CN112198302B - Method and measuring tool for rapidly detecting mud content of fine aggregate - Google Patents
Method and measuring tool for rapidly detecting mud content of fine aggregate Download PDFInfo
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- CN112198302B CN112198302B CN202011151305.4A CN202011151305A CN112198302B CN 112198302 B CN112198302 B CN 112198302B CN 202011151305 A CN202011151305 A CN 202011151305A CN 112198302 B CN112198302 B CN 112198302B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000002689 soil Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000011049 filling Methods 0.000 claims description 6
- 238000005189 flocculation Methods 0.000 claims description 4
- 230000016615 flocculation Effects 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 230000001376 precipitating effect Effects 0.000 claims description 3
- 239000012716 precipitator Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 4
- 230000001934 delay Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention provides a method for rapidly detecting mud content of fine aggregate and a measuring tool, wherein samples with mud content of all levels are prepared, different mud contents corresponding to different flocculent soil volumes are obtained, a mud content corresponding statistical table is prepared, the volume corresponding to the mud content of 0.1% level is calculated by an interpolation method, when the method is used, the fine aggregate is randomly extracted on site, the flocculent soil volume is measured according to the steps (2) to (7), and the mud content of the corresponding fine aggregate is found out on the mud content corresponding statistical table by using the measured volume. The method solves the problems that the existing detection method is long in period and poor in timeliness, is easy to use before being detected in a mixing station production peak, buries hidden dangers in concrete entity quality, or easily causes that suppliers and manufacturers push withered skins to tear over to delay material clearing time, occupies limited storage bin space, seriously delays concrete production progress and the like due to the fact that the materials are unloaded and stacked when unqualified materials are encountered. Belongs to the field of building engineering.
Description
Technical Field
The invention relates to a method and a tool for rapidly detecting the mud content of fine aggregates, belonging to the field of constructional engineering.
Background
The fine aggregate (sand for construction) is the main component of concrete, and the mud content is one of the main indexes of fine aggregate quality control. The excessive mud content of the fine aggregate can cause the water demand of the concrete to be increased, the working performance to be deteriorated, the plasticity retention to be deteriorated, the shrinkage to be increased, the slump loss to be large, the strength and the durability of the concrete to be reduced, and the structure to be easy to have cracks, cracks and other hazards. When fine aggregates enter a mixing station, a material collector roughly inspects the appearance of the fine aggregates, then unloads the fine aggregates and stacks the fine aggregates, then testers sample the fine aggregates in batches and in a formula amount, and the fine aggregates are detected by adopting the methods of manual drying, soaking, elutriation, screening and drying according to the requirements of relevant industrial specifications such as GB14684-2011 'building sand' or JTGE42-2005 'road engineering aggregate test regulations'. The method has the advantages that the detection period is long, the timeliness is poor, the judgment result of the mud content data of the fine aggregate cannot be detected in time, the fine aggregate is easy to use before being detected in the production peak of a mixing station, hidden danger is buried in the concrete entity quality, or the dead materials are unloaded and stacked when the unqualified materials are met, the withered material tearing delay time of suppliers and manufacturers is easy to cause, the limited storage bin space is occupied, and the concrete production progress is seriously delayed.
Disclosure of Invention
The invention provides a method and a tool for rapidly detecting the mud content of fine aggregates, which aim to solve the problems that the existing detection method is long in period and poor in timeliness, is easy to use before being detected in a mixing station production peak, buries hidden dangers in concrete entity quality, or easily causes the problems that suppliers and manufacturers push withered materials to tear skins to delay material clearing time, occupies limited storage bin space, seriously delays the concrete production progress and the like due to the fact that the materials are unloaded and stacked when unqualified materials are encountered.
In order to realize the purpose, the method for rapidly detecting the mud content of the fine aggregate is specifically as follows:
(1) a plurality of air-dried samples with different mud contents are prepared indoors according to the increasing of 0.5 percent of mud content to 5 percent; (2) taking a sample, tamping the sample in three layers, filling the sample into a constant volume cylinder, and scraping the sample along the top opening of the constant volume cylinder; (3) slowly adding clean water to the top opening of the container and the level of the container, and fully filling the fine aggregate gaps with water; (4) pouring all the water and the sample in the constant volume cylinder into a measuring cylinder, adding clean water to 500ml, and adding a measuring cylinder plug to seal the measuring cylinder; (5) reversing the measuring cylinder back and forth for a plurality of times to fully mix the soil and the water in the sample; (6) placing the measuring cylinder on a horizontal table, dripping diluted polyacrylamide flocculation precipitator, properly stirring muddy water by using a glass tamper, standing, and quickly precipitating flocculated soil; (7) recording the graduated cylinder scale V1 of the boundary between the sample particles and the flocculent soil and the graduated cylinder scale V2 of the top of the flocculent soil, and calculating the volume V of the flocculent soil; (8) measuring prepared samples with mud content of each level according to the method to obtain different mud contents corresponding to different volumes of flocculent soil, making a mud content corresponding statistical table, and calculating the volume corresponding to the mud content of 0.1% level by using an interpolation method; (9) randomly drawing fine aggregates on site, and measuring the volume of the flocculent soil according to the steps (2) to (7); and checking the mud content of fine aggregate in the statistical table of mud content.
The invention also comprises a container for rapidly detecting the mud content of the fine aggregate, wherein the inner diameter of the container 1 is 70mm, the inner height is 90mm, the wall thickness is 10mm, and the container is made of stainless steel.
Compared with the prior art, the method and the device can detect the mud content of the fine aggregate in a short time, a collector can detect the mud content of the fine aggregate before a transport vehicle unloads the fine aggregate, unqualified materials can be cleared and rejected in time, the construction and production of concrete are ensured, the misjudgment caused by the traditional visual method and experience feeling is avoided, the result can be obtained by only three steps in field detection, and the detection personnel can easily and quickly master the method; is small and portable and is not limited by places.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings, and it should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.
Examples
Referring to fig. 1, this embodiment provides a method for rapidly detecting a mud content of a fine aggregate, which includes:
(1) a plurality of air-dried samples with different mud contents are prepared indoors according to the increasing of 0.5 percent of mud content to 5 percent; (2) taking a sample, tamping the sample in three layers, filling the sample into a constant volume cylinder 1, wherein the inner diameter of the constant volume cylinder 1 is 70mm, the inner height of the constant volume cylinder 1 is 90mm, the wall thickness of the constant volume cylinder 1 is 10mm, the sample is made of stainless steel, and the sample is scraped flat along the top opening of the constant volume cylinder 1; (3) slowly adding clean water to the top opening of the fixed-volume cylinder 1 and the level of the top opening, and fully filling the fine aggregate gaps with the water; (4) pouring all the water and the sample in the fixed volume cylinder 1 into a measuring cylinder, adding clean water to 500ml, and adding a measuring cylinder plug to seal the measuring cylinder; (5) reversing the measuring cylinder back and forth for a plurality of times to fully mix the soil and the water in the sample; (6) placing the measuring cylinder on a horizontal table, dripping about 2mL of diluted polyacrylamide flocculation precipitator, properly stirring muddy water by using a glass tamper, standing, and quickly precipitating flocculation-shaped soil; (7) recording a graduated cylinder scale V1 of a boundary between the sample particles and the flocculent soil and a graduated cylinder scale V2 of the top of the flocculent soil, and calculating a volume V of the flocculent soil; (8) measuring prepared samples with mud content of each level according to the method to obtain different mud contents corresponding to different volumes of flocculent soil, making a mud content corresponding statistical table, and calculating the volume corresponding to the mud content of 0.1% level by using an interpolation method; (9) randomly drawing fine aggregates on site, and measuring the volume of the flocculent soil according to the steps (2) to (7); and (c) checking the mud content of the corresponding fine aggregate on a mud content corresponding statistical table by using the measured volume.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (1)
1. A method for rapidly detecting the mud content of fine aggregates is characterized by comprising the following steps:
(1) a plurality of air-dried samples with different mud contents are prepared indoors according to the increasing of 0.5 percent of mud content to 5 percent; (2) taking a sample, tamping the sample in three layers, filling the sample into a constant volume cylinder, and scraping the sample along the top opening of the constant volume cylinder; (3) slowly adding clean water to the top opening of the container and the level of the container, and fully filling the gaps of the fine aggregates with water; (4) pouring all the water and the sample in the constant volume cylinder into the measuring cylinder, adding clean water to 500ml, and adding a measuring cylinder plug to seal the measuring cylinder; (5) reversing the measuring cylinder back and forth for a plurality of times to fully mix the soil and the water in the sample; (6) placing a measuring cylinder on a horizontal table, dripping diluted polyacrylamide flocculation precipitator, properly stirring muddy water by using a glass tamper, standing, and quickly precipitating flocculation soil; (7) recording a graduated cylinder scale V1 of a boundary between the sample particles and the flocculent soil and a graduated cylinder scale V2 of the top of the flocculent soil, and calculating a volume V of the flocculent soil; (8) measuring the prepared samples with the mud content of each level according to the method to obtain different mud contents corresponding to different flocculent mud volumes, making a mud content corresponding statistical table, and calculating the volume corresponding to the mud content of 0.1% level by using an interpolation method; (9) randomly drawing fine aggregates on site, and measuring the volume of the flocculent soil according to the steps (2) to (7); the mud content of fine aggregate is found out in the statistical table corresponding to mud content by using the measured volume.
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| CN202011151305.4A CN112198302B (en) | 2020-10-25 | 2020-10-25 | Method and measuring tool for rapidly detecting mud content of fine aggregate |
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|---|---|---|---|
| CN202011151305.4A CN112198302B (en) | 2020-10-25 | 2020-10-25 | Method and measuring tool for rapidly detecting mud content of fine aggregate |
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| CN112198302A CN112198302A (en) | 2021-01-08 |
| CN112198302B true CN112198302B (en) | 2022-12-16 |
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