CN112485078B - Forming method of unconfined compressive strength sample of reclaimed water stabilized macadam - Google Patents
Forming method of unconfined compressive strength sample of reclaimed water stabilized macadam Download PDFInfo
- Publication number
- CN112485078B CN112485078B CN202011193319.2A CN202011193319A CN112485078B CN 112485078 B CN112485078 B CN 112485078B CN 202011193319 A CN202011193319 A CN 202011193319A CN 112485078 B CN112485078 B CN 112485078B
- Authority
- CN
- China
- Prior art keywords
- forming
- sample
- inner cylinder
- outer cylinder
- rotating
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0298—Manufacturing or preparing specimens
-
- 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
Landscapes
- 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)
- Sampling And Sample Adjustment (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to the technical field of unconfined compressive strength tests, in particular to a method for forming an unconfined compressive strength sample of reclaimed water stabilized macadam, which comprises a charging step, a prepressing step, a placing step, a compacting step, a demoulding step and a pushing step; through the sample forming mechanism and the compaction pushing-out mechanism, the multiple samples can be manufactured at one time by matching with the forming steps, the sample manufacturing time is greatly shortened, a group of samples are formed at one time, and the forming pressure and the forming process are the same, so that the integrity of each sample is ensured, the difference between the samples is reduced, the problem of repeated sample supplement is avoided, the convenience degree of sample compaction forming and demoulding operation is improved to a greater extent, the difficulty of sample compaction forming and demoulding operation is reduced, and the sample manufacturing efficiency is improved; the compacting, shaping and demoulding integrated operation of the sample is realized, the compacting and demoulding quality of the sample is ensured, and meanwhile, the compacting and demoulding efficiency of the sample is greatly improved.
Description
Technical Field
The invention relates to the technical field of unconfined compressive strength tests, in particular to a forming method of a reclaimed water stabilized macadam unconfined compressive strength sample.
Background
In recent years, infrastructure construction is still continuously expanded, and geotechnical engineering and test workload is increasing day by day; the test sample of unconfined compressive strength test of highway geotechnical test regulation (JTG E40-2007) needs to be compacted and demoulded before measurement, and the test sample prepared by the test is large, and the efficiency of the compacting and demoulding process is low.
In the prior art, compaction and demolding are respectively completed through different equipment operations, manual hydraulic jacks are mostly adopted for compaction and demolding, the physical consumption is large during operation, only one sample can be operated at a time, and the working efficiency is low; meanwhile, because the weight of the sample and the die cylinder is large, the stability is poor, and deviation is easy to generate in the rising process, the sample and the die cylinder need to be realigned; and after the traditional gravel sample is compacted, the demolding is difficult to succeed due to the transverse pressure of the mold during demolding, and the sample is easy to damage. Therefore, the method for forming the unconfined compressive strength sample of the reclaimed water stabilized macadam in the prior art has the defects that the sample preparation process is relatively complicated, the sample is easy to damage in the demolding process, the test efficiency is influenced and the like.
Disclosure of Invention
Aiming at the technical problems, the invention provides a method for forming a reclaimed water-stabilized macadam unconfined compressive strength sample, which aims to solve the problems that the sample preparation process of the reclaimed water-stabilized macadam unconfined compressive strength sample forming method in the prior art is more complicated, the sample is easy to damage in the demolding process, the test efficiency is influenced and the like.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a method for forming unconfined compressive strength samples of reclaimed water stabilized macadam, which comprises a forming die consisting of a plurality of sample forming mechanisms and compaction pushing mechanisms; the sample forming mechanism is detachably fixed on the compaction pushing-out mechanism; the sample forming mechanism comprises a forming inner cylinder, a forming outer cylinder, a top cover and a cushion block; the forming inner cylinder and the forming outer cylinder are both in a cylindrical structure with openings at two ends, the forming inner cylinder is coaxially arranged in the forming outer cylinder, and the forming inner cylinder is detachably fixed in the forming outer cylinder; the top cover is detachably fixed at the top of the forming inner cylinder; the cushion block is detachably fixed at the bottom of the forming inner cylinder; the compaction push-out mechanism comprises a tray and a top plate; the tray can reciprocate in the vertical direction, and the sample forming mechanism is detachably arranged on the tray; a space is reserved between the top plate and the tray in the vertical direction; the top plate comprises a top plate body and a plurality of rotating assemblies; the top plate body is provided with a plurality of reserved push-out sample holes, and the rotating assembly is rotatably arranged on the top plate body;
a charging step: padding filter paper on a cushion block, sleeving the forming inner cylinder on the cushion block, and pouring the weighed stone breaking test material into the forming inner cylinder;
pre-pressing: after the loading is finished, covering filter paper on the surface of the stone crushing test material, and putting the top cover into the forming inner cylinder for prepressing;
a placing step: respectively placing the pre-pressed forming inner cylinder and the pre-pressed forming outer cylinder at preset positions of a tray;
compacting: rotating the rotating assembly until the reserved push-out sample hole is blocked, jacking the forming inner cylinder and the forming outer cylinder in the vertical direction to enable the forming inner cylinder and the forming outer cylinder to be in contact with the rotating assembly, and then jacking until the upper part of the top cover is flush with the forming inner cylinder and the forming outer cylinder;
demoulding: adjusting the reserved bolt to adjust the position of the forming inner cylinder, enabling the forming outer cylinder to fall into the tray, and taking down the top cover;
a push-out step: and rotating the rotating assembly until the reserved push-out sample hole is exposed, jacking the sample in the vertical direction until the sample is completely pushed out of the reserved push-out sample hole, and taking out the sample.
The invention provides a method for forming an unconfined compressive strength sample of reclaimed water stabilized macadam, further, the forming inner cylinder is formed by combining a plurality of arc-shaped petals, and the arc-shaped petals are detachably connected;
before the charging step, an assembling step is also included: a plurality of detachable arc petals are assembled into a closed forming inner cylinder, wherein a reserved bolt with threads is arranged on the outer wall of each arc petal.
The invention provides a method for forming an unconfined compressive strength test sample of reclaimed water stabilized macadam, which further comprises a fixing step between the assembling step and the charging step: and screwing the reserved bolt on the outer wall of the forming inner cylinder until the reserved bolt is fixedly connected with the forming outer cylinder.
The invention provides a method for forming an unconfined compressive strength sample of reclaimed water stabilized macadam, which comprises the following steps: and adjusting the reserved bolts, moving each arc-shaped petal to enable the forming outer cylinder to fall into the tray, and taking down the top cover.
The invention provides a method for forming an unconfined compressive strength sample of reclaimed water stabilized macadam, further, a plurality of annular grooves are uniformly formed in a tray; the center of the annular groove is provided with a boss; the forming inner cylinder is detachably arranged on the boss, and the forming outer cylinder is detachably arranged in the annular groove;
the placing step specifically comprises: and respectively placing the pre-pressed sample forming inner cylinder and the pre-pressed sample forming outer cylinder on the lug boss and in the annular groove of the tray.
The invention provides a method for forming an unconfined compressive strength sample of reclaimed water stabilized macadam, which comprises the following steps: and adjusting the reserved bolts, moving each arc-shaped flap to enable the forming outer cylinder to fall into the annular groove, and taking down the top cover on the sample.
The invention provides a method for forming an unconfined compressive strength sample of reclaimed water stabilized macadam.
The invention provides a method for forming an unconfined compressive strength sample of reclaimed water stabilized macadam, and further comprises a plurality of support rods, wherein the compaction pushing mechanism is arranged on the support rods; the supporting rod is detachably connected with the top plate; the tray is slidably arranged on the supporting rod in the vertical direction;
the compacting step specifically comprises: rotating the rotating assembly until plugging up and reserving and pushing out the sample hole, jacking the tray and upwards moving along the supporting rod, making the sample forming inner cylinder, the forming outer cylinder contact with the rotating assembly, and then jacking to the upper part of the top cover and the parallel and level of the sample forming inner cylinder and the forming outer cylinder.
The invention provides a method for forming an unconfined compressive strength sample of reclaimed water stabilized macadam, further comprising the steps that a rotating assembly comprises a rotating baffle and a rotating handle; the rotating handle is detachably fixed on the rotating baffle; the top plate body is provided with a rotating hole; the rotating handle is arranged in the rotating hole in a penetrating way; the rotary baffle is rotatably arranged in the reserved push-out sample hole through the rotary handle, the rotary baffle is in clearance fit with the reserved push-out sample hole, and the rotary baffle is arranged corresponding to the reserved push-out sample hole;
the compacting step specifically comprises: and rotating the rotating handle to enable the rotating baffle to plug the reserved pushed sample hole, jacking the sample forming inner cylinder and the forming outer cylinder in the vertical direction to enable the sample forming inner cylinder and the forming outer cylinder to be in contact with the rotating baffle, and then jacking the sample forming inner cylinder and the forming outer cylinder to the upper part of the top cover to be parallel and level with the sample forming inner cylinder and the forming outer cylinder.
The invention provides a method for forming an unconfined compressive strength sample of reclaimed water stabilized macadam, which comprises the following steps: and (3) padding filter paper on the cushion block, sleeving the forming inner cylinder on the cushion block, and pouring the weighed stone breaking test material into the forming inner cylinder for multiple times.
The technical scheme has the following advantages or beneficial effects:
the invention provides a method for forming an unconfined compressive strength sample of reclaimed water stabilized macadam, which comprises a loading step, a prepressing step, a placing step, a compacting step, a demoulding step and a pushing step; through the multiple sample forming mechanisms and the compaction pushing-out mechanisms, the multiple samples can be manufactured at one time by matching with the forming steps, the operation is simple and convenient, the sample manufacturing time is greatly shortened, and a group of samples are formed at one time, the forming pressure and the forming process are the same, so that the integrity of each sample is ensured, the difference between the samples is reduced, the problem of repeated sample supplement is avoided, the convenience degree of sample compaction forming and demoulding operation is improved to a greater extent, the difficulty of sample compaction forming and demoulding operation is reduced, and the sample manufacturing efficiency is improved; the compacting, shaping and demoulding integrated operation of the sample is realized, the compacting and demoulding quality of the sample is ensured, and meanwhile, the compacting and demoulding efficiency of the sample is greatly improved; the method solves the problems that the sample preparation process of the sample is more complicated and the sample is easy to damage in the demoulding process, so that the test efficiency is influenced and the like in the reclaimed water stabilized macadam unconfined compressive strength sample forming method in the prior art.
Drawings
The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 is a schematic partial flow chart of a method for forming an unconfined compressive strength test sample of the reclaimed water stabilized macadam provided in example 1 of the present invention;
FIG. 2 is a schematic diagram of a three-dimensional structure of a forming mold in the method for forming an unconfined compressive strength sample of the reclaimed water stabilized macadam provided in example 1 of the present invention;
FIG. 3 is a schematic diagram of the three-dimensional structures of the forming outer cylinder and the forming inner cylinder in the method for forming the unconfined compressive strength sample of the reclaimed water stabilized macadam provided by the embodiment 1 of the invention;
FIG. 4 is a schematic diagram of a three-dimensional structure of a forming outer cylinder in the forming method of the unconfined compressive strength sample of the reclaimed water stabilized macadam provided in embodiment 1 of the invention;
FIG. 5 is a schematic diagram of a three-dimensional structure of a forming inner cylinder in the method for forming an unconfined compressive strength sample of the reclaimed water stabilized macadam provided in example 1 of the present invention;
FIG. 6 is a schematic diagram of the three-dimensional structure of a cushion block in the method for forming an unconfined compressive strength sample of the reclaimed water stabilized macadam provided in example 1 of the present invention;
FIG. 7 is a schematic diagram of the three-dimensional structure of a top cover in the method for forming an unconfined compressive strength sample of the reclaimed water stabilized macadam provided in example 1 of the present invention;
FIG. 8 is a schematic diagram of a three-dimensional structure of a compaction and extrusion mechanism in the method for forming an unconfined compressive strength sample of the reclaimed water stabilized macadam provided in example 1 of the present invention;
FIG. 9 is a schematic diagram of the three-dimensional structure of the top plate in the method for forming the unconfined compressive strength test piece of the reclaimed water stabilized macadam provided in example 1 of the present invention;
FIG. 10 is a schematic view of the structure of the bottom of the top plate in the method for forming the unconfined compressive strength test piece of the reclaimed water stabilized macadam provided in example 1 of the present invention;
FIG. 11 is a schematic diagram of a top plate with a rotary hole formed therein in a method for forming an unconfined compressive strength sample of the reclaimed water stabilized macadam provided in example 1 of the present invention;
FIG. 12 is a schematic three-dimensional structure diagram of a rotating baffle and a rotating handle in the method for forming the unconfined compressive strength test sample of the reclaimed water stabilized macadam provided by the embodiment 1 of the invention;
FIG. 13 is a schematic diagram showing the three-dimensional structure of a pallet in the method for forming an unconfined compressive strength test piece of the reclaimed water stabilized macadam provided in example 1 of the present invention;
fig. 14 is a schematic diagram of the three-dimensional structure of the base and the hydraulic driving part in the method for forming the unconfined compressive strength sample of the reclaimed water stabilized macadam provided in embodiment 1 of the invention.
Detailed Description
In the following, the technical solutions in the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention without making creative efforts, belong to the protection scope of the invention.
In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "connected" should be construed broadly and may be, for example, fixedly connected, detachably connected or integrally connected; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
in the prior art, compaction and demolding are respectively completed through different equipment operations, manual hydraulic jacks are mostly adopted for compaction and demolding, the physical consumption is large during operation, only one sample can be operated at a time, and the working efficiency is low; meanwhile, because the weight of the sample and the die cylinder is large, the stability is poor, and deviation is easy to generate in the rising process, the sample and the die cylinder need to be realigned; and after the traditional gravel sample is compacted, the demolding is difficult to succeed due to the transverse pressure of the mold during demolding, and the sample is easy to damage. Therefore, the method for forming the unconfined compressive strength sample of the reclaimed water stabilized macadam in the prior art has the defects that the sample preparation process is relatively complicated, the sample is easy to damage in the demolding process, the test efficiency is influenced and the like.
In order to solve the problems that the sample preparation process of the regenerated water-stable macadam unconfined compressive strength sample forming method in the prior art is more complicated, and the sample is easy to damage in the demolding process, so that the test efficiency is influenced and other defects exist, the method for forming the regenerated water-stable macadam unconfined compressive strength sample provided by the embodiment 1 of the invention comprises a forming die consisting of a plurality of sample forming mechanisms 1 and compaction push-out mechanisms 2, as shown in figures 1-14; the sample forming mechanism 1 is detachably fixed on the compaction pushing-out mechanism 2; the sample forming mechanism 1 comprises a forming inner cylinder 11, a forming outer cylinder 12, a top cover 13 and a cushion block 14; the forming inner cylinder 11 and the forming outer cylinder 12 are both in a cylindrical structure with openings at two ends, the forming inner cylinder 11 is coaxially arranged in the forming outer cylinder 12, and the forming inner cylinder 11 is detachably fixed in the forming outer cylinder 12; the top cover 13 is detachably fixed on the top of the forming inner cylinder 11; the compaction pushing-out mechanism 2 comprises a tray 24 and a top plate 23; the tray 24 can reciprocate in the vertical direction, and the sample molding mechanism 1 is detachably arranged on the tray 24; the top plate 23 is spaced from the tray 24 in the vertical direction; the top plate 23 includes a top plate body 231 and a plurality of rotating assemblies 232; the top plate body 231 is provided with a plurality of reserved push-out sample holes 2311, the rotating assembly 232 is rotatably arranged on the top plate body 231, the rotating assembly 232 can reciprocate along the vertical direction, the rotating assembly 232 is in clearance fit with the reserved push-out sample holes 2311, and the rotating assembly 232 and the reserved push-out sample holes 2311 are correspondingly arranged.
Specifically, in the present embodiment, the inner diameter of the forming inner cylinder 11 is 150mm, the height is 230mm, and the cylinder wall thickness is 13.5mm; the inner diameter of the forming outer cylinder 1212 is 303.5mm, the height is 230mm, and the wall thickness of the cylinder is 13.5mm; the overall height of the top cover 13 is 40mm; the overall height of the cushion block 14 is 40mm; a circular groove is formed in the bottom of the cushion block 14, the height of the circular groove is 30mm, the diameter of the circular groove is 130mm, and the annular thickness of the circular groove is 10mm; the diameter of the reserved push-out sample hole 2311 is 160mm, it penetrates the entire top plate 23, and there are three reserved push-out sample holes 2311 equally divided on the top plate 23.
A charging step S103: and (3) padding filter paper on the cushion block 14, sleeving the forming inner cylinder 11 on the cushion block 14, and pouring the weighed gravel test material into the forming inner cylinder 11. Specifically, filter paper is padded on a cushion block 14 at the bottom of a mold with the height of 40mm and the diameter of 150mm, then the forming inner cylinder 11 is sleeved on the cushion block 14, and the weighed gravel test material is poured into the forming inner cylinder 11 for three times.
A pre-pressing step S104: after the loading is completed, filter paper is covered on the surface of the crushed stone test material, and the top cover 13 is placed into the forming inner cylinder 11 and pre-pressed, so that part of the top cover 13 is pressed into the forming inner cylinder 11. And (3) padding filter paper on a cushion block 14 at the bottom of the mold with the height of 40mm and the diameter of 150mm, then sleeving the forming inner cylinder 11 on the cushion block 14, and pouring the weighed gravel test material into the forming inner cylinder 11 for three times.
A placing step S105: the pre-pressed forming inner cylinder 11 and the forming outer cylinder 12 are respectively placed at preset positions of the tray 24. Specifically, a forming inner cylinder 11 and a forming outer cylinder 12 for placing unconfined compressive strength samples are placed on a tray 24, the forming inner cylinder 11 and the forming outer cylinder 12 for placing the prepressed unconfined compressive strength samples are placed on the tray 24, three annular grooves 241 and three circular bosses 242 for placing the samples are arranged on the tray 24, and when the forming inner cylinder 11 and the forming outer cylinder 12 are placed, the forming inner cylinder 11 is placed on the circular bosses 242, so that the forming outer cylinder 12 is just positioned in the annular grooves 241 outside the bosses 242.
A compaction step S106: the rotating assembly 232 is rotated until the reserved sample pushing hole 2311 is blocked, the forming inner cylinder 11 and the forming outer cylinder 12 are jacked up in the vertical direction to be in contact with the rotating assembly 232, and then the upper portion of the top cover 13 is jacked up to be flush with the forming inner cylinder 11 and the forming outer cylinder 12. Specifically, after the rotation blocking plate 2321 is closed off the reserved pushed sample hole 2311, a power supply is inserted, the electrohydraulic driving device 21 is lifted until the rotation blocking plate 2321 that the unconfined compressive strength sample forming inner cylinder 11 and the forming outer cylinder 12 are pushed against the top plate 23, and when the upper part of the top cover 13 is flush with the forming inner cylinder 11 and the forming outer cylinder 12 of the unconfined compressive strength sample, the lifting is stopped.
A mold release step S107: adjusting the reserved bolt 112 to adjust the position of the forming inner cylinder 11, so that the forming outer cylinder 12 falls into the tray 24, and taking down the top cover 13; specifically, the electrohydraulic driving device 21 is firstly lowered to a certain position, the forming inner cylinder 11 and the nut of the forming outer cylinder 12 of the unconfined compressive strength sample are screwed towards the direction of the forming inner cylinder 11 until the three arc-shaped petals 111 of the forming inner cylinder 11 can move back and forth along with the reserved bolts 112, after loosening, the forming outer cylinder 12 just falls into the annular groove 241 on the tray 24, and the top cover 13 on the sample is removed.
Push-out step S108: the rotating member 232 is rotated until the reserved push-out sample hole 2311 is exposed, and the sample is lifted in the vertical direction until the sample is completely pushed out of the reserved push-out sample hole 2311, and the sample is taken out. Specifically, the hydraulic driving part is firstly lowered to a certain position, the nuts of the forming inner cylinder 11 and the forming outer cylinder 12 of the unconfined compressive strength sample are screwed towards the direction of the forming inner cylinder 11 until the three arc-shaped petals 111 of the forming inner cylinder 11 can move back and forth along with the reserved bolts 112, after loosening, the forming outer cylinder 12 just falls into the annular groove 241 on the tray 24, and the top cover 13 on the sample is removed.
The forming method of the unconfined compressive strength sample of the reclaimed water stabilized macadam provided by the invention realizes the integrated operation of compaction shaping and demoulding of the sample, ensures the compaction and demoulding quality of the sample, and greatly improves the compaction and demoulding efficiency of the sample. The concrete expression is as follows: through a plurality of sample forming mechanism 1 and compaction ejecting mechanism 2, cooperate above-mentioned forming step, can once only make a plurality of samples, and easy and simple to handle, the sample preparation time has been reduced by a wide margin, and a set of sample one shot forming, forming pressure and forming process homogeneous phase, thereby the integrality of each sample has not only been ensured, the difference between the samples has been reduced, the problem of repeated benefit appearance has been avoided, the degree of convenience of sample compaction design and drawing of patterns operation has still been improved to a great extent, thereby the degree of difficulty of sample compaction design and drawing of patterns operation has been reduced, and then system appearance efficiency has been improved. Therefore, the invention solves the problems that the regenerated water-stable macadam unconfined compressive strength sample forming method in the prior art has the defects that the sample preparation process is more complicated, the sample is easy to damage in the demoulding process, the test efficiency is influenced and the like.
In order to improve the demolding efficiency and reduce the damage degree of the sample as much as possible, the method for molding the unconfined compressive strength sample of the reclaimed water stabilized macadam provided by the embodiment further includes that the molding inner cylinder 11 is formed by combining a plurality of arc-shaped petals 111, and the arc-shaped petals 111 are detachably connected;
before the charging step S103, an assembling step S101 is further included: a plurality of detachable arc-shaped petals 111 are assembled into a closed forming inner cylinder 11, wherein a threaded reserved bolt 112 is arranged on the outer wall of each arc-shaped petal 111. Specifically, a plurality of bolt preformed holes 121 are uniformly formed in the forming outer cylinder 12; the outer forming cylinder 12 is connected with all the arc petals 111 through bolts; the three arc-shaped flaps 111 are assembled into a closed cylinder, so that the occlusal openings of the three arc-shaped flaps are tightly connected together.
In the embodiment, the arc-shaped flap 111 is one third of the forming inner cylinder 11, the height is 230mm, and the thickness is 13.5mm; the diameter of each of the three bolt preformed holes 121 is 15mm, and the thickness of each bolt preformed hole is 13.5mm; the three reserved bolts 112 are arranged on the central axis of the outer side of the arc-shaped flap 111, the diameter of a screw rod of each reserved bolt 112 is 15mm, the length of the screw rod is 83.5mm, threads are arranged outside the screw rod, the diameter of a bolt head is 40mm, and the thickness of the bolt head is 30mm; the nut is sleeved on the reserved bolt 112, the nut is in a regular hexagon shape, a bolt hole is formed in the nut, the diameter of the hole is 15mm, the depth of the hole is 30mm, and internal threads are formed in the inner wall of the hole and used for fixing the forming inner barrel 11. Through the three lamella section of thick bamboo of application dismantlement formula, three arc lamella 111 promptly to when making it carry out unconfined compressive strength sample shaping to rubble material, both easy and simple to handle, can improve operating efficiency when the drawing of patterns again, thereby reduce sample drawing of patterns process's damage, specifically, the edge of three arc lamella 111 has all set up the interlock mouth, thereby can make to realize the inseparable bonding between the three arc lamella 111, and then fixes shaping inner tube 11 better, improves the whole operational reliability of mould.
In order to improve the operational reliability of the forming inner cylinder 11 and the forming outer cylinder 12, the method for forming the unconfined compressive strength test sample of the reclaimed water stabilized macadam provided by the embodiment further comprises a fixing step S102 between the assembling step S101 and the charging step S103: the reserved bolt 112 on the outer wall of the forming inner cylinder 11 is screwed until the forming outer cylinder 12 is fixedly connected. The reserved bolt 112 on the outer side of the forming inner cylinder 11 is provided with a nut, the diameter of a bolt hole in the nut is 15mm, the thickness of the nut is 30mm, and threads are reserved on the inner side of the bolt hole. After the three arc-shaped petals 111 are assembled, the nut is screwed in the direction away from the forming inner cylinder 11 until the nut is screwed to the forming outer cylinder 12 and is not screwed.
In order to further improve the compacting and demolding efficiency of the sample, in the method for forming the unconfined compressive strength sample of the recycled water-stabilized macadam provided in this embodiment, the demolding step S107 specifically includes: the reserved bolts 112 are adjusted, the arc-shaped petals 111 are moved to enable the outer forming cylinder 12 to fall into the tray 24, and the top cover 13 is removed. In the present embodiment, the top cover 13 includes a top cover body 131 and a boss 132; the top cover body 131 is cylindrical with an opening at one end, and the top cover body 131 can be in interference fit with the forming inner cylinder 11; the protrusion 132 is fixedly disposed at the center inside the top cover body 131; the spacer 14 is detachably fixed to the bottom of the inner mold cylinder 11. Specifically, the top cover 13 is 40mm high overall, the circular groove inside the top cover 13 is 130mm in diameter and 10mm in annular thickness, and the boss 132 is in the shape of a circular handle with a diameter of 30mm and a height of 30mm. Through setting up top cap body 131 and bellying 132, after the material was packed into the shaping inner tube 11, carry out the preliminary pre-compaction of sample, at this moment, need put into shaping inner tube 11 with top cap 13 on to hard pressing for some top cap 13 can be impressed in shaping inner tube 11, and the bellying 132 that is the round handle form then can be convenient for operating personnel to the setting of top cap 13, thereby has improved the compaction and the drawing of patterns efficiency of sample to a certain extent.
In order to locate the forming inner cylinder 11 and the forming outer cylinder 12, the method for forming the unconfined compressive strength sample of the reclaimed water stabilized macadam provided by the embodiment further comprises the steps that a plurality of annular grooves 241 are uniformly formed in the tray 24; the center of the annular groove 241 is a boss 242; the forming inner cylinder 11 is detachably arranged on the boss 242, and the forming outer cylinder 12 is detachably arranged in the annular groove 241; a plurality of support rod preformed holes 243 are formed at the edge of the tray 24; the support rod 25 can be inserted into the support rod preformed hole 243, and the support rod 25 is arranged corresponding to the support rod preformed hole 243. Specifically, in this embodiment, the diameter of the annular groove 241 is 315mm, the depth of the annular groove 241 is 10mm, the boss 242 is a cylindrical boss 242, the diameter of the boss 242 is 180mm, the height of the boss is 10mm, the diameter of the support rod preformed hole 243 is 41mm, the boss is in a semicircular shape, four support rod preformed holes 243 are arranged, and the boss is symmetrically arranged on the tray 24 and penetrates through the whole tray 24.
The placing step S105 specifically includes: respectively pressing the pre-pressed sample forming inner cylinder 11 and the forming outer cylinder 12 placed on the boss 242 and within the annular groove 241 of the tray 24. Through setting up ring channel 241 and boss 242 for boss 242 and ring channel 241 can be arranged in respectively to shaping urceolus 11 and shaping urceolus 12, and the experimenter of being convenient for can fix a position shaping urceolus 12 and shaping inner tube 11 fast, thereby improves test efficiency. The annular groove 241 enables the tray 24 to move up and down along the support rod 25 smoothly in the process of ascending and descending, and further guarantees the reliability of the compaction and demoulding operation of the sample.
In order to improve the convenience degree of the demolding operation, the method for forming the unlimited compressive strength test sample of the reclaimed water-stabilized macadam provided by the embodiment specifically includes: and adjusting the reserved bolts 112, moving each arc-shaped flap 111 to enable the forming outer cylinder 12 to fall into the annular groove 241, and removing the top cover 13 on the sample. Similarly, in the process of demolding operation, when the forming outer cylinder 12 is removed, the forming outer cylinder 12 can just fall into the annular groove 241, so that the convenience degree of demolding operation is improved; the boss 242 is used for placing the sample which is taken off, so that the sample can accurately pass through the reserved sample pushing hole 2311 when being pushed out.
In the method for forming the unconfined compressive strength sample of the recycled water-stabilized macadam provided by the embodiment, further, in the compacting step S106 and the pushing-out step S108, the jacking is specifically performed by using an electric hydraulic jacking device. Specifically, the compaction push-out mechanism 2 includes a plurality of electro-hydraulic drive devices 21; the electro-hydraulic driving device 21 is arranged at the bottom of the forming inner cylinder 11 in a reciprocating manner in the vertical direction, and the electro-hydraulic driving device 21 is arranged corresponding to the forming inner cylinder 11 and the forming outer cylinder 12; the reserved sample pushing-out hole 2311 is provided corresponding to the electrohydraulic driving device 21.
In order to improve the working stability of the compaction and ejection mechanism 2 and facilitate the compaction of the sample, the embodiment provides a method for forming the unconfined compressive strength sample of the reclaimed water stabilized macadam, and further, the compaction and ejection mechanism 2 further comprises a base 22 and a plurality of support rods 25; the support rod 25 is detachably connected with the top plate 23; one end of the supporting rod 25 is detachably fixed on the base 22, and the other end of the supporting rod 25 is detachably connected with the top plate 23; the tray 24 is slidably provided on the support rod 25 in the vertical direction; the tray 24 is detachably fixed between the base 22 and the top plate 23 through a support rod 25, the tray 24, the base 22 and the top plate 23 are spaced, and the sample forming mechanism 1 is detachably fixed on the tray 24; the electro-hydraulic drive device 21 is disposed on the base 22 to be reciprocatingly movable in the vertical direction, and the electro-hydraulic drive device 21 is detachably disposed on the bottom of the tray 24. A reserved groove 221 is formed in the base 22; the electro-hydraulic drive device 21 is detachably disposed in the reserve groove 221. Specifically, the base 22 in this embodiment has a diameter of 800mm and a height of 400mm; the diameter of the top plate 23 is 800mm, and the thickness is 40mm; the tray 24 is a circular plate with the diameter of 720mm and the thickness of 35 mm; the diameter of the support rod 25 is 40mm, the height is 700mm, and four support rods 25 are arranged; the diameter of the prepared groove 221 provided on the base 22 is 650mm and the depth is 240mm.
The compacting step S106 specifically includes: the rotating assembly 232 is rotated until the reserved sample pushing hole 2311 is blocked, the tray 24 is jacked and moves upwards along the support rod 25, so that the sample forming inner cylinder 11 and the forming outer cylinder 12 are in contact with the rotating assembly 232, and then the upper portion of the top cover 13 is jacked to be flush with the sample forming inner cylinder 11 and the forming outer cylinder 12. Through setting up base 22 and a plurality of bracing piece 25, electro-hydraulic drive device 21 then sets up in the reservation recess 221 of base 22, a structure is simple, easily realize, bracing piece 25 has realized the joint support and the fixed effect of each part, and play the guide effect for tray 24 motion in vertical side, thereby realized the compaction of system appearance and the integrated design of drawing of patterns through above-mentioned part, and then when having simplified 2 overall structure of compaction ejecting mechanism, the compaction of system appearance and the reliability of drawing of patterns work have still been improved to a great extent, the compaction and the drawing of patterns efficiency of system appearance have further been improved.
In order to improve the reliability of the compacting and pushing operation of the sample, in the method for forming the unconfined compressive strength sample of the recycled water-stabilized macadam provided by the embodiment, further, the rotating assembly 232 comprises a rotating baffle 2321 and a rotating handle 2322; the rotating handle 2322 is detachably fixed on the rotating baffle 2321; the top plate body 231 is provided with a rotating hole 2312; the rotating handle 2322 is arranged in the rotating hole 2312 in a penetrating manner; the rotating baffle 2321 is rotatably arranged in the reserved sample pushing-out hole 2311 through the rotating handle 2322, the rotating baffle 2321 is in clearance fit with the reserved sample pushing-out hole 2311, and the rotating baffle 2321 is correspondingly arranged with the reserved sample pushing-out hole 2311; specifically, in the present embodiment, the rotating baffle 2321 is a circular plate with a diameter of 171mm and a thickness of 20mm, is located below the sample pushing hole 2311, and is welded to the rotating handle 2322; the rotating rod of the rotating handle 2322 is 60mm long and 10mm in diameter, the handle head is in a regular hexagonal prism structure and 20mm high, and the rotating rod penetrates through the rotating hole 2312; the rotation hole 2312 has a diameter of 12mm and penetrates the entire top plate 23.
The compacting step S106 specifically includes: the rotating handle 2322 is rotated to enable the rotating baffle 2321 to plug the reserved sample pushing hole 2311, the sample forming inner cylinder 11 and the forming outer cylinder 12 are jacked in the vertical direction to be in contact with the rotating baffle 2321, and then the upper portion of the top cover 13 is jacked to be flush with the sample forming inner cylinder 11 and the forming outer cylinder 12. By arranging the components such as the rotating baffle 2321 and the rotating handle 2322, the rotating baffle 2321 can rotate for 360 degrees, and before compaction operation, the reserved push-out sample hole 2311 on the top plate 23 needs to be blocked by the rotating baffle 2321; then, the electro-hydraulic driving device 21 is operated, and the electro-hydraulic driving device 21 is lifted to the rotating baffle 2321 which is pushed to the top plate 23 by the forming inner cylinder 11 and the forming outer cylinder 12; it can be seen that, with the above arrangement, the sample can be compacted and pushed out by rotating the rotating baffle 2321, so that the sample compaction and pushing out are more convenient, and the reliability of the sample compaction and pushing out operation can be effectively improved.
In order to improve the forming quality of the prepared sample, the forming method of the unconfined compressive strength sample of the reclaimed water stabilized macadam provided in this embodiment further includes the step S103 of charging: and (3) padding filter paper on the cushion block 14, sleeving the forming inner cylinder 11 on the cushion block 14, and pouring the weighed gravel test material into the forming inner cylinder 11 for multiple times. By pouring the weighed rubble test materials into the forming inner cylinder 11 for multiple times, compared with pouring all the rubble test materials once, the filling degree of the rubble test materials can be ensured, and therefore the forming quality of subsequent samples is ensured.
In conclusion, according to the method for forming the unconfined compressive strength sample of the reclaimed water-stabilized macadam, provided by the invention, a plurality of samples can be manufactured at one time by arranging the sample forming mechanism and the compaction pushing-out mechanism, so that the sample manufacturing time is greatly shortened, a group of samples are formed at one time, and the forming pressure and the forming process are the same, so that the integrity of each sample is ensured, the difference among the samples is reduced, and the problem of repeated sample supplement is avoided; the convenience degree of sample compaction shaping and demolding operation is improved to a great extent, so that the difficulty of sample compaction shaping and demolding operation is reduced, the sample preparation efficiency is improved, the integration of the compaction shaping and demolding of the sample is realized, and the compaction and demolding efficiency of the sample is greatly improved while the compaction and demolding quality of the sample is ensured.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A method for forming unconfined compressive strength samples of reclaimed water stabilized macadam comprises a forming die consisting of a plurality of sample forming mechanisms and a compaction pushing mechanism; the sample forming mechanism is detachably fixed on the compaction pushing-out mechanism;
the sample forming mechanism comprises a forming inner cylinder, a forming outer cylinder, a top cover and a cushion block; the forming inner cylinder and the forming outer cylinder are both in a cylindrical structure with openings at two ends, the forming inner cylinder is coaxially arranged in the forming outer cylinder, and the forming inner cylinder is detachably fixed in the forming outer cylinder; the top cover is detachably fixed at the top of the forming inner cylinder; the cushion block is detachably fixed at the bottom of the forming inner cylinder;
the compaction push-out mechanism comprises a tray and a top plate; the tray can reciprocate in the vertical direction, and the sample forming mechanism is detachably arranged on the tray; a space is reserved between the top plate and the tray in the vertical direction; the top plate comprises a top plate body and a plurality of rotating assemblies; the top plate body is provided with a plurality of reserved push-out sample holes, and the rotating assembly is rotatably arranged on the top plate body;
a charging step: padding filter paper on a cushion block, sleeving the forming inner cylinder on the cushion block, and pouring the weighed stone breaking test material into the forming inner cylinder;
pre-pressing: after the loading is finished, covering filter paper on the surface of the stone crushing test material, and putting the top cover into the forming inner cylinder for prepressing;
a placing step: respectively placing the pre-pressed forming inner cylinder and the pre-pressed forming outer cylinder at preset positions of a tray;
compacting: rotating the rotating assembly until the reserved push-out sample hole is blocked, jacking the forming inner cylinder and the forming outer cylinder in the vertical direction to enable the forming inner cylinder and the forming outer cylinder to be in contact with the rotating assembly, and then jacking until the upper part of the top cover is flush with the forming inner cylinder and the forming outer cylinder;
demoulding: adjusting the reserved bolt to adjust the position of the forming inner cylinder, enabling the forming outer cylinder to fall into the tray, and taking down the top cover;
a push-out step: rotating the rotating assembly until the reserved push-out sample hole is exposed, jacking the sample in the vertical direction until the sample is completely pushed out of the reserved push-out sample hole, and taking out the sample;
the forming inner cylinder is formed by combining a plurality of arc-shaped petals, and the arc-shaped petals are detachably connected;
before the charging step, the method further comprises an assembling step: a plurality of detachable arc petals are assembled into a closed forming inner cylinder, wherein a reserved bolt with threads is arranged on the outer wall of each arc petal.
2. The method for forming unconfined compressive strength test specimen of reclaimed water stabilized macadam as claimed in claim 1, further comprising a fixing step between the assembling step and the loading step: and screwing the reserved bolt on the outer wall of the forming inner cylinder until the reserved bolt is fixedly connected with the forming outer cylinder.
3. The method for forming the unconfined compressive strength test sample of the reclaimed water stabilized macadam as claimed in claim 1, wherein the step of demoulding comprises the following steps: and adjusting the reserved bolts, moving each arc-shaped petal to enable the forming outer cylinder to fall into the tray, and taking down the top cover.
4. The method for forming an unconfined compressive strength test specimen of the reclaimed water stabilized macadam as claimed in claim 1, wherein a plurality of annular grooves are uniformly formed on the tray; the center of the annular groove is provided with a boss; the forming inner cylinder is detachably arranged on the boss, and the forming outer cylinder is detachably arranged in the annular groove;
the placing step specifically comprises: and respectively placing the pre-pressed sample forming inner cylinder and the pre-pressed sample forming outer cylinder on the lug boss and in the annular groove of the tray.
5. The method for forming the unconfined compressive strength test sample of the reclaimed water stabilized macadam as claimed in claim 4, wherein the step of demoulding comprises the following steps: and adjusting the reserved bolts, moving each arc-shaped flap to enable the forming outer cylinder to fall into the annular groove, and taking down the top cover on the sample.
6. The method for forming the unconfined compressive strength test sample of the reclaimed water stabilized macadam according to claim 1, wherein in the compacting step and the pushing step, the jacking is performed by an electric hydraulic jacking device.
7. The method for forming an unconfined compressive strength test specimen of the reclaimed water stabilized macadam according to claim 1, wherein the compaction pushing-out mechanism further comprises a plurality of support rods; the supporting rod is detachably connected with the top plate; the tray is slidably arranged on the supporting rod in the vertical direction;
the compacting step specifically comprises: rotating the rotating assembly until plugging up and reserving and pushing out the sample hole, jacking the tray and upwards moving along the supporting rod, making the sample forming inner cylinder, the forming outer cylinder contact with the rotating assembly, and then jacking to the upper part of the top cover and the parallel and level of the sample forming inner cylinder and the forming outer cylinder.
8. The method for forming unconfined compressive strength test specimen of recycled water stabilized macadam as claimed in claim 1, wherein the rotating assembly comprises a rotating baffle plate and a rotating handle; the rotating handle is detachably fixed on the rotating baffle; the top plate body is provided with a rotating hole; the rotating handle is arranged in the rotating hole in a penetrating way; the rotary baffle is rotatably arranged in the reserved push-out sample hole through the rotary handle, the rotary baffle is in clearance fit with the reserved push-out sample hole, and the rotary baffle is arranged corresponding to the reserved push-out sample hole;
the compacting step specifically comprises: and rotating the rotating handle to enable the rotating baffle to plug the reserved pushed sample hole, jacking the sample forming inner cylinder and the forming outer cylinder in the vertical direction to enable the sample forming inner cylinder and the forming outer cylinder to be in contact with the rotating baffle, and then jacking the sample forming inner cylinder and the forming outer cylinder to the upper part of the top cover to be flush with the sample forming inner cylinder and the forming outer cylinder.
9. The method for forming the unconfined compressive strength test sample of the reclaimed water stabilized macadam as claimed in claim 1, wherein the charging step comprises the following steps: and (3) padding filter paper on the cushion block, sleeving the forming inner cylinder on the cushion block, and pouring the weighed stone breaking test materials into the forming inner cylinder for multiple times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011193319.2A CN112485078B (en) | 2020-10-30 | 2020-10-30 | Forming method of unconfined compressive strength sample of reclaimed water stabilized macadam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011193319.2A CN112485078B (en) | 2020-10-30 | 2020-10-30 | Forming method of unconfined compressive strength sample of reclaimed water stabilized macadam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112485078A CN112485078A (en) | 2021-03-12 |
| CN112485078B true CN112485078B (en) | 2023-04-07 |
Family
ID=74927966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011193319.2A Active CN112485078B (en) | 2020-10-30 | 2020-10-30 | Forming method of unconfined compressive strength sample of reclaimed water stabilized macadam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112485078B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112781968B (en) * | 2021-04-12 | 2021-06-25 | 西南交通大学 | Micro-motion abrasion test sample forming device among open-graded water distribution and stable gravel particles |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020029606A1 (en) * | 2019-03-15 | 2020-02-13 | 山东科技大学 | Controllable joint-type rock-like casting mould apparatus and usage method |
| CN111024467A (en) * | 2019-12-20 | 2020-04-17 | 河海大学 | Remolded soil batch sample preparation device and sample preparation method |
| CN211205977U (en) * | 2019-11-21 | 2020-08-07 | 沈阳工业大学 | Unconfined compressive strength test workpiece and demolding integrated device |
| CN211415670U (en) * | 2019-09-16 | 2020-09-04 | 陈振荣 | Underground concrete prefabricating mechanism for vertical shaft jacking pipe |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842032B (en) * | 2016-05-10 | 2019-03-05 | 广东工业大学 | A kind of soil sample molding and stripper apparatus |
| CN109142082A (en) * | 2018-08-29 | 2019-01-04 | 陈正汉 | A kind of high suction triaxial apparatus of unsaturated soil high temperature and pressure and sampling die |
| CN214894379U (en) * | 2020-10-29 | 2021-11-26 | 山东科技大学 | Rock soil test piece compaction mould capable of conveniently demoulding |
| CN215004604U (en) * | 2020-11-02 | 2021-12-03 | 哈尔滨理工大学 | Double-mold-method sample preparation and demolding device for unsaturated soil triaxial experiment |
| CN214621982U (en) * | 2021-04-19 | 2021-11-05 | 东华理工大学 | Triaxial shedder |
| CN113504097A (en) * | 2021-08-06 | 2021-10-15 | 东华理工大学 | Geotechnical test shedder |
-
2020
- 2020-10-30 CN CN202011193319.2A patent/CN112485078B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020029606A1 (en) * | 2019-03-15 | 2020-02-13 | 山东科技大学 | Controllable joint-type rock-like casting mould apparatus and usage method |
| CN211415670U (en) * | 2019-09-16 | 2020-09-04 | 陈振荣 | Underground concrete prefabricating mechanism for vertical shaft jacking pipe |
| CN211205977U (en) * | 2019-11-21 | 2020-08-07 | 沈阳工业大学 | Unconfined compressive strength test workpiece and demolding integrated device |
| CN111024467A (en) * | 2019-12-20 | 2020-04-17 | 河海大学 | Remolded soil batch sample preparation device and sample preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112485078A (en) | 2021-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104198254B (en) | Controlling density formula geotechnique's three axle sample preparation devices | |
| CN111152356B (en) | Precast concrete spare and manufacturing installation thereof | |
| CN112485078B (en) | Forming method of unconfined compressive strength sample of reclaimed water stabilized macadam | |
| CN213813090U (en) | Reclaimed water stabilized macadam unconfined compressive strength sample forming die | |
| CN112677289A (en) | Preparation method of recycled concrete perforated brick | |
| CN114000633A (en) | Anti-floating structure of cast-in-place concrete hollow floor and construction method thereof | |
| CN104532831A (en) | Large-diameter hollow screw pile and manufacturing method | |
| CN112525657A (en) | Reclaimed water stabilized macadam unconfined compressive strength sample forming die | |
| CN217891287U (en) | Concrete material pushing and flattening machine for prefabricated part production | |
| CN214687124U (en) | Assembled building forming die | |
| CN114062072A (en) | A hollow cylinder remolded appearance is hit real ware for saturation | |
| CN212807790U (en) | Test mould for detecting cement mortar strength | |
| CN214266076U (en) | Make things convenient for concrete prefabricated part mould of drawing of patterns | |
| CN207997393U (en) | A kind of ceramic powder moulding press | |
| CN204101347U (en) | A kind of controlling density formula geotechnique three axle sample preparation devices | |
| CN113172733A (en) | Assembled building wallboard compression molding equipment | |
| CN219484130U (en) | Double-layer shaping machine | |
| CN220380847U (en) | Geotechnical compaction device convenient for demolding | |
| CN109049322A (en) | A kind of concrete prefabricated pipe mold easy to use | |
| CN112936565A (en) | Pouring assembly of prefabricated tower cylinder and pouring device of prefabricated tower cylinder | |
| CN214081990U (en) | Mold for preparing light porous ceramic | |
| CN220903654U (en) | Forming press convenient to change mould | |
| CN219060027U (en) | Assembled precast pile suitable for bored concrete pile construction | |
| CN219820118U (en) | Injection molding device for producing concrete drain pipe | |
| CN217597353U (en) | Concrete inspection shaft production facility |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |