CN111735787A - Test method for rapidly measuring mud content in machine-made sand - Google Patents
Test method for rapidly measuring mud content in machine-made sand Download PDFInfo
- Publication number
- CN111735787A CN111735787A CN202010659713.4A CN202010659713A CN111735787A CN 111735787 A CN111735787 A CN 111735787A CN 202010659713 A CN202010659713 A CN 202010659713A CN 111735787 A CN111735787 A CN 111735787A
- Authority
- CN
- China
- Prior art keywords
- methylene blue
- test
- sample
- solution
- concentration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/3103—Atomic absorption analysis
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention belongs to the technical field of material performance detection, and discloses a test method for rapidly determining mud content in machine-made sand, which aims to solve the problems in the method for determining harmful clay in fine aggregate in the prior art. The method can effectively distinguish the types of the clay, estimate the content of the contained clay components, judge whether the clay components can be safely used for concrete production according to the size of the fine aggregate MBV, and further reasonably utilize the mechanism sand polluted by the clay.
Description
Technical Field
The invention relates to the technical field of material performance detection, in particular to a test method for rapidly determining the mud content in machine-made sand.
Background
The fine aggregate is an important constituent material in concrete, and the fine aggregate used in concrete in the past is mainly natural sand. With the successive implementation of environmental protection policies in various regions, some regions even appear
There is no sand available, so machine-made sand has been imperative to replace natural sand. However, the mechanical sand is often mixed with harmful clay components during mining, transportation and storage, because the harmful clay has high adsorptivity and undergoes volume expansion after water is adsorbed, thereby seriously affecting the workability of the concrete and even endangering the durability of the concrete. The industry has many methods for testing clay minerals in fine aggregates, and the currently widely adopted methods mainly comprise a Sand Equivalent (SE) method and a Methylene Blue (MB) method.
The sand equivalent method has no obvious effect on distinguishing the stone powder from the clay components, and in addition, the sand equivalent test cannot effectively distinguish the expansive clay mineral (montmorillonite) from the non-expansive clay mineral (kaolinite). The methylene blue method is better in correlation with the clay mineral content in the fine aggregate, but the methylene blue testing method given in the specification is excessively complicated in operation, time-consuming and limited in application range, the titration end point of the methylene blue method is judged by observing whether halos appear on filter paper, fig. 2 shows the experimental result of an experimenter after testing by using the methylene blue, and it can be seen from the figure that halos appear in 35ml, 40ml and 45ml, but the titration end point is determined to be 45ml, so that the artificial error is large. Therefore, finding a method for rapidly determining the existence of harmful clay in the fine aggregate becomes the key of quality control of the fine aggregate.
Disclosure of Invention
The invention aims to solve the problems existing in the method for measuring harmful clay in fine aggregate in the prior art, and provides a test method for rapidly measuring the mud content in machine-made sand, which is simple in test and small in error.
In order to achieve the purpose, the invention adopts the following technical scheme:
a test method for rapidly measuring the mud content in machine-made sand comprises the following steps:
1) preparing and crushing a dried machine-made sand sample, then sieving the fine aggregate by a 4.75mm sieve and putting the processed sample into a sealing bag for later use;
2) weighing 20g of a sample to be detected, weighing 30mL of methylene blue solution with the mass concentration of 0.5%, adding the methylene blue solution and the methylene blue solution into a test tube, and mixing;
3) sucking 1-2ml of upper liquid and filtering into a clean test tube;
4) transferring 130 mu L of the filtrate obtained in the step 3) and pouring the filtrate into a test tube with scales, and diluting the filtrate with water to 45mL and uniformly mixing the filtrate;
5) placing a cuvette filled with a standard methylene blue solution with the mass concentration of 0.5% into a sample groove of a colorimeter, and clearing the absorbance of the reference solution by using the colorimeter and selecting a corresponding test mode;
6) then, filling the solution to be detected in the step 4) into a cuvette and putting the cuvette into a sample groove of a colorimeter, and detecting the MBV value of the sample, wherein the unit is mg/L, and if the detected MBV is less than 7mg/g, the MBV is effective;
7) if the MBV measured in the step 6) is more than 7mg/g, the 20g sample consists of 10g of machine-made sand sample to be measured and 10g of standard sand together, and then the test is carried out according to the steps 2) to 6), and if the MBV measured in the step 6) is more than 14mg/g, the 20g sample consists of 5g of machine-made sand sample to be measured and 15g of standard sand together, and then the test is carried out according to the steps 2) to 6).
Further, in the step 2), the concentration of the initial methylene blue solution is corrected by using a colorimeter, whether the mass concentration of the initial methylene blue solution is 0.5% or not is determined, and the determination steps are as follows:
a) transferring 130 mu L of initial methylene blue solution, pouring the initial methylene blue solution into a test tube with scales, diluting the initial methylene blue solution to 45mL by using water, and uniformly mixing;
b) selecting a corresponding test mode on the colorimeter, inserting a cuvette filled with water into the sample groove, covering the cuvette groove with an instrument cover, and zeroing by pressing a zeroing key;
c) replacing the cuvette in the sample tank in the step b) with a cuvette containing the methylene blue reference solution in the step a) and testing, wherein if the colorimeter shows that the reading is 14.44ppm, the concentration of the initial methylene blue solution is indicated to be 0.5%;
mass concentration C of the initial methylene blue solution before dilution in step a)initial-actualObtained by the following equation:
in the formula: cmethod106-concentration value, ppm, for the colorimeter 610Abs 610nm mode test;
Cinitial-actual-starting methylene blue solution concentration, mg/g;
d) if the initial methylene blue solution concentration is not 0.5%, the methylene blue test value is corrected using the following formula:
in the formula: MBVcorrected-modified methylene blue value, mg/g;
Cinitial-theoreticaltheoretical methylene blue solution concentration, 0.5%;
MBVmeasured-methylene blue value, mg/g, obtained by testing with the wrong methylene blue concentration.
Further, in step 3), 1-2ml of the upper layer liquid is sucked up by a syringe, the syringe needle is taken down, a filter membrane is arranged at the tip of the syringe, and the mixed liquid is filtered into a clean test tube.
Further, 130. mu.L of the filtered filtrate was removed by a micropipette in step 4) and poured into a graduated tube.
Further, after the liquids in step 4) are mixed, timing is started by using a stopwatch, the plastic test tube filled with the mixed liquid is shaken for 1min, then the mixture is stood for 3min, then the plastic test tube filled with the mixed liquid is shaken again for 1min, and the mixing time of the sample and the methylene blue solution is 5min in total.
Further, the colorimeter in the step 5) selects a 001 test mode, and the 001 test mode has the following formula:
in the formula: c0The mass concentration of the methylene blue standard solution is 5 g/L;
c is methylene blue concentration of the solution to be tested for absorbance test, mg/L;
m is the mass of a sample to be detected, and 20g is obtained;
30-volume of standard solution of methylene blue used in the test, mL;
130-micropipette aspirate filtrate volume, μ L;
45-volume of diluted filtrate, mL;
MBV-methylene blue value, which represents the mass of methylene blue adsorbed per kilogram of sample, mg/g.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a test method for rapidly measuring the mud content in machine-made sand, which comprises the steps of testing the absorbance of a methylene blue solution adsorbed by clay by using a colorimeter, establishing the relation between the absorbance and the concentration of the methylene blue solution adsorbed by the clay, and finally converting the change of the concentration of the methylene blue solution into MBV. The test method only needs 10min for testing one sample, provides a method for rapidly determining the existence of harmful clay minerals in the fine aggregate for laboratory and engineering field tests, has obvious correlation between the expansive clay content and the MBV, and shows that the test method for rapidly determining the mud content in the machine-made sand is the most effective and rapid method for identifying the clay minerals in the aggregate. The method can effectively distinguish the types of the clay, estimate the content of the contained clay components, judge whether the clay components can be safely used for concrete production according to the size of the fine aggregate MBV, and further reasonably utilize the mechanism sand polluted by the clay.
Drawings
FIG. 1 is a standard curve of absorbance of methylene blue solution;
FIG. 2 is a schematic representation of a methylene blue test of the prior art;
FIG. 3 is a flow chart of methylene blue testing based on sample size variation;
FIG. 4 is a graph comparing the results of the present invention and conventional test methods;
FIG. 5 is a graph showing the relationship between clay type and content and MBV.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Experimental materials:
methylene blue (C)16H18N3SCI) solution with mass concentration of 0.5%, drinking water, machine-made sand sample, 4.75mm collecting sieve, analytical balance, micropipette and colorimeter.
An additional device: two plastic test tubes with scales of 45ml, 5ml plastic test tubes, 10ml syringes, 0.2 μm filter membranes, a weighing plate, two pipettes, a micropipette tip, a stopwatch and disposable latex gloves.
Example 1:
before the experiment, the concentration of the initial methylene blue solution is corrected by a colorimeter, whether the mass concentration of the initial methylene blue solution is 0.5% or not is determined, and the determination steps are as follows:
a) mu.L of the initial methylene blue solution was pipetted and poured into a graduated tube and the solution diluted to 45mL with water and mixed well.
b) The 002 test mode is selected on the colorimeter, then a cuvette filled with water is inserted into the sample groove, the cover of the colorimeter is covered, and the zero setting is carried out by pressing a zero setting key.
Note: the 002 test mode was set according to the following test:
firstly, a standard curve is drawn up
Firstly, preparing a methylene blue solution with the mass fraction of 5%, and diluting the prepared methylene blue solution to obtain standard solutions with different methylene blue concentrations of 0, 1.5mg/l, 3mg/l, 4.5mg/l, 6mg/l, 7.5mg/l and 9mg/l respectively. Then, the absorbance values of the different concentrations of methylene blue solution of each group at 610nm are measured by a colorimeter, the test results are shown in table 1, and finally, the fitting of a standard curve is carried out, and the fitting results are shown in fig. 1:
TABLE 1 Absorbance at 610nm of different concentrations of methylene blue solution
Setting a 002 test mode in a colorimeter according to a relation between the absorbance and the concentration of the methylene blue solution established in the test.
c) The cuvette in the sample holder was replaced by a cuvette containing the methylene blue reference solution of step a) and tested, indicating an initial methylene blue solution concentration of 0.5% if the colorimeter showed a reading of 14.44 ppm.
Mass concentration C of the initial methylene blue solution before dilution in step a)initial-actualObtained by the following equation:
in the formula: cmethod106-concentration value, ppm, for the colorimeter 610Abs 610nm mode test;
Cinitial-actualinitial methylene blue solution concentration, mg/g.
d) If the initial methylene blue solution concentration is not 0.5%, the methylene blue test value is corrected using the following formula:
in the formula: MBVcorrected-modified methylene blue value, mg/g;
Cinitial-theoreticaltheoretical methylene blue solution concentration, 0.5%;
MBVmeasured-testing the obtained methylene blue value with the wrong methylene blue concentration.
During the experiment:
1) a200 g sample of dried machine-made sand is prepared and the agglomerated fines in the aggregate are ground up using a mortar or rubber pestle or any other method without destroying the aggregate particles.
The fine aggregate was then screened through a 4.75mm screen and the treated sample placed in a sealed bag for use.
2) Adjusting an analytical balance, weighing 20g of a sample to be detected, measuring 30mL of methylene blue solution with the mass concentration of 0.5% by using a plastic test tube with the scale specification of 50mL, adding the methylene blue solution and the plastic test tube into the test tube, mixing, screwing a test tube cover, starting timing by using a stopwatch, shaking the plastic test tube filled with the mixed solution for 1min, standing for 3min, then shaking the plastic test tube filled with the mixed solution for 1min again, and mixing the sample and the methylene blue solution for 5 min.
3) The plastic tube cap containing the mixture was opened, 1-2ml of the supernatant liquid was aspirated by a syringe, the syringe needle was removed, and a filter membrane was attached to the tip of the syringe to filter the mixture into a clean 5ml tube.
4) Remove 130 μ L of filtered filtrate with a micropipette and pour into a clean plastic tube with a scale of 50mL, and mix the test solution evenly by gently shaking the tube to dilute the solution to 45mL with water.
5) And taking down the cover of the colorimeter device, opening the power supply of the colorimeter, and selecting a 001 test mode. (a mode which is set in a colorimeter by itself according to the relation between the absorbance established by the test and the concentration of the methylene blue solution adsorbed by the clay). The formula for the 001 test mode is as follows:
in the formula: c0The mass concentration of the methylene blue standard solution is 5 g/L;
c is methylene blue concentration of the solution to be tested for absorbance test, mg/L;
m is the mass of a sample to be detected, and 20g is obtained;
30-volume of standard solution of methylene blue used in the test, mL;
130-micropipette aspirate filtrate volume, μ L;
45-volume of diluted filtrate, mL;
MBV-methylene blue value, which represents the mass of methylene blue adsorbed per kilogram of sample, mg/g.
And then placing the cuvette filled with the standard methylene blue solution with the mass concentration of 0.5% into a sample groove of the colorimeter, covering the cuvette cover, and then resetting the absorbance of the reference solution according to a reset key.
6) And then filling the solution to be tested in the step 4) into a cuvette and putting the cuvette into a sample groove of a colorimeter, and testing to obtain the MBV of the sample to be 4.235 mg/g. The MBV is less than 7mg/g, and is effective MBV.
Example 2:
experimental procedures (1) - (5) were the same as those in example 1(1) - (5).
6) And then filling the solution to be tested in the step 4) into a cuvette and putting the cuvette into a sample groove of a colorimeter, and testing to obtain the MBV of the sample to be 7.635 mg/g.
7) The measured MBV is more than 7mg/g, the weighed 20g sample consists of 10g machine-made sand sample to be measured and 10g standard sand, and is mixed with 30g methylene blue solution with the mass concentration of 0.5 percent, and then the test is carried out according to the steps 3) to 6), and the MBV of the obtained sample is 8.367mg/g, the value is less than 14mg/g, and the obtained sample is effective MBV.
Example 3:
experimental procedures (1) - (5) were the same as those in example 1(1) - (5).
6) And then filling the solution to be tested in the step 4) into a cuvette and putting the cuvette into a sample groove of a colorimeter, and testing to obtain the MBV of the sample to be 13.356 mg/g.
7) Since the measured MBV is more than 7mg/g, the weighed 20g sample consists of 10g of machine-made sand sample to be measured and 10g of standard sand, and is mixed with 30g of methylene blue solution with the mass concentration of 0.5 percent, and then the test is carried out according to the steps 3) to 6), and the MBV of the finally obtained sample is 14.257 mg/g.
8) At this time, the measured MBV is more than 14mg/g, and a weighed 20g sample is composed of 5g of a machine-made sand sample to be measured and 15g of standard sand, and is mixed with 30g of a methylene blue solution with a mass concentration of 0.5%, and then the test is performed according to steps 3) to 6). The MBV of the final sample was 15.473 mg/g.
Comparative example:
in FIG. 2, a conventional methylene blue process is used. And the same samples are divided into five groups A-E, and the optimized methylene blue is adopted for testing and comparison, and the test results are shown in a table 2 and a figure 3. It can be known from the figure that the test result of the optimized methylene blue method is linear with the conventional method, and the fitting degree is 0.995.
Table 2 results of the conventional methylene blue method and the optimized methylene blue method.
Laterite and sodium montmorillonite with different percentage contents are respectively added into clean standard sand, 14 groups of sand samples to be tested are counted, and the 14 groups of sand samples to be tested are tested by a test method for rapidly determining the mud content in machine-made sand, and the detailed contents are shown in table 3. Fig. 5 is a relationship diagram of the clay type and content of the fine aggregate and the MBV, from which it can be known that the MBV obtained by the test method for rapidly determining the mud content in the machine-made sand has an obvious correlation with the clay content, and it is proved that the larger the MBV is, the higher the clay content in the corresponding fine aggregate is. The MBV of the two types of fine aggregates is greatly different even if the clay content of the fine aggregates containing different types of clay is the same, and the test method for rapidly determining the mud content in the machine-made sand can effectively distinguish the types of the clay and judge the expansive clay mineral (montmorillonite) and the non-expansive clay mineral (kaolinite).
The method comprises the steps of testing the absorbance of a methylene blue solution adsorbed by clay by using a colorimeter, establishing a relation between the absorbance and the concentration of the methylene blue solution adsorbed by the clay, and finally converting the change of the concentration of the methylene blue solution into MBV.
Table 3 results of clay type and content testing by the testing method for rapidly determining the content of mud in machine-made sand.
Claims (6)
1. A test method for rapidly measuring the mud content in machine-made sand is characterized by comprising the following steps:
1) preparing and crushing a dried machine-made sand sample, then sieving the fine aggregate by a 4.75mm sieve and putting the processed sample into a sealing bag for later use;
2) weighing 20g of a sample to be detected, weighing 30mL of methylene blue solution with the mass concentration of 0.5%, adding the methylene blue solution and the methylene blue solution into a test tube, and mixing;
3) sucking 1-2ml of upper liquid and filtering into a clean test tube;
4) transferring 130 mu L of the filtrate obtained in the step 3) and pouring the filtrate into a test tube with scales, and diluting the filtrate with water to 45mL and uniformly mixing the filtrate;
5) placing a cuvette filled with a standard methylene blue solution with the mass concentration of 0.5% into a sample groove of a colorimeter, and clearing the absorbance of the reference solution by using the colorimeter and selecting a corresponding test mode;
6) then, filling the solution to be detected in the step 4) into a cuvette and putting the cuvette into a sample groove of a colorimeter, and detecting the MBV value of the sample, wherein the unit is mg/L, and if the detected MBV is less than 7mg/g, the MBV is effective;
7) if the MBV measured in the step 6) is more than 7mg/g, the 20g sample consists of 10g of machine-made sand sample to be measured and 10g of standard sand together, and then the test is carried out according to the steps 2) to 6), and if the MBV measured in the step 6) is more than 14mg/g, the 20g sample consists of 5g of machine-made sand sample to be measured and 15g of standard sand together, and then the test is carried out according to the steps 2) to 6).
2. The test method for rapidly determining the mud content in the machine-made sand as claimed in claim 1, wherein the test method comprises the following steps: in the step 2), the concentration of the initial methylene blue solution is corrected by using a colorimeter, whether the mass concentration of the initial methylene blue solution is 0.5% or not is determined, and the determination steps are as follows:
a) transferring 130 mu L of initial methylene blue solution, pouring the initial methylene blue solution into a test tube with scales, diluting the initial methylene blue solution to 45mL by using water, and uniformly mixing;
b) selecting a corresponding test mode on the colorimeter, inserting a cuvette filled with water into the sample groove, covering the cuvette groove with an instrument cover, and zeroing by pressing a zeroing key;
c) replacing the cuvette in the sample tank in the step b) with a cuvette containing the methylene blue reference solution in the step a) and testing, wherein if the colorimeter shows that the reading is 14.44ppm, the concentration of the initial methylene blue solution is indicated to be 0.5%;
mass concentration C of the initial methylene blue solution before dilution in step a)initial-actualObtained by the following equation:
in the formula: cmethod106-concentration value, ppm, for the colorimeter 610Abs 610nm mode test;
Cinitial-actual-starting methylene blue solution concentration, mg/g;
d) if the initial methylene blue solution concentration is not 0.5%, the methylene blue test value is corrected using the following formula:
in the formula: MBVcorrected-modified methylene blue value, mg/g;
Cinitial-theoreticaltheoretical methylene blue solution concentration, 0.5%;
MBVmeasured-methylene blue value, mg/g, obtained by testing with the wrong methylene blue concentration.
3. The test method for rapidly determining the mud content in the machine-made sand as claimed in claim 1, wherein the test method comprises the following steps: and 3) sucking 1-2ml of upper layer liquid by using a syringe, taking down the needle of the syringe, installing a filter membrane at the tip of the syringe, and filtering the mixed solution into a clean test tube.
4. The test method for rapidly determining the mud content in the machine-made sand as claimed in claim 1, wherein the test method comprises the following steps: and 4) removing 130 mu L of filtered filtrate by using a micropipette in the step 4) and pouring the filtrate into a test tube with scales.
5. The test method for rapidly determining the mud content in the machine-made sand as claimed in claim 1, wherein the test method comprises the following steps: and 4) after the liquids in the step 4) are mixed, timing by using a stopwatch, simultaneously shaking the plastic test tube filled with the mixed liquid for 1min, standing for 3min, then shaking the plastic test tube filled with the mixed liquid for 1min again, and mixing the sample and the methylene blue solution for 5min in total.
6. The test method for rapidly determining the mud content in the machine-made sand as claimed in claim 1, wherein the test method comprises the following steps: the colorimeter in the step 5) selects a 001 test mode, and the 001 test mode has the following formula:
in the formula: c0The mass concentration of the methylene blue standard solution is 5 g/L;
c is methylene blue concentration of the solution to be tested for absorbance test, mg/L;
m is the mass of a sample to be detected, and 20g is obtained;
30-volume of standard solution of methylene blue used in the test, mL;
130-micropipette aspirate filtrate volume, μ L;
45-volume of diluted filtrate, mL;
MBV-methylene blue value, which represents the mass of methylene blue adsorbed per kilogram of sample, mg/g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010659713.4A CN111735787B (en) | 2020-07-09 | 2020-07-09 | Test method for rapidly determining mud content in machine-made sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010659713.4A CN111735787B (en) | 2020-07-09 | 2020-07-09 | Test method for rapidly determining mud content in machine-made sand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111735787A true CN111735787A (en) | 2020-10-02 |
| CN111735787B CN111735787B (en) | 2023-06-02 |
Family
ID=72655959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010659713.4A Active CN111735787B (en) | 2020-07-09 | 2020-07-09 | Test method for rapidly determining mud content in machine-made sand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111735787B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198302A (en) * | 2020-10-25 | 2021-01-08 | 中铁二局第一工程有限公司 | Rapid detection method and measuring tool for mud content of fine aggregate |
| CN112461767A (en) * | 2020-11-17 | 2021-03-09 | 中建商品混凝土有限公司 | Automatic high-precision MB value rapid detection device and use method thereof |
| CN112485152A (en) * | 2020-12-11 | 2021-03-12 | 山东交通学院 | Method for judging river sand quality |
| CN112946170A (en) * | 2020-12-23 | 2021-06-11 | 中山艾尚智同信息科技有限公司 | Method for measuring mud content of machine-made sand for building |
| CN113552119A (en) * | 2021-07-20 | 2021-10-26 | 广东华路交通科技有限公司 | Fine aggregate methylene blue value testing method |
| CN113848185A (en) * | 2021-09-30 | 2021-12-28 | 中建西部建设建材科学研究院有限公司 | Sand MB value testing system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606793A (en) * | 2016-03-07 | 2016-05-25 | 长沙理工大学 | Fine aggregate soil-water characteristic curve estimation method based on methylene blue value |
| CN105651718A (en) * | 2016-03-07 | 2016-06-08 | 长沙理工大学 | Method for rapidly determining methylene blue value of fine aggregate based on colorimeter |
| CN108645747A (en) * | 2018-06-15 | 2018-10-12 | 中国建筑科学研究院有限公司 | Method for measuring adsorption performance of machine-made sandstone powder |
| CN109187381A (en) * | 2018-08-01 | 2019-01-11 | 中建西部建设西南有限公司 | A kind of method of quick measurement Machine-made Sand MB value |
| KR102099458B1 (en) * | 2019-08-12 | 2020-04-10 | 현대엔지니어링 주식회사 | Measurement method for clay content contained in fine aggregate |
-
2020
- 2020-07-09 CN CN202010659713.4A patent/CN111735787B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606793A (en) * | 2016-03-07 | 2016-05-25 | 长沙理工大学 | Fine aggregate soil-water characteristic curve estimation method based on methylene blue value |
| CN105651718A (en) * | 2016-03-07 | 2016-06-08 | 长沙理工大学 | Method for rapidly determining methylene blue value of fine aggregate based on colorimeter |
| CN108645747A (en) * | 2018-06-15 | 2018-10-12 | 中国建筑科学研究院有限公司 | Method for measuring adsorption performance of machine-made sandstone powder |
| CN109187381A (en) * | 2018-08-01 | 2019-01-11 | 中建西部建设西南有限公司 | A kind of method of quick measurement Machine-made Sand MB value |
| KR102099458B1 (en) * | 2019-08-12 | 2020-04-10 | 현대엔지니어링 주식회사 | Measurement method for clay content contained in fine aggregate |
Non-Patent Citations (3)
| Title |
|---|
| 余苗等: "沥青混合料粉料的亚甲蓝试验方法研究", 《中外公路》 * |
| 邵静等: "沥青混合料细集料砂当量及亚甲蓝指标研究", 《公路交通科技(应用技术版)》 * |
| 韩博: ""细集料关键技术指标对水泥混凝土耐久性影响的研究"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112198302A (en) * | 2020-10-25 | 2021-01-08 | 中铁二局第一工程有限公司 | Rapid detection method and measuring tool for mud content of fine aggregate |
| CN112198302B (en) * | 2020-10-25 | 2022-12-16 | 中铁二局第一工程有限公司 | Method and measuring tool for rapidly detecting mud content of fine aggregate |
| CN112461767A (en) * | 2020-11-17 | 2021-03-09 | 中建商品混凝土有限公司 | Automatic high-precision MB value rapid detection device and use method thereof |
| CN112485152A (en) * | 2020-12-11 | 2021-03-12 | 山东交通学院 | Method for judging river sand quality |
| CN112946170A (en) * | 2020-12-23 | 2021-06-11 | 中山艾尚智同信息科技有限公司 | Method for measuring mud content of machine-made sand for building |
| CN113552119A (en) * | 2021-07-20 | 2021-10-26 | 广东华路交通科技有限公司 | Fine aggregate methylene blue value testing method |
| CN113848185A (en) * | 2021-09-30 | 2021-12-28 | 中建西部建设建材科学研究院有限公司 | Sand MB value testing system and method |
| CN113848185B (en) * | 2021-09-30 | 2024-03-01 | 中建西部建设建材科学研究院有限公司 | Sand MB value test system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111735787B (en) | 2023-06-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111735787A (en) | Test method for rapidly measuring mud content in machine-made sand | |
| Bloom et al. | Selective extractions to assess the biogeochemically relevant fractionation of inorganic mercury in sediments and soils | |
| Huang et al. | Distribution of heavy metals in the water column, suspended particulate matters and the sediment under hydrodynamic conditions using an annular flume | |
| EP2167952B1 (en) | Determination of slurry concentration | |
| JP5199782B2 (en) | Quality evaluation method of fly ash | |
| CN107281780A (en) | Solid-phase extraction column and detection method for detecting pesticide residue from tea | |
| US4196614A (en) | Process and device for quantitative analysis of cement and water content in fresh concrete | |
| CN111307737B (en) | Test method for measuring adsorption characteristic of high liquid limit soil to heavy metal ions | |
| Driscoll et al. | Comparison of 1-D and 2-D tests in geotextile dewatering applications | |
| JP3614568B2 (en) | Soil analysis method | |
| Sunil et al. | Soil-leachate interaction and their effects on hydraulic conductivity and compaction characteristics | |
| CN103344534A (en) | Novel full-component granularity analysis method for siltstone particles | |
| CN209525169U (en) | A kind of marine monitoring sediment sample pretreatment auxiliary device | |
| CN106596476A (en) | Waste drilling fluid solid-liquid separation assessment method | |
| CN111735732A (en) | Method for testing copper content of plastic particles of dry copper rice mill | |
| JP4011069B2 (en) | Test method of bentonite content in bentonite mixed soil | |
| US20040209373A1 (en) | Method and apparatus for the determination of water in materials | |
| WO2003046550A1 (en) | Method and apparatus for the determination of water in cement | |
| CN110296971A (en) | The methods and applications of reductive derivazation resonance rayleigh light scattering method measurement nitrite | |
| CN110258654B (en) | Preparation method of landfill gasket material | |
| CN114486606B (en) | Method for measuring oil content | |
| Sagagi et al. | Comparison of two non-specific flow-through sequential extraction approaches to identify the physico-chemical partitioning of potentially harmful elements in a certified reference material | |
| Schneiter et al. | A carbon adsorption isotherm test for volatile organic chemicals in water | |
| CN109238815B (en) | Pretreatment method for oil content in carbon residue for detection | |
| JP4139787B2 (en) | Test method of bentonite content in bentonite mixed soil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |