JP2011183558A - Form for concrete test piece - Google Patents

Abstract

The present invention makes it easy to assemble, disassemble, and clean, and eliminates the need for capping.
SOLUTION: A cylindrical cylindrical portion 2 into which concrete C is supplied, a pair of lid portions 3 detachably provided at both axial ends of the cylindrical portion 2, and a pair of lid portions 3 and a rubber band (fixing tool) 5 for fixing the cylindrical portion 2 to each other. The cylindrical portion 2 is formed with a tapered surface (first tapered surface) 6 whose diameter is reduced toward the tip of the cylindrical portion 2 on the end portions 2a and 2b of the outer peripheral surface. The lid 3 includes a plate member 7 that closes the openings of the ends 2 a and 2 b of the cylindrical portion 2, and a cylindrical side member 8 that protrudes from the plate member 7. The side member 8 is formed with a tapered surface (second tapered surface) 9 whose diameter is increased in the protruding direction from the plate member 7 side on the inner peripheral surface, and the cylindrical portion 2 faces the tapered surface 6 side. The member 8 is brought into surface contact with the tapered surface 9 and fitted into the lid 3.
[Selection] Figure 2

Description

  The present invention relates to a mold for a concrete test piece, and more particularly, to a mold for producing a concrete test piece used when the concrete strength is simply confirmed at a site where concrete is placed.

Conventionally, as a mold for a concrete test piece, a cylindrical portion is composed of two semi-cylindrical members, and these semi-cylindrical members can be fixed by fastening means such as bolts (for example, patents). Reference 1). In addition, lightweight and disposable concrete test piece molds such as summit cans are also used. When manufacturing concrete test pieces using these concrete test piece molds, it is necessary to perform capping to finish the top end of the loading surface flat with cement paste or the like.
On the other hand, as a concrete test piece mold that does not require capping, a side-filled type is used in which the axial direction of the cylindrical portion is set as the horizontal direction. The loading surface can be finished smoothly by adopting the horizontal packing type.

JP-A-10-78384

However, the concrete test piece mold having a cylindrical portion made up of two semi-cylindrical members and the side-filled concrete test piece mold of Patent Document 1 have a complicated structure, and are easy to assemble, disassemble and clean. There was a problem that it took time and was difficult to handle.
Further, disposable concrete test piece molds such as summit cans are easy to handle because they do not need to be cleaned, but waste increases because they are disposable.
Also, if capping is required when producing a concrete test piece, labor and cost are required for capping, which increases the production cost of the concrete test piece and takes time.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a concrete test piece form that is easy to assemble, disassemble, and clean and that can eliminate capping.

  In order to achieve the above object, a concrete test piece mold according to the present invention is detachably provided at both a cylindrical cylindrical portion to which concrete is supplied and both axial ends of the cylindrical portion. A pair of lids, and a fixture for fixing the state in which the pair of lids are mounted on the cylindrical portion, and the cylindrical portions are respectively provided on both ends of the outer peripheral surface. A first tapered surface having a diameter that decreases toward the tip of the cylindrical portion, and the lid portion projects from the plate member to close the opening at the end of the cylindrical portion, and the cylindrical portion The side member is formed with a second tapered surface having a diameter that increases in the protruding direction from the plate member side on the inner peripheral surface. The cylindrical portion has the first tapered surface as the second tapered surface. Brought into surface contact, characterized in that fitted to the lid part.

In the present invention, the cylindrical portion is formed with a first taper surface whose diameter dimension decreases toward the tip of the cylindrical portion on both end sides of the outer peripheral surface, and the lid portion is the end of the cylindrical portion. And a cylindrical side member that protrudes from the plate member and covers the end side of the outer peripheral surface of the cylindrical portion. The side member has an inner peripheral surface in the protruding direction from the plate member side. A second tapered surface having a larger radial dimension is formed, and the cylindrical portion is easily cylindrical by fitting the lid portion with the first tapered surface in surface contact with the second tapered surface. Since the part can be fitted to the lid part and the work for removing it is easy to perform, it is easy to assemble and disassemble the concrete test piece mold.
Further, the first tapered surface and the second tapered surface are in surface contact with each other so that the cylindrical portion and the lid member are fitted, and the state in which the lid portion is mounted on the cylindrical portion is held by the fixture. Therefore, the concrete supplied to the inside of the cylindrical portion does not leak. As a result, the concrete test piece mold filled with concrete can be placed sideways, so that capping is not required.
Moreover, since the concrete test piece mold is divided into a cylindrical portion and a lid portion, it can be easily cleaned.

Moreover, in the concrete test piece mold according to the present invention, the fixing device is wound around a pair of the lid portions mounted on the cylindrical portion, and presses the lid portion toward the cylindrical portion. And it is preferable that the said cover part is provided with a notch part in the position where the said rubber band contact | abuts.
In the present invention, the fixing tool is a rubber band that is wound around a pair of lid portions mounted on the cylindrical portion and presses the lid portion toward the cylindrical portion, and the lid portion is notched in a position where the rubber band contacts. By providing the portion, the position of the rubber band is stabilized, and the lid portion can be attached to the cylindrical portion in a stable state.

  According to the present invention, it is easy to assemble, disassemble, and clean, and can eliminate capping. Therefore, it is possible to reduce labor and cost for manufacturing a concrete test piece and shorten manufacturing time. .

(A) is a front view and rear view showing an example of a concrete test piece mold according to an embodiment of the present invention, (b) is a side view, and (c) is a top view and bottom view. (A) is the sectional view on the AA line of FIG.1 (b), (b) is an enlarged view of (a). It is a figure explaining the process of the manufacturing method of a concrete test piece. It is a figure explaining the process of the manufacturing method of the concrete test piece following the process of FIG.

Hereinafter, a concrete test piece mold according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4.
A concrete test piece mold 1 according to the present embodiment shown in FIGS. 1 and 2 is a mold for simply manufacturing a concrete test piece. A concrete test piece mold 1 according to the present embodiment includes a cylindrical cylindrical portion 2 into which concrete C is supplied, and a lid portion 3 that can be attached to and detached from both axial ends 2a and 2b of the cylindrical portion 2. The handle 4 is attached to the lid 3 and a ring-shaped rubber band 5 having a predetermined width W1 hung on the handle 4.

As shown in FIGS. 2 (a) and 2 (b), the cylindrical portion 2 has a tapered surface 6 (see FIG. 2 (b)) whose diameter dimension decreases toward the tip 2c on both end portions 2a and 2b side of the outer peripheral surface. )) Is formed.
The lid 3 is a disc-shaped plate member 7 that closes the opening at the end of the cylindrical portion 2, and is connected to the plate member 7 and protrudes from the plate member 7 to the end 2 a and 2 b side of the outer peripheral surface of the cylindrical portion 2. It is comprised from the cylindrical side member 8 which covers. On the inner peripheral surface of the side member 8, a tapered surface 9 (see FIG. 2 (b)) whose diameter dimension increases from the plate member 7 side in the protruding direction is formed. The tapered surface 6 and the tapered surface 9 can be fitted in surface contact.
The cylindrical portion 2 and the lid portion 3 are formed by processing a steel plate.

  As shown in FIGS. 1 and 2, the handle 4 is a substantially U-shaped member that protrudes from the plate member 7 of the lid portion 3 and is connected to the plate member 7 at both ends, and is in the axial direction of the cylindrical portion 2. A notch 10 is formed at the end. The notch 10 is formed to have a width W2 that is slightly larger than the width W1 of the rubber band 5, and the rubber band 5 is hung when the concrete test piece is manufactured.

Next, a concrete test piece manufacturing method using the above-described concrete test piece mold will be described with reference to the drawings.
First, as shown in FIG. 3A, the lid 3 is attached to one end 2b of the cylindrical portion 2, and the cylindrical portion 2 and the lid 3 are installed so that the lid 3 is on the lower side. At this time, the tapered surface 6 of the cylindrical portion 2 shown in FIG. 2B and the tapered surface 9 of the side member 8 of the lid portion 3 are brought into surface contact, and the cylindrical portion 2 is fitted to the lid portion 3.
By forming the tapered surfaces 6 and 9 on the side member 8 of the cylindrical portion 2 and the lid portion 3, the cylindrical portion 2 and the lid portion 3 can be easily mounted.

Subsequently, as shown in FIG. 3B, the concrete C is divided into two layers and packed in the cylindrical portion 2, filled with a stick, and the top end is leveled.
And the cover part 3 is attached to the other edge part 2a side located above the cylindrical part 2, as shown in FIG.3 (c). Similarly to the lower side of the cylindrical part 2, the tapered surface 6 of the cylindrical part 2 and the tapered surface 9 of the side member 8 of the lid part 3 shown in FIG. Fit. At this time, the directions of the handles 4 of the upper and lower lid portions 3 are aligned.
Subsequently, as shown in FIG. 3 (d), the rubber band 5 is hung on the notch portions 10 of the upper and lower handles 4, and the cylindrical portion 2 and the lid portions 3 on both sides thereof are brought into close contact with each other.

  Subsequently, as shown in FIG. 4A, the concrete test piece mold 1 filled with the concrete C is turned down so that the axial direction thereof is horizontal, and the plate member 7 of the lid 3 is moved by a wooden hammer or the like. To move the air between the plate member 7 and the concrete C upward. By this work, the end surface of the hardened concrete test piece C1 becomes smooth.

After the concrete C is hardened, the rubber band 5 is removed as shown in FIG. 4 (b), and the lid portions 3 attached to both ends 2a and 2b of the cylindrical portion 2 are removed as shown in FIG. 4 (c). remove. And as shown in FIG.4 (d), the concrete test piece C1 is manufactured by taking out from the cylindrical part 2 the concrete test piece C1 formed when the concrete C hardened | cured.
After the concrete test piece C1 is taken out from the cylindrical portion 2, the cylindrical portion 2 and the lid portion 3 are cleaned.

Next, the operation of the above-described concrete test piece mold will be described with reference to the drawings.
In the concrete test piece mold 1 according to the present embodiment, the tapered surface 6 is formed on the end portions 2 a and 2 b of the outer peripheral surface of the cylindrical portion 2, and the tapered surface 9 is formed on the inner peripheral surface of the side member 8 of the lid portion 3. The cylindrical portion 2 can be easily attached to and detached from the lid portion 3, and the tapered surface 6 of the cylindrical portion 2 and the tapered surface 9 of the lid portion 3 are brought into close contact with each other to eliminate a gap. it can.
Further, by fixing the cylindrical portion 2 and the lid portion 3 of the concrete test piece mold 1 filled with the concrete C with the rubber band 5, the lid portion 3 is pressed against the cylindrical portion 2 and the cylindrical portion 2 and the lid Since there is no gap between the portion 3 and the concrete test piece mold 1, it is possible to prevent the concrete C from leaking from the inside to the outside. Then, the concrete test piece mold 1 filled with the concrete C can be installed sideways. The filled concrete C is in contact with the plate member 7 at both ends, and the air between the plate member 7 and air. Moves upward, so that both end faces are finished smoothly and there is no need for capping as in the prior art.
Moreover, since the concrete test piece mold 1 is composed of the cylindrical portion 2 and the lid portion 3 having a simple shape, it is easy to clean. And since the concrete test piece mold 1 can be used repeatedly, the amount of waste can be reduced as compared with the conventional disposable concrete test piece mold.

  The concrete test piece mold 1 according to the present embodiment is easy to assemble, disassemble, and clean, and can eliminate the need for capping, thereby reducing the labor and cost for producing the concrete test piece C1. At the same time, the production time can be shortened.

As mentioned above, although embodiment of the form 1 for concrete test pieces by this invention was described, this invention is not limited to said embodiment, In the range which does not deviate from the meaning, it can change suitably.
For example, in the embodiment described above, the handle 4 is provided and the notch 10 is formed in the handle 4, but the notch 10 is provided in the plate member 7 of the lid 3 without providing the handle 4. The rubber band 5 may be hung on the notch 10.
In the above-described embodiment, the rubber band 5 is used as a fixing tool, but the cylindrical portion 2 and the lid portion 3 may be fixed using a clamp or the like instead of the rubber band 5.

1 Form for concrete test piece 2 Cylindrical part 3 Lid part 5 Rubber band (fixing member)
6 Tapered surface (first tapered surface)
7 Plate member 8 Side member 9 Tapered surface (second tapered surface)
10 Notch C Concrete C1 Concrete test piece

Claims (2)

A cylindrical cylindrical part to which concrete is supplied, and
A pair of lid portions detachably provided at both ends of the cylindrical portion in the axial direction;
A fixing tool for fixing the state in which the pair of lid portions are mounted on the cylindrical portion,
The cylindrical portion is formed with a first tapered surface whose diameter dimension is reduced toward the tip of the cylindrical portion on both end sides of the outer peripheral surface, respectively.
The lid portion includes a plate member that closes the opening at the end portion of the cylindrical portion, and a cylindrical side member that protrudes from the plate member and covers the end portion side of the outer peripheral surface of the cylindrical portion. Is formed with a second taper surface having a radial dimension that increases in the protruding direction from the plate member side on the inner peripheral surface, and the cylindrical portion defines the first taper surface as the second taper surface. A concrete test piece mold, which is brought into surface contact with the lid.   The fixing device is a rubber band that is wound around a pair of lid portions mounted on the cylindrical portion and presses the lid portion toward the cylindrical portion, and the lid portion is a position where the rubber band abuts. The concrete test piece mold according to claim 1, further comprising a notch.

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