CN107727652A - A kind of method of cement content after turbidimetry for Determination MJS is reinforced - Google Patents
A kind of method of cement content after turbidimetry for Determination MJS is reinforced Download PDFInfo
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- CN107727652A CN107727652A CN201710894985.0A CN201710894985A CN107727652A CN 107727652 A CN107727652 A CN 107727652A CN 201710894985 A CN201710894985 A CN 201710894985A CN 107727652 A CN107727652 A CN 107727652A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/82—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a precipitate or turbidity
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Abstract
The method of cement content, the described method comprises the following steps after being reinforced the invention discloses a kind of turbidimetry for Determination MJS：1st step, with scene take undisturbed soil to be tested, drafting cement content examination criteria curve；The cement content for soil sample of being fetched water after 2nd step, measure MJS reinforcings；Wherein, the standard curve is the relation curve of cement content and turbidity.(1) the method for the invention can detect the cement content of specified location in MJS reinforcing scopes, accurate judgement jet groutinl effect, to instruct construction in later period to provide foundation；(2) the method for the invention testing result is exported by machine, simple and efficient, and accuracy is high.
Description
Technical field
The invention belongs to detection field after constructing, and is related to a kind of MJS reinforced efficiency tests method, is specially a kind of injection note
The method that turbidimetry for Determination cement content is utilized after slurry.
Background technology
MJS engineering methods because of its excellent consolidation effect and to surrounding environment influence it is small the features such as just more and more be applied to ground
The engineerings such as iron construction, foundation ditch strengthening.But due to the disguise that MJS is reinforced, the effect after construction can not be observed directly so that into
Stake effect is difficult to reflect.The method of soil cement consolidation effect is examined to be divided into physics and chemical method, wherein thing in engineering at present
Reason method mainly has geologic radar detection method, bore extracting core process, Cone Penetration Test in situ, resistivity method etc., and these methods are to instrument
Device requires high, and implementation cost is high.Chemical method is mainly titration, and wherein EDETATE SODIUM titration is most widely used, but
Titration end-point is judged by operator, is easily caused human error.
Turbidimetry determines suspended sediment concentration by the luminous intensity measured through particle in suspension medium, is currently used primarily in doctor
And bio-science field, building subject is smaller because being associated with the two fields, and shorter mention passes through the micro member of optical measurement
The test method of element, so rarely having appearance in field of civil engineering, wherein not having application also in cement content context of detection.
The content of the invention
The technical problem of solution：The defects of in order to overcome prior art, obtain a kind of MJS for being applied to judge specified location
Consolidation effect, and testing result is exported by machine, simple and efficient, the high detection method of accuracy, the invention provides a kind of ratio
The method of cement content after turbid method measure MJS is reinforced.
Technical scheme：The method of cement content, the described method comprises the following steps after a kind of turbidimetry for Determination MJS is reinforced：
1st step, with scene take undisturbed soil to be tested, drafting cement content examination criteria curve；
The cement content for soil sample of being fetched water after 2nd step, measure MJS reinforcings；
Wherein, the standard curve is the relation curve of cement content and turbidity.
Preferably, it is described to draw comprising the following steps that for cement content examination criteria curve：
(1) undisturbed soil and the sample of cement grout 6 concentration gradients of making are taken with scene, dries and grind after the completion of maintenance
Grinds；
(2) take powder in step (1) to add pure water to stir, take upper suspension to be put into centrifuge after standing and centrifuge；
(3) solution after step (2) centrifugation is taken, 0.05g~0.10g ammonium oxalate powder and fully shaking are added, with than turbid
Instrument determines turbidity, after the completion of 6 Specimen Determinations, draws the relation curve of cement content and turbidity.
Preferably, the equation of linear regression of the cement content examination criteria curve is：Y=5357.9x+384.99.
Preferably, the cement content detection range of step (1) reclaimed water soil sample is 4.5%~18.1%.
Preferably, it is described to determine concretely comprising the following steps for sample cement content：
(1) sample to be tested in MJS reinforcing scopes is taken, is pulverized after drying；
(2) take powder in step (1) to add pure water to stir, take upper suspension to be put into centrifuge after standing and centrifuge；
(3) solution after step (2) centrifugation is taken, adds ammonium oxalate powder and fully shaking, turbidity, root are determined with than turbid instrument
Sample cement content is calculated according to cement content examination criteria curve.
Beneficial effect：(1) the method for the invention can detect the cement content of specified location in MJS reinforcing scopes, accurate
Really jet groutinl effect is judged, to instruct construction in later period to provide foundation；(2) the method for the invention testing result is defeated by machine
Go out, simple and efficient, accuracy is high.
Brief description of the drawings
Fig. 1 is the cement content examination criteria curve map of embodiment 1；
Fig. 2 is the cement content examination criteria curve map of embodiment 2.
Embodiment
Following examples further illustrate present disclosure, but should not be construed as limiting the invention.Without departing substantially from
In the case of spirit and essence of the invention, the modification and replacement made to the inventive method, step or condition, the present invention is belonged to
Scope.Unless otherwise specified, the conventional meanses that technological means used in embodiment is well known to those skilled in the art.
Embodiment 1
The method of cement content, the described method comprises the following steps after a kind of turbidimetry for Determination MJS is reinforced：
1st step, with scene take undisturbed soil to be tested, drafting cement content examination criteria curve；
The cement content for soil sample of being fetched water after 2nd step, measure MJS reinforcings；
Wherein, the standard curve is the relation curve of cement content and turbidity.
It is described to draw comprising the following steps that for cement content examination criteria curve：
(1) the cement soil sample for undisturbed soil and cement mortar 6 concentration gradients of making taken out with scene, respectively 4.5%,
8.2%th, 10.3%, 13.9%, 16.1%, 18.1%；The meaning of wherein cement content is：Cement quality/undisturbed soil and cement
Gross mass, original state soil property amount is 50g in each sample, and the ratio of mud of cement mortar is 1:1.2, cement mortar mixes after preparing with soil sample
Close.Sample proportioning is as shown in table 1：
The sample of table 1 matches table
(2) age is determined at maintenance to scene, and cement soil sample is put into baking oven and dried completely, is pulverized after taking-up.
(3) weigh powder in 20g steps (2) to be put into beaker, add 150mL pure water, stir 5min using mixer, stand
15min, draw supernatant liquor 40mL and be placed in centrifuge tube, be put into centrifuge and centrifuge.
(4) the solution 30mL after step (3) centrifugation is taken, adds 0.1g ammonium oxalate powder and fully shaking, is surveyed with than turbid instrument
Determine turbidity.3 turbidity of same sample are averaged, and after the completion of all Specimen Determinations, draw the pass of cement content and turbidity
It is curve.As shown in figure 1, cement content is linearly related to turbidity, its linearly dependent coefficient is 0.9839.
The equation of linear regression of the cement content examination criteria curve is：Y=5357.9x+384.99.
The measure sample cement content concretely comprises the following steps：
(1) MJS construction post-reinforcing area diverse location each 50g of cement soil sample to be measured are taken, is put into baking oven and dries completely, take
Pulverized after going out；
(2) weigh powder in 20g steps (1) to be put into beaker, add 150mL pure water, stir 5min using mixer, stand
15min, take supernatant liquor 40mL and centrifuge；
(3) the solution 30mL after step (2) centrifugation is taken, adds 0.1g ammonium oxalate powder and fully shaking, is surveyed with than turbid instrument
Determine turbidity, sample cement content is calculated according to cement content examination criteria curve.
Embodiment 2
No. three line civil engineering D3-TA09 of Line of Nanjing Subway marks include big temporary dwelling palace station~Chang Fu streets station section and Chang Fu streets station~
The section of Confucius Temple station section two, two shield machines of this engineering successively originate from Confucius Temple station the North, and Chang Fu streets station shield receives, mistake
Chang Fu streets station is secondary to be originated, and in the big temporary dwelling palace station south, shield well receives.In order to ensure that the construction safety of shield reception and construction are suitable
Profit is carried out, and carries out MJS reinforcings to reaching termination.Materialsed cement content is detected using turbidimetry, so as to judge to spray
Slip casting effect, it the described method comprises the following steps：
(1) the cement soil sample of undisturbed soil and cement mortar 6 concentration gradients of making is taken with scene, respectively 4.5%,
8.2%th, 10.3%, 13.9%, 16.1%, 18.1%；The meaning of wherein cement content is：Cement quality/undisturbed soil and cement
Gross mass, original state soil property amount is 50g in each sample, and the ratio of mud of cement mortar is 1:1.2, cement mortar mixes after preparing with soil sample
Close.Sample proportioning is as shown in table 2：
The sample of table 2 matches table
(2) age is determined at maintenance to scene, and cement soil sample is put into baking oven and dried completely, is pulverized after taking-up.
(3) weigh powder in 20g steps (2) to be put into beaker, add 150mL pure water, stir 5min using mixer, stand
15min, draw supernatant liquor 40mL and be placed in centrifuge tube, be put into centrifuge and centrifuge.
(4) the solution 30mL after step (3) centrifugation is taken, adds 0.1g ammonium oxalate powder and fully shaking, is surveyed with than turbid instrument
Determine turbidity.3 turbidity of same sample are averaged, and after the completion of all Specimen Determinations, draw the pass of cement content and turbidity
It is curve.As shown in figure 1, cement content is linearly related to turbidity, its linearly dependent coefficient is 0.9781.
The measure sample cement content concretely comprises the following steps：
(1) MJS construction post-reinforcing area diverse location each 50g of cement soil sample to be measured are taken, is put into baking oven and dries completely, take
Pulverized after going out；
(2) weigh powder in 20g steps (1) to be put into beaker, add 150mL pure water, stir 5min using mixer, stand
15min, take supernatant liquor 40mL and centrifuge；
(3) the solution 30mL after step (2) centrifugation is taken, adds 0.1g ammonium oxalate powder and fully shaking, is surveyed with than turbid instrument
Determine turbidity, sample cement content is calculated according to cement content examination criteria curve.
Claims (6)
1. a kind of method of cement content after turbidimetry for Determination MJS is reinforced, it is characterised in that the described method comprises the following steps：
1st step, with scene take undisturbed soil to be tested, drafting cement content examination criteria curve；
The cement content for soil sample of being fetched water after 2nd step, measure MJS reinforcings；
Wherein, the standard curve is the relation curve of cement content and turbidity.
The method of cement content after 2. a kind of turbidimetry for Determination MJS according to claim 1 is reinforced, it is characterised in that institute
State and draw comprising the following steps that for cement content examination criteria curve：
(1) undisturbed soil and the sample of cement grout 6 concentration gradients of making are taken with scene, dries and be ground into after the completion of maintenance
Powder；
(2) take powder in step (1) to add pure water to stir, take upper suspension to be put into centrifuge after standing and centrifuge；
(3) solution after step (2) centrifugation is taken, adds ammonium oxalate powder and fully shaking, turbidity, 6 examinations are determined with than turbid instrument
After the completion of sample measure, the relation curve of cement content and turbidity is drawn.
The method of cement content after 3. a kind of turbidimetry for Determination MJS according to claim 2 is reinforced, it is characterised in that institute
It is 0.05g~0.10g to state ammonium oxalate amount ranges.
The method of cement content after 4. a kind of turbidimetry for Determination MJS according to claim 2 is reinforced, it is characterised in that institute
The equation of linear regression for stating cement content examination criteria curve is：Y=5357.9x+384.99.
The method of cement content after 5. a kind of turbidimetry for Determination MJS according to claim 2 is reinforced, it is characterised in that step
Suddenly
(1) the cement content detection range of reclaimed water soil sample is 4.5%~18.1%.
The method of cement content after 6. a kind of turbidimetry for Determination MJS according to claim 1 is reinforced, it is characterised in that institute
State concretely comprising the following steps for measure sample cement content：
(1) sample to be tested in MJS reinforcing scopes is taken, is pulverized after drying；
(2) take powder in step (1) to add pure water to stir, take upper suspension to be put into centrifuge after standing and centrifuge；
(3) solution after step (2) centrifugation is taken, adds ammonium oxalate powder and fully shaking, turbidity is determined with than turbid instrument, according to water
Cement content examination criteria curve calculates sample cement content.
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Citations (5)
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| CN101982770A (en) * | 2010-11-15 | 2011-03-02 | 河海大学 | Method for detecting cement dosage in core test sample of cement mixing pile |
| CN102735575A (en) * | 2012-07-10 | 2012-10-17 | 河海大学 | Method for rapidly and simply measuring cement content of cement soil |
| CN103063802A (en) * | 2012-12-31 | 2013-04-24 | 清华大学 | Potentiometric titration determination method of cemented sand gravel cement content |
| CN104634692A (en) * | 2014-09-17 | 2015-05-20 | 四川鑫统领建材科技有限公司 | Method for determining cement content of building mortar |
| CN104634690A (en) * | 2014-09-17 | 2015-05-20 | 四川鑫统领建材科技有限公司 | Method for determining cement content of building mortar |
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2017
- 2017-09-28 CN CN201710894985.0A patent/CN107727652B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982770A (en) * | 2010-11-15 | 2011-03-02 | 河海大学 | Method for detecting cement dosage in core test sample of cement mixing pile |
| CN102735575A (en) * | 2012-07-10 | 2012-10-17 | 河海大学 | Method for rapidly and simply measuring cement content of cement soil |
| CN103063802A (en) * | 2012-12-31 | 2013-04-24 | 清华大学 | Potentiometric titration determination method of cemented sand gravel cement content |
| CN104634692A (en) * | 2014-09-17 | 2015-05-20 | 四川鑫统领建材科技有限公司 | Method for determining cement content of building mortar |
| CN104634690A (en) * | 2014-09-17 | 2015-05-20 | 四川鑫统领建材科技有限公司 | Method for determining cement content of building mortar |
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| 刘金惠 等: "光电比浊法测定钙离子的分析方法研究", 《理化检验-化学分册》 * |
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Application publication date: 20180223 Assignee: Jiangsu Rong Rui Construction Technology Co.,Ltd. Assignor: NANJING FORESTRY University Contract record no.: X2020320000079 Denomination of invention: A turbidimetric method for determination of cement content after MJS reinforcement Granted publication date: 20191203 License type: Common License Record date: 20200925 |
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Application publication date: 20180223 Assignee: HUADONG CONSTRUCTION CO., LTD. OF CHINA RAILWAY NO.3 ENGINEERING GROUP Co.,Ltd. Assignor: NANJING FORESTRY University Contract record no.: X2020320000089 Denomination of invention: A turbidimetric method for determination of cement content after MJS reinforcement Granted publication date: 20191203 License type: Common License Record date: 20201012 |
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