NL2030581B1 - Gap fluidity test device for filling mortar - Google Patents
Gap fluidity test device for filling mortar Download PDFInfo
- Publication number
- NL2030581B1 NL2030581B1 NL2030581A NL2030581A NL2030581B1 NL 2030581 B1 NL2030581 B1 NL 2030581B1 NL 2030581 A NL2030581 A NL 2030581A NL 2030581 A NL2030581 A NL 2030581A NL 2030581 B1 NL2030581 B1 NL 2030581B1
- Authority
- NL
- Netherlands
- Prior art keywords
- mortar
- box
- fluidity
- gap
- test
- Prior art date
Links
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 96
- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 238000005204 segregation Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 230000000007 visual effect Effects 0.000 claims description 3
- 239000002351 wastewater Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000006253 efflorescence Methods 0.000 claims 1
- 239000011440 grout Substances 0.000 claims 1
- 206010037844 rash Diseases 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 6
- 230000005484 gravity Effects 0.000 abstract description 2
- -1 i.e. Substances 0.000 abstract description 2
- 238000005429 filling process Methods 0.000 abstract 2
- 238000011160 research Methods 0.000 abstract 1
- 238000010998 test method Methods 0.000 abstract 1
- 238000012800 visualization Methods 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229940000425 combination drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
- G01N11/04—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture
- G01N11/06—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture by timing the outflow of a known quantity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N2011/0006—Calibrating, controlling or cleaning viscometers
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 present invention discloses a filling mortar gap fluidity test device, and belongs to the technical field of civil engineering and engineering material tests. A test device is designed to test the fluidity of a repair material, i.e., mortar, in a narrow gap. The device includes a grouting box, a mortar flowing channel, and a test box. The device can research the characteristics of a flowing form of the mortar in a filling process and meet the test requirements that the ertar flows under the gravity to fill a narrow space and, segregation. of the mortar‘ is considered, under different mixing ratios and different conditions. The present invention provides a convenient and visualized device for testing the fluidity of the repair mortar in the filling process, which solves the problems of non—visualization and measurement difficulty of a test method for the fluidity.
Description
P1016/NLpd
GAP FLUIDITY TEST DEVICE FOR FILLING MORTAR
The present invention relates to the technical field of tests of repair mortar in civil engineering, particularly to a gap flu- idity test device for filling mortar.
With people's continuous exploration of cement-based materi- als, it is gradually discovered that the cement-based materials have a series of advantages such as wide source and low energy consumption, and have been widely promoted and applied. Traffic engineering has developed rapidly worldwide since the 1950s, and road and bridge reinforcement projects are expected to reach a peak in recent years. In addition, in the conferences on green buildings and environmental protection related topics in various countries, it is clearly pointed out that "spatial patterns, in- dustrial structures, production methods, and lifestyles that save resources and protect the environment must be formed." Therefore, a low-cost, wide-ranging, effective, and easy-to-operate test de- vice is used to grasp and improve the flow behavior in a flow test of a reinforcement and repair material, i.e., mortar, which not only relieves the shortage of high-quality sand and gravel re- sources and saves resources, but also reduces the test waste and environmental pollution. This conforms to the national industrial policies, and have significant economic, social, and environmental benefits.
At present, most laboratories and construction sites use the flowing degree of mortar to evaluate the fluidity of mortar. Ex- isting test solutions: A hollow cylinder with an inner diameter of 30 mm and a height of 50 mm is placed in the center of a test board; mortar is poured into the cylinder; timing is started; within 2 s, the cylinder is lifted vertically upwards by 5 cm to 10 cm and held for 10 s to 15 s to enable a test sample to flow down freely; after 4 min, diameters in two vertical directions are measured, and an average value is taken as the fluidity of the mortar. This method measures the fluidity of the mortar when the mortar flows under its gravity. Although the method is simple, there are problems of inaccurate detection and excessive subjec- tive factors. For example, it takes 4 minutes from the beginning of the test to measuring of the fluidity. The final fluidities of the two mortar samples are 200 mm, and the time used is 1 min and 4 min, respectively. Although the fluidities are the same, the flowing time is obviously different. Therefore, this method is not accurate.
In an actual reinforcement project, an external steel plate reinforcement method has the advantages of simple construction, rapidness, no influence on the appearance of the structure, it has been widely used in engineering practice and is also an advanced reinforcement method with a wide range of applications in the world. The external steel plate reinforcement is using mortar to paste a steel plate on a surface of a structure. A gap filled is usually very narrow. The common problem of insufficient filling is mainly due to blockage and segregation layering during the flowing of the mortar, which seriously affects the structure reinforcement effect. However, there is no simple and convenient experimental device for testing the flow performance of the mortar on the con- struction site yet.
In order to solve the above-mentioned technical problems, the present application provides a filling mortar gap fluidity test device. The device includes a grouting box (1), a mortar flowing channel (2), a measurement box (3), a baffle plate (4), and a gap regulation box (5), characterized in that an opening in an upper part of the grouting box (1) is used to feed mortar; the grouting box (1) communicates with the flowing channel (2) and is separated from the flowing channel by the baffle plate (4) capable of freely moving up and down; two scales hl and h2 are arranged on an outer side of the measurement box (3), and are away from a box bottom by
Hl and H2 respectively; and a scale is arranged on a side surface of the gap regulation box (5).
Preferably, a mortar inlet and a mortar outlet are formed in an upper part of the measurement box of the device, so as to fa- cilitate cleaning the device after the test on the fluidity of the mortar ends; a cleaning method is adding clean water from the mor- tar inlet and discharging waste water from the mortar outlet. The device is made of visual organic glass, so that the form of the mortar passing through a narrow channel can be observed through the front part of the device; and whether the mortar has segrega- tion and weepage phenomena can be identified through color chang- es.
Preferably, the gap regulation box is arranged in the middle of the device. The gap regulation box is embedded to realize free regulation of a gap. The device is set according to the theory of communicating vessels; the filling mortar may automatically flow from a high liquid level end to a low liquid level end eventually till the mortar levels at two ends are balanced; and a height Hz of the grouting box is the same as a height Hc of the measurement box. In order to avoid an experimental failure due to the fact that the mortar cannot reach the scale H2, it should be set
H2<H/2.
Preferably, a length Lz and a width Bz of the grouting box are the same as a length Lc and a width Bc of the measurement box, and the length is greater than the width. Such a size design can reduce an error in the test time and ensure that the mortar level is horizontal at the scales hl and h2, which improves the measure- ment accuracy.
Compared with the existing art, the following technical ef- fects are achieved in the present invention. 1. Compared with a mortar flowing detection device in the ex- isting art, the test device provided with the grouting box, the flowing channel, the measurement box, the baffle plate, the gap regulation box, and the baffle plate to measure the fluidity has the advantages of simple device structure and convenient opera- tion. 2. In the test device, the upper part of the measurement box is provided with the mortar outlet to facilitate cleaning the de- vice after the test on the fluidity of the mortar ends; the clean-
ing method is adding clean water from the mortar inlet and dis- charging cleaning waste water from the mortar outlet. 3. The test device is made of the visual organic glass, so that the form of the mortar passing through the narrow channel can be observed through the front part of the device; and whether the mortar has segregation and weepage phenomena can be identified through color changes. 4. In the test device, the gap regulation box arranged in the middle is regulated to realize free regulation of the gap, without manufacturing experimental devices with different gaps, which is convenient to use on the construction site and avoids excessive waste of materials. 5. In the test device, according to the theory of communi- cating vessels, the filling mortar may automatically flow from the high liquid level end to the low liquid level end eventually till the mortar levels at two ends are balanced. After the grouting ex- periment ends, theoretically, the mortar on both sides is half, but the mortar will remain on the wall of the grouting box, and the measurement box is not full of mortar. In order to avoid an experimental failure due to the fact that the mortar cannot reach the scale H2, it should be set H2ZH/2. 6. The filling mortar gap fluidity test device according to claim 1 is characterized in that the length Lz and the width Bz of the grouting box are the same as the length Lc and the width Bec of the measurement box, and the length is greater than the width.
Such a size design is also to reduce the error in the test time.
According to fluid mechanics, it can be seen that the mortar is
Bingham fluid. The same lengths and widths of the grouting box and the measuring box will cause the flocculation to decrease in the flowing process, ensuring that the mortar level is balanced at the scales hl and h2 and reducing test errors, thereby improving the measurement accuracy.
FIG. 1 is a schematic structural diagram of a filling mortar gap fluidity test device;
FIG. 2 is a schematic diagram of a section A-A of a filling mortar gap fluidity test device; and
FIG. 3 is a schematic diagram of a baffle plate in a filling mortar gap fluidity test device; in the drawings, 1: grouting box; 2: mortar flowing channel; 5 3: test box; 4: baffle plate; 5: internal gap regulation box. (The internal gap regulation box is plugged through a gap in a rear back plate of the device and is pulled according to the scale to enable the width of the gap 2 to meet the construction require- ment.)
The following clearly and completely describes the technical solution in the embodiments of the present invention in combina- tion with the accompanying drawings of the embodiments of the pre- sent invention. Apparently, the described embodiments are only part of the embodiments of the present invention, not all embodi- ments. Based on the embodiments in the present invention, all oth- er embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
The present invention aims to provide a filling mortar gap fluidity test device, so as to solve the problems in the existing art.
In order to make the above-mentioned purposes, characteris- tics and advantages of the present invention more obvious and un- derstandable, the present invention is further described in detail below with reference to the accompanying drawings and specific im- plementation modes.
As shown in FIG. 1, this embodiment provides a filling mortar gap fluidity test device.
The device includes a grouting box (1), a mortar flowing channel (2), a measurement box (3), a baffle plate (4), and a gap regulation box (5). an opening in an upper part of the grouting box (1) is used to feed mortar; the grouting box (1) communicates with the flowing channel (2) and is separated from the flowing channel by the baffle plate (4) capable of freely moving up and down; two scales hl and h2 are arranged on an outer side of the measurement box (3), and are away from a box bottom by Hl and H2 respectively; and a scale is arranged on a side surface of the gap regulation box (5), which is convenient and flexible to regulate the width of the gap in an outer box of the gap regulation box (5).
In order to facilitate the cleaning of the device, in the de- vice of this embodiment, an upper part of the measurement box (3) is provided with an opening which is convenient for discharging the mortar.
In this embodiment, the length Lz, the width Bz, and the height Hz of the grouting box (1) are the same as the length Lc, the width Bc, and the height Hc of the measurement box (3), which are 10 cm, 20 cm, and 40 cm; and the length LL and the height HL of the flowing channel are respectively: 25 cm and 40 cm. The gap regulation box is pulled to adjust the width of the gap of the flowing channel, and the width can be adjusted to 1 cm to 5 cm.
This embodiment is applicable to testing the fluidity of the filling mortar with a fluidity of 200 mm or above.
Steps for testing the fluidity of the mortar in a narrow gap by using the device are as follows: 1) firstly, the width of the gap of the channel is adjusted to a desired position on demand according to the scale on the side surface of the gap regulation box; 2) the baffle plate is snapped in a snap-in slot, and the mortar is introduced into the grouting box from the mortar inlet; the mortar slowly fills the grouting box till the mortar is flush with the mortar inlet of the grouting box; a scraper blade is used to scrape and level the surface; 3) the baffle plate is lifted up quickly; the mortar flows towards the measurement box under the action of pressure; when the mortar level reaches the scale hl, time counting is started; when the mortar level reaches the scale h2, the time counting is stopped; a time difference At is obtained; 4) At can reflect the deformation velocity of the mortar; for the self-leveling mortar with the same fluidity, a smaller At indicates higher thixotropy, which shows that the mortar has bet-
ter plasticity and is favorable for construction on the site.
Whether the mortar has segregation can also be observed through the transparent organic glass.
In order to better realize the direct observation advantage of the device, the whole device is made of the organic glass; and further, the upper part of the measurement box is provided with a mortar outlet, which is convenient for cleaning.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2030581A NL2030581B1 (en) | 2022-01-17 | 2022-01-17 | Gap fluidity test device for filling mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2030581A NL2030581B1 (en) | 2022-01-17 | 2022-01-17 | Gap fluidity test device for filling mortar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL2030581B1 true NL2030581B1 (en) | 2023-07-25 |
Family
ID=82403668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2030581A NL2030581B1 (en) | 2022-01-17 | 2022-01-17 | Gap fluidity test device for filling mortar |
Country Status (1)
| Country | Link |
|---|---|
| NL (1) | NL2030581B1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000027437A (en) * | 1998-07-13 | 2000-01-25 | Kajima Corp | Test method for evaluating filling property of high- fluidity concrete, and tester |
| JP2005249630A (en) * | 2004-03-05 | 2005-09-15 | Takenaka Komuten Co Ltd | Total inspection method for fresh concrete and its device |
| US20080060423A1 (en) * | 2006-04-29 | 2008-03-13 | Wen-Chen Jau | Measurements of yield stress and plastic viscosity of cement-based materials via concrete rheometer |
| CN206300868U (en) * | 2016-12-21 | 2017-07-04 | 嘉华特种水泥股份有限公司 | A kind of device for detecting gravity flowing levelling mortar mobility |
| CN211955105U (en) * | 2020-05-06 | 2020-11-17 | 合安高铁股份有限公司 | Self-compaction concrete performance test bench |
-
2022
- 2022-01-17 NL NL2030581A patent/NL2030581B1/en active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000027437A (en) * | 1998-07-13 | 2000-01-25 | Kajima Corp | Test method for evaluating filling property of high- fluidity concrete, and tester |
| JP2005249630A (en) * | 2004-03-05 | 2005-09-15 | Takenaka Komuten Co Ltd | Total inspection method for fresh concrete and its device |
| US20080060423A1 (en) * | 2006-04-29 | 2008-03-13 | Wen-Chen Jau | Measurements of yield stress and plastic viscosity of cement-based materials via concrete rheometer |
| CN206300868U (en) * | 2016-12-21 | 2017-07-04 | 嘉华特种水泥股份有限公司 | A kind of device for detecting gravity flowing levelling mortar mobility |
| CN211955105U (en) * | 2020-05-06 | 2020-11-17 | 合安高铁股份有限公司 | Self-compaction concrete performance test bench |
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