CN217819848U - Testing arrangement of water retention rate of ready-mixed mortar - Google Patents
Testing arrangement of water retention rate of ready-mixed mortar Download PDFInfo
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- CN217819848U CN217819848U CN202121961964.4U CN202121961964U CN217819848U CN 217819848 U CN217819848 U CN 217819848U CN 202121961964 U CN202121961964 U CN 202121961964U CN 217819848 U CN217819848 U CN 217819848U
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Abstract
The utility model discloses a testing arrangement of guarantor's rate of water is protected to ready-mixed mortar belongs to building material and detects technical field, from top to bottom comprises apron, metal filter screen, ring examination mould and chassis cooperation in proper order, be provided with the recess on the chassis, the ring examination mould is located in the recess, the upper end of ring examination mould is equipped with the draw-in groove, the metal filter screen downside with the position that the draw-in groove is relative is equipped with the retainer plate, the apron is located the metal filter screen upside. The utility model discloses can prevent effectively that ring examination mould from shifting, the slurry is excessive, the test contact surface unevenness that absorbs water, the filter paper that absorbs water condition such as alignment not placed in the middle, guarantee the controllability, the accuracy of the water retention rate test of the appearance that awaits measuring, the error is little and easy and simple to handle.
Description
Technical Field
The utility model relates to a building material detects technical field, concretely relates to testing arrangement of water retention rate of ready-mixed mortar.
Background
At present, with the technical progress of domestic green buildings and the improvement of civilized and environment-friendly construction requirements, the ready-mixed mortar with controllable performance, environment-friendly construction and wide application range becomes the mainstream product of the building mortar. In the field construction performance of the premixed mortar, the water retention is a key index, and the bleeding condition of the premixed mortar on the field is reflected. The qualified water retention rate can ensure that the mortar is not segregated and layered in field application, thereby reducing water evaporation and reducing the risk of shrinkage cracking. Present chinese patent CN202020752968.0, a novel guarantor's testing arrangement, discloses that the cooperation through solid fixed ring of filter screen and the solid fixed ring of examination mould fixes the filter screen to make the filter screen stretch tightly, the solid fixed ring of filter screen and the solid fixed ring of examination mould constitute filter screen fixing device can be spacing to bottom plate and examination mould, avoids taking place relative displacement. However, the patent does not solve the problem that the cement paste filled in the test mold overflows.
In the process of testing the water retention of the mortar according to JGJ/T70-2009, the following defects of the existing common testing mode are found: firstly, the circular ring test die and the chassis are not provided with groove bayonets, so that the circular ring test die and the chassis are easy to shift in the processes of slurry die filling and inserting, tamping and tamping, and slurry overflows; secondly, no clamping groove for fixing the metal filter screen is arranged on the circular ring test mold, the metal filter screen is easy to deform in the use process, the contact surface with mortar slurry is uneven, the water absorption area size of the water absorption filter paper is influenced, and finally test data are unstable; thirdly, the impermeable sheet used as the cover plate is mostly made of an opaque material, so that whether the water-absorbing filter paper is centered after being placed under pressure cannot be directly observed, and whether the water-absorbing filter paper is permeated by water cannot be observed when the water-retaining property of the slurry is poor; the problems of large test operation error, large result fluctuation, poor test accuracy and the like are caused.
Disclosure of Invention
For overcoming above-mentioned prior art not enough, the utility model aims to provide a testing arrangement of water retention of ready-mixed mortar can block firm ring examination mould, ensures the metal filter screen roughness, and the real-time observation filter paper position and state of absorbing water improve the test accuracy, reduce the error and easy and simple to handle.
The utility model discloses a following technical scheme realizes:
the utility model provides a testing arrangement of water retention of ready-mixed mortar, from top to bottom comprises apron, metal filter screen, ring examination mould and chassis cooperation in proper order, be equipped with the recess on the chassis, the ring examination mould is located in the recess, the upper end of ring examination mould is equipped with the draw-in groove, the metal filter screen downside with the position that the draw-in groove is relative is equipped with the retainer plate, the apron is located the metal filter screen upside.
The recess on the chassis is used for fixed ring examination mould, effectively prevents to shift, prevents simultaneously that the slurry of packing into the ring examination mould is excessive, and the draw-in groove of ring examination mould upper end and the retainer plate of metal filter screen downside cup joint the cooperation for fixed metal filter screen prevents that metal filter screen compression from being out of shape in the use, and the apron is used for placing the heavy object of exerting pressure.
Preferably, the base plate is a solid circular iron plate, the diameter of the base plate is 120mm, and the thickness of the base plate is 5mm.
Preferably, the groove is an annular groove concentric with the base plate, and has an outer diameter of 110.2mm, an inner diameter of 99.8mm and a depth of 0.5mm. After the circular ring test mold is placed into the groove of the chassis, the test slurry can be effectively prevented from being displaced in real time during mold loading and tamping vibration, and the groove can also prevent the test slurry from bleeding and bleeding from the gap between the circular ring and the chassis.
Preferably, the ring trial mold is a solid iron ring, the outer diameter is 110mm, the inner diameter is 100mm, and the height is 25.5mm.
Preferably, the clamping groove is formed in the center line of the upper end of the circular ring test mold, the width of the clamping groove is 2mm, and the depth of the clamping groove is 2mm. The easy pressurized deformation of metal filter screen in the use, with mortar thick liquid contact surface unevenness, the influence absorbs water the area size that absorbs water of filter paper, and the design of draw-in groove can be used for fixed metal filter screen, makes metal filter screen and solid iron ring examination mould that has rigidity form a whole, through the fixed of ring examination mould, can guarantee when the pressurized roughness with mortar thick liquid contact surface.
Preferably, the metal screen is a circular screen, the size of the mesh is 45 μm, and the diameter is 110 +/-1 mm.
Preferably, the retainer plate is stainless steel, and the external diameter is 105.9mm, and the internal diameter is 104.1mm, and highly is 1.8mm, bonds through epoxy and sets up metal filter screen one side. The fixing ring has certain rigidity, is bonded on one side of the metal filter screen by alkali-resistant epoxy resin, can resist deformation, and can greatly improve the deformation resistance of the metal filter screen after being clamped into the clamping groove at the upper end of the circular ring test mold.
Preferably, the cover plate is made of round toughened glass, the diameter of the cover plate is 120mm, and the thickness of the cover plate is 5mm. The cover plate made of the toughened glass can bear certain heavy load pressure, and can directly observe whether the water-absorbing filter paper is centered after being placed under pressure, and can observe whether the water-absorbing filter paper is drenched by water in real time when the water retention property of the slurry is poor.
To sum up, the utility model discloses possess following beneficial effect:
1. the utility model designs a groove for placing a circular ring test mold, which can effectively prevent the test slurry from being filled into the mold and inserted and tamped to vibrate to generate displacement in real time, and simultaneously, the groove can also prevent the test slurry from bleeding from the gap between the circular ring and the chassis, thereby reducing the possibility of inconsistent filling slurry state caused by improper experimental operation;
2. the utility model designs a clamping groove to fix a metal filter screen, so that the metal filter screen and a solid iron ring test mold with rigidity form a whole, and through the fixation of the ring test mold, the flatness of the contact surface of the metal filter screen and mortar can be ensured when the metal filter screen is pressed, and the test data error caused by the inconsistent water absorption area is effectively reduced;
3. the utility model discloses an apron is circular toughened glass, outside can preventing the pressurized deformation, still can the direct observation filter paper that absorbs water place the position whether the centering, and the real-time observation filter paper that absorbs water is whether dredged by water, further improves the accuracy of data test process.
Drawings
Fig. 1 is a schematic structural diagram of a testing device for water retention of ready-mixed mortar in embodiment 1 of the present invention;
fig. 2 is a schematic cross-sectional structure diagram of a metal screen in embodiment 1 of the present invention;
fig. 3 is a schematic cross-sectional structure view of a chassis and a groove in embodiment 1 of the present invention;
labeled as: 1. a cover plate; 2. a metal screen; 3. testing a circular ring; 4. a chassis; 5. a stationary ring; 6. a card slot; 7. and (4) a groove.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
Example 1
As shown in fig. 1-3, this embodiment provides a testing arrangement of water retention of ready-mixed mortar, from top to bottom constitutes by apron 1, metal filters 2, ring examination mould 3 and the cooperation of chassis 4 in proper order, be equipped with recess 7 on the chassis 4, ring examination mould 3 is located in the recess 7, the upper end of ring examination mould 3 is equipped with draw-in groove 6, 2 downside of metal filters with the position that draw-in groove 6 is relative is equipped with retainer plate 5, apron 1 is located 2 upsides of metal filters.
The chassis 4 is a solid round iron plate with a diameter of 120mm and a thickness of 5mm.
The groove 7 is an annular groove concentric with the chassis 4, the outer diameter is 110.2mm, the inner diameter is 99.8mm, and the depth is 0.5mm.
The ring trial mold 3 is a solid iron ring, the outer diameter is 110mm, the inner diameter is 100mm, and the height is 25.5mm.
The clamping groove 6 is arranged at the central line position at the upper end of the circular ring test mold 3, the width of the clamping groove is 2mm, and the depth of the clamping groove is 2mm.
The metal filter screen 2 is a circular filter screen, the size of the mesh is 45 mu m, and the diameter is 110 +/-1 mm.
The retainer plate 5 is the stainless steel, and the external diameter is 105.9mm, and the internal diameter is 104.1mm, highly is 1.8mm, bonds through epoxy and sets up 2 one sides of metal filter screen.
The cover plate 1 is made of round toughened glass, the diameter of the cover plate is 120mm, and the thickness of the cover plate is 5mm. The utility model is suitable for a test of water retention in JGJ/T70-2009, the test slurry is for mixing good building mortar slurry, and slurry die filling volume sets, and measuring method is as follows:
(1) Mass m of weighing chassis and circular ring test mould 1 Mass m of 15 pieces of medium-speed water-absorbing filter paper 2 Placing the ring test mold into an annular groove arranged on the chassis seat;
(2) Loading the mixed ready-mixed mortar slurry into a circular test mold, inserting and tamping, scraping along the upper end of the circular test mold, and weighing the total weight m of the circular test mold, a chassis and the mortar for mold filling 3 ；
(3) Aligning the metal filter screen to the upper end of the circular test mould, pressing and firmly clamping a fixing ring on the lower side of the metal filter screen along a clamping groove in the upper end of the circular test mould to enable the metal filter screen to flatly cover the surface of the mould filling mortar, aligning and flatly placing weighed filter paper on the metal filter screen, covering the surface of the filter paper with a toughened glass cover plate, and pressing the toughened glass cover plate with a weight of 2 kg;
(4) Standing for 2min, removing the weight and cover plate, taking out the filter paper, and weighing 4 And calculating the water retention rate of the mortar according to a formula for testing the water retention of the mortar by JGJ/T70-2009.
The above description is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or replacements easily conceivable by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a testing arrangement of water retention of ready-mixed mortar, from top to bottom comprises apron, metal filter screen, ring examination mould and chassis cooperation in proper order, its characterized in that, be provided with the recess on the chassis, the ring examination mould is located in the recess, the upper end of ring examination mould is equipped with the draw-in groove, the metal filter screen downside with the position that the draw-in groove is relative is equipped with the retainer plate, the apron is located the metal filter screen upside.
2. The device for testing the water retention rate of the ready-mixed mortar according to claim 1, wherein the chassis is a solid circular iron plate with a diameter of 120mm and a thickness of 5mm.
3. The device for testing the water retention rate of the ready-mixed mortar according to claim 2, wherein the groove is an annular groove concentric with the chassis, and has an outer diameter of 110.2mm, an inner diameter of 99.8mm and a depth of 0.5mm.
4. The device for testing the water retention rate of the ready-mixed mortar according to claim 1, wherein the circular test mold is a solid iron ring with an outer diameter of 110mm, an inner diameter of 100mm and a height of 25.5mm.
5. The device for testing the water retention rate of the ready-mixed mortar according to claim 1, wherein the clamping groove is arranged at the central line of the upper end of the circular ring test mold, the width of the clamping groove is 2mm, and the depth of the clamping groove is 2mm.
6. The device for testing the water retention of the ready-mixed mortar according to claim 1, wherein the metal screen is a circular screen with a mesh size of 45 μm and a diameter of 110 ± 1mm.
7. The device for testing water retention of ready-mixed mortar according to claim 1, wherein the retainer ring is made of stainless steel, has an outer diameter of 105.9mm, an inner diameter of 104.1mm and a height of 1.8mm, and is adhered to one side of the metal filter screen through epoxy resin.
8. The device for testing the water retention rate of the ready-mixed mortar according to claim 1, wherein the cover plate is made of round toughened glass and has a diameter of 120mm and a thickness of 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121961964.4U CN217819848U (en) | 2021-08-20 | 2021-08-20 | Testing arrangement of water retention rate of ready-mixed mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121961964.4U CN217819848U (en) | 2021-08-20 | 2021-08-20 | Testing arrangement of water retention rate of ready-mixed mortar |
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| Publication Number | Publication Date |
|---|---|
| CN217819848U true CN217819848U (en) | 2022-11-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121961964.4U Active CN217819848U (en) | 2021-08-20 | 2021-08-20 | Testing arrangement of water retention rate of ready-mixed mortar |
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| Country | Link |
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| CN (1) | CN217819848U (en) |
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- 2021-08-20 CN CN202121961964.4U patent/CN217819848U/en active Active
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