CN221985358U

CN221985358U - A test piece mold

Info

Publication number: CN221985358U
Application number: CN202323538909.6U
Authority: CN
Inventors: 王佩勋; 杜航; 常艳
Original assignee: Sichuan Tieruixin Engineering Testing Technology Co ltd
Current assignee: Sichuan Tieruixin Engineering Testing Technology Co ltd
Priority date: 2023-12-25
Filing date: 2023-12-25
Publication date: 2024-11-12
Anticipated expiration: 2033-12-25

Abstract

A specimen mold includes a lower shell, which has a rectangular structure. A rectangular frame is provided at the upper end of the lower shell. The rectangular frame and the lower shell are connected and fixed by a pair of connecting mechanisms. The lower shell can be used as a casting mold for one material, such as concrete, and a release agent can be coated on the inner wall during casting. During preparation, the solidified concrete needs to fill the entire lower shell, and the rectangular frame can provide a mold for the molding of another material. In this way, the release agent can be prevented from entering between the two materials and affecting the bonding strength between the two.

Description

Test piece mould

Technical Field

The utility model relates to the technical field of test piece preparation, in particular to a test piece die.

Background

When two kinds of concrete with different components and related building materials are prepared, in order to obtain the bonding strength, a test piece is required to be prepared in a pouring mode, and then the bonding strength between the two concrete with different components is obtained through the operation such as the bending resistance test. When the test piece is prepared, the release agent needs to be coated on the inner wall of the die, then the building materials are poured, and after one of the building materials is poured, the building materials are cured for 24 hours, then the second building material is poured, when the first building material is cured, the release agent easily enters the surface of the first material, the entering of the release agent can affect the bonding strength between the two materials, the occurrence of the situation can be avoided by precisely controlling the height of the release agent, however, the operation is basically not found to achieve the expected effect in the actual preparation, because the concrete is in a fluid state when being poured, the height is obviously reduced along with the hardening of the concrete, and the reduced height has the characteristic of difficult prediction, so the preparation of the test piece is greatly puzzled.

Disclosure of utility model

The utility model provides a test piece die, which solves the defects in the prior art, can avoid the influence of a release agent on the bonding strength between two pouring materials, and has strong practicability.

In order to achieve the object of the present utility model, the following techniques are proposed:

The utility model provides a test piece mould, including the inferior valve, the inferior valve is rectangular structure, the upper end of inferior valve is equipped with the rectangle frame, connect fixedly through a pair of coupling mechanism between rectangle frame and the inferior valve, the inferior valve can be used to one of them material like concreting mould, and can coat release agent on the inner wall when pouring, and the concrete after need solidifying when preparing can fill whole inferior valve, and the rectangle frame can provide the mould for the shaping of another material, can avoid release agent to get into between two materials and influence the joint strength between the two through this kind of mode.

Further, in order to facilitate the transfer of the lower case, handles are provided at both ends of the lower case, respectively.

Further, in order to improve the connection effect between the lower shell and the rectangular frame, a lower annular plate is arranged at the upper end of the lower shell, an upper annular plate is arranged at the lower end of the rectangular frame, four insertion holes are respectively formed in two ends of the lower annular plate, four downward extending columns are respectively arranged at two ends of the upper annular plate, and the downward extending columns penetrate through the insertion holes. The contact area between the lower shell and the rectangular frame is increased through the upper annular plate and the lower annular plate, so that the stability between the lower shell and the rectangular frame is remarkably improved. And can improve the effect after the connection through stretching down the post.

Further, an upper extension frame is arranged on the lower shell, a sealing ring groove is formed in the inner wall of the lower end of the rectangular frame, and the upper extension frame penetrates through the sealing ring groove. The arrangement of the upper extension frame and the sealing ring groove ensures that the problem of leakage of the second material caused by the existence of a gap between the upper extension frame and the sealing ring groove is avoided.

Further, coupling mechanism includes the lock screw of spiro union in last crown plate one end, and lock screw's below is equipped with the fly leaf, has seted up the U type groove on the fly leaf, and lock screw wears in the U type inslot, and the outside end of fly leaf is equipped with the outer end plate, and the inner wall of outer end plate is equipped with interior inserted bar, has seted up right trapezoid hole on the downleg, and the lower wall in right trapezoid hole is the inclined plane, and is located the lower wall incline direction unanimity in right trapezoid hole of same end, and interior inserted bar wears in right trapezoid hole, and acts on the inclined plane in right trapezoid hole. When the lower shell is connected, the downward extending column can be fixed in a mode of inwards moving the inward inserting rod, so that the combination effect between the lower shell and the rectangular frame is further improved.

Further, the inner side end of the inner inserted link is provided with an inclined wall, the inclined wall acts on the inclined plane, and the inclined wall is convenient to fix the downward extending column.

The technical scheme has the advantages that:

The utility model can avoid the influence of the release agent on the bonding strength between two materials.

Drawings

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail with reference to the accompanying drawings.

Fig. 1 shows a perspective view of one embodiment.

Fig. 2 shows a second perspective view of one embodiment.

Fig. 3 shows a three-dimensional block diagram of one embodiment.

Fig. 4 shows a perspective view of a fourth embodiment.

Detailed Description

As shown in fig. 1 to 4, a test piece mold comprises a lower shell 1, and handles 10 are respectively arranged at two ends of the lower shell 1. The lower shell 1 is of a rectangular structure, a rectangular frame 2 is arranged at the upper end of the lower shell 1, and the rectangular frame 2 and the lower shell 1 are fixedly connected through a pair of connecting mechanisms. The upper end of the lower shell 1 is provided with a lower annular plate 11, the lower end of the rectangular frame 2 is provided with an upper annular plate 20, four jacks 13 are respectively formed at two ends of the lower annular plate 11, four downward extending columns 21 are respectively arranged at two ends of the upper annular plate 20, and the downward extending columns 21 penetrate through the jacks 13. An upper extension frame 12 is arranged on the lower shell 1, a sealing ring groove is formed in the inner wall of the lower end of the rectangular frame 2, and the upper extension frame 12 penetrates through the sealing ring groove.

The connecting mechanism comprises a locking screw 32 which is in threaded connection with one end of the upper annular plate 20, a movable plate 30 is arranged below the locking screw 32, a U-shaped groove 31 is formed in the movable plate 30, the locking screw 32 penetrates through the U-shaped groove 31, an outer end plate 3 is arranged at the outer side end of the movable plate 30, an inner inserting rod 33 is arranged on the inner wall of the outer end plate 3, a right trapezoid hole 22 is formed in the downward extending column 21, the lower wall of the right trapezoid hole 22 is an inclined surface, the inclination directions of the lower walls of the right trapezoid holes 22 at the same end are consistent, the inner inserting rod 33 penetrates through the right trapezoid hole 22 and acts on the inclined surface of the right trapezoid hole 22, an inclined wall 35 is arranged at the inner side end of the inner inserting rod 33, and the inclined wall 35 acts on the inclined surface.

In this example, the first material was selected from concrete and the second material was selected from micro-expanding slurry during operation.

The specific implementation steps are as follows:

and 1, coating a layer of release agent on the inner wall of the lower shell 1.

And 2, vibrating the concrete poured in the lower shell 1 on a vibrating table for compaction for 10s. The thickness of the concrete is 5+/-0.5 cm, the release agent or the release grease material on the surface is scraped off, then the concrete is placed in a curing room for 24 hours, the surface is covered with a winding film, 6 blocks of the winding film are covered on each group, a combined test piece is preformed, a standard concrete test piece filled with a die is formed,

Step 3, curing for 24 hours, stripping the winding film, and performing no treatment on the concrete surface;

step 4, the rectangular frame 2 is set on the lower case 1, and the lower ring plate 11 and the upper ring plate 20 are brought into close contact by moving the insert rod 33 inward, and a release agent is applied in advance in the rectangular frame 2.

And 5, stirring the micro-expansion grouting material according to a specified water-material ratio, stirring for 3min, slowly pouring the uniformly stirred micro-expansion grouting material into a rectangular frame 2 of a combined test piece filled with half concrete, automatically leveling, scraping off excessive mortar, putting into a standard curing room, and demolding for 24 h.

And 5, after demolding, transferring the product into a standard curing room for curing, and continuously curing for 6d or 27d, wherein the product cannot be soaked in water or directly sprayed with water, and respectively testing the 7d flexural strength and the 28d flexural strength.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the utility model, and it will be apparent to those skilled in the art that various modifications and variations can be made in the present utility model without departing from the spirit and scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The utility model provides a test piece mould, its characterized in that includes inferior valve (1), inferior valve (1) are rectangular structure, and the upper end of inferior valve (1) is equipped with rectangle frame (2), connects fixedly through a pair of coupling mechanism between rectangle frame (2) and inferior valve (1).

2. Test piece mould according to claim 1, characterized in that the two ends of the lower shell (1) are provided with handles (10) respectively.

3. The test piece mold according to claim 1, characterized in that the upper end of the lower shell (1) is provided with a lower annular plate (11), the lower end of the rectangular frame (2) is provided with an upper annular plate (20), four insertion holes (13) are respectively formed in two ends of the lower annular plate (11), four downward extending columns (21) are respectively formed in two ends of the upper annular plate (20), and the downward extending columns (21) penetrate through the insertion holes (13).

4. The test piece mold according to claim 1, wherein an upper extension frame (12) is arranged on the lower shell (1), a sealing ring groove is formed in the inner wall of the lower end of the rectangular frame (2), and the upper extension frame (12) penetrates through the sealing ring groove.

5. The test piece mold according to claim 2, wherein the connecting mechanism comprises a locking screw (32) screwed at one end of the upper ring plate (20), a movable plate (30) is arranged below the locking screw (32), a U-shaped groove (31) is formed in the movable plate (30), the locking screw (32) penetrates through the U-shaped groove (31), an outer end plate (3) is arranged at the outer side end of the movable plate (30), an inner inserting rod (33) is arranged on the inner wall of the outer end plate (3), a right trapezoid hole (22) is formed in the downward extending column (21), the lower wall of the right trapezoid hole (22) is an inclined surface, the inclined directions of the lower walls of the right trapezoid holes (22) positioned at the same end are consistent, and the inner inserting rod (33) penetrates through the right trapezoid hole (22) and acts on the inclined surface of the right trapezoid hole (22).

6. A test piece mould according to claim 5, characterized in that the inner end of the inner insert rod (33) is provided with a sloping wall (35), the sloping wall (35) acting on the sloping surface.