CN112557237A - Quick, automatic determination device of sand mud content for building - Google Patents
Quick, automatic determination device of sand mud content for building Download PDFInfo
- Publication number
- CN112557237A CN112557237A CN202011521441.8A CN202011521441A CN112557237A CN 112557237 A CN112557237 A CN 112557237A CN 202011521441 A CN202011521441 A CN 202011521441A CN 112557237 A CN112557237 A CN 112557237A
- Authority
- CN
- China
- Prior art keywords
- mud
- mud content
- shell
- sand
- filtering
- 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.)
- Pending
Links
- 239000004576 sand Substances 0.000 title claims abstract description 39
- 238000001914 filtration Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 238000005303 weighing Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract 5
- 238000011010 flushing procedure Methods 0.000 claims abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- 238000003756 stirring Methods 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 abstract description 37
- 239000004575 stone Substances 0.000 abstract description 22
- 239000000126 substance Substances 0.000 abstract description 16
- 239000004567 concrete Substances 0.000 abstract description 12
- 239000002245 particle Substances 0.000 abstract description 12
- 238000005259 measurement Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 238000007873 sieving Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010561 standard procedure Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011382 roller-compacted concrete Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Ceramic Engineering (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a quick and automatic determination device for mud content of building sand, which comprises a shell, wherein a filtering device for filtering sand is arranged in the shell, a filtering box is arranged below the filtering device and used for receiving a mixture filtered by the filtering device, a flushing device for flushing and filtering the mixture is arranged in the shell, and heating devices and weighing devices are arranged on the filtering device and the filtering box. The invention can divide the powder with the particle size less than 75 μm into the stone powder and the mud powder, calculate the mud content only by taking the weight of the mud powder as the mud-containing substance, and calculate the mud content for the stone powder which can improve the concrete performance without the mud-containing substance, thereby being more in line with the law of the influence factors of the actual concrete performance, realizing the automatic measurement of the mud content and having simple and convenient operation.
Description
Technical Field
The invention relates to the technical field of mechanical automatic detection, in particular to a device for quickly and automatically measuring the mud content of building sand.
Background
At present, the method for testing the mud content mainly comprises the following steps: the mud content is calculated by manually putting sand into water, continuously washing and sieving the sand to obtain mud content smaller than 75 mu m, drying the sand and weighing the components larger than 75 mu m to obtain the sand components. According to an operation method of GB T14685-2011 construction pebble and gravel standard, the calculated mud content of components smaller than 75 mu m as mud-containing substances cannot completely reflect the influence rule of actual concrete performance. The components less than 75 μm in the sand mainly comprise mud powder and stone powder, wherein the mud powder is used as a component for reducing the performance of the concrete, but the stone powder can improve the mortar-sand ratio of roller compacted concrete, obviously improve the grindability and interlayer bonding of the concrete, improve fine gaps among particles in the concrete, form dense stacking and improve the strength of the concrete. Therefore, the influence rule of concrete performance is hardly truly reflected by the mud content calculated by unifying the particle components smaller than 75 μm as mud substances according to the national standard method.
In terms of particle structure, stone powder is as different from mud even if the particle size is as fine as mud to less than 75 μm. The mud absorption additive and water are in a three-dimensional space structure, and the fine stone powder is solid granular sand, and the properties of the mud absorption additive and the water are completely different.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a device for quickly and automatically measuring the mud content of the building sand, which follows the actual situation that the mud content influences the performance of concrete, separates mud powder with the particle size of less than 75 microns from stone powder, and calculates the mud content only by taking the mud powder with the particle size of less than 75 microns as a mud substance, so that the calculated mud content can better accord with the influence rule of powder substances with different components on the performance of the concrete.
In order to solve the above problems, the present invention adopts the following technical solutions.
The utility model provides a quick, the automatic determination device of sand mud content for building, provides an automatic determination device of sand mud content, mainly includes: the device comprises a shell, a 200-mesh screen drum, a filter box, a vibration stirring fan blade, an ultrasonic vibrator, a resistance wire heating dryer, an electromagnetic valve, a cylindrical sliding rod, a weight sensor and the like.
Wherein the shell is a cylindrical box body, and the side wall of the shell is provided with two water inlets and two water outlets; the 200-mesh screen drum and the filter box are cylindrical box bodies and are respectively arranged in the cylindrical shell, the 200-mesh screen drum and the filter box can slide up and down through a central cylindrical slide rod, and the up-and-down movement of the screen drum and the filter box is controlled by a motor in the cylindrical slide rod through a gear rack structure; the outer surface of the resistance wire heating dryer is provided with a water-resisting layer, and the inner part of the resistance wire heating dryer can be quickly dried by matching with an air dryer; the weight sensor is arranged at the lower end in the central cylinder and can respectively measure the weight of the materials contained in the screen cylinder and the filter box.
According to the scheme, the 200-mesh screen cylinder is made of metal, can screen out particles smaller than 75 microns, can slide up and down through the central cylindrical sliding rod, and can measure the weight of substances in the box through the pressure sensor in the central cylindrical sliding rod.
According to the scheme, the filter box is in a metal mesh shape, filter paper is arranged at each mesh, the filter paper can slide up and down through the central cylindrical sliding rod, and the weight of substances in the box can be measured through the pressure sensor in the central cylindrical sliding rod.
According to above-mentioned scheme center cylinder litter is multilayer cavity cylinder pole, and every layer of cylinder pole can slide through inside rack and pinion, and the upper strata is connected with 200 meshes of a section of thick bamboo, and the lower floor is connected with the filter box for 200 meshes of a section of thick bamboo and filter box can slide from top to bottom, and every layer of inside all installs weighing transducer, can survey the weight of a section of thick bamboo, the inside flourishing material of filter box respectively.
According to the scheme, the device has the following working process: 1. the dry sand to be measured is placed in a 200-mesh screen drum, and the total weight of the substances contained in the screen drum and the filter box, namely the weight of the dry sand, is read and recorded as m 1.
According to the scheme, water is fed from the water inlet of the shell, so that the water surface is 5cm higher than the upper side of the sand, the water feeding is stopped, then the vibration stirring fan blades start to rotate, the ultrasonic vibrator starts to work along with the vibration in the rotating process of the fan blades, the agglomerated mud powder and stone powder are vibrated and dispersed, and then the standing is carried out for 5 min.
According to the scheme, the 200-mesh sieve cylinder starts to slide upwards to the position above the water surface, the electromagnetic valve controls the water inlet and the water outlet below the 200-mesh sieve cylinder to start working, water slowly enters the water inlet, the water outlet speed of the water outlet is consistent with the water inlet speed, stable flow is formed, turbid water in the water is continuously discharged until the turbid water is clarified, and the water inlet is stopped.
According to the scheme, the filter box slides upwards to the position above the water surface, the resistance wire heating dryer starts to work outside, so that stone powder on the filter box and sand on the 200-mesh screen drum are quickly dried, and when the weight data obtained by the weight sensors of the filter box and the sand are not changed any more, the drying is finished.
According to the scheme, the material on the 200-mesh screen cylinder is sand, the data of the weight sensor of the material is the weight of the sand, and the reading is recorded as m 2; the material on the filter cartridge was stone dust less than 75 μm, and the weight sensor data was stone dust weight, and the reading was m 3.
According to the scheme, the weight of the mud-containing substances is m1-m2-m3, so the mud content calculation formula is
。
The invention has the advantages of
Compared with the prior art, the invention has the advantages that:
(1) the powder with the particle size less than 75 mu m can be divided into stone powder and mud powder, the mud content is calculated by only taking the weight of the mud powder as a mud-containing substance, and the mud content is calculated by not taking the stone powder capable of improving the concrete performance as the mud-containing substance, so that the rule of the influence factors of the actual concrete performance is better met.
(2) The mud content is automatically measured, and the operation is simple and convenient.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of another view angle of the present invention.
Fig. 3 is a schematic structural view of the present invention with the outer shell removed.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
Referring to fig. 1 to 3, a device for rapidly and automatically measuring the mud content of sand for construction mainly comprises: the device comprises a shell 1, a 200-mesh screen drum 2, a filter box 3, a vibration stirring fan blade 4, an ultrasonic vibrator 5, a resistance wire heating dryer 6, an electromagnetic valve 7, a cylindrical sliding rod 8, a weight sensor and the like;
the shell 1 is a cylindrical box body, and the side wall of the shell is provided with two water inlets and two water outlets;
the 200-mesh screen drum 2 is a cylindrical box body and is respectively arranged in the cylindrical shell 1, and the 200-mesh screen drum 2 can slide up and down through a central cylindrical slide rod 8 and is used for screening powder smaller than 75 mu m into a filter box 3 below;
the filter box 3 is a cylindrical box body and can slide up and down through a central cylindrical slide rod 8, and the filter box has the function of containing stone powder and mud powder which are filtered out from the screen cylinder and are smaller than 75 mu m;
the central cylindrical sliding rod 8 is a multilayer hollow cylindrical rod, each layer of cylindrical rod can slide through an internal gear rack, the upper layer of the central cylindrical rod is connected with the 200-mesh screen drum 2, the lower layer of the central cylindrical rod is connected with the filter box 3, so that the 200-mesh screen drum 2 and the filter box 3 can slide up and down, and a weight sensor is arranged in each layer of the central cylindrical rod and can respectively measure the weight of substances contained in the screen drum and the filter box 3;
the outer surface of the resistance wire heating dryer 6 is provided with a water-resisting layer, and the function is as follows: the interior can be quickly dried by matching with an air dryer;
the following is described with reference to the examples:
the working process is as follows: 1. placing the tested dry sand with the mass of about 500g into a 200-mesh screen drum 2, and reading the total weight of the substances contained in the screen drum and the filter box 3, namely the weight of the dry sand, wherein the weight reading m1=499.4 g; 2. the electromagnetic valve 7 controls the water inlet of the shell 1 to start water inflow, so that the water surface is submerged 5cm above the upper side of the sand and stops water inflow; 3. then vibrating and stirring the fan blades 4 to rotate, and the ultrasonic vibrator 5 starts to work along with the vibration in the rotating process of the fan blades, so that the agglomerated mud powder and stone powder are vibrated and dispersed, and then standing is carried out for 5 min; 4. the central cylindrical sliding rod 8 controls the 200-mesh sieve barrel 2 to start to slide upwards to the position above the water surface, the electromagnetic valve 7 controls a water inlet and a water outlet below the central cylindrical sliding rod to start working, wherein the water inlet slowly feeds water, the water outlet speed of the water outlet is consistent with the water inlet speed, stable flow is formed, turbid water in the water is continuously discharged until the turbid water is clear, and the water feeding is stopped; 5. the central cylindrical sliding rod 8 controls the filter box 3 to slide upwards to the upper part of the water surface, the resistance wire heating dryer 6 starts to work, stone powder on the filter box 3 and sand on the 200-mesh screen drum 2 are rapidly dried, and when the weight data obtained by weight sensors of the stone powder and the sand do not change any more, the drying is proved to be finished; 6. reading data from a weight sensor of 200 mesh screen drum 2, reading m2=493.2 g; 7. reading the data of the weight sensor of the cartridge 3, reading m3=0.21 g; 7. calculated according to the formula, the mud content is 1.12%.
The invention improves the traditional national standard method for measuring the mud content, distinguishes the particle components smaller than 75 mu m, calculates the mud content of stone powder not serving as mud substances, and calculates the water content of the mud powder dissolved in water serving as the mud substances.
The working process is as follows: (1) when sampling on the material pile, the sampling positions should be uniformly distributed. Before sampling, the surface layer of a sampling part is removed, and then 8 parts of sand with approximately equal quantity are randomly extracted from different parts to form a group of samples; (2) sampling quantity: when the mud content is measured, the minimum sampling quantity is 4.4 kg; (3) sample treatment: placing the sample on a flat plate, stirring uniformly in a wet state, stacking into round cakes with a thickness of about 20mm, dividing the round cakes into four parts with equal thickness along two mutually perpendicular diameters, taking two parts of diagonal lines, stirring uniformly again, and stacking into round cakes. The above procedure was repeated until the sample was reduced to the amount required for the test. The sample is reduced to about 500g, is dried in a drying oven at the temperature of 105 +/-5 ℃ to constant volume, and is divided into two parts which are approximately equal after being cooled to room temperature for later use. After the mud content of two samples is measured, the average value is taken as the final mud content measurement value, for the convenience of description, only one sample is measured (4) and weighed, and m1=501.4 g; (5) pouring the samplePutting the sample into a container, and injecting clear water to ensure that the water level is about 150mm higher than the sample surface; (6) vibrating and stirring for 10min to disperse the agglomerated particles into sand, stone powder and mud powder; (7) sieving, namely sieving the sample in the container by using a 200-mesh sieve; (8) drying and weighing sand particles larger than 75% on a screen, wherein the weight m2=495.9 g; (9) washing the residual solution by slow flow until the solution is completely clarified, and filtering out the precipitated stone powder by a filter box 3; (10) weighing the stone powder on the filter paper, wherein the weight of the stone powder is 1.2 g; (11) according to the formula
Calculation was carried out to obtain a sludge content of 0.86%.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (8)
1. The utility model provides a quick, automatic determination device of sand mud content for building, a serial communication port, which comprises an outer shell, be provided with the filter equipment who is used for filtering the grit in the shell, the filter equipment below is provided with the filter cartridge in order to be used for receiving the mixture after the filter equipment filters, be provided with in the shell and be used for washing filterable washing unit to the mixture, all be provided with heating device and weighing device on filter equipment, the filter cartridge.
2. The device for rapidly and automatically measuring the mud content of the building sand as claimed in claim 1, wherein:
the flushing device comprises a water inlet and a water outlet which are arranged on the side wall of the shell, and electromagnetic valves are arranged on the water inlet and the water outlet.
3. The device for rapidly and automatically measuring the mud content of the building sand as claimed in claim 1, wherein:
the filtering device is arranged into a 200-mesh screen drum.
4. The device for rapidly and automatically measuring the mud content of the building sand as claimed in claim 1, wherein:
the heating device is a resistance wire heating dryer.
5. The device for rapidly and automatically measuring the mud content of the building sand as claimed in claim 1, wherein:
the weighing device is set as a weighing sensor.
6. The device for rapidly and automatically measuring the mud content of the building sand as claimed in claim 1, wherein:
and a stirring device for stirring the mixture is arranged in the shell.
7. The device for rapidly and automatically measuring the mud content of the building sand as claimed in claim 6, wherein:
the stirring device comprises a vibration stirring fan blade and/or an ultrasonic vibrator.
8. The device for rapidly and automatically measuring the mud content of the building sand as claimed in claim 1, wherein:
the shell is internally provided with a slide rod which is used for enabling the filtering device and the filtering box to move up and down relative to the shell, and the filtering device and the filtering box are arranged on the slide rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011521441.8A CN112557237A (en) | 2020-12-21 | 2020-12-21 | Quick, automatic determination device of sand mud content for building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011521441.8A CN112557237A (en) | 2020-12-21 | 2020-12-21 | Quick, automatic determination device of sand mud content for building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112557237A true CN112557237A (en) | 2021-03-26 |
Family
ID=75032005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011521441.8A Pending CN112557237A (en) | 2020-12-21 | 2020-12-21 | Quick, automatic determination device of sand mud content for building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112557237A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113884540A (en) * | 2021-06-21 | 2022-01-04 | 中国水利水电科学研究院 | Rapid detection device and detection method for mud content of cemented gravel sand material |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543083A (en) * | 2013-10-16 | 2014-01-29 | 河海大学 | Testing device and evaluation method for static water stability of cohesive soil aggregates |
| CN203635849U (en) * | 2013-12-10 | 2014-06-11 | 彰武县联信铸造硅砂有限公司 | Ultrasonic sand washing device |
| CN104690221A (en) * | 2013-12-10 | 2015-06-10 | 彰武县联信铸造硅砂有限公司 | Ultrasonic sand washing device |
| CN204747404U (en) * | 2015-07-27 | 2015-11-11 | 福建省神悦铸造股份有限公司 | Casting is with ultrasonic wave washed -out sand device |
| CN205175854U (en) * | 2015-12-16 | 2016-04-20 | 钟应林 | Automatic monitoring device of runoff and silt |
| CN106442203A (en) * | 2016-09-29 | 2017-02-22 | 中建西部建设湖南有限公司 | Device and method for testing mud content of concrete sand |
| CN206399755U (en) * | 2016-11-28 | 2017-08-11 | 付希尧 | A kind of portable construction sand silt test experimental provision |
| CN207263514U (en) * | 2017-08-08 | 2018-04-20 | 贵州宏信创达工程检测咨询有限公司 | A kind of sand content in mud measurement device |
| CN108745617A (en) * | 2018-07-04 | 2018-11-06 | 浦馨月 | A kind of aggregate screening processing unit |
| CN109443981A (en) * | 2018-12-13 | 2019-03-08 | 中水北方勘测设计研究有限责任公司 | For quickly measuring the device of sand or stone moisture content |
| CN209577322U (en) * | 2018-12-14 | 2019-11-05 | 河南华索科技有限公司 | The online powdered carbon grain size analysis measuring device of ultrasonic screening structure and its composition |
| CN209613507U (en) * | 2019-01-25 | 2019-11-12 | 广西建设职业技术学院 | A kind of automatic weighing pulp classifier |
| CN209858374U (en) * | 2019-05-06 | 2019-12-27 | 甘肃省水利水电工程局有限责任公司 | Quick survey device of mountain flour content in artifical grit aggregate |
| CN111351730A (en) * | 2020-03-18 | 2020-06-30 | 扬州市职业大学(扬州市广播电视大学) | Device and method for measuring water absorption of recycled coarse aggregate for concrete |
| CN111474329A (en) * | 2020-04-16 | 2020-07-31 | 深圳市港嘉工程检测有限公司 | Aggregate mud content and mud cake content test system |
| CN211553643U (en) * | 2019-08-21 | 2020-09-22 | 杭州东方雨虹建筑材料有限公司 | River sand mud content measuring device |
| CN212031212U (en) * | 2020-04-28 | 2020-11-27 | 中铁二局第一工程有限公司 | Automatic test device for concrete aggregate mud content and mud block content |
-
2020
- 2020-12-21 CN CN202011521441.8A patent/CN112557237A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543083A (en) * | 2013-10-16 | 2014-01-29 | 河海大学 | Testing device and evaluation method for static water stability of cohesive soil aggregates |
| CN203635849U (en) * | 2013-12-10 | 2014-06-11 | 彰武县联信铸造硅砂有限公司 | Ultrasonic sand washing device |
| CN104690221A (en) * | 2013-12-10 | 2015-06-10 | 彰武县联信铸造硅砂有限公司 | Ultrasonic sand washing device |
| CN204747404U (en) * | 2015-07-27 | 2015-11-11 | 福建省神悦铸造股份有限公司 | Casting is with ultrasonic wave washed -out sand device |
| CN205175854U (en) * | 2015-12-16 | 2016-04-20 | 钟应林 | Automatic monitoring device of runoff and silt |
| CN106442203A (en) * | 2016-09-29 | 2017-02-22 | 中建西部建设湖南有限公司 | Device and method for testing mud content of concrete sand |
| CN206399755U (en) * | 2016-11-28 | 2017-08-11 | 付希尧 | A kind of portable construction sand silt test experimental provision |
| CN207263514U (en) * | 2017-08-08 | 2018-04-20 | 贵州宏信创达工程检测咨询有限公司 | A kind of sand content in mud measurement device |
| CN108745617A (en) * | 2018-07-04 | 2018-11-06 | 浦馨月 | A kind of aggregate screening processing unit |
| CN109443981A (en) * | 2018-12-13 | 2019-03-08 | 中水北方勘测设计研究有限责任公司 | For quickly measuring the device of sand or stone moisture content |
| CN209577322U (en) * | 2018-12-14 | 2019-11-05 | 河南华索科技有限公司 | The online powdered carbon grain size analysis measuring device of ultrasonic screening structure and its composition |
| CN209613507U (en) * | 2019-01-25 | 2019-11-12 | 广西建设职业技术学院 | A kind of automatic weighing pulp classifier |
| CN209858374U (en) * | 2019-05-06 | 2019-12-27 | 甘肃省水利水电工程局有限责任公司 | Quick survey device of mountain flour content in artifical grit aggregate |
| CN211553643U (en) * | 2019-08-21 | 2020-09-22 | 杭州东方雨虹建筑材料有限公司 | River sand mud content measuring device |
| CN111351730A (en) * | 2020-03-18 | 2020-06-30 | 扬州市职业大学(扬州市广播电视大学) | Device and method for measuring water absorption of recycled coarse aggregate for concrete |
| CN111474329A (en) * | 2020-04-16 | 2020-07-31 | 深圳市港嘉工程检测有限公司 | Aggregate mud content and mud cake content test system |
| CN212031212U (en) * | 2020-04-28 | 2020-11-27 | 中铁二局第一工程有限公司 | Automatic test device for concrete aggregate mud content and mud block content |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113884540A (en) * | 2021-06-21 | 2022-01-04 | 中国水利水电科学研究院 | Rapid detection device and detection method for mud content of cemented gravel sand material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108303056B (en) | The test method of aggregate surface slurry maximum wrapping layer thickness in pervious concrete | |
| Radocea | A model of plastic shrinkage | |
| CN112557237A (en) | Quick, automatic determination device of sand mud content for building | |
| CN101573176B (en) | Compositions of particles | |
| Khachan et al. | The efficacy and use of small centrifuge for evaluating geotextile tube dewatering performance | |
| CN107525734B (en) | System and method for measuring water content and mud content of sand and stone | |
| CN110672494A (en) | Method for rapidly measuring different porosities of porous concrete | |
| CN205982278U (en) | Automatic control system for detecting concrete parameters | |
| CN112697636A (en) | Rapid and accurate determination method for mud content of sand for building | |
| CA1042229A (en) | Leaf filter test method for determining filtration characteristics of a fibrous slurry and apparatus for performance thereof | |
| CN207946286U (en) | A kind of experimental provision for measuring seepage inflow erosion | |
| CN114166691B (en) | Method and device for testing rheological property of cementing material | |
| CN107817275A (en) | Concrete disintegration detection means and method | |
| CN210487441U (en) | Sand detection device for concrete | |
| CN209570477U (en) | A kind of sandstone clay content rapid determination device | |
| CN203772622U (en) | Device for artificially preparing structured intact soft clay test soil sample | |
| CN107631971A (en) | A kind of saturating sand coefficient rapid assay methods of vegetation form cellular concrete and device | |
| JPS6041728B2 (en) | Aggregate measuring method, kneading water amount determining method, and devices thereof | |
| JP2014163759A (en) | Soil sedimentation analytic method | |
| CN106715094A (en) | Assembly and use of a geometrically compact powder layer | |
| CN207248674U (en) | A kind of sandstone is aqueous, the measuring system of clay content | |
| CN110129014A (en) | A kind of nano-micro level drilling fluid pressure-bearing sealing agent and its evaluation method | |
| Hughes et al. | A laboratory test for determining the angularity of aggregate | |
| Padovnik et al. | Efficiency of field test methods for evaluation of non-structural injection grouts in Slovenian conservation practice | |
| CN114944205B (en) | Concrete mixing proportion optimization method |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210326 |