CN109342267B - CRTS III type ballastless track self-compaction concrete test instrument - Google Patents
CRTS III type ballastless track self-compaction concrete test instrument Download PDFInfo
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- CN109342267B CN109342267B CN201811375113.4A CN201811375113A CN109342267B CN 109342267 B CN109342267 B CN 109342267B CN 201811375113 A CN201811375113 A CN 201811375113A CN 109342267 B CN109342267 B CN 109342267B
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- 239000004567 concrete Substances 0.000 title claims abstract description 62
- 238000012360 testing method Methods 0.000 title claims abstract description 51
- 238000005056 compaction Methods 0.000 title claims abstract description 35
- 239000011521 glass Substances 0.000 claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 239000011376 self-consolidating concrete Substances 0.000 claims description 19
- 230000002787 reinforcement Effects 0.000 claims description 8
- 239000011324 bead Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 20
- 230000008569 process Effects 0.000 abstract description 15
- 238000010276 construction Methods 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 2
- 229920005372 Plexiglas® Polymers 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006049 ring expansion reaction Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- 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
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- 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)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a CRTS III ballastless track self-compaction concrete test instrument, which is characterized in that a self-compaction concrete mold is placed after grooves are engraved on the periphery of a bottom plate, an organic glass plate is supported and placed above the self-compaction concrete mold, a slump barrel retaining hole with the diameter of 20cm is formed in the center of the organic glass plate, 16 circular holes with the diameter of 35mm for placing J rings are uniformly distributed on the circumference with the center of the organic glass plate as the diameter of 30cm, and circumferential scores for observing the expansion degree of concrete are arranged on the periphery of the circular holes with the center of the organic glass plate. The bubble distribution of the self-compaction concrete of the CRTS III ballastless track filling layer in actual pouring and the observability of the compaction degree of the concrete pouring process are observed through the organic glass layer, the test detection work is simplified, the performance of the poured concrete is observed, the relevant process parameters are adjusted, the repeatability and the reliability of test data are ensured, the actual construction is guided, and the actual on-site pouring success rate is improved.
Description
Technical Field
The invention relates to the field of self-compaction concrete detection of ballastless tracks, in particular to a CRTS III ballastless track self-compaction concrete fluidity test device.
Background
Along with the great development of high-speed rail construction in China, the high-speed rail construction becomes a gorgeous international business card, and the national style is shown in the international stage, so that the world is in focus. In China, the CRTS III slab ballastless track structure is formed by a track slab and filling layer self-compacting concrete into a composite integral structure and bears the load of a train together, the track slab and the filling layer self-compacting concrete are in reinforced connection by a door-shaped rib, an intermediate isolation layer is arranged between the filling layer self-compacting concrete and a base plate, and the spacing is carried out by a spacing groove on the base plate. The key of influencing the overall performance of the CRTS III slab ballastless track is the self-compaction concrete of the filling layer, so the self-compaction concrete of the CRTS III slab ballastless track is required to have the characteristics of high fluidity, clearance trafficability and segregation resistance, namely, the high-performance concrete which can be uniformly and compactly molded without vibrating and only relying on the self-weight effect during pouring.
At present, in order to meet the requirements of design and working performance, the on-line pouring condition is simulated by a uncovering plate process test, and the fluidity, clearance passing performance and segregation resistance of the self-compacting concrete are tested, so that the on-site pouring process requirement is met. The online external leveling site of the uncovering process test is simulated by adopting tools and materials used for formal construction, but the pouring process can not effectively observe each performance of concrete, so that the success rate is lower, and the waste of personnel, material resources and financial resources is larger, so that the effect is not ideal.
Disclosure of Invention
The invention aims to provide equipment for simulating the forming of self-compaction concrete of a cast-in-place filling layer and assisting in detection and research, wherein the equipment is used for observing bubble distribution of the self-compaction concrete of a CRTS III ballastless track filling layer in actual casting and observability of the compaction degree of the concrete in the casting process through an organic glass layer, simplifying test detection work, regulating relevant process parameters through observing the performance of the cast-in-place concrete, ensuring the repeatability and reliability of test data, guiding actual construction, improving the actual cast-in-place success rate and reducing the waste of personnel, material resources and financial resources.
The invention is realized by adopting the following technical scheme:
A CRTS III ballastless track self-compaction concrete test instrument comprises a bottom plate, wherein a self-compaction concrete mold is placed after grooves are engraved on the periphery of the bottom plate, a shifting plate groove is reserved horizontally on two corresponding side surfaces of the concrete mold, an organic glass plate is placed above the self-compaction concrete mold in a supporting mode, a slump barrel retaining hole with the diameter of 20cm is formed in the upper portion of the organic glass plate, 16 circular holes with the diameter of 35mm for placing J-rings are uniformly distributed on the circumference with the center of the organic glass plate being the diameter of 30cm, and circumference scores for observing the expansion degree of concrete are arranged on the circumference of the circular holes with the center of the organic glass plate.
The J ring comprises a rubber ring, 16 steel bar holes with the diameter of 18mm are formed in the circumference of the rubber ring, a limiting rubber snap ring is arranged at the position, located at each steel bar hole, of the lower surface of the rubber ring, the inner diameter of the limiting rubber snap ring is 18mm, the outer diameter of the limiting rubber snap ring is 35mm, the positions of the outer side faces of the steel bar holes on each limiting rubber snap ring and the corresponding rubber ring are provided with a slit, or the positions of the outer side faces of the limiting rubber snap ring located in four directions (namely, the directions perpendicular to each other through the center) and the steel bar holes on the corresponding rubber ring are provided with a slit; each steel bar hole is inserted with a smooth steel bar with the diameter of 18mm, wherein the side surfaces of the four smooth steel bars positioned in four directions (namely, four directions perpendicular to each other through the center) are respectively provided with a graduated scale plate, and the graduated scale plates are positioned in the slits.
According to the CRTS III ballastless track self-compaction concrete test instrument, the modified existing equal-proportion shrinkage CRTS III ballastless track self-compaction concrete die is placed on the bottom plate, a transparent organic glass plate is supported above the die, an improved J ring is arranged on the organic glass plate, and a rubber gasket is used for preventing leakage at the joint. And (3) assembling a CRTS III type ballastless track self-compaction concrete test instrument, completing performance detection of the CRTS III type slab ballastless track filling layer self-compaction concrete, and pouring according to a solid pouring process, so as to carry out test research.
The method comprises the steps of moving a test instrument to a flat test site, installing and refitting a self-compacting concrete die (pre-brushing demolding oil, installing a reinforcing steel bar net sheet in a limiting hole, keeping a hole of 20 cm-25 cm in the middle of the net sheet to meet the requirement of placing a slump barrel), placing a transparent organic glass plate on the net sheet, carrying out T500 and expansion test operation according to the standard, displacing the reserved concrete by using a shifting sheet device after the completion of T500 and expansion test to meet the required floor area of J-ring obstacle height difference test, placing an improved J-ring on a corresponding position on a glass plate for J-ring obstacle height difference test operation, testing, taking out the improved J-ring and the concrete shifting sheet device in the organic glass plate, sealing and leakage preventing by using rubber gaskets of the same caliber, and finally carrying out pouring by using a self-compacting concrete process of a simulated entity pouring CRTS III-type ballastless track filling layer.
The test equipment of the invention is based on the existing self-compaction concrete mould of the CRTS III ballastless track with equal proportion reduction and combines related test equipment, (1) an actual pouring concrete bottom plate is combined with the bottom plate specified with A.1 slump expansion and expansion time test method and A.2J ring expansion test method in the standard self-compaction concrete application technical specification JGJ/T283-2012; (2) The instrument and the organic glass of the J-ring obstacle height difference test method in the annex D of TJ GW 112-2003 in the standard CRTSIII type slab ballastless track self-compaction concrete temporary technical condition of high-speed railways are combined and transformed. Compared with solid pouring, the test equipment provides observability of bubble distribution and compactness of the concrete pouring process in actual pouring of self-compacting concrete of the CRTS III ballastless track filling layer through the organic glass layer, simplifies test detection work, can adjust related process parameters through observing the performance of concrete pouring, ensures repeatability and reliability of test data, guides actual construction and improves the success rate of actual in-situ pouring; on the other hand, because the template is reduced, the waste of personnel, material resources and financial resources is reduced, the cost of the earlier-stage board uncovering test is saved, and the economic benefit is improved.
The invention has reasonable design and good practical application and popularization value.
Drawings
FIG. 1 shows a side view of a test instrument according to the invention.
Fig. 1b shows an enlarged partial schematic view of fig. 1.
FIG. 1c shows a top view of the test apparatus according to the invention.
Figure 2a shows a side view of a triple bottom plate.
Figure 2b shows a top view of the triple bottom plate.
Fig. 3a shows a side view of a plexiglass plate.
Fig. 3b shows a top view of a plexiglass plate.
Fig. 4a shows a bottom view of the rubber ring.
Figure 4b shows a side view of the rubber ring.
Fig. 5a shows a bottom view of the J-ring.
Figure 5b shows a side view of the J-ring.
Fig. 5c shows a partial enlarged view of the J-ring.
Fig. 6a shows a top view of the original J-ring.
Figure 6b shows a side view of the original J-ring.
Fig. 6c shows a partial enlarged view of the original J-ring.
In the figure: 1-a bottom plate, 11-leveling bolts, 12-horizontal beads, 13-T-shaped leakage-proof gaskets and 14-portable handles; 2-mould, 21-plectrum, 22-plectrum groove, 23-pulp outlet and knife switch; 3-organic glass plate, 31-slump barrel retention hole, 32-round hole, 33-circumference nick; 4-J ring, 41-rubber ring, 42-limit rubber snap ring, 43-slit, 44-reinforcing bar hole, 45-smooth round reinforcing bar and 46-scale plate.
Detailed Description
The detailed description of the invention is further described below with reference to the drawings and examples. The following examples are presented to illustrate the present invention but are not intended to limit the scope of the present invention. The specific meaning of the terms in the present patent will be understood by those skilled in the art in specific cases.
A self-compaction concrete testing instrument for CRTS III ballastless tracks comprises a bottom plate 1, wherein the bottom plate 1 is a triple bottom plate, as shown in figures 2a and 2b, leveling bolts 11 are arranged on the bottom surface of the bottom plate 1, and horizontal beads 12 are arranged on the periphery of the upper surface of the bottom plate. The bottom plate 1 is grooved around and then is used for placing a self-compacting concrete mold 2, a poking piece groove 22 (shown in fig. 1) is reserved horizontally on two corresponding sides of the concrete mold 2, an organic glass plate 3 is supported and placed above the self-compacting concrete mold 2, the organic glass plate 3 also adopts a triple plate, a slump barrel retaining hole 31 with the diameter of 20cm is formed in the center of the organic glass plate 3, 16 round holes 32 with the diameter of 35mm for placing J-rings 4 are uniformly distributed on the circumference with the center of the hole as the diameter of 30cm, and circumference nicks 33 for observing the expansion degree of concrete are formed on the circumference of the round holes with the center of the hole, as shown in fig. 1 c.
The J ring 4 comprises a rubber ring 41, as shown in fig. 4a and 4b, 16 reinforcement holes 44 with the diameter of 18mm are formed in the circumference of the rubber ring 41, a limiting rubber snap ring 42 is integrally formed in the lower surface of the rubber ring 41 at each reinforcement hole, the inner diameter of the limiting rubber snap ring 42 is 18mm, the outer diameter of the limiting rubber snap ring is 35mm, a slit 43 is formed in the outer side face of each limiting rubber snap ring 42 and the reinforcement hole 44 on the corresponding rubber ring 41, or the slit 43 is formed in the outer side faces of the limiting rubber snap ring 42 and the reinforcement hole 44 on the corresponding rubber ring 41 in four directions; each rebar hole 44 is inserted with a round rebar 45 of 18mm diameter, wherein the sides of the four round rebar 45 in four directions (i.e. through four directions perpendicular to each other in the center) are each provided with a scale plate 46, the scale plates 46 being located in the slit 43.
In the concrete implementation, a modified current self-compaction concrete die for reducing the CRTS III ballastless track in equal proportion is placed on the triple bottom plate, a special transparent organic glass plate is supported above the modified current self-compaction concrete die for reducing the CRTS III ballastless track in equal proportion, an improved J ring is arranged on the special transparent organic glass plate, and a rubber gasket is used for preventing leakage at the joint.
The specific parameters of the device are determined as follows:
The method mainly comprises the steps of refitting the existing self-compaction concrete mould, the triple bottom plate, the special transparent organic glass plate and the improved J-ring parameters, sealing and leakage-preventing gaskets at the joint of the CRTS III ballastless track in equal proportion.
Refitting the existing self-compaction concrete mould for reducing CRTS III ballastless track in equal proportion: taking the current mould (inner membrane size) of 560cm multiplied by 250cm multiplied by 9cm as an example, the length and width are scaled down, the height is unchanged, a 3 mm-5 mm thin-wall steel plate is modified into 200cm multiplied by 100cm multiplied by 9cm, and a slidable concrete poking piece is arranged at the central template, so that the poking from concrete after the concrete expansion degree test is convenient for carrying out the J-ring obstacle height difference test.
The main basis of the transformation of the existing die is as follows: (1) The vertical interval of the original reinforcing steel bar net sheet is not changed, and only the length and width are scaled; (2) The size requirement of the related specification on the expansion degree substrate is met; (3) the method is convenient to imitate in-situ pouring and reasonably saves cost; and (4) reforming the template and meeting the original pouring process.
As shown in fig. 2a, 2b, the triple bottom plate: the overall size is 210cm multiplied by 110cm multiplied by h, namely the overall length and the width of the self-compacting concrete mould are required to meet the requirement of refitting the existing standard to reduce the size of the CRTS III ballastless track self-compacting concrete mould, the length and the width of each side of the self-compacting concrete mould exceed 5cm to 6cm respectively, grooves are engraved on the self-compacting concrete mould to be used for placing the mould, the depth is suitable for placing 1 layer of thin sealing and leakage-proof gaskets and 3cm to 5mm moulds, leveling bolts are arranged below a bottom plate, and 8 horizontal pipes (horizontal beads) are arranged on a template to be convenient to adjust, and the specific position is shown in figure 1; the bottom plate is divided into 3 parts: the size of the middle bottom plate 1 block is 110cm multiplied by h, the size of the bottom plates 2 blocks at two sides is 50cm multiplied by 110cm multiplied by h, each part is connected by a rotating shaft and is leak-proof by a T-shaped rubber gasket, the thickness h is preferably 3 cm-5 cm, the requirements of the expansion degree bottom plate are met according to relevant standard scores on the middle bottom plate, and the portable handles are arranged at two sides so as to be convenient to carry.
As shown in fig. 3a, 3b, transparent plastic glazing panels: the size of the middle plate is 210cm multiplied by 110cm multiplied by h, the thickness of the middle plate is 8mm to 10mm, the middle plate is divided into 1 middle plate and two side plates are 2 middle plates, and the size of the middle plate is 50cm multiplied by 110cm multiplied by h; the middle organic glass plate is placed by a slump barrel with a hole with the center of the middle organic glass plate being carved with the diameter of 20cm, and is placed by arranging 16 circular holes with the diameter of 35mm on the circumference with the center of the middle organic glass plate as the diameter of 30cm, so that the J ring with improved placement is satisfied, and circumferential nicks are carried out to facilitate observation of the expansion degree of the concrete.
As shown in fig. 5a, 5b, 5c, the modified J-ring: the method comprises the steps of respectively connecting thin iron sheets to the side surfaces of 4 phi 18 smooth round steel bars which are placed in four mutually perpendicular directions, marking the smooth round steel bars from top to bottom, inserting the smooth round steel bars and the phi 18 smooth round steel bars into steel bar holes (the inner diameter is 18 mm) of a rubber ring, inserting the phi 18 smooth round steel bars into other steel bar holes, arranging a limiting rubber snap ring (the longitudinal length is 10mm, the outer diameter is 35mm and the inner diameter is 18 mm) around each steel bar hole, wrapping, limiting and fixing the smooth round steel bars, then testing, and reading J-ring obstacle height difference test data (namely, measuring the height from the center concrete of a J-ring to the top surface of the J-ring, and directly reading the height difference from the top surface of the concrete at 4 positions to the top surface of the J-ring along the outer edge of the J-ring).
As shown in fig. 6a, 6b and 6c, the original J-ring is of an integral stainless steel structure, and is inconvenient to use.
Rubber leak-proof gasket: the mold is thinner, the integrity of the mold is not changed, only fine adjustment is suitable, and the mold is prepared according to the requirement, and the details are omitted.
The above parameters must be in accordance with existing specifications and related design rules to ensure practical feasibility.
The process flow comprises the following steps: the method comprises the steps of moving a test instrument to a flat test site, leveling and expanding a triple bottom plate through a lower leveling bolt, installing and refitting a self-compacting concrete die (pre-brushing demolding oil, installing a reinforcing steel bar net sheet in a limiting hole, keeping a hole of 20 cm-25 cm in the middle of the net sheet to meet the requirement of placing a slump bucket), placing a specially-made transparent organic glass plate on the self-compacting concrete die, performing T500 and expansion test operation according to a standard, displacing concrete for T500 and expansion test by using a shifting sheet device after the completion of the test, so as to meet the floor area required by J-ring obstacle height difference test, placing an improved J-ring on the glass plate at a corresponding position for J-ring obstacle height difference test operation, testing, taking out an improved J-ring and concrete shifting sheet device in the organic glass plate, sealing by using rubber gaskets with the same caliber, and finally performing pouring of the self-compacting concrete of the CRTS III-type ballastless track filling layer by simulation.
The test equipment provides observability of bubble distribution and compactness of concrete pouring process of self-compacting concrete of the CRTS III ballastless track filling layer in actual pouring through an organic glass layer, simplifies test detection work, can adjust related process parameters by observing concrete pouring performance, ensures repeatability and reliability of test data, guides actual construction and improves actual in-situ pouring success rate; on the other hand, because the template is reduced, the waste of personnel, material resources and financial resources is reduced, the cost of the earlier-stage board uncovering test is saved, and the economic benefit is improved.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and substitutions should also be considered to be within the scope of the present invention.
Claims (5)
1. The CRTS III ballastless track self-compaction concrete test instrument comprises a bottom plate (1), wherein a self-compaction concrete mold (2) is placed after grooves are engraved on the periphery of the bottom plate (1), and the inner film size of the concrete mold (2) is 200cm multiplied by 100cm multiplied by 9cm; the concrete mold (2) is characterized in that a plectrum groove (22) is horizontally reserved on two corresponding side surfaces: the self-compacting concrete mold is characterized in that an organic glass plate (3) is supported and placed above the self-compacting concrete mold (2), a slump barrel retaining hole (31) with the diameter of 20cm is formed in the center of the organic glass plate (3), 16 round holes (32) with the diameter of 35mm for placing J-rings (4) are uniformly distributed on the circumference with the center of the organic glass plate as the diameter of 30cm, and circumferential scores (33) for observing the expansion degree of concrete are formed in the circumference with the center of the organic glass plate and outside the circumference where the round holes (32) are formed;
The J ring (4) comprises a rubber ring (41), 16 reinforcement holes (44) with the diameter of 18mm are formed in the circumference of the rubber ring (41), a limiting rubber snap ring (42) is arranged on the lower surface of the rubber ring (41) and positioned at each reinforcement hole, the inner diameter of the limiting rubber snap ring (42) is 18mm, the outer diameter of the limiting rubber snap ring is 35mm, a slit (43) is formed in the outer side face of each limiting rubber snap ring (42) and the reinforcement hole (44) on the corresponding rubber ring (41), or slits (43) are formed in the outer side faces of the limiting rubber snap rings (42) positioned in four directions and the reinforcement holes (44) on the corresponding rubber ring (41); each steel bar hole (44) is internally inserted with a smooth round steel bar (45) with the diameter of 18mm, wherein the side surfaces of the four smooth round steel bars (45) positioned in four directions are respectively provided with a graduated scale plate (46), and the graduated scale plates (46) are positioned in the slit (43).
2. The CRTS iii-type ballastless track self-compaction concrete test apparatus according to claim 1, wherein: leveling bolts (11) are arranged on the bottom surface of the bottom plate (1), and horizontal beads (12) are arranged around the upper surface of the bottom plate.
3. The CRTS iii-type ballastless track self-compaction concrete test apparatus according to claim 2, wherein: the bottom plate (1) is a triple bottom plate and is divided into 3 parts: the middle bottom plate 1 is 110cm multiplied by h 1, the bottom plates 2 on the two sides are 50cm multiplied by 110cm multiplied by h 1, all parts are connected through a rotating shaft and leak-proof through a T-shaped rubber gasket (13), and the thickness h 1 is 3 cm-5 cm.
4. A CRTS iii-type ballastless track self-compaction concrete test apparatus according to claim 3, wherein: the dimension of the organic glass plate (3) is 210cm multiplied by 110cm multiplied by h 2, the thickness h 2 is 8 mm-10 mm, and the organic glass plate is divided into 3 parts: 1 middle plate, 2 side plates with the size of 110cm multiplied by h 2, and 50cm multiplied by 110cm multiplied by h 2; the intermediate plate is uniformly provided with 16 circular holes (32) with the diameter of 35mm for placing J rings on the circumference taking the center of the intermediate plate as the diameter of 30cm and the slump barrel retaining hole (31) with the diameter of 20cm, and circumferential scores (33) are formed on the center of the intermediate plate.
5. The CRTS iii type ballastless track self-compaction concrete test apparatus according to claim 4, wherein: the periphery of the organic glass plate (3) is provided with horizontal beads (12).
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| CN201811375113.4A CN109342267B (en) | 2018-11-19 | 2018-11-19 | CRTS III type ballastless track self-compaction concrete test instrument |
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| CN201811375113.4A CN109342267B (en) | 2018-11-19 | 2018-11-19 | CRTS III type ballastless track self-compaction concrete test instrument |
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| CN109342267B true CN109342267B (en) | 2024-05-10 |
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| CN202018414U (en) * | 2010-12-23 | 2011-10-26 | 中国铁道科学研究院铁道建筑研究所 | Working performance comprehensive test device for self-filling concrete for high speed railway slab ballastless tracks |
| CN102507382A (en) * | 2011-11-22 | 2012-06-20 | 武汉理工大学 | Testing method for evaluating working performance of self-compacting concrete |
| CN104360047A (en) * | 2014-11-20 | 2015-02-18 | 中国铁道科学研究院铁道建筑研究所 | Method and device for evaluating dynamic stability of self-compacting concrete of closed die cavity of plate-type ballastless track |
| KR101866803B1 (en) * | 2017-11-28 | 2018-06-18 | 한국건설기술연구원 | Slump-cone with concrete pouring bracket and concrete slump measuring method therewith |
| CN209296517U (en) * | 2018-11-19 | 2019-08-23 | 中铁十七局集团第一工程有限公司 | III type non-fragment orbit self-compacting concrete test apparatus of CRTS |
-
2018
- 2018-11-19 CN CN201811375113.4A patent/CN109342267B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202018414U (en) * | 2010-12-23 | 2011-10-26 | 中国铁道科学研究院铁道建筑研究所 | Working performance comprehensive test device for self-filling concrete for high speed railway slab ballastless tracks |
| CN102507382A (en) * | 2011-11-22 | 2012-06-20 | 武汉理工大学 | Testing method for evaluating working performance of self-compacting concrete |
| CN104360047A (en) * | 2014-11-20 | 2015-02-18 | 中国铁道科学研究院铁道建筑研究所 | Method and device for evaluating dynamic stability of self-compacting concrete of closed die cavity of plate-type ballastless track |
| KR101866803B1 (en) * | 2017-11-28 | 2018-06-18 | 한국건설기술연구원 | Slump-cone with concrete pouring bracket and concrete slump measuring method therewith |
| CN209296517U (en) * | 2018-11-19 | 2019-08-23 | 中铁十七局集团第一工程有限公司 | III type non-fragment orbit self-compacting concrete test apparatus of CRTS |
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| CN109342267A (en) | 2019-02-15 |
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