JP6469602B2 - Specimen form for concrete bending strength test - Google Patents

Specimen form for concrete bending strength test Download PDF

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JP6469602B2
JP6469602B2 JP2016022478A JP2016022478A JP6469602B2 JP 6469602 B2 JP6469602 B2 JP 6469602B2 JP 2016022478 A JP2016022478 A JP 2016022478A JP 2016022478 A JP2016022478 A JP 2016022478A JP 6469602 B2 JP6469602 B2 JP 6469602B2
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野口　義隆
義隆 野口
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Description

本発明はコンクリートの曲げ強度試験用供試体型枠に関する。   The present invention relates to a specimen mold for a concrete bending strength test.

コンクリートの強度試験の一つに曲げ強度試験があり、日本工業規格：ＪＩＳ Ａ １１３２に供試体の作り方が規定されている。曲げ試験用の供試体は、許容寸法以内の直方体状の型枠を用いて成型することが行われている。
曲げ試験用の供試体の型枠は、鋳物製の型枠とされ、底板上に２枚の側板と２枚の端板を配置して８箇所のボルト、ナットで締め付けて組み立てる構造とされている。型枠は、上部の開口からコンクリートを充填して供試体を成型した後、分解脱型して供試体を取り出すようにするものであった。
また、特許文献１には、日本工業規格のコンクリート強度試験とは異なり、簡便に試験を行う場合の供試体用の型枠が提案されている。 One of the strength tests of concrete is a bending strength test, and Japanese Industrial Standards: JIS A 1132 specifies how to make specimens. A specimen for a bending test is molded using a rectangular parallelepiped mold within an allowable dimension.
The mold of the test specimen for the bending test is a casting mold, and has a structure in which two side plates and two end plates are arranged on the bottom plate and tightened with eight bolts and nuts. Yes. The mold was designed to take out the specimen by demolding after filling the concrete from the upper opening and molding the specimen.
In addition, unlike Japanese Industrial Standard concrete strength test, Patent Document 1 proposes a form for a specimen for simple testing.

特開２００８−１２８８５３号公報JP 2008-128853 A

鋳物製の型枠では、８箇所をボルト、ナットで締め付けて組み立てる構造のため、許容寸法に合わせて組み立てるには、慎重さが要求され、組み立てが煩雑であるという問題がある。また、型枠が鋳物製であるため、重量が重く、人手による組み立て作業が大変であるという問題もある。
特許文献１に開示された供試体用の型枠では、日本工業規格に基づくコンクリート強度試験法とは異なる試験法用であり、日本工業規格に基づく試験結果を得ることができないという問題がある。 The casting mold has a structure in which eight parts are assembled by tightening them with bolts and nuts, and thus there is a problem that assembling in accordance with the allowable dimensions requires carefulness and the assembly is complicated. In addition, since the mold is made of cast metal, there is a problem that it is heavy and difficult to assemble manually.
The mold for a specimen disclosed in Patent Document 1 is for a test method different from a concrete strength test method based on Japanese Industrial Standards, and there is a problem that a test result based on Japanese Industrial Standards cannot be obtained.

本発明は、上記問題点に鑑みてなされたものであり、日本工業規格：ＪＩＳ Ａ １１３２に規定されている許容寸法に簡単に組み立てることができるコンクリートの曲げ強度試験用供試体型枠を提供することを目的とする。   The present invention has been made in view of the above problems, and provides a specimen form for a concrete bending strength test that can be easily assembled to an allowable dimension defined in Japanese Industrial Standards: JIS A 1132. For the purpose.

上記目的を達成するため、本発明に係るコンクリートの曲げ強度試験用供試体型枠は、
底板と、前記底板上に立設される２枚の側板と、前記底板上に立設された２枚の前記側板の間に立設される２枚の端板と、を備え、上方が開口した直方体状に組立固定されるコンクリートの曲げ強度試験用供試体型枠であって、
前記側板および前記端板は、前記側板と前記端板とを貫通させて連結する連結部材を介して締め付けられ、
前記連結部材は、一端が前記側板の一方の外側に当てられ他端が前記側板の他方の外側に位置する係止部を備え、
前記連結部材には、前記連結部材を介して前記側板と前記端板とを締め付ける締め付け機構が備えられており、
前記締め付け機構は、前記係止部に係止される本体部と、前記本体部と前記他方の前記側板との距離を調整して突っ張ることで前記側板と前記端板とを締め付ける操作部と、を備えて構成される、
ことを特徴とする。 In order to achieve the above object, a specimen formwork for bending strength test of concrete according to the present invention is as follows:
A bottom plate, two side plates erected on the bottom plate, and two end plates erected between the two side plates erected on the bottom plate. A specimen formwork for bending strength test of concrete assembled and fixed in a rectangular parallelepiped shape,
The side plates and the end plate is clamped via a coupling member for coupling by penetrating the front Symbol plate and the front Symbol end plate,
The connecting member includes a locking portion having one end applied to one outer side of the side plate and the other end positioned on the other outer side of the side plate,
The connecting member is provided with a tightening mechanism for tightening the side plate and the end plate through the connecting member,
The tightening mechanism includes a main body portion that is locked to the locking portion, an operation portion that tightens the side plate and the end plate by adjusting and stretching a distance between the main body portion and the other side plate, configured with a,
It is characterized by that.

また、底板および側板は、中空材を２枚のパネルで挟んだ複合パネルと、複合パネルのコンクリートと接する表面に設けられる面部材と、を備えて構成され、端板は、合成樹脂または金属の板部材で構成されることが好ましい。   Further, the bottom plate and the side plate are configured to include a composite panel in which a hollow material is sandwiched between two panels, and a surface member provided on the surface of the composite panel in contact with the concrete. The end plate is made of synthetic resin or metal. It is preferable to be comprised with a plate member.

また、側板は、底板の表面と接触する第１の底部分にシール材が充填されるシール材用溝を備え、端板は、底板の表面と接触する第２の底部分の表面と、側板と接触する側部分の表面にそれぞれシール材が充填されるシール材用溝を備えることが好ましい。   The side plate includes a seal material groove in which a seal material is filled in a first bottom portion that contacts the surface of the bottom plate, and the end plate includes a surface of the second bottom portion that contacts the surface of the bottom plate, and the side plate. It is preferable to provide the groove | channel for sealing materials by which the sealing material is each filled in the surface of the side part which contacts.

底板と側板とは、いずれか一方に設けられる固定係止部と、いずれか他方に設けられ前記固定係止部に係止されて互いを連結固定状態に保持する連結保持部と、を備えることが好ましい。   The bottom plate and the side plate include a fixed locking portion provided on one of them, and a connection holding portion provided on either one of the bottom plates and locked to the fixed locking portion to hold each other in a connected and fixed state. Is preferred.

底板は、運搬用取手部を備えることが好ましい。   The bottom plate preferably includes a handle for transportation.

本発明によれば、日本工業規格：ＪＩＳ Ａ １１３２に規定されている許容寸法に簡単に組み立てることができる。   According to the present invention, it can be easily assembled to an allowable dimension defined in Japanese Industrial Standard: JIS A1132.

本発明のコンクリートの曲げ試験用供試体型枠の一実施の形態を示す外観斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external perspective view showing an embodiment of a test specimen mold for concrete bending test according to the present invention. 本発明の一実施の形態の正面図、平面図、右側面である。It is the front view, top view, and right side of one embodiment of the present invention. 本発明の一実施の形態の底板の平面図、正面図、右側面図である。It is a top view, a front view, and a right side view of a bottom plate according to an embodiment of the present invention. 本発明の一実施の形態の側板の正面図、底面図、右側面図、右側面図中の部分拡大図である。It is the front view of the side board of one embodiment of the present invention, a bottom view, a right side view, and a partial enlarged view in a right side view. 本発明の一実施の形態の端板の正面図、底面図、右側面図である。It is the front view, bottom view, and right view of the end plate of one embodiment of the present invention. 本発明の一実施の形態の底板の詳細断面図、側板の詳細断面図である。It is detailed sectional drawing of the baseplate of one embodiment of this invention, and detailed sectional drawing of a side plate. 本発明の一実施の形態の連結部材の正面図である。It is a front view of the connection member of one embodiment of the present invention. 本発明の一実施の形態の締め付け機構の正面図、右側面図である。It is the front view and right view of the fastening mechanism of one embodiment of this invention.

以下に、本発明の一実施の形態に係るコンクリートの曲げ強度試験用供試体型枠を添付図面に基づいて説明する。
本発明のコンクリートの曲げ強度試験用供試体型枠（以下、単に供試体型枠と略記する。）１は、底板１０と、底板１０上に立設される２枚の側板２０と、底板１０上に立設された２枚の側板２０の間に立設される２枚の端板３０と、を備え、上方が開口した直方体状に組立固定されて構成される。
供試体型枠１は、日本工業規格により、標準断面寸法として１辺が１００ｍｍの正方形、または１辺が１５０ｍｍの正方形の２種類で、長さは、それぞれの１辺の長さの３倍より、８０ｍｍ以上長い型枠空間を形成できるようにされている。
供試体型枠１を構成する底板１０，側板２０は、複合パネル４０を母材として備えて構成され、軽量化と、必要な剛性が確保されている。
端板３０は、標準断面寸法を確保するため、合成樹脂または金属製の板材が用いられ、例えば軽量化のため合成樹脂板で構成される。
母材となる複合パネル４０は、中空材４１を２枚のパネル４２で挟んで構成され、例えばアルミニウム製のハニカムパネルで構成される。複合パネル４０は、図６に示すように、例えば６角形状の中空孔が連続するハニカムコア４１が中空材とされ、ハニカムコア４１を２枚のアルミニウム製のパネル４２で挟み、ハニカムコア４１の周囲をアルミニウム製の枠部材４３で囲んで接着などによって取り付けて構成されている。
なお、中空材４１としては、ハニカムコアに限らず、アルミニウム製等の角パイプ等を横に並べて構成したものであっても良く、軽量化と、必要な剛性とを確保できるものであれば良い。
また、複合パネル４０のハニカムコア４１の周囲の端面を囲む枠部材４３は、必ずしも全周に設ける必要はない。 Hereinafter, a specimen form for bending strength test of concrete according to an embodiment of the present invention will be described with reference to the accompanying drawings.
A specimen mold for bending strength testing of concrete according to the present invention (hereinafter simply referred to as a specimen mold) 1 includes a bottom plate 10, two side plates 20 erected on the bottom plate 10, and a bottom plate 10. And two end plates 30 erected between the two side plates 20 erected on the top, and are assembled and fixed in a rectangular parallelepiped shape with the upper part opened.
According to Japanese Industrial Standards, the specimen mold 1 has two types of standard cross-sectional dimensions, a square with a side of 100 mm, or a square with a side of 150 mm. The length is three times the length of each side. , 80 mm or more long formwork space can be formed.
The bottom plate 10 and the side plate 20 constituting the specimen mold 1 are configured to include the composite panel 40 as a base material, and light weight and necessary rigidity are ensured.
The end plate 30 is made of a synthetic resin or metal plate material to ensure a standard cross-sectional dimension, and is made of a synthetic resin plate for weight reduction, for example.
The composite panel 40 serving as a base material is configured by sandwiching a hollow material 41 between two panels 42, for example, an aluminum honeycomb panel. As shown in FIG. 6, in the composite panel 40, for example, a honeycomb core 41 in which hexagonal hollow holes are continuous is used as a hollow material, and the honeycomb core 41 is sandwiched between two aluminum panels 42. The periphery is surrounded by an aluminum frame member 43 and attached by bonding or the like.
The hollow material 41 is not limited to the honeycomb core, and may be a structure in which square pipes made of aluminum or the like are arranged side by side, as long as it can secure light weight and necessary rigidity. .
Further, the frame member 43 surrounding the end face around the honeycomb core 41 of the composite panel 40 is not necessarily provided on the entire circumference.

供試体型枠１を構成する底板１０、側板２０は、コンクリートと接する表面に面部材１１，２１をそれぞれ備えており、複合パネル４０の表面のパネル４２に接着などによって取り付けられる。端板３０は、合成樹脂板の表面が面部材３１と兼用される。
供試体型枠１を構成する側板２０は、直方体状に組み立てる場合の底板１０との接触面にシール材用溝２２が形成されている。同様に、供試体型枠１を構成する端板３０は、直方体状に組み立てる場合の底板１０および側板２０との接触面にシール材用溝３２，３３が形成されている。
側板２０は、底板１０の表面と接触する第１の底部分２３の表面にシール材が充填されるシール材用溝２２が長手方向に沿って形成されている。シール材用溝２２は、断面が半円形状とされ、２条形成されている。側板２０では、第１の底部分２３は、複合パネル４０の枠部材４３と兼用されており、枠部材４３の表面が第１の底部分２３とされてシール材用溝２２が形成されている。
端板３０は、底板１０の表面と接触する合成樹脂板の第２の底部分３４と、側板２０の表面と接触する合成樹脂板の側部分３５とに、それぞれシール材が充填されるシール材用溝３２，３３が長手方向に沿って形成されている。シール材用溝３２，３３は、断面が半円形状とされ、それぞれ２条形成されている。
なお、端板３０を合成樹脂や金属板とせず、複合パネル４０を用いる場合には、第２の底部分３４および側部分３５は、複合パネル４０の枠部材４３と兼用してこれらの表面にシール材用溝３２，３３を形成するようにすれば良い。 The bottom plate 10 and the side plate 20 constituting the specimen mold 1 are respectively provided with surface members 11 and 21 on the surface in contact with the concrete, and are attached to the panel 42 on the surface of the composite panel 40 by bonding or the like. The end plate 30 has the surface of the synthetic resin plate also used as the surface member 31.
The side plate 20 constituting the specimen mold 1 is formed with a sealing material groove 22 on the contact surface with the bottom plate 10 when assembled in a rectangular parallelepiped shape. Similarly, the end plate 30 constituting the specimen mold 1 is formed with sealing material grooves 32 and 33 on the contact surfaces of the bottom plate 10 and the side plate 20 when assembled in a rectangular parallelepiped shape.
In the side plate 20, a seal material groove 22 filled with a seal material is formed along the longitudinal direction on the surface of the first bottom portion 23 in contact with the surface of the bottom plate 10. The groove 22 for the sealing material has a semicircular cross section and is formed in two strips. In the side plate 20, the first bottom portion 23 is also used as the frame member 43 of the composite panel 40, and the surface of the frame member 43 is used as the first bottom portion 23 to form the sealing material groove 22. .
The end plate 30 is a sealing material in which the second bottom portion 34 of the synthetic resin plate that contacts the surface of the bottom plate 10 and the side portion 35 of the synthetic resin plate that contacts the surface of the side plate 20 are filled with the sealing material, respectively. Grooves 32 and 33 are formed along the longitudinal direction. The grooves 32 and 33 for the sealing material have a semicircular cross section and are formed in two strips.
When the end panel 30 is not a synthetic resin or metal plate and the composite panel 40 is used, the second bottom portion 34 and the side portion 35 are also used as the frame member 43 of the composite panel 40 on the surfaces thereof. The grooves 32 and 33 for the sealing material may be formed.

底板１０は、供試体型枠１の底部を塞ぐ板材であり、図３に示すように、曲げ強度試験用の供試体を成形するための型枠空間を確保できる余裕のある寸法の長方形状に形成される。底板１０の寸法は、例えば、標準断面寸法の１辺を１５０ｍｍとする場合には、例えば短辺が２２４ｍｍ、長辺が６２５ｍｍとされ、厚さが４０ｍｍとされる。これら短辺、長辺の寸法は、日本工業規格の範囲で、適宜定めれば良い。
底板１０は、図６（ａ）に示すように、中空材としてのハニカムコア４１またはアルミニウム製の角パイプなどを備えた複合パネル４０を母材（芯材）とし、コンクリートと接触する側の表面（上表面）に合成樹脂板または鋼板が面部材１１としてパネル４２に接着などで取り付けてある。底板１０は、複合パネル４０の長辺の両側に、断面形状がＬ字状の補強部材１２が配置され、例えば金属製のアングル材で長辺の端面と裏面の一部を覆うように接着などで取り付けてある。
底板１０には、底板１０と底板１０上に立設される側板２０とを連結固定するための連結保持機構（後述する）５０の取り付け用の雌ねじ部１３が片側に３箇所ずつ形成してある。
また、供試体型枠１の運搬のため、底板１０の長辺の両端部に短辺と平行に貫通孔１４が形成してある。貫通孔１４には、図１，２に示すように、運搬用取手部１５が装着されて両端部がそれぞれ外側に突き出しており、４箇所の突き出した部分には、カバー１６が装着され、手を傷つけないようにしてある。 The bottom plate 10 is a plate material that closes the bottom of the specimen mold 1, and as shown in FIG. 3, the bottom plate 10 has a rectangular shape with a margin that can secure a mold space for molding a specimen for bending strength testing. It is formed. For example, when one side of the standard cross-sectional dimension is 150 mm, the bottom plate 10 has a short side of 224 mm, a long side of 625 mm, and a thickness of 40 mm. These short side and long side dimensions may be appropriately determined within the range of Japanese Industrial Standards.
As shown in FIG. 6 (a), the bottom plate 10 has a composite panel 40 including a honeycomb core 41 as a hollow material or a square pipe made of aluminum as a base material (core material), and has a surface in contact with concrete. A synthetic resin plate or a steel plate is attached to the panel 42 as the surface member 11 by bonding or the like (on the upper surface). The bottom plate 10 has L-shaped reinforcing members 12 disposed on both sides of the long side of the composite panel 40. For example, the bottom plate 10 is bonded with a metal angle member so as to cover a part of the end surface and the back surface of the long side. It is attached with.
The bottom plate 10 is formed with three internal thread portions 13 for attaching a connection holding mechanism (described later) 50 for connecting and fixing the bottom plate 10 and the side plate 20 erected on the bottom plate 10 on one side. .
Further, in order to transport the specimen mold 1, through holes 14 are formed at both ends of the long side of the bottom plate 10 in parallel with the short side. As shown in FIGS. 1 and 2, the transport handle 15 is attached to the through-hole 14 and both ends protrude outward, and a cover 16 is attached to the four protruding portions. Is not hurt.

側板２０は、供試体型枠１の底板１０上に配置されて両側部を塞ぐ板材であり、図４に示すように、曲げ強度試験用の供試体を成形するための型枠空間を確保できる余裕のある長さ寸法で、所定の高さ寸法の長方形状に形成される。側板２０の寸法は、例えば、標準断面寸法の１辺を１５０ｍｍとする場合には、短辺となる高さが１５０ｍｍ、例えば長辺が底板１０と同一の６２５ｍｍとされ、厚さが約４０ｍｍとされる。長辺の寸法は、日本工業規格の範囲で、適宜定めれば良い。
側板２０は、図６（ｂ）に示すように、ハニカムコア４１またはアルミニウム製の角パイプなどを備えた複合パネル４０を母材（芯材）とし、コンクリートと接触する側の表面（図示例では、右側の表面）全体に合成樹脂板または鋼板が面部材２１としてパネル４２に接着などで取り付けてある。側板２０は、複合パネル４０の長辺の上側に断面形状がＬ字状の補強部材２４が配置され、金属製のアングル材で長辺の端面と裏面の一部を覆うように接着などで取り付けてある。側板２０の裏面には、上部の補強部材２４に連結するように、中間部の合成樹脂板の補強部材２５と下部の鋼板の補強部材２６が配置されて複合パネル４０のパネル４２に接着などで取り付けてある。
側板２０には、底板１０と底板１０上に立設される側板２０とを連結固定するための連結保持機構（後述する）５０の取り付け用の雌ねじ部２７が片側に３箇所ずつ形成してある（図４参照）。
また、側板２０には、側板２０の長辺の両端部の短辺の上下に表裏面を貫通してそれぞれ２つの貫通孔２８が形成してある。貫通孔２８には、側板２０と底板１０上に立設される端板３０とを連結固定するための連結部材６０（図７参照）が端板３０を挟んで挿通され、図１，２に示すように、連結部材６０を突っ張るようにして締め付ける締め付け機構（後述する）７０が用いられる。
なお、側板２０の貫通孔２８と、連結部材６０とは、連結部材６０の挿通に支障のない範囲で、公差を小さくしておくことが、組み立て精度上好ましい。
側板２０の底板１０と接する下端面には、既に説明したように、複合パネル４０の枠部材４３と兼用した第１の底部分２３に、長手方向に沿って２条のシール材用溝２２が形成してある。 The side plate 20 is a plate material that is disposed on the bottom plate 10 of the specimen mold 1 and closes both sides, and as shown in FIG. 4, a mold space for molding a specimen for bending strength testing can be secured. It is formed in a rectangular shape with a predetermined height dimension with a sufficient length dimension. For example, when one side of the standard cross-sectional dimension is 150 mm, the side plate 20 has a short side height of 150 mm, for example, the long side is 625 mm, which is the same as the bottom plate 10, and the thickness is about 40 mm. Is done. The long side dimension may be appropriately determined within the range of Japanese Industrial Standards.
As shown in FIG. 6B, the side plate 20 has a composite panel 40 including a honeycomb core 41 or an aluminum square pipe as a base material (core material), and a surface on the side in contact with concrete (in the illustrated example). , A synthetic resin plate or a steel plate is attached to the panel 42 as a surface member 21 by bonding or the like. The side plate 20 is provided with a reinforcing member 24 having an L-shaped cross section on the upper side of the long side of the composite panel 40, and is attached by adhesion or the like so as to cover a part of the end surface of the long side and the back surface with a metal angle material It is. On the back surface of the side plate 20, an intermediate synthetic resin plate reinforcing member 25 and a lower steel plate reinforcing member 26 are arranged so as to be connected to the upper reinforcing member 24 and bonded to the panel 42 of the composite panel 40. It is attached.
On the side plate 20, three female screw portions 27 for attaching a connection holding mechanism (described later) 50 for connecting and fixing the bottom plate 10 and the side plate 20 standing on the bottom plate 10 are formed on one side. (See FIG. 4).
The side plate 20 has two through-holes 28 penetrating the front and back surfaces above and below the short sides of both ends of the long side of the side plate 20. A connecting member 60 (see FIG. 7) for connecting and fixing the side plate 20 and the end plate 30 erected on the bottom plate 10 is inserted into the through hole 28 with the end plate 30 interposed therebetween. As shown, a tightening mechanism (described later) 70 for tightening the connecting member 60 in a stretched manner is used.
In addition, it is preferable in terms of assembly accuracy that the through hole 28 of the side plate 20 and the connecting member 60 have a small tolerance within a range that does not hinder the insertion of the connecting member 60.
On the lower end surface of the side plate 20 in contact with the bottom plate 10, as described above, the first bottom portion 23 that also serves as the frame member 43 of the composite panel 40 has two grooves 22 for the sealing material along the longitudinal direction. It is formed.

端板３０は、供試体型枠１の底板１０上に立設された２枚の側板２０の間に立設されて両端部を塞ぐ板材であり、図５に示すように、曲げ強度試験用の供試体を成形するための型枠空間を確保する所定の幅寸法で、所定の高さ寸法の正方形状に形成される。端板３０の寸法は、例えば、標準断面寸法の１辺を１５０ｍｍとする場合には、幅および高さが１５０ｍｍとされ、厚さが約３２ｍｍとされる。
端板３０は、供試体の標準断面寸法に大きな影響を及ぼすため、既に説明したように、合成樹脂製または金属製の板材で構成される。本実施の形態では、軽量化と必要な剛性の確保のため合成樹脂板で構成してある。
また、端板３０には、側板２０の上下の貫通孔２８に対応して表裏面と平行に貫通してそれぞれ２つ貫通孔３６が形成してある。貫通孔３６には、端板３０と底板１０上に立設される端板３０を挟む両側の側板２０とを連結固定するための連結部材６０（図７参照）が挿通され、図１，２に示すように、連結部材６０を突っ張るようにして締め付ける締め付け機構（後述する）７０が用いられる。
したがって、端板３０の貫通孔３６と、連結部材６０とは、連結部材６０の挿通に支障のない範囲で、公差を小さくしておくことが、組み立て精度上好ましい。
なお、端板３０の底板１０と接する下端面には、既に説明したように、第２の底部分３４に、長手方向に沿って２条のシール材用溝３２が形成してある。同様に、端板３０の側板２０と接する両側端面である側部分３５には、既に説明したように、長手方向（上下方向）に沿って２条のシール材用溝３３が形成してある。 The end plate 30 is a plate material that stands between two side plates 20 that are erected on the bottom plate 10 of the specimen mold 1 and closes both ends. As shown in FIG. Are formed in a square shape having a predetermined height and a predetermined width that secures a formwork space for molding the specimen. For example, when one side of the standard cross-sectional dimension is 150 mm, the end plate 30 has a width and height of 150 mm and a thickness of about 32 mm.
Since the end plate 30 has a great influence on the standard cross-sectional dimension of the specimen, as described above, the end plate 30 is made of a synthetic resin or metal plate. In the present embodiment, a synthetic resin plate is used to reduce the weight and secure the necessary rigidity.
In addition, two end holes 30 are formed in the end plate 30 in parallel with the front and back surfaces corresponding to the upper and lower through holes 28 of the side plate 20. A connecting member 60 (see FIG. 7) for connecting and fixing the end plate 30 and the side plates 20 on both sides sandwiching the end plate 30 standing on the bottom plate 10 is inserted into the through-hole 36, and FIGS. As shown in FIG. 4, a tightening mechanism (described later) 70 is used for tightening the connecting member 60 in a stretched manner.
Therefore, it is preferable in terms of assembly accuracy that the through hole 36 of the end plate 30 and the connecting member 60 have a small tolerance within a range that does not hinder the insertion of the connecting member 60.
In addition, as already demonstrated, the 2 groove | channel 32 for the sealing material is formed in the 2nd bottom part 34 in the lower end surface which contact | connects the bottom plate 10 of the end plate 30 along the longitudinal direction. Similarly, on the side portions 35 which are both side end surfaces in contact with the side plate 20 of the end plate 30, as described above, two sealing material grooves 33 are formed along the longitudinal direction (vertical direction).

連結保持機構５０は、固定係止部５１と、固定係止部５１に係止されて互いを連結固定状態に保持する連結保持部５２とを備えて構成され、例えば図１，２に示したキャッチクリップが用いられる。キャッチクリップで構成された連結保持機構５０では、固定係止部５１は、上端部が外側に向けて斜めに曲げられたフック部５１ａを備えており、例えば、図３に示すように、底板１０の雌ねじ部１３に取り付けられる。連結保持部５２は、環状部５２ａと、回動可能とされたレバー部５２ｂとを備えており、レバー部５２ｂの回動中心より離れた外側に環状部５２ａが取り付けられて構成され、例えば、側板２０に取り付けられる。
これにより、固定係止部５１のフック部５１ａに連結保持部５２の環状部５２ａを引っ掛けた後、環状部５２ａを引き上げるようにレバー部５２ｂを回動することで、底板１０と側板２０とを締め付けて連結固定することができ、この連結固定状態を保持することができる。したがって、底板１０と側板２０とは、連結保持機構５０によって工具を用いることなく、組み立てることができる。 The connection holding mechanism 50 includes a fixed locking portion 51 and a connection holding portion 52 that is locked to the fixed locking portion 51 and holds each other in a connected and fixed state. For example, as shown in FIGS. A catch clip is used. In the connection holding mechanism 50 constituted by catch clips, the fixed locking portion 51 includes a hook portion 51a whose upper end portion is bent obliquely toward the outside. For example, as shown in FIG. Attached to the female screw portion 13. The connection holding part 52 includes an annular part 52a and a lever part 52b that can be rotated, and the annular part 52a is attached to the outer side away from the rotation center of the lever part 52b. It is attached to the side plate 20.
Thereby, after hooking the annular portion 52a of the connection holding portion 52 on the hook portion 51a of the fixed locking portion 51, the lever portion 52b is rotated so as to pull up the annular portion 52a, whereby the bottom plate 10 and the side plate 20 are moved. It can be connected and fixed by tightening, and this connected and fixed state can be maintained. Therefore, the bottom plate 10 and the side plate 20 can be assembled without using a tool by the connection holding mechanism 50.

締め付け機構７０は、図１，２に示すように、側板２０および端板３０を貫通して連結する連結部材６０を介して側板２０と端板３０とを締め付けるものである。
連結部材６０は、一端が側板２０の一方の外側に当てられ、他端が側板２０の他方の外側に位置する係止部６１を備えて構成され、中間部は丸棒とされている。連結部材６０の一端には、図７に示すように、大径部６２が形成され、側板２０の貫通孔２８の外面に当たり、通り抜けないような大きさとしてあり、他端部には、係止部６１となる小径部が形成され、丸棒との段差によって締め付け機構７０の本体部７１を係止できるようにしてある（図１，２参照）。
締め付け機構７０の本体部７１は、図１，２および図８に示すように、板状とされ、側板２０および端板３０を貫通する２本の連結部材６０の小径とされた係止部６１に係止される２つの係止溝７１ａを備えている。本体部７１は、係止溝７１ａを連結部材６０の係止部６１に係止することで、連結部材６０の中心軸方向への移動を規制し、一体に連結部材６０と本体部７１とが移動される。
締め付け機構７０は、本体部７１の２つの係止溝７１ａの中央に表裏を貫通する雌ねじ部７１ｂが形成してある。雌ねじ部７１ｂには、操作部７２を構成する締め付けロッド７２ａが螺合されている。締め付けロッド７２ａの先端部には、側板２０の外表面に当てる円板状の当て板７２ｂが回動可能に連結され、後端部には、締め付けロッド７２ａを回転操作する操作ハンドル７２ｃが取り付けてある。
これにより、本体部７１の係止溝７１ａを２本の連結部材６０の係止部６１に係止して連結部材６０と本体部７１とを一体にしておき、本体部７１の雌ねじ部７１ｂに螺合した締め付けロッド７２ａの先端部の当て板７２ｂを、側板２０に当て締め付けロッド７２ａを操作ハンドル７２ｃで回転する。これにより、側板２０と本体部７１との距離を開くように調整し、互いを突っ張ることで側板２０と端板とを締め付けることができる。
したがって、２つの側板２０に挟まれた端板３０は、特別な位置合わせを行うことなく、２本の連結部材６０を挿通することで、簡単に位置決めして精度良く組み立てることができる。また、締め付け機構７０で締め付けて側板２０と端板３０を連結固定することで、操作ハンドル７２ｃの操作により、工具を用いることなく簡単に組み立てることができる。 As shown in FIGS. 1 and 2, the tightening mechanism 70 tightens the side plate 20 and the end plate 30 via a connecting member 60 that penetrates and connects the side plate 20 and the end plate 30.
The connecting member 60 is configured to include a locking portion 61 having one end applied to one outer side of the side plate 20 and the other end positioned on the other outer side of the side plate 20, and the intermediate portion is a round bar. As shown in FIG. 7, a large diameter portion 62 is formed at one end of the connecting member 60, and is sized so as not to pass through the outer surface of the through hole 28 of the side plate 20. A small diameter portion to be the portion 61 is formed, and the main body 71 of the tightening mechanism 70 can be locked by a step with the round bar (see FIGS. 1 and 2).
As shown in FIGS. 1, 2, and 8, the main body portion 71 of the tightening mechanism 70 has a plate shape, and a locking portion 61 having a small diameter of the two connecting members 60 that penetrate the side plate 20 and the end plate 30. Two locking grooves 71a to be locked to are provided. The main body 71 restricts the movement of the connecting member 60 in the central axis direction by locking the locking groove 71 a with the locking portion 61 of the connecting member 60, and the connecting member 60 and the main body 71 are integrally formed. Moved.
The tightening mechanism 70 has a female screw portion 71 b penetrating the front and back at the center of the two locking grooves 71 a of the main body portion 71. A tightening rod 72a constituting the operation portion 72 is screwed into the female screw portion 71b. A disc-shaped backing plate 72b applied to the outer surface of the side plate 20 is rotatably connected to the distal end portion of the clamping rod 72a, and an operation handle 72c for rotating the clamping rod 72a is attached to the rear end portion. is there.
As a result, the locking groove 71a of the main body 71 is locked to the locking portions 61 of the two connecting members 60 so that the connecting member 60 and the main body 71 are integrated, and the female threaded portion 71b of the main body 71 is engaged. The contact plate 72b at the tip of the screwed tightening rod 72a is applied to the side plate 20, and the tightening rod 72a is rotated by the operation handle 72c. Thereby, it adjusts so that the distance of the side plate 20 and the main-body part 71 may be opened, and the side plate 20 and an end plate can be clamp | tightened by stretching each other.
Therefore, the end plate 30 sandwiched between the two side plates 20 can be easily positioned and assembled with high accuracy by inserting the two connecting members 60 without performing special positioning. Further, the side plate 20 and the end plate 30 are connected and fixed by tightening with the tightening mechanism 70, whereby the operation can be easily assembled without using a tool by operating the operation handle 72c.

このように構成した供試体型枠１では、側板２０のシール材用溝２２および端板３０のシール材用溝３２，３３にそれぞれ、シール材としてグリースを塗布しておく。
そして、四箇所にカバー１６を備える運搬用取手部１５が取り付けられた底板１０上に、側板２０の長辺方向に沿って２枚の側板２０を配置するとともに、２枚の底板１０の間に端板３０を挟むように配置する。
こののち、一方の側板２０の外側から端板３０を貫通して他方の側板２０の外側まで、それぞれ２本の連結部材６０を貫通孔２８および貫通孔３６を介して挿通する。この連結部材６０の挿通により、側板２０に対する端板３０の位置決めがなされる。
２本の連結部材６０の側板２０の外側に突き出している係止部６１に、締め付け機構７０の本体部７１の係止溝７１ａを係止し、締め付けロッド７２ａの当て板７２ｂを側板２０の外面に当てたのち、操作ハンドル７２ｃを回転操作して２枚の側板２０の間に端板３０を挟むようにして連結固定する。
次いで、連結保持機構５０を用いて、側板２０の３箇所の連結保持部５２の環状部５２ａを底板１０の３箇所の固定係止部５１のフック部５１ａに引っ掛けたのち、レバー部５２ｂを操作して締め付けて連結固定状態を保持する。同様にして、もう一方の側板２０と底板１０とを３箇所の連結保持機構５０で連結固定状態とする
こうして供試体型枠１は、工具などを必要とせずに組み立てが行われ、完全に締め付ける前の組み立て途中において、底板１０，側板２０，端板３０の各部材同士の密着状態や傾きなどのないことを確認するとともに、寸法についても必要に応じて定規などを用いて確認しながら組み立てる。
こうして組み立てられた供試体型枠１には、日本工業規格に規定された方法で、コンクリートが充填され、曲げ強度試験用の供試体が作られる。
供試体の供試体型枠１からの取り出しは、組み立ての逆の手順で行うことで、工具などを必要とせず、簡単に脱型することができる。 In the specimen mold 1 configured as described above, grease is applied as a sealing material to the sealing material groove 22 of the side plate 20 and the sealing material grooves 32 and 33 of the end plate 30 respectively.
Then, two side plates 20 are arranged along the long side direction of the side plate 20 on the bottom plate 10 to which the carrying handle 15 including the cover 16 is attached at four locations, and between the two bottom plates 10. It arrange | positions so that the end plate 30 may be pinched | interposed.
After that, two connecting members 60 are inserted through the through holes 28 and 36 from the outside of one side plate 20 through the end plate 30 to the outside of the other side plate 20, respectively. The end plate 30 is positioned with respect to the side plate 20 by the insertion of the connecting member 60.
The locking groove 61a of the body portion 71 of the tightening mechanism 70 is locked to the locking portion 61 protruding to the outside of the side plate 20 of the two connecting members 60, and the contact plate 72b of the tightening rod 72a is connected to the outer surface of the side plate 20. Then, the operation handle 72c is rotated to connect and fix the end plate 30 between the two side plates 20.
Next, after using the connection holding mechanism 50 to hook the annular portions 52a of the three connection holding portions 52 of the side plate 20 on the hook portions 51a of the three fixed locking portions 51 of the bottom plate 10, the lever portion 52b is operated. Then, tighten and hold the connection fixed state. Similarly, the other side plate 20 and the bottom plate 10 are connected and fixed by three connection holding mechanisms 50. In this way, the specimen mold 1 is assembled without any tools and tightened completely. In the middle of the previous assembly, it is confirmed that there is no contact state or inclination between the members of the bottom plate 10, the side plate 20, and the end plate 30, and the dimensions are assembled while confirming using a ruler if necessary.
The specimen form 1 assembled in this way is filled with concrete by a method specified in Japanese Industrial Standard, and a specimen for a bending strength test is made.
The specimen can be removed from the specimen form 1 in the reverse order of assembly, so that it can be easily removed without using a tool.

本発明のコンクリートの曲げ強度試験用供試体型枠１によれば、底板１０と、底板１０上に立設される２枚の側板２０と、底板１０上に立設された２枚の側板２０の間に立設される２枚の端板３０と、を備え、上方が開口した直方体状に組立固定されるコンクリートの曲げ強度試験用供試体型枠１であって、側板２０および端板３０は、側板２０と端板３０とを貫通させて連結する連結部材６０を介して締め付けられ、連結部材６０は、一端が側板２０の一方の外側に当てられ他端が側板２０の他方の外側に位置する係止部６１を備え、連結部材６０には、連結部材６０を介して側板２０と端板３０とを締め付ける締め付け機構７０が備えられており、締め付け機構７０は、係止部６１に係止される本体部７１と、本体部７１と他方の側板２０との距離を調整して突っ張ることで側板２０と端板３０とを締め付ける操作部７２と、を備えて構成されるので、２枚の側板２０の間に端板３０を挟んで連結部材６０を挿通するだけで、側板２０と端板３０との位置合わせを行うことなく、日本工業規格：ＪＩＳ Ａ １１３２に規定されている許容寸法に簡単に組み立てることができる。 According to the test specimen mold 1 for bending strength testing of concrete of the present invention, the bottom plate 10, the two side plates 20 standing on the bottom plate 10, and the two side plates 20 standing on the bottom plate 10. A test piece mold 1 for bending strength testing of concrete, which is assembled and fixed in a rectangular parallelepiped shape having an open top, and includes a side plate 20 and an end plate 30. is tightened via a connecting member 60 for connecting by penetrating the side plate 20 and the end plate 30, the connecting member 60 has one end the other end devoted to one of the outsides of the side plate 20 of the side plate 20 other outer The connecting member 60 is provided with a fastening mechanism 70 for fastening the side plate 20 and the end plate 30 via the connecting member 60, and the fastening mechanism 70 is connected to the engaging portion 61. The main body 71 to be locked, the main body 71 and the other side plate 2 Since the configuration includes an operation unit 72 for clamping the side plates 20 and the end plate 30, a by thrusting by adjusting the distance between, between the two side plates 20 of the connecting member 60 across the end plate 30 It can be easily assembled to the allowable dimensions defined in Japanese Industrial Standards: JIS A 1132 without just aligning the side plate 20 and the end plate 30 with each other.

また、連結部材６０は、一端が側板２０の一方の外側に当てられ他端が側板２０の他方の外側に位置する係止部６１を備え、連結部材６０には、連結部材６０を介して側板２０と端板３０とを締め付ける締め付け機構７０が備えられており、締め付け機構７０は、係止部６１に係止される本体部７１と、本体部７１と他方の側板２０との距離を調整して突っ張ることで側板２０と端板３０とを締め付ける操作部７２と、を備えて構成されているので、連結部材６０と締め付け機構７０とで簡単に組み立てることができ、ボルト・ナットを用いる場合などに比べ、スパナなどの工具の必要もなく、短時間に組み立てることができる。
 Moreover, consolidated member 60 is provided with an engagement portion 61 which the other end one end devoted to one of the outsides of the side plate 20 located on the other outer side plate 20, the connecting member 60, via the connecting member 60 A tightening mechanism 70 for tightening the side plate 20 and the end plate 30 is provided. The tightening mechanism 70 adjusts the distance between the main body 71 that is locked by the locking portion 61 and the main body 71 and the other side plate 20. In the case of using bolts and nuts, the connecting member 60 and the tightening mechanism 70 can be easily assembled because the operation portion 72 is configured to tighten the side plate 20 and the end plate 30 by stretching. Compared to the above, it can be assembled in a short time without the need for tools such as a spanner.

また、本発明のコンクリートの曲げ強度試験用供試体型枠１によれば、底板１０および側板２０は、中空材４１を２枚のパネル４２で挟んだ複合パネル４０と、複合パネル４０のコンクリートと接する表面に設けられる面部材１１，２１と、を備えて構成され、端板３０は、合成樹脂または金属の板部材で構成されているので、底板１０，側板２０が複合パネル４０と面部材１１，２１とを組み合わせることで、これまでの鋳物製のものに比べ大幅に軽量化を図ることができ、取り扱いが容易にできると同時に、必要な剛性や強度を確保することができる。さらに、端板３０を合成樹脂または金属の板部材とすることで、断面形状の寸法精度を確保することができる。   Moreover, according to the specimen form 1 for bending strength test of concrete of the present invention, the bottom plate 10 and the side plate 20 are composed of a composite panel 40 in which a hollow material 41 is sandwiched between two panels 42, and the concrete of the composite panel 40. Since the end plate 30 is made of a synthetic resin or metal plate member, the bottom plate 10 and the side plate 20 are composed of the composite panel 40 and the surface member 11. , 21 can be significantly reduced in weight compared to conventional castings and can be handled easily, and at the same time, necessary rigidity and strength can be ensured. Further, by using the end plate 30 as a synthetic resin or metal plate member, the dimensional accuracy of the cross-sectional shape can be ensured.

また、本発明のコンクリートの曲げ強度試験用供試体型枠１によれば、側板２０は、底板１０の表面と接触する第１の底部分２３にシール材が充填されるシール材用溝２２を備え、端板３０は、底板１０の表面と接触する第２の底部分３４の表面と、側板２０と接触する側部分３５の表面にそれぞれシール材が充填されるシール材用溝３２，３３を備えているので、シール材用溝２２，３２，３３を備えることで、グリースなどのシール材を塗布し保持した状態で密着性を確保することができ、充填するコンクリート中の水分の漏えいを完全に防止することができる。さらに、シール材を清掃後、再塗布することで、繰り返し供試体の製造に用いることでき、初期の機能を保って使用することができる。   Moreover, according to the specimen form 1 for bending strength test of concrete according to the present invention, the side plate 20 has the groove 22 for the sealing material in which the first bottom portion 23 contacting the surface of the bottom plate 10 is filled with the sealing material. The end plate 30 includes seal material grooves 32 and 33 in which the surface of the second bottom portion 34 that contacts the surface of the bottom plate 10 and the surface of the side portion 35 that contacts the side plate 20 are filled with the seal material, respectively. Since it is provided with the sealing material grooves 22, 32, 33, it is possible to ensure adhesion in a state where the sealing material such as grease is applied and held, and the leakage of moisture in the concrete to be filled is completely completed. Can be prevented. Furthermore, by cleaning and then reapplying the sealing material, it can be used repeatedly for the production of the specimen, and can be used while maintaining the initial function.

本発明のコンクリートの曲げ強度試験用供試体型枠１によれば、底板１０と側板２０とは、いずれか一方に設けられる固定係止部５１と、いずれか他方に設けられ固定係止部５１に係止されて互いを連結固定状態に保持する連結保持部５２と、を備えて構成されているので、固定係止部５１に連結保持部５２を係止することで、ボルト・ナットを用いる場合などに比べ、スパナなどの工具の必要もなく、簡単に組み立てることができる。   According to the specimen mold 1 for bending strength test of concrete of the present invention, the bottom plate 10 and the side plate 20 are provided with either one of the fixed locking portions 51 and the other fixed locking portion 51 provided on the other. And a connection holding portion 52 that is held in a connected and fixed state by locking the connection holding portion 52 to the fixed locking portion 51, so that a bolt and a nut are used. Compared to cases, there is no need for a wrench tool or the like, and it can be assembled easily.

本発明のコンクリートの曲げ強度試験用供試体型枠１によれば、底板１０は、運搬用取手部１５を備えているので、運搬が容易にできるとともに、手などに傷をつけることなく、安全に運搬することができる。   According to the specimen form 1 for bending strength test of concrete according to the present invention, the bottom plate 10 includes the handle portion 15 for transportation. Therefore, the bottom plate 10 can be easily transported and is safe without damaging the hand. Can be transported to.

なお、上記の実施の形態では、連結保持機構５０をキャッチクリップで構成する場合を例に説明したが、これに限らず、固定係止部５１と連結保持部５２との機能を備えるものであればよい。
また、連結部材６０と締め付け機構７０とで、２枚の側板２０とその間の端板３０とを連結固定する場合を例に説明したが、これに限らず、他の連結部材や締め付け機構であってもよく、スパナなどの工具を必要とせずに締め付けることができるものであればよい。
さらに、本発明は、上記の実施の形態に何ら限定するものではない。 In the above embodiment, the case where the connection holding mechanism 50 is configured by the catch clip has been described as an example. However, the present invention is not limited to this, and the connection holding mechanism 50 may have functions of the fixed locking portion 51 and the connection holding portion 52. That's fine.
Moreover, although the case where the two side plates 20 and the end plate 30 between them are connected and fixed by the connecting member 60 and the tightening mechanism 70 has been described as an example, the present invention is not limited to this, and other connecting members and tightening mechanisms may be used. It does not matter as long as it can be tightened without using a tool such as a spanner.
Furthermore, the present invention is not limited to the above embodiment.

１ 供試体型枠（コンクリートの曲げ強度試験用供試体型枠）
１０ 底板
１１ 面部材
１２ 補強部材
１３ 雌ねじ部
１４ 貫通孔
１５ 運搬用取手部
１６ カバー
２０ 側板
２１ 面部材
２２ シール材用溝
２３ 第１の底部分
２４ 補強部材
２５ 補強部材
２６ 補強部材
２７ 雌ねじ部
２８ 貫通孔
３０ 端板
３１ 面部材
３２ シール材用溝
３３ シール材用溝
３４ 第２の底部分
３５ 側部分
３６ 貫通孔
４０ 複合パネル
４１ ハニカムコア（中空材）
４２ パネル
４３ 枠部材
５０ 連結保持機構
５１ 固定係止部
５１ａ フック部
５２ 連結保持部
５２ａ 環状部
５２ｂ レバー部
６０ 連結部材
６１ 係止部
６２ 大径部
７０ 締め付け機構
７１ 本体部
７１ａ 係止溝
７１ｂ 雌ねじ部
７２ 操作部
７２ａ 締め付けロッド
７２ｂ 当て板
７２ｃ 操作ハンドル 1 Specimen formwork (Specimen formwork for bending strength test of concrete)
DESCRIPTION OF SYMBOLS 10 Bottom plate 11 Surface member 12 Reinforcement member 13 Female thread part 14 Through-hole 15 Handle part 16 for conveyance 16 Cover 20 Side plate 21 Surface member 22 Groove 23 for sealing material First bottom part 24 Reinforcement member 25 Reinforcement member 26 Reinforcement member 27 Female thread part 28 Through hole 30 End plate 31 Face member 32 Sealing material groove 33 Sealing material groove 34 Second bottom portion 35 Side portion 36 Through hole 40 Composite panel 41 Honeycomb core (hollow material)
42 Panel 43 Frame member 50 Connection holding mechanism 51 Fixed locking portion 51a Hook portion 52 Connection holding portion 52a Annular portion 52b Lever portion 60 Connection member 61 Locking portion 62 Large diameter portion 70 Tightening mechanism 71 Main body portion 71a Locking groove 71b Female thread Part 72 operation part 72a clamping rod 72b contact plate 72c operation handle

Claims (5)

底板と、前記底板上に立設される２枚の側板と、前記底板上に立設された２枚の前記側板の間に立設される２枚の端板と、を備え、上方が開口した直方体状に組立固定されるコンクリートの曲げ強度試験用供試体型枠であって、
前記側板および前記端板は、前記側板と前記端板とを貫通させて連結する連結部材を介して締め付けられ、
前記連結部材は、一端が前記側板の一方の外側に当てられ他端が前記側板の他方の外側に位置する係止部を備え、
前記連結部材には、前記連結部材を介して前記側板と前記端板とを締め付ける締め付け機構が備えられており、
前記締め付け機構は、前記係止部に係止される本体部と、前記本体部と前記他方の前記側板との距離を調整して突っ張ることで前記側板と前記端板とを締め付ける操作部と、を備えて構成される、
ことを特徴とするコンクリートの曲げ強度試験用供試体型枠。 A bottom plate, two side plates erected on the bottom plate, and two end plates erected between the two side plates erected on the bottom plate. A specimen formwork for bending strength test of concrete assembled and fixed in a rectangular parallelepiped shape,
The side plates and the end plate is clamped via a coupling member for coupling by penetrating the front Symbol plate and the front Symbol end plate,
The connecting member includes a locking portion having one end applied to one outer side of the side plate and the other end positioned on the other outer side of the side plate,
The connecting member is provided with a tightening mechanism for tightening the side plate and the end plate through the connecting member,
The tightening mechanism includes a main body portion that is locked to the locking portion, an operation portion that tightens the side plate and the end plate by adjusting and stretching a distance between the main body portion and the other side plate, configured with a,
Specimen form for concrete bending strength test. 前記底板および前記側板は、中空材を２枚のパネルで挟んだ複合パネルと、前記複合パネルの前記コンクリートと接する表面に設けられる面部材と、を備えて構成され、
前記端板は、合成樹脂または金属の板部材で構成される、
ことを特徴とする請求項１に記載のコンクリートの曲げ強度試験用供試体型枠。 The bottom plate and the side plate are configured to include a composite panel in which a hollow material is sandwiched between two panels, and a surface member provided on a surface of the composite panel in contact with the concrete,
The end plate is composed of a synthetic resin or metal plate member,
The specimen mold for bending strength test of concrete according to claim 1 . 前記側板は、前記底板の表面と接触する第１の底部分の表面にシール材が充填されるシール材用溝を備え、
前記端板は、前記底板の表面と接触する第２の底部分の表面と、前記側板と接触する側部分の表面にそれぞれシール材が充填されるシール材用溝を備える、
ことを特徴とする請求項１または２に記載のコンクリートの曲げ強度試験用供試体型枠。 The side plate includes a sealing material groove filled with a sealing material on the surface of the first bottom portion that contacts the surface of the bottom plate,
The end plate includes a groove for a sealing material in which a surface of a second bottom portion that contacts the surface of the bottom plate and a surface of the side portion that contacts the side plate are filled with a sealing material, respectively.
3. A specimen form for testing the bending strength of concrete according to claim 1 or 2 . 前記底板と前記側板とは、いずれか一方に設けられる固定係止部と、いずれか他方に設けられ前記固定係止部に係止されて互いを連結固定状態に保持する連結保持部と、を備える、
ことを特徴とする請求項１乃至３のいずれかに記載のコンクリートの曲げ強度試験用供試体型枠。 The bottom plate and the side plate include a fixed locking portion provided on one side, and a connection holding portion provided on either side and locked to the fixed locking portion to hold each other in a connected and fixed state. Prepare
A specimen form for testing the bending strength of concrete according to any one of claims 1 to 3 . 前記底板は、運搬用取手部を備える、
ことを特徴とする請求項１乃至４のいずれかに記載のコンクリートの曲げ強度試験用供試体型枠。 The bottom plate includes a handle for transportation.
A specimen mold for testing the bending strength of concrete according to any one of claims 1 to 4 .
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