a height of
100mm*100mm*100mm standard specimen.But sample preparation mechanism, can also be by carrying out dividing plate when carrying out sample preparation in groove
Assign, change sample length.
A kind of sample preparation of indoor air bubble mix light-textured soil and the method for ultrasound detection, bubble is being made by foaming agent and water in proportion
In-tank mixing, make bubble jar agitator by high-speed rotation make bubble tank in foamed.Wherein, the mixing of required foaming agent and water
Quality=required bubble population density × required bubble population volume, " required bubble population density " is according to specification《CJJT 177-2012 gas
Steep mix light-textured soil reclamation work technical regulation》For 50kg/m3.Cement and water are being mixed into in-tank mixing in proportion, cement and
The ratio of water presses required air bubble mix light-textured soil intensity distribution, and mixing jar agitator is mixed by high-speed rotation in blending tank
Stirring is closed, pump machine is opened, will be made in the bubble feeding blending tank in bubble tank, then with mixing jar agitator by cement and bubble agitation
After uniform, the compound obtained in blending tank is transported in sample preparation mechanism, material to be mixed, which is filled, starts timer after sample preparation chamber.
During form removal, left and right sides panel and dividing plate are removed, sample is taken out, two pieces of side panels is reinstalled on base, sample is moved
To first.During form removal firm due to sample, sample interior moisture content is larger, has certain influence on ultrasound detection, it is necessary to by sample
At least 24 hours are stood, is detected again after most of moisture evaporation in sample.When being detected, first time-out clock, record
Timer data is the age of sample.First transducer is arranged in fixed first support, then second transducer is installed
On the secondary support bracket, couplant is spread, second support is slowly moved, until second transducer and first transducer are by test sample card
Tightly, then start Ultrasound Instrument main frame, read velocity of ultrasonic sound.
Ultrasound measuring instrument is prior art, and existing ultrasound detection machine is used in the present invention, the existing ultrasound inspection
Survey the major function part that there is instrument the present invention such as two transducers, main frames to use.Ultrasound measuring instrument is used in the present embodiment
The nonmetallic ultrasound measuring instruments of ZBL-520 of Beijing Zhi Bolian companies production, the transmitted pulse width of the ultrasound measuring instrument is 0.04ms, is adopted
The sample cycle is 0.40 μ s, and sampling length is 512cm.
The principle that the present invention obtains air bubble mix light-textured soil probe intensity using supersonic detection method includes：Bubble mixing is light
The corresponding match ratio M=m of the different compression strength values of matter soilc:mw:vsIt is different.Wherein M is the match ratio of air bubble mix light-textured soil, mc
The quality (g) of cement, m for needed forwThe quality (g) of water, v for needed forsBubble population volume (mL) for needed for, a kind of match ratio correspondence
A kind of intensity of air bubble mix light-textured soil.In the present embodiment, standard specimen compression strength value is 0.8MPa, corresponding match ratio M
=1:0.6:1.9.
A kind of method of indoor ultrasound detection air bubble mix light-textured soil probe intensity, specific steps include：
Step one, the standard specimen of standby multiple different mixture ratios is configured with sampling machine, standard specimen is length, width and height 100mm*
100mm*100mm cube structure, 24h is at least stood after standard specimen form removal；
Step 2, is detected in batches to the standard specimen of different ages, different mixture ratio., will be above-mentioned during detection
Standard specimen is respectively placed in the dress sample chamber of sample preparation mechanism, on two supports that transducer 14 is arranged on to sample preparation mechanism,
The uniform daubing coupling agent on transducer 14, slow mobile support is slided on guide rail 15, up to two transducers 14 are by standard
Sample clamping, then starts Ultrasound Instrument main frame, reads the velocity of ultrasonic sound of Ultrasound Instrument, i.e. vkz,j, then using unconfined compressive strength
Experiment measures the compression strength value of these standard specimens, i.e.,
Step 3, repeats the above steps, and finally gives ultrasound of multigroup different mixture ratio standard specimen in different larval instar
Velocity of sound vkz,jAnd compression strength value
Step 4, by multigroup velocity of ultrasonic sound v in step 3kz,jAnd compression strength valueSubstitute into below equation, so that
Determine regression equation regression coefficient a, b, c, d concrete numerical value：
Strength detection calculates formula：
In formula：A, b, c, d are regression equation regression coefficient；vkz,jFor the ultrasound of j-th of air bubble mix light-textured soil sample
The velocity of sound；For the compression strength value of j-th of air bubble mix light-textured soil standard specimen；
Due to there are a large amount of bubbles inside air bubble mix light-textured soil, there are very big difference, existing strength detection with concrete
Calculation formula：WithThe error produced when handling experimental data is larger, is not particularly suited for bubble
Mix light-textured soil.Therefore, the present invention is modified on existing formula, and the strength detection that the present invention is set up calculates formula form
For：
The strength detection that the present invention is set up calculates formula error in the compression strength value of bioassay standard sample and can be controlled in
Within 5%.
Step 5, the test specimens to be checked of standby different mixture ratio are configured with sampling machine, and test specimens to be checked are a height of using length and width
Just corresponding age can be treated at any time after 100mm*100mm*100mm standard specimen, test specimens form removal 24h to be checked
Detect that sample carries out intensity detection.Test specimens to be checked are positioned in the dress sample chamber of sample preparation mechanism, the side in step 2
Method measures velocity of ultrasonic sound vkz,j, by velocity of ultrasonic sound vkz,jNumerical value, the numerical value of the regression equation regression coefficient obtained in step 4
In the formula for substituting into step 4, the compression strength value for obtaining sample to be detected is calculated, i.e.,Sample need not be destroyed, by super
Sound detection parameter can be obtained by the compression strength value of sample.
Strength detection calculating formula of the present invention is relevant with the size of sample, and the standard specimen in the present invention is using length
Wide a height of 100mm*100mm*100mm cube structure.Because of the dimensional effect of sample, calculate formula using this strength detection and survey
Also need to accordingly be corrected during the compression strength value for determining other sizes sample.
When the PO42.5 cement produced in the present embodiment using Nanjing Zhong Lian cement plants makes standard specimen, the intensity of foundation
Measure and calculation formula is：
When the conch board PO42.5 cement produced in the present embodiment using Zhenjiang cement plant makes standard specimen, foundation it is strong
Spending measure and calculation formula is：
When physical condition and the laboratory condition gap of standard specimen are larger, the intensity of bioassay standard sample at this moment,
Velocity of ultrasonic sound need to be modified, sequencing is：Advanced trip temperature amendment, then carry out moisture content amendment.Under laboratory condition
The temperature of air bubble mix light-textured soil is 20 ± 2 DEG C, and moisture content is 8%~15%.The physical condition of standard specimen refers to：Work as bubble
When mix light-textured soil standard specimen is in outdoor environment or carries out the different situations such as correlation test, the temperature of standard specimen and contain
Water rate.
Temperature adjustmemt formula is：
Moisture content correction formula is：
Revised strength detection calculates formula：
In above-mentioned formula：fkz,jIt is revised anti-through temperature and moisture content for j-th of air bubble mix light-textured soil standard specimen
Pressure angle value；RTFor temperature correction coefficient；A, B are moisture content correction factor；To carry out the velocity of ultrasonic sound after temperature adjustmemt；To carry out temperature adjustmemt and the revised velocity of ultrasonic sound of moisture content；vkz,jNot carry out temperature adjustmemt and moisture content amendment
Velocity of ultrasonic sound.
Temperature correction coefficient RTSelected according to the temperature range of sample during ultrasound detection, it is as shown in the table, wherein：T
For the temperature of current air bubble mix light-textured soil.Moisture content correction factor A, B concrete numerical value determines by the attribute of cement in itself, can
To be measured by experiment.
The conch board PO42.5 cement that Zhenjiang cement plant is produced in the present embodiment is produced with Nanjing Zhong Lian cement plants
The temperature correction coefficient R of PO42.5 cementT1.00 are taken, then temperature adjustmemt formula is：
Moisture content correction factor A, B of above two cement concrete numerical value are satisfied in the water of standard specimen in the present embodiment
With measured under state.
When air bubble mix light-textured soil standard specimen prepared by the PO42.5 cement produced using Nanjing Zhong Lian cement plants is in
During water saturation state, moisture content correction formula is：
At air bubble mix light-textured soil standard specimen prepared by the conch board PO42.5 cement produced using Zhenjiang cement plant
When water saturation state, moisture content correction formula is：
During the conch board PO42.5 cement that the standard specimen made in the present embodiment is produced using Zhenjiang cement plant, through temperature
Calculating formula with the revised strength detection of moisture content is：
During the PO42.5 cement that the standard specimen made in the present embodiment is produced using Nanjing Zhong Lian cement plants, through temperature and
The revised strength detection of moisture content calculates formula：
The undeclared part being related in the present invention is same as the prior art or is realized using prior art.
Claims (7)
1. a kind of sample preparation device of indoor air bubble mix light-textured soil sample, it is characterised in that：Including a sample preparation mechanism, the sample preparation
Mechanism includes a base (13), and the relative both sides of base (13) are each provided with a side panel, and two side panels are located at base
(13) be arranged at intervals with multiple dividing plates between the same side, two side panels, each dividing plate both perpendicular to base (13) and
Two side panels, the bottom of each dividing plate is arranged on base (13), and connection is contacted between each dividing plate and two side panels, every
The chamber for accommodating sample is formed between plate, base and side panel；It is located on base (13) on the outside of dividing plate and is each provided with one
The individual support for being used to connect transducer (14)；On base (13) guide rail (15), guide rail (15) are provided between two supports
It is be arranged in parallel with the side panel of both sides, and one of support can be slided on the guide rail (15), another support and base
(13) it is fixedly connected；The timer (16) for recording age is provided with one of side panel.
2. a kind of sample preparation device of indoor air bubble mix light-textured soil sample according to claim 1, it is characterised in that：Sample preparation
The neck for connecting partition is offered on two side panels and base (13) of mechanism.
3. a kind of sample preparation device of indoor air bubble mix light-textured soil sample according to claim 1, it is characterised in that：It is described
Dividing plate is lucite material, and the junction of dividing plate and two side panels and base (13) is pasted with waterstop.
4. a kind of sample preparation device of indoor air bubble mix light-textured soil sample according to claim 1, it is characterised in that：Also wrap
Include split type connection makes bubble tank (1) and blending tank (2), makes bubble tank (1) and blending tank (2) is arranged at by damping base (11)
On one bracket (12), sample preparation mechanism is set below bracket (12)；
Make to be provided with to be connected with to stretch into make in bubble tank (1) on lid, lid at the top of bubble tank (1) and make bubble jar agitator (7), make bubble
Spherical stirring blade (8) is connected with the agitating shaft of jar agitator (7)；It is also equipped with connecting on lid, lid at the top of blending tank (2)
It is connected on the mixing jar agitator (9) stretched into blending tank (2), the agitating shaft of mixing jar agitator (9) and is connected with paddle stirring
Blade (10)；Steam vent is offered on the lid for making bubble tank (1) and blending tank (2)；
Make bubble tank (1) and blending tank (2) to connect by pipeline (3), be provided with pump machine (4) on the pipeline (3), pump machine (4) will be made
Foam in bubble tank (1) is delivered in blending tank (2) by pipeline (3)；The discharging opening (5) of blending tank (2) is communicated to flow distribution plate
(6) on, flow distribution plate (6) is arranged in sample preparation mechanism, and the material in blending tank (2) is delivered in sample preparation mechanism through flow distribution plate (6).
5. a kind of method of indoor ultrasound detection air bubble mix light-textured soil probe intensity, it is characterised in that including：
Step one, the standard specimen of standby multiple different mixture ratios is configured with sampling machine, standard specimen is length, width and height 100mm*
100mm*100mm cube structure, at least stands 24h, the match ratio M=of air bubble mix light-textured soil after standard specimen form removal
mc:mw:vs, wherein M is the match ratio of air bubble mix light-textured soil；mcThe quality of cement for needed for；mwThe quality of water for needed for；vsFor
Required bubble population volume；
Step 2, is detected in batches to the standard specimen of different larval instar, different mixture ratio；During detection, above-mentioned standard is tried
Sample is respectively placed in the dress sample chamber of sample preparation mechanism, on two supports that transducer (14) is arranged on to sample preparation mechanism, is being changed
Uniform daubing coupling agent on energy device (14), slow mobile support is slided on guide rail (15), until two transducers (14) will mark
Quasi- sample clamping, then starts Ultrasound Instrument main frame, reads the velocity of ultrasonic sound of Ultrasound Instrument, i.e. vkz,j, then using non-confining strength
Degree experiment measures the compression strength value of these standard specimens, i.e.,
Step 3, repeats the above steps, and finally gives velocity of ultrasonic sound of multigroup different mixture ratio standard specimen in different larval instar
vkz,jAnd compression strength value
Step 4, by multigroup velocity of ultrasonic sound v in step 3kz,jAnd compression strength valueSubstitute into below equation, so that it is determined that
Regression equation regression coefficient a, b, c, d concrete numerical value：
<mrow>
<msubsup>
<mi>f</mi>
<mrow>
<mi>k</mi>
<mi>z</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
<mi>c</mi>
</msubsup>
<mo>=</mo>
<msup>
<mi>ae</mi>
<mrow>
<msub>
<mi>bv</mi>
<mrow>
<mi>k</mi>
<mi>z</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
</msub>
</mrow>
</msup>
<mo>+</mo>
<msub>
<mi>cv</mi>
<mrow>
<mi>k</mi>
<mi>z</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
</msub>
<mo>+</mo>
<mi>d</mi>
</mrow>
In formula：A, b, c, d are regression equation regression coefficient；vkz,jFor the velocity of ultrasonic sound of j-th of air bubble mix light-textured soil sample；j
For the number of air bubble mix light-textured soil sample, j is more than or equal to 1；For the resistance to compression of j-th of air bubble mix light-textured soil standard specimen
Intensity level；
Step 5, the test specimens to be checked of standby different mixture ratio is configured with sampling machine, the dimensions of test specimens to be checked is 100mm*
After 100mm*100mm, test specimens form removal 24h to be checked, the test specimens to be checked to corresponding age carry out intensity detection；By test to be checked
Sample is positioned in the dress sample chamber of sample preparation mechanism, and the method in step 2 measures velocity of ultrasonic sound vkz,j, by the velocity of ultrasonic sound
vkz,jNumerical value, the numerical value of the regression equation regression coefficient obtained in step 4 substitute into the formula of step 4, calculating is treated
The compression strength value of sample is detected, i.e.,
6. a kind of method of indoor ultrasound detection air bubble mix light-textured soil probe intensity according to claim 5, its feature
It is：When physical condition and the laboratory condition gap of standard specimen are larger, the intensity of bioassay standard sample at this moment is needed pair
Velocity of ultrasonic sound is modified, and sequencing is：Advanced trip temperature amendment, then carry out moisture content amendment.Laboratory condition bubble
The temperature of mix light-textured soil is 20 ± 2 DEG C, and moisture content is 8%~15%；
Temperature adjustmemt formula is：
<mrow>
<msubsup>
<mi>v</mi>
<mrow>
<mi>k</mi>
<mi>z</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
<mi>T</mi>
</msubsup>
<mo>=</mo>
<msub>
<mi>R</mi>
<mi>T</mi>
</msub>
<msub>
<mi>v</mi>
<mrow>
<mi>k</mi>
<mi>z</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
</msub>
</mrow>
Moisture content correction formula is：
<mrow>
<msubsup>
<mi>v</mi>
<mrow>
<mi>k</mi>
<mi>z</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
<mrow>
<mi>T</mi>
<mo>,</mo>
<mi>W</mi>
</mrow>
</msubsup>
<mo>=</mo>
<msubsup>
<mi>Av</mi>
<mrow>
<mi>k</mi>
<mi>z</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
<mi>T</mi>
</msubsup>
<mo>+</mo>
<mi>B</mi>
</mrow>
Revised strength detection calculates formula：
<mrow>
<msub>
<mi>f</mi>
<mrow>
<mi>k</mi>
<mi>z</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
</msub>
<mo>=</mo>
<msup>
<mi>ae</mi>
<mrow>
<mi>b</mi>
<mrow>
<mo>(</mo>
<msub>
<mi>AR</mi>
<mi>T</mi>
</msub>
<msub>
<mi>v</mi>
<mrow>
<mi>k</mi>
<mi>z</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
</msub>
<mo>+</mo>
<mi>B</mi>
<mo>)</mo>
</mrow>
</mrow>
</msup>
<mo>+</mo>
<mi>c</mi>
<mrow>
<mo>(</mo>
<msub>
<mi>AR</mi>
<mi>T</mi>
</msub>
<msub>
<mi>v</mi>
<mrow>
<mi>k</mi>
<mi>z</mi>
<mo>,</mo>
<mi>j</mi>
</mrow>
</msub>
<mo>+</mo>
<mi>B</mi>
<mo>)</mo>
</mrow>
<mo>+</mo>
<mi>d</mi>
</mrow>
In above-mentioned formula：fkz,jIt is j-th of air bubble mix light-textured soil standard specimen through temperature and the revised compression strength of moisture content
Value；RTFor temperature correction coefficient；A, B are moisture content correction factor；To carry out the velocity of ultrasonic sound after temperature adjustmemt；To enter
Trip temperature amendment and the revised velocity of ultrasonic sound of moisture content；vkz,jNot carry out the ultrasonic sound of temperature adjustmemt and moisture content amendment
Speed.
7. a kind of method of indoor ultrasound detection air bubble mix light-textured soil intensity, it is characterised in that：Including step：
Step one, sample preparation；The test specimens to be checked of different mixture ratio are prepared, the dimensions of test specimens to be checked is 100mm*100mm*
100mm, is specifically included：
Step A, the quality of foaming agent and water is calculated according to required bubble population volume and bubble population density, by foaming agent and water press than
Example making bubble in-tank mixing, make bubble jar agitator by high-speed rotation spherical stirring blade make bubble tank in foamed；
Step B, cement and water are configured according to the match ratio of required air bubble mix light-textured soil intensity, by cement and water in blending tank
Mixing, mixing jar agitator is mixed by the paddle stirring vane that slowly runs in blending tank；After the completion of to be foamed,
Pump machine is opened, the bubble made in bubble tank is sent into blending tank, then it is with mixing jar agitator that cement is uniform with bubble agitation；Stir
Mix uniform rear close and mix jar agitator, the compound obtained in blending tank is transported in sample preparation mechanism, material to be mixed is filled
Start timer after sample preparation chamber；
Step C, during form removal, removes the both sides panel and dividing plate of sample preparation mechanism, takes out sample, sample is at least stood into 24h；Prepare
When carrying out ultrasound detection, two pieces of side panels are reinstalled after base, sample is moved at first support；First time out
Device, record timer data is the age of sample；
Step 2, detection；First the first transducer of ultrasound detection machine is arranged in the first support of sample preparation mechanism, then by second
Transducer is installed on the secondary support bracket；Couplant is spread on two transducers, second support is slowly moved, until the second transducing
Device, by sample clamping, then starts Ultrasound Instrument main frame, record velocity of ultrasonic sound v with first transducerkz,j, by velocity of ultrasonic sound vkz,j
Numerical value substitute into formulaIn, calculating obtains fkz,j, i.e., the compression strength value of test specimens to be checked.
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| WO2022174480A1 (en) * | 2021-02-22 | 2022-08-25 | 郑州航空工业管理学院 | Fiber nano-concrete structural strength evaluation method and apparatus, and readable medium |
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