JP3198038B2 - Specimen molding form for concrete strength test - Google Patents
Specimen molding form for concrete strength testInfo
- Publication number
- JP3198038B2 JP3198038B2 JP32786495A JP32786495A JP3198038B2 JP 3198038 B2 JP3198038 B2 JP 3198038B2 JP 32786495 A JP32786495 A JP 32786495A JP 32786495 A JP32786495 A JP 32786495A JP 3198038 B2 JP3198038 B2 JP 3198038B2
- Authority
- JP
- Japan
- Prior art keywords
- cut
- cylindrical
- cylindrical body
- wall portion
- groove
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
- B28B7/342—Moulds, cores, or mandrels of special material, e.g. destructible materials which are at least partially destroyed, e.g. broken, molten, before demoulding; Moulding surfaces or spaces shaped by, or in, the ground, or sand or soil, whether bound or not; Cores consisting at least mainly of sand or soil, whether bound or not
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0094—Moulds for concrete test samples
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Sampling And Sample Adjustment (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Description
【０００１】[0001]
【発明が属する技術分野】この発明は、コンクリートの
強度試験用の供試体を成形するために用いる型枠の改良
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a form used for forming a test specimen for a concrete strength test.
【０００２】[0002]
【従来の技術】コンクリートの強度試験に用いる円柱状
をなす供試体を成形する型枠として、一方の筒口を金属
製の底板により塞いで構成されるプラスチック製の筒状
体よりなる型枠が用いられている。（特開平７−６８５
２４、特開平７−８３８１１）2. Description of the Related Art As a mold for molding a cylindrical test piece used for a strength test of concrete, a mold made of a plastic tubular body having one cylinder opening closed by a metal bottom plate is used. Have been. (JP-A-7-685
24, JP-A-7-83811)
【０００３】かかる型枠は、プラスチック材料を主体に
構成されることから、可能な限り軽量に構成することが
でき、取り扱いが容易であり、また、型枠内に打ち込ま
れたコンクリートを型枠内に万遍なく行きわたらせて円
柱状をなす供試体を適切に成形するために、コンクリー
トの打ち込み後型枠を木槌などで叩くなどしても型枠の
変形が生じ難く供試体を歪なく成形できる等の、種々の
利点を有している。[0003] Since such a mold is mainly composed of a plastic material, it can be constructed as light as possible, is easy to handle, and has a concrete poured into the mold. In order to properly form a cylindrical specimen by spreading it evenly, even after hitting concrete with a mallet or the like, the form is hardly deformed and the specimen is molded without distortion There are various advantages, such as possible.
【０００４】また、これらの型枠においては、該型枠を
構成する前記筒状体が、該筒状体の外側面において該筒
状体の一方の筒口から他方の筒口に向けて設けられた二
条の溝により区分された切取り筒壁部（切取り面部）を
直径方向両側に備えており、この切取り筒壁部を前記筒
状体に打ち込まれたコンクリートの硬化後前記溝に沿っ
て切離しながら硬化されたコンクリート、すなわち、供
試体表面から剥取ることにより、該筒状体を二つに分離
して該供試体表面から筒状体を容易に取り去ることがで
き、この結果、供試体の脱型を、該供試体を傷付けるこ
となく、容易に行うことができる。[0004] In these molds, the cylindrical body constituting the mold is provided on one outer surface of the cylindrical body from one cylindrical opening of the cylindrical body to the other cylindrical opening. A cutting cylinder wall section (cutting surface section) divided by two grooves is provided on both sides in the diametrical direction, and the cutting cylinder wall section is hardened while being cut along the groove after hardening of the concrete driven into the cylindrical body. Concrete, that is, by peeling off from the specimen surface, the tubular body can be separated into two and the tubular body can be easily removed from the specimen surface, and as a result, the specimen can be removed from the mold. Can be easily performed without damaging the specimen.
【０００５】[0005]
【発明が解決しようとする課題】しかるに、この種の型
枠においては、型枠の寸法誤差が、直径で２００分の
１、高さで１００分の１であることが要請されているた
め（ＪＩＳ規格番号Ａ１１３２−４．２．３）、特に、
打ち込まれたコンクリートを万遍なく行きわたらせるた
めに型枠を木槌などで叩くなどした場合であっても、か
かる寸法誤差をできる限り生じさせないように、型枠の
保形力をできる限り高める要請がある。However, in this type of mold, it is required that the dimensional error of the mold is 1/200 in diameter and 1/100 in height ( JIS standard number A1132-4.2.3), especially
Even if the formwork is hit with a mallet or the like in order to spread the poured concrete evenly, the form retention force of the formwork is increased as much as possible so as to minimize such dimensional errors There is a request.
【０００６】また、前記切取り筒壁部の切離、剥取りを
容易にする観点からは、該切取り筒壁部を構成させる二
条の溝を深く設けることが考えられるが、単純にかかる
溝を深く設けた場合、かかる溝を設けた位置で型枠を構
成する筒状体が湾曲等し易くなるため、型枠の保形力が
低下することが予想される。Further, from the viewpoint of facilitating the separation and peeling of the cut-off cylinder wall, it is conceivable to provide two grooves for forming the cut-off cylinder wall deep. In the case where the groove is provided, the cylindrical body forming the mold is likely to be curved or the like at the position where the groove is provided, so that the shape retaining force of the mold is expected to decrease.
【０００７】一方、かかる溝を比較的浅く設けた場合に
は、前記切取り筒壁部と筒状体の本体部との一体性が高
くなるため、型枠の保形力は高まるが、当該溝に沿った
該切取り筒壁部の切離、剥取りにあたり、該切取り筒壁
部と前記本体部とが該溝を挟んで切り分かれ難くなり、
この結果、該切取り筒壁部が前記切離、剥取りの過程で
途中で千切れる等する不都合が予想される。On the other hand, when such a groove is provided relatively shallow, the integrality between the cut-out cylindrical wall and the main body of the cylindrical body is increased, so that the shape-retaining force of the mold is increased. When separating and peeling the cut-off cylinder wall portion along, it becomes difficult for the cut-off cylinder wall portion and the main body portion to be cut across the groove,
As a result, the inconvenience that the cut-off cylinder wall portion is cut off in the course of the separation and peeling is expected.
【０００８】そこでこの発明は、第一に、プラスチック
製のこの種の型枠の保形力を高め、当該型枠の寸法誤差
を可能な限り少なくすることを目的とする。Accordingly, an object of the present invention is, first, to increase the shape-retaining force of a plastic mold of this type and to minimize the dimensional error of the mold.
【０００９】また、第二に、前記切取り筒壁部を区分す
る溝を深く設けなくとも、該切取り筒壁部の切離、剥取
りにあたり、該切取り筒壁部が千切れる等することがな
いようにして、この種の型枠の保形力を損なうことな
く、該切取り筒壁部の該切離、剥取りを容易かつ確実に
行えるようにすることを目的とする。Second, even if the groove for partitioning the cut-off cylinder wall is not provided deeply, the cut-off cylinder wall is not torn when the cut-off cylinder wall is cut off or peeled off. Thus, an object of the present invention is to easily and reliably perform the separation and peeling of the cut-off cylindrical wall portion without impairing the shape retaining force of this type of formwork.
【００１０】[0010]
【課題を解決するための手段】前記目的を達成するため
に、請求項１記載の発明では、コンクリート強度試験用
供試体成形型枠Ｋを、一方の筒口を塞ぐ底板２０を備え
るプラスチック製の筒状体１０であって、この筒状体１
０に、前記底板２０の設けられていない側の筒口から底
板２０の設けられている側の筒口に向けて、該筒状体１
０の外側面に設けられる少なくとも二条の溝１２、１２
により区分された切取り筒壁部１３を備えると共に、こ
の切取り筒壁部１３に、前記筒状体１０に打ち込まれた
コンクリートの硬化後、該切取り筒壁部１３を前記溝１
２に沿って切離しながら硬化されたコンクリート表面か
ら剥取る際に、該切離、剥取りにより該切取り筒壁部１
３を破断させない補強手段Ｒが備えられており、しか
も、この補強手段Ｒが、前記筒状体１０の外側にあっ
て、前記溝１２に沿うように切取り筒壁部１３に設けら
れたリブ１３ｂとしてあると共に、前記筒状体１０の前
記底板２０が設けられていない側の筒口部には、該筒状
体１０の外側に向けて突き出す鍔１５が設けてあり、こ
の鍔１５が、前記筒口を巡る方向に沿った補強リブ１５
ｂを備える構成のものとした。In order to achieve the above object, according to the first aspect of the present invention, a specimen forming mold K for a concrete strength test is provided with a plastic cylinder having a bottom plate 20 for closing one of the cylinder openings. The cylindrical body 1
0, the cylindrical body 1 is moved from the cylindrical opening on the side where the bottom plate 20 is not provided to the cylindrical opening on the side where the bottom plate 20 is provided.
0 at least two grooves 12, 12 provided on the outer surface
After the hardening of the concrete driven into the tubular body 10, the cut-out cylinder wall 13 is cut into the groove 1.
2, when peeling from the hardened concrete surface while separating along the cut, the cut cylindrical wall 1
3 is provided on the outer wall of the cylindrical body 10 and the rib 13b is provided on the cut-off cylindrical wall portion 13 along the groove 12. In addition, a flange 15 that protrudes toward the outside of the tubular body 10 is provided at a tubular mouth portion of the tubular body 10 on the side where the bottom plate 20 is not provided. Rib 15 along the direction of
b.
【００１１】[0011]
【発明の実施の形態】以下、図１ないし図１７に基づい
て、この発明の典型的な実施の形態について説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A typical embodiment of the present invention will be described below with reference to FIGS.
【００１２】この実施の形態にかかる型枠Ｋは、硬化し
たコンクリートの圧縮強度、引張り強度、曲げ強度など
の強度試験に用いる円柱状をなす供試体Ｔを成形するた
めに用いられる。この実施の形態にかかる型枠Ｋは、特
に、プラスチック材料を主体に構成されていることか
ら、可能な限り軽量に構成することができ、取扱が容易
であると共に、供試体Ｔの成形作業の過程において例え
ば作業者が自己の身体の一部に型枠Ｋを落下させる等し
ても、作業者にけがなどを負わせることが少なく、該成
形作業の安全性の向上に寄与しうる特長を有している。The formwork K according to this embodiment is used for forming a columnar specimen T used for strength tests such as compressive strength, tensile strength and bending strength of hardened concrete. Since the mold K according to this embodiment is mainly made of a plastic material, it can be made as lightweight as possible, and can be easily handled. In the process, for example, even if the worker drops the formwork K on a part of his / her body, the worker is less likely to be injured or the like, and has a feature that can contribute to improving the safety of the molding work. Have.
【００１３】すなわち、この実施の形態にかかる型枠Ｋ
は、一方の筒口を塞ぐ底板２０を備えるプラスチック製
の筒状体１０であって、この筒状体１０に、前記底板２
０の設けられていない側の筒口から底板２０の設けられ
ている側の筒口に向けて、該筒状体１０の外側面に設け
られる少なくとも二条の溝１２、１２により区分された
切取り筒壁部１３を備えている。That is, the mold K according to this embodiment
Is a plastic tubular body 10 provided with a bottom plate 20 that closes one of the tubular openings.
A cut-out cylindrical wall section defined by at least two grooves 12, 12 provided on the outer surface of the cylindrical body 10 from the cylindrical opening on which the bottom plate 20 is not provided to the cylindrical opening on which the bottom plate 20 is provided. 13 is provided.
【００１４】したがって、この実施の形態にかかる型枠
Ｋによれば、底板２０の設けられていない側の筒口から
前記筒状体１０内にまだ固まらないコンクリートを該型
枠Ｋ内に万遍なく行きわたるように打ち込み、硬化させ
た後、前記切取り筒壁部１３を前記溝１２に沿って切離
しながら硬化されたコンクリート、すなわち前記筒状体
１０の内側の形状に倣った円柱状をなす供試体Ｔ表面か
ら剥取ることにより、該筒状体１０を二つに分離して該
供試体Ｔ表面から筒状体１０を容易に取り去ることがで
き、この結果、供試体Ｔの脱型を、該供試体Ｔを傷付け
ることなく、容易に行うことができる。Therefore, according to the formwork K according to this embodiment, concrete that has not yet set in the cylindrical body 10 from the cylindrical opening on the side where the bottom plate 20 is not provided is uniformly placed in the formwork K. After being blown in and hardened, the hardened concrete is cut while separating the cut-off cylindrical wall portion 13 along the groove 12, that is, a cylindrical test object following the inner shape of the cylindrical body 10. By peeling off from the T surface, the cylindrical body 10 can be separated into two parts and the cylindrical body 10 can be easily removed from the surface of the specimen T. As a result, the demolding of the specimen T The test can be easily performed without damaging the specimen T.
【００１５】また、この実施の形態にかかる型枠Ｋは、
前記切取り筒壁部１３に、前記筒状体１０に打ち込まれ
たコンクリートの硬化後、該切取り筒壁部１３を前記溝
１２に沿って切離しながら硬化されたコンクリート表面
から剥取る際に、該切離、剥取りにより該切取り筒壁部
１３を破断させない補強手段Ｒを備えている。Further, the formwork K according to this embodiment is:
After the concrete poured into the tubular body 10 is hardened on the cut-off cylinder wall 13, when the cut-off cylinder wall 13 is peeled off from the hardened concrete surface while being cut off along the groove 12, the cutting is performed. There is provided a reinforcing means R which does not break the cut-off cylindrical wall portion 13 by separating and peeling.
【００１６】したがって、この実施の形態にかかる型枠
Ｋによれば、前記切取り筒壁部１３を区分、構成させる
二条の溝１２、１２を比較的浅く設けて前記切取り筒壁
部１３と筒状体１０の本体部との一体性を高くしても、
前記補強手段Ｒにより、当該溝に沿った該切取り筒壁部
１３の切離、剥取りにあたり、該切取り筒壁部１３が前
記切離、剥取りの過程で途中で千切れる等する事態をで
きる限り生じないようにすることができる。Therefore, according to the formwork K according to this embodiment, the two grooves 12, 12 for partitioning and forming the cut-out cylindrical wall portion 13 are provided relatively shallow, and the cut-out cylindrical wall portion 13 and the cylindrical shape are formed. Even if the unity with the body of the body 10 is increased,
By the reinforcing means R, when the cut-off cylindrical wall portion 13 is cut or peeled along the groove, a situation in which the cut-off cylindrical wall portion 13 is cut off in the middle of the cutting or peeling process can be performed. As long as it does not occur.
【００１７】すなわち、この実施の形態にかかる型枠Ｋ
によれば、前記溝１２を比較的浅く設けてこの溝１２の
設けられた位置での前記筒状体１０の湾曲等の変形がで
きるだけ生じないように、すなわち型枠Ｋの保形力をで
きる限り高く確保して、型枠Ｋの寸法精度、ひいては成
形される供試体Ｔの寸法精度を高く確保しながら、前記
切取り筒壁部１３の前記切離、剥取りを容易かつ確実に
行うことができる。That is, the mold K according to this embodiment
According to this, the groove 12 is provided relatively shallow so that deformation such as bending of the tubular body 10 at the position where the groove 12 is provided is minimized, that is, the shape retaining force of the mold K can be maintained. It is possible to easily and reliably perform the separation and peeling of the cut-off cylinder wall portion 13 while securing the dimensional accuracy of the mold K and the dimensional accuracy of the specimen T to be formed as high as possible. it can.
【００１８】かかる補強手段Ｒは、前記筒状体１０に打
ち込まれたコンクリートの硬化後、前記切取り筒壁部１
３を前記溝１２に沿って切離しながら硬化されたコンク
リート表面から剥取る際に、該切離、剥取りにより該切
取り筒壁部１３を破断させない構成を備えたものであれ
ば良く、典型的にはこの補強手段Ｒを、前記筒状体１０
の外側にあって、溝１２に沿うように切取り筒壁部１３
に設けられたリブ１３ｂとして構成することがこの発明
の最良の実施の形態の一つとされる。The reinforcing means R is provided for hardening the concrete poured into the cylindrical body 10 and then setting the cut-off cylindrical wall 1
When peeling off from the hardened concrete surface while separating 3 along the groove 12, any structure having a structure that does not break the cut-off cylindrical wall portion 13 by the separation and peeling may be used. The reinforcing means R is connected to the cylindrical body 10.
Outside, and cut out along the groove 12
It is considered as one of the best embodiments of the present invention to configure as the rib 13b provided in the first embodiment.
【００１９】また、この補強手段Ｒを、前記溝に沿うよ
うに前記切取り筒壁部１３内に埋設された金属線１６と
して構成することがこの発明の最良の実施の形態の一つ
とされる。かかる金属線１６は、前記型枠Ｋを構成する
筒状体１０をプラスチック材料を用いて成形する際に、
前記切取り筒壁部１３のインサートとすることにより、
該切取り筒壁部１３内に容易に埋設状態に設けることが
できる。It is one of the best embodiments of the present invention that the reinforcing means R is configured as a metal wire 16 buried in the cut-off tube wall 13 along the groove. Such a metal wire 16 is used when molding the cylindrical body 10 constituting the formwork K using a plastic material.
By using the insert of the cut-off tube wall portion 13,
It can be easily provided in the cut-out tube wall portion 13 so as to be buried.
【００２０】また、この補強手段Ｒを、前記切取り筒壁
部１３内に埋設された金属製メッシュ１７として構成す
ることがこの発明の最良の実施の形態の一つとされる。
かかる金属製メッシュ１７も、前記型枠Ｋを構成する筒
状体１０をプラスチック材料を用いて成形する際に、前
記切取り筒壁部１３のインサートとすることにより、該
切取り筒壁部１３内に容易に埋設状態に設けることがで
きる。It is one of the best embodiments of the present invention that the reinforcing means R is constituted as a metal mesh 17 embedded in the cut-off tube wall 13.
The metal mesh 17 is also used as an insert for the cut-out tube wall portion 13 when the cylindrical body 10 constituting the formwork K is formed using a plastic material, so that the metal mesh 17 is inserted into the cut-out tube wall portion 13. It can be easily provided in a buried state.
【００２１】また、型枠Ｋを、一方の筒口を塞ぐ底板２
０を備えるプラスチック製の筒状体１０であって、この
筒状体１０に、前記底板２０の設けられていない側の筒
口から底板２０の設けられている側の筒口に向けて、該
筒状体１０の外側面に設けられる少なくとも二条の溝１
２、１２により区分された切取り筒壁部１３を備えてい
る共に、この筒状体１０の前記底板２０が設けられてい
ない側の筒口部に、該筒状体１０の外側に向けて突き出
す鍔１５が設け、さらに、この鍔１５に前記筒口を巡る
方向に沿った補強リブ１５ｂを備えさせる構成とするこ
とが、この発明のさらに他の最良の実施の形態の一つと
される。Further, the mold K is connected to the bottom plate 2 for closing one of the cylindrical openings.
A cylindrical body 10 made of a plastic material, the cylindrical body 10 being provided with the cylindrical body 10 from the side where the bottom plate 20 is not provided to the side where the bottom plate 20 is provided. At least two grooves 1 provided on the outer surface of the body 10
A flange that projects toward the outside of the cylindrical body 10 at a cylindrical mouth portion of the cylindrical body 10 where the bottom plate 20 is not provided. A further preferred embodiment of the present invention has a configuration in which the flange 15 is provided, and the flange 15 is provided with a reinforcing rib 15b extending in a direction around the cylinder opening.
【００２２】かかる構成によれば、前記鍔１５および該
鍔１５に設けられた前記補強リブ１５ｂにより、型枠Ｋ
を構成する筒状体１０の直径方向に向けた変形を比較的
簡易な構成により効果的に阻止することができ、打ち込
まれたコンクリートを万遍なく行きわたらせるために該
型枠Ｋを木槌などで叩くなどした場合であっても型枠Ｋ
の変形を招き難く、型枠Ｋの寸法精度、ひいては成形さ
れる供試体Ｔの寸法精度を高く確保することができる。According to this configuration, the form 15 is formed by the flange 15 and the reinforcing rib 15b provided on the flange 15.
Can be effectively prevented by a relatively simple configuration, and the form K can be hammered in order to spread the poured concrete evenly. Form K even if you hit it with
Is hardly caused, and the dimensional accuracy of the mold K and the dimensional accuracy of the specimen T to be formed can be ensured high.
【００２３】なお、かかる構成を備える型枠Ｋにおける
切取り筒壁部１３に前記補強手段Ｒを備えさせて型枠Ｋ
を構成しても良く、また、この補強手段Ｒを前記筒状体
１０の外側にあって、前記溝１２に沿うように切取り筒
壁部１３に設けられたリブ１３ｂとして構成しても、ま
た、前記溝１２に沿うように前記切取り筒壁部１３内に
埋設された金属線１６として構成しても良く、さらに
は、前記切取り筒壁部１３内に埋設された金属製メッシ
ュ１７として構成しても良い。In addition, the reinforcing means R is provided on the cut-off cylindrical wall portion 13 of the mold K having the above-described structure so that the mold K
The reinforcing means R may be formed as a rib 13b provided on the cut-off cylindrical wall portion 13 outside the cylindrical body 10 and along the groove 12. It may be configured as a metal wire 16 buried in the cut-off tube wall 13 along the groove 12, and may be further formed as a metal mesh 17 buried in the cut-off tube wall 13. May be.
【００２４】次いで、図１ないし図１３に示される第一
の実施の形態にかかる型枠Ｋ−１について、詳細に説明
する。Next, the mold K-1 according to the first embodiment shown in FIGS. 1 to 13 will be described in detail.
【００２５】なお、ここで、図１は第一の実施の形態に
かかる型枠Ｋ−１の全体構成を理解し易いように、該型
枠Ｋ−１を斜め上方から見た状態で示しており、また、
図２は該型枠Ｋ−１を斜め下方からみた状態で示してい
る。また、図３はこの実施の形態にかかる型枠Ｋ−１内
に打ち込まれ、かつ、硬化されたコンクリート、すなわ
ち、供試体Ｔを型枠Ｋ−１内から取り出すにあたり、前
記切取り筒壁部１３の一部を前記溝１２に沿って切離、
剥取った状態を、該型枠Ｋ−１の斜め上方から見た状態
で示している。FIG. 1 shows the mold K-1 viewed obliquely from above, so that the entire structure of the mold K-1 according to the first embodiment can be easily understood. And also
FIG. 2 shows the mold K-1 as viewed obliquely from below. FIG. 3 shows the cut-out cylindrical wall portion 13 when the concrete T, which is driven into the formwork K-1 according to this embodiment and hardened, that is, the specimen T is taken out from the formwork K-1. Cut along the groove 12,
The peeled state is shown in a state viewed from obliquely above the formwork K-1.
【００２６】また、図４は、この実施の形態にかかる型
枠Ｋ−１の一部を破断した状態で、該型枠Ｋ−１を側方
から見て示しており、また、図５は該型枠Ｋ−１を平面
から見て、図６は該型枠Ｋ−１を側方から見て、また、
図７は図６を正面図とした場合に図６に示される型枠Ｋ
−１の右側から該型枠Ｋ−１を見て、また、図８は型枠
Ｋ−１を底面から見て、また、図９および図１０は型枠
Ｋ−１を縦断面として、また、図１１は型枠Ｋ−１を横
断面として、また、図１３は図５における要部を拡大し
て、それぞれ示している。FIG. 4 is a side view of the formwork K-1 according to the present embodiment, with a part of the formwork K-1 being broken, and FIG. FIG. 6 shows the mold K-1 viewed from the side, and FIG.
FIG. 7 shows a case K shown in FIG. 6 when FIG. 6 is a front view.
8, the mold K-1 is viewed from the bottom, and FIGS. 9 and 10 show the mold K-1 as a vertical section. 11 shows the mold K-1 as a cross section, and FIG. 13 shows an enlarged view of a main part in FIG.
【００２７】さらに、図１２は、この実施の形態にかか
る型枠Ｋ−１における前記切取り筒壁部１３が設けてあ
る箇所の構成を理解し易いように、該箇所を水平断面に
して示している。FIG. 12 is a horizontal sectional view of a portion of the formwork K-1 according to the present embodiment, in which the cut-out tube wall portion 13 is provided, so that the configuration can be easily understood. I have.
【００２８】第一の実施の形態にかかる型枠Ｋ−１は、
プラスチック材料を成形して形成される円筒状をなす筒
状体１０と、この筒状体１０の一方側の筒口を塞ぐ円板
状をなす金属製の底板２０とを主体に構成されている。The formwork K-1 according to the first embodiment is:
It is mainly composed of a cylindrical tubular body 10 formed by molding a plastic material, and a disc-shaped metal bottom plate 20 that closes a tubular opening on one side of the tubular body 10.
【００２９】前記底板２０の前記筒状体１０に対する組
み付けは、前記筒状体１０の一方の筒口部に該筒口部内
周に沿って設けられている内向きの鍔１１の該筒状体１
０の内側に向けられた鍔面１１ａに該底板２０の周縁面
２０ａを接するように、該底板２０を前記筒状体１０内
に入れ込んだ後に、該鍔１１と前記底板２０との接触面
の全部又は一部を止着して行う。The bottom plate 20 is assembled to the cylindrical body 10 by an inward flange 11 provided at one cylindrical opening of the cylindrical body 10 along the inner periphery of the cylindrical opening.
After the bottom plate 20 is inserted into the tubular body 10 so that the peripheral surface 20a of the bottom plate 20 is in contact with the flange surface 11a facing the inside of the cylinder 10, the contact surface between the flange 11 and the bottom plate 20 All or a part of the above is fixed.
【００３０】この止着は、該接触面からのコンクリート
や水の漏れ出しを防止するため、前記鍔面１１ａと前記
底板２０の周縁面２０ａとの接触箇所を水密に溶着、接
着等するか、あるいは、前記底板２０の周縁面２０ａと
前記鍔１１近傍の前記筒状体１０の内面との接触箇所を
水密に溶着、接着等して行われる。水密性をより高める
見地からは、この両接触箇所とも溶着等して前記止着を
行うことが好ましい。In order to prevent concrete or water from leaking from the contact surface, the fixing is performed by water-tightly welding or bonding the contact portion between the flange surface 11a and the peripheral surface 20a of the bottom plate 20, Alternatively, the contact is performed by water-tightly welding or bonding a contact portion between the peripheral surface 20a of the bottom plate 20 and the inner surface of the tubular body 10 near the flange 11. From the viewpoint of further improving the watertightness, it is preferable to perform the fastening by welding or the like to both of the contact points.
【００３１】なお、本明細書にいう溶着は、高周波、超
音波を前記接触箇所近傍に照射して、該箇所のプラスチ
ックの一部を溶融させた後硬化させて前記底板２０との
止着を行う手段、該底板２０を過熱状態におき、前記接
触箇所のプラスチックの一部を溶融させた後硬化させて
該底板２０との止着を行う手段等のプラスチックの溶融
を利用した種々の止着手段を意味する。また、本明細書
にいう接着には、前記の意味での溶着は含まず、種々の
接着剤を用いた前記接触箇所の止着手段を意味する。The welding in this specification is performed by irradiating high frequency and ultrasonic waves to the vicinity of the contact area to melt a part of the plastic at the area and then to cure the plastic to fix the plastic to the bottom plate 20. Various fixing methods utilizing the melting of the plastics, such as a means for performing the fixing, such as a method for placing the bottom plate 20 in an overheated state, melting a part of the plastic at the contact portion, and then hardening to fix the plastic to the bottom plate 20. Means means. Further, the term “adhesion” as used in the present specification does not include welding in the above-mentioned meaning, but means means for fixing the contact portion using various adhesives.
【００３２】また、前記筒状体１０の直径方向両側に
は、該筒状体１０の前記底板２０が設けられていない他
方の筒口、すなわち上部筒口縁から、前記底板２０で塞
がれている前記筒状体１０の下部筒口縁に向けて、一対
の切取り筒壁部１３、１３が形成されている。On both sides of the cylindrical body 10 in the diametrical direction, the other end of the cylindrical body 10 where the bottom plate 20 is not provided, that is, the upper end of the upper cylindrical end is closed by the bottom plate 20. A pair of cut-off cylindrical wall portions 13 is formed toward the lower cylindrical edge of the cylindrical body 10.
【００３３】この切取り筒壁部１３は、前記筒状体１０
の上部筒口縁から下部筒口縁近傍に至る長さを有し、か
つ、該筒状体１０の筒軸に沿って該筒状体１０の外周面
側から刻み設けられている二条の溝１２、１２により前
記筒状体１０の他の周面部１４から区分されて設けられ
ている。この実施の形態では、該二条の溝１２、１２は
ほぼ平行に設けられており、したがって前記切取り筒壁
部１３の幅寸法は前記筒状体１０のいずれの箇所でもほ
ぼ同寸法とされている。The cut-off cylindrical wall portion 13 is provided on the cylindrical body 10.
A double groove 12 having a length extending from the upper cylindrical edge to the vicinity of the lower cylindrical edge, and being provided along the cylindrical axis of the cylindrical body 10 from the outer peripheral surface side of the cylindrical body 10; The cylindrical body 10 is provided by being separated from another peripheral surface part 14 of the cylindrical body 10 by 12. In this embodiment, the two grooves 12, 12 are provided substantially in parallel, so that the width of the cut-out cylindrical wall portion 13 is substantially the same at any position of the cylindrical body 10. .
【００３４】また、図５および図１３に特に示されるよ
うに、前記溝１２はその断面形状において、該溝１２の
一方の溝側面１２ａと他方の溝側面１２ｂとをその溝底
１２ｃ側で接させており、溝底１２ｃを鋭角状に形成し
ている。As particularly shown in FIGS. 5 and 13, the groove 12 has a sectional shape in which one side surface 12a of the groove 12 and the other side surface 12b of the groove 12 are connected on the side of the groove bottom 12c. The groove bottom 12c is formed at an acute angle.
【００３５】また、前記筒状体１０の上部筒口に接する
前記切取り筒壁部１３の縁部には、前記筒状体１０の外
方に向けて突き出し、かつ、前記筒状体１０の外周面に
ほぼ直交する面をもった舌片１３ａが前記切取り筒壁部
１３とほぼ同じ幅寸法に形成されている。該舌片１３ａ
には、その肉厚方向に向けて穴１３ａ’が透設されてい
る。この穴１３ａ’は、該舌片１３ａを把持などし易く
する目的で設けられている。An outer peripheral surface of the cylindrical body 10 protrudes outward from the cylindrical body 10 at an edge of the cut-off cylindrical wall portion 13 which is in contact with an upper cylindrical opening of the cylindrical body 10. A tongue piece 13a having a surface substantially perpendicular to the cutout is formed to have substantially the same width as the cut-out cylindrical wall portion 13. The tongue piece 13a
Is provided with a hole 13a 'in its thickness direction. The hole 13a 'is provided for the purpose of facilitating the gripping of the tongue piece 13a.
【００３６】ここで、この実施の形態にあっては、前記
切取り筒壁部１３における前記二条の溝１２、１２に接
する箇所に、この溝に沿うように一対のリブ１３ｂ、１
３ｂが設けてある。また、前記切取り筒壁部１３の一端
部に設けられた前記舌片１３ａにも、該舌片１３ａにお
ける前記筒状体１０の下部筒口側に向けられた面に、こ
の舌片１３ａの縁部を巡るようにリブ１３ｃが設けられ
ており、該舌片１３ａと切取り筒壁部１３との連設位置
において、この舌片１３ａに設けられているリブ１３ｃ
と前記切取り筒壁部１３に設けられているリブ１３ｂと
もまた連設されている。In the present embodiment, a pair of ribs 13b, 1b, 1b,
3b is provided. In addition, the tongue piece 13a provided at one end of the cut-off cylindrical wall portion 13 also has an edge portion of the tongue piece 13a on the surface of the tongue piece 13a facing the lower cylinder mouth side of the tubular body 10. The rib 13c is provided on the tongue 13a at a position where the tongue 13a and the cut-off cylindrical wall portion 13 are connected.
And the rib 13b provided on the cut-off tube wall 13 are also connected.
【００３７】また、前記筒状体１０の上部筒口縁には、
前記舌片１３ａが設けられている箇所を除いて、該上部
筒口を巡る外向の鍔１５が周設されている。Also, at the rim of the upper cylinder of the cylindrical body 10,
Except for the location where the tongue piece 13a is provided, an outward flange 15 surrounding the upper cylindrical port is provided.
【００３８】ここでこの実施の形態においては、前記舌
片１３ａの前記筒状体１０の周方向に向けられた両側縁
１３ａ”、１３ａ”と、該舌片１３ａに向けられた前記
鍔１５の縁１５ａとの間に連結片１５ｄが架設されてい
ると共に、前記鍔１５における前記筒状体１０の下部筒
口側に向けられた面に、該鍔１５の先端縁に沿った補強
リブ１５ｂが設けてある。また、この鍔１５の先端縁に
沿って設けられた補強リブ１５ｂにおける前記鍔１５の
前記舌片１３ａに向き合った両側縁１５ａ、１５ａ部お
よび該鍔１５の長さ方向略中程の位置と、該鍔１５の突
き出し基部面との間には、前記筒状体１０の直径方向に
向けられた連結リブ１５ｃ、１５ｃ…がそれぞれ設けら
れている。In this embodiment, both side edges 13a ", 13a" of the tongue piece 13a directed in the circumferential direction of the tubular body 10 and the flange 15 directed to the tongue piece 13a are formed. A connection piece 15d is provided between the flange 15a and the flange 15 and a reinforcing rib 15b is provided on a surface of the flange 15 facing the lower cylindrical opening of the tubular body 10 along a leading edge of the flange 15. It is. In addition, in the reinforcing rib 15b provided along the leading edge of the flange 15, both side edges 15a and 15a of the flange 15 facing the tongue piece 13a and a position substantially in the middle in the length direction of the flange 15, Connecting ribs 15c, 15c,..., Which are directed in the diametrical direction of the cylindrical body 10, are provided between the flange 15 and the protruding base surface.
【００３９】一方、前記筒状体１０における前記鍔１５
が設けられていない側の筒口部には、前記底板２０が設
けられていることから、該筒状体１０は、上部筒口側で
前記鍔１５および補強リブ１５ｂにより特に直径方向に
向けた変形を生じ難いものとされると共に、下部筒口側
においては該底板２０により特に直径方向に向けた変形
を生じ難いものとされ、この結果、該筒状体１０の保形
力が全体として高められている。On the other hand, the flange 15 in the cylindrical body 10
Since the bottom plate 20 is provided at the cylindrical opening on the side where is not provided, the cylindrical body 10 is deformed particularly in the diametrical direction by the flange 15 and the reinforcing rib 15b on the upper cylindrical opening side. At the same time, the bottom plate 20 is less likely to be deformed particularly in the diametrical direction on the lower cylinder mouth side, and as a result, the shape retaining force of the cylindrical body 10 is increased as a whole. .
【００４０】なお、前記切取り筒壁部１３の外周面は、
適宜の目盛りを設ける構成としても良い。この場合に
は、プラスチックは透光性を有することから、前記筒状
体１０の内部に打ち込んだコンクリートの量を前記筒状
体１０の外側から前記目盛りを利用し容易かつ的確に視
認することができる。これによりＪＩＳ規格の要請であ
る、略等しい層に分けてのコンクリートの型枠Ｋ内への
打ち込みを適切に実施することができる。（ＪＩＳ規格
番号Ａ１１３２−４．３．１参照）The outer peripheral surface of the cut-off cylindrical wall portion 13 is
A configuration in which an appropriate scale is provided may be adopted. In this case, since the plastic has translucency, the amount of concrete poured into the inside of the tubular body 10 can be easily and accurately visually recognized from the outside of the tubular body 10 using the scale. it can. This makes it possible to appropriately perform the concrete casting into the formwork K divided into substantially equal layers as required by the JIS standard. (See JIS standard number A1132-4.3.1)
【００４１】このように構成される有底の筒状体１０の
内部にＪＩＳ規格に従ってコンクリートを打ち込み、硬
化させることで、円柱状の供試体Ｔが成形される。Concrete is driven into the inside of the bottomed cylindrical body 10 having the above-described configuration in accordance with the JIS standard and hardened, whereby a columnar specimen T is formed.
【００４２】成形された供試体Ｔは、図３に示されるよ
うに、前記筒状体１０の二か所に設けられている前記切
取り筒壁部１３を、前記溝１２に沿って切離し、かつ、
該供試体Ｔ表面から剥取ることにより、該筒状体１０の
周面部１４を二つに分割し、この後、分割された夫々の
周面部１４、１４を該供試体Ｔ表面から剥ぎ取ることに
より、型枠Ｋ内から取り出される。As shown in FIG. 3, the molded specimen T cuts off the cut-off tube wall 13 provided at two places of the tube 10 along the groove 12, and ,
By peeling off from the surface of the specimen T, the peripheral surface 14 of the cylindrical body 10 is divided into two parts, and thereafter, the divided peripheral parts 14, 14 are peeled off from the surface of the specimen T. Is taken out of the formwork K.
【００４３】かかる切取り筒壁部１３の切離、剥取り
は、前記舌片１３ａを把持したまま、前記筒状体１０の
下方に向けて引っ張ることにより、前記舌片１３ａと前
記鍔１５との間に架設されている前記連結片１５ｄを断
ち切ると共に、前記溝１２に沿って該切取り筒壁部１３
と前記筒状体１０の他の周面部１４とを切り離して行わ
れる。The separation and peeling of the cut-off cylindrical wall portion 13 is performed by pulling the tongue piece 13a and the flange 15 downward while holding the tongue piece 13a while pulling the tubular body 10 downward. The connecting piece 15d is cut off along the groove 12 and the cut-off cylindrical wall portion 13 is cut along the groove 12.
And the other peripheral surface portion 14 of the tubular body 10 is separated.
【００４４】ここで、この実施の形態にあっては、前記
溝１２の溝底１２ｃ側は断面鋭角状に形成されているの
で、前記切取り筒壁部１３を前記筒状体１０の下方に向
けて引っ張った場合、該溝１２の溝底１２ｃと前記筒状
体１０の内周面との間の該筒状体１０の肉厚部に前記引
っ張りにより生じた応力が集中し易く、前記切取り筒壁
部１３の切取りが容易に行える。In this embodiment, since the groove bottom 12c side of the groove 12 is formed to have an acute angle in cross section, the cut-out cylindrical wall portion 13 is directed downwardly of the cylindrical body 10. When pulled, the stress generated by the pulling tends to concentrate on the thick portion of the tubular body 10 between the groove bottom 12c of the groove 12 and the inner peripheral surface of the tubular body 10, so that the cutting cylinder The wall 13 can be easily cut off.
【００４５】また、前記切取り筒壁部１３の切取りを一
層容易ならしめるために、前記溝１２の溝底１２ｃにさ
らにカッターナイフ等で切込をつける場合にも、前記溝
１２は溝底１２ｃを鋭角状とすることから、かかるナイ
フ等の刃先を該溝１２内に呼び込み易く、また的確に溝
底１２ｃに切り込みをつけさせることができる特長を有
する。In order to further facilitate the cutting of the cut-off cylindrical wall portion 13, even when a cut is made in the groove bottom 12c of the groove 12 with a cutter knife or the like, the groove 12 is formed by cutting the groove bottom 12c. Due to the acute angle, the cutting edge of such a knife or the like can be easily called into the groove 12 and the groove bottom 12c can be cut precisely.
【００４６】また、この実施の形態にかかる型枠Ｋでは
特に、金属等に比べて塑性変形しにくい反面弾性変形を
しやすいプラスチック材料より前記筒状体１０を構成し
ているので、このコンクリートの打ち込みにあたりコン
クリートが収納空間内に満遍なく行きわたるように木槌
等により前記筒状体１０等を叩いても該筒状体１０等が
変形してしまうことがなく、該筒状体１０等の変形に起
因する供試体Ｔの歪み、損傷等を起こすことがない。In the formwork K according to this embodiment, the cylindrical body 10 is made of a plastic material which is less likely to be plastically deformed than metal or the like, but is easily elastically deformed. Even when the cylindrical body 10 is hit with a mallet or the like so that the concrete spreads evenly in the storage space during the driving, the cylindrical body 10 is not deformed, and the deformation of the cylindrical body 10 is prevented. Does not cause distortion, damage, etc. of the specimen T.
【００４７】また、コンクリートはプラスチックに付着
しにくい性質を有することから、鉱物性の油等の離形材
を前記型枠Ｋ内面に塗付等しなくとも、供試体Ｔの脱型
に格別の支障を生じさせない。また仮に、供試体Ｔの表
面と前記筒状体１０の内面とが経時的に接着した状態と
なっていても、前記切取り筒壁部１３の切取りにより分
離された前記筒状体１０のそれぞれの周面部１４、１４
を外側に撓ませることで容易に供試体Ｔの表面より前記
筒状体１０を剥すことができ、供試体Ｔの成形作業をス
ムーズに行うことができる。Further, since concrete has a property of hardly adhering to plastic, even if a mold release material such as a mineral oil is not applied to the inner surface of the mold K, it is particularly suitable for removing the specimen T from the mold. Does not cause trouble. Even if the surface of the test piece T and the inner surface of the cylindrical body 10 are adhered with time, even if each of the cylindrical bodies 10 separated by the Peripheral parts 14, 14
Is bent outward, the cylindrical body 10 can be easily peeled off from the surface of the specimen T, and the molding of the specimen T can be performed smoothly.
【００４８】また、この実施の形態にかかる型枠Ｋは、
前記切取り筒壁部１３に、前記リブ１３ｂを備えている
ことから、前記切取り筒壁部１３を区分、構成させる二
条の溝１２、１２を比較的浅く設けて前記切取り筒壁部
１３と筒状体１０の本体部との一体性を高くしても、こ
のリブ１３ｂにより、当該溝に沿った該切取り筒壁部１
３の切離、剥取りにあたり、該切取り筒壁部１３が前記
切離、剥取りの過程で途中で千切れる等する事態をでき
る限り生じないようにすることができる。The formwork K according to this embodiment is
Since the cut-out tube wall portion 13 is provided with the ribs 13b, the cut-out tube wall portion 13 is formed to be relatively shallow with two grooves 12 and 12 for dividing and forming the cut-out tube wall portion 13. Even if the integrity of the body 10 with the main body is increased, the rib 13b allows the cut-off cylindrical wall 1 along the groove to be formed.
In cutting and stripping 3, the cutting cylinder wall 13 can be prevented from being broken as much as possible in the course of cutting and stripping.
【００４９】したがって、この実施の形態にかかる型枠
Ｋによれば、前記溝１２を比較的浅く設けてこの溝１２
の設けられた位置での前記筒状体１０の湾曲等の変形が
できるだけ生じないように、すなわち型枠Ｋの保形力を
できる限り高く確保して、型枠Ｋの寸法精度、ひいては
成形される供試体Ｔの寸法精度を高く確保しながら、前
記切取り筒壁部１３の前記切離、剥取りを容易かつ確実
に行うことができる。Therefore, according to the formwork K of this embodiment, the groove 12 is provided relatively shallow,
In order to minimize the deformation such as bending of the cylindrical body 10 at the position where the shape is provided, that is, to secure the shape retaining force of the form K as high as possible, and to obtain the dimensional accuracy of the form K, The separation and peeling of the cut-off cylindrical wall portion 13 can be easily and reliably performed while ensuring high dimensional accuracy of the test specimen T.
【００５０】なお、前記筒状体１０に設けられている切
取り筒壁部１３は、前記実施の形態の態様に限られるこ
となく、例えば、前記筒状体１０の上部筒口縁側から下
部筒口縁側に向けて、前記切取り筒壁部１３を形成させ
る前記二条の溝１２、１２が互いに近づくように設け、
前記筒状体１０の上部側から下部側に向かって次第に前
記切取り筒壁部１３の幅寸法が小さくなるように構成し
ても良い。また、前記二条の溝１２、１２を前記筒状体
１０の外周面につる巻き状に設けて前記切取り筒壁部１
３を構成しても良い。さらに、前記筒状体１０の外周面
に三か所以上の前記切取り筒壁部１３を設けて構成して
も良い。The cut-out cylindrical wall portion 13 provided on the cylindrical body 10 is not limited to the embodiment described above. For example, the cut-off cylindrical wall portion 13 may extend from the upper cylindrical edge of the cylindrical body 10 to the lower cylindrical edge. Toward, the two grooves 12, 12 for forming the cut-off cylindrical wall portion 13 are provided so as to approach each other,
The width of the cut-off cylindrical wall 13 may be gradually reduced from the upper side to the lower side of the cylindrical body 10. In addition, the two grooves 12, 12 are provided in a helical shape on the outer peripheral surface of the cylindrical body 10 so that the cut-out cylindrical wall portion 1 is formed.
3 may be configured. Further, the outer peripheral surface of the tubular body 10 may be provided with three or more cut-out tubular wall portions 13.
【００５１】次いで、図１４および図１５に示される第
二の実施の形態に係る型枠Ｋ−２について説明する。Next, a mold K-2 according to a second embodiment shown in FIGS. 14 and 15 will be described.
【００５２】なお、ここで、図１４は第二の実施の形態
にかかる型枠Ｋ−２の全体構成を理解し易いように、該
型枠Ｋ−２を斜め上方から見た状態で示しており、ま
た、図１５はこの実施の形態にかかる型枠Ｋ−２におけ
る前記切取り筒壁部１３が設けてある箇所の構成を理解
し易いように、該箇所を水平断面にして示している。FIG. 14 shows the form K-2 viewed obliquely from above so that the entire structure of the form K-2 according to the second embodiment can be easily understood. FIG. 15 shows a horizontal section of the portion of the formwork K-2 according to this embodiment in which the cut-out tube wall portion 13 is provided so as to make it easy to understand the configuration.
【００５３】また、この第二の実施の形態においては、
第一の実施の形態にかかる型枠Ｋ−１の前記切取り筒壁
部１３の補強手段Ｒを、この第一の実施の形態と異なる
ものとしており、その余の構造はこの第一の実施の形態
と同一または実質的に同一のものとするので、同一また
は実質的に同一の構造部分には前記第一の実施の形態を
表した図１ないし図１３に付した番号と同一の番号を付
してその説明を省略する。In the second embodiment,
The reinforcing means R of the cut-off tube wall 13 of the formwork K-1 according to the first embodiment is different from that of the first embodiment, and the remaining structure is the same as that of the first embodiment. Since they are the same or substantially the same as the embodiments, the same or substantially the same structural parts are denoted by the same reference numerals as those shown in FIGS. 1 to 13 showing the first embodiment. The description is omitted.
【００５４】この実施の形態にかかる型枠Ｋ−２におい
ては、前記切取り筒壁部１３の補強手段Ｒを、前記溝１
２に沿うように前記切取り筒壁部１３内に埋設された金
属線１６として構成している。かかる金属線１６は、前
記型枠Ｋ−２を構成する筒状体１０をプラスチック材料
を用いて成形する際に、前記切取り筒壁部１３のインサ
ートとすることにより、該切取り筒壁部１３内に埋設状
態に設けられる。In the form K-2 according to this embodiment, the reinforcing means R of the cut-off cylindrical wall portion 13 is replaced with the groove 1.
2 is formed as a metal wire 16 buried in the cut-off tube wall 13. The metal wire 16 is used as an insert for the cut-out tube wall portion 13 when the cylindrical body 10 forming the formwork K-2 is molded using a plastic material, so that the inside of the cut-out tube wall portion 13 is formed. Provided in a buried state.
【００５５】したがって、この実施の形態にかかる型枠
Ｋ−２においては、前記切取り筒壁部１３に備えられた
前記金属線１６により、前記切取り筒壁部１３を区分、
構成させる二条の溝１２、１２を比較的浅く設けて前記
切取り筒壁部１３と筒状体１０の本体部との一体性を高
くしても、当該溝１２に沿った該切取り筒壁部１３の切
離、剥取りにあたり、該切取り筒壁部１３が前記切離、
剥取りの過程で途中で千切れる等する事態をできる限り
生じないようにすることができる。Therefore, in the formwork K-2 according to this embodiment, the cut-out tube wall 13 is divided by the metal wire 16 provided on the cut-out tube wall 13.
Even if the two grooves 12, 12 to be constituted are provided relatively shallow to increase the integration between the cut-out cylindrical wall portion 13 and the main body of the cylindrical body 10, the cut-off cylindrical wall portion 13 along the groove 12 is formed. In cutting off and peeling off, the cutting cylinder wall portion 13
In the stripping process, it is possible to prevent a situation such as breakage in the middle as much as possible.
【００５６】この結果、この実施の形態にかかる型枠Ｋ
−２によっても、前記溝１２を比較的浅く設けてこの溝
１２の設けられた位置での前記筒状体１０の湾曲等の変
形ができるだけ生じないように、すなわち型枠Ｋ−２の
保形力をできる限り高く確保して、型枠Ｋ−２の寸法精
度、ひいては成形される供試体Ｔの寸法精度を高く確保
しながら、前記切取り筒壁部１３の前記切離、剥取りを
容易かつ確実に行うことができる。As a result, the mold K according to this embodiment is
According to -2, the groove 12 is provided relatively shallow so that deformation such as bending of the cylindrical body 10 at the position where the groove 12 is provided is minimized, that is, the shape preservation of the mold K-2. The separation and peeling of the cut-off cylinder wall portion 13 is easily and easily performed while securing the force as high as possible to secure the dimensional accuracy of the mold K-2 and the dimensional accuracy of the specimen T to be formed. It can be done reliably.
【００５７】次いで、図１６および図１７に示される第
三の実施の形態に係る型枠Ｋ−３について説明する。Next, a mold K-3 according to a third embodiment shown in FIGS. 16 and 17 will be described.
【００５８】なお、ここで、図１６は第三の実施の形態
にかかる型枠Ｋ−３の全体構成を理解し易いように、該
型枠Ｋ−３を斜め上方から見た状態で示しており、ま
た、図１７はこの実施の形態にかかる型枠Ｋ−３におけ
る前記切取り筒壁部１３が設けてある箇所の構成を理解
し易いように、該箇所を水平断面にして示している。FIG. 16 shows the form K-3 viewed obliquely from above so that the entire structure of the form K-3 according to the third embodiment can be easily understood. FIG. 17 shows a horizontal cross section of the portion of the formwork K-3 according to the present embodiment, in which the cutout cylindrical wall portion 13 is provided, so that the configuration is easy to understand.
【００５９】なお、この第三の実施の形態においては、
第一の実施の形態にかかる型枠Ｋ−１の前記切取り筒壁
部１３の補強手段Ｒを、この第一の実施の形態と異なる
ものとしており、その余の構造はこの第一の実施の形態
と同一または実質的に同一のものとするので、同一また
は実質的に同一の構造部分には前記第一の実施の形態を
表した図１ないし図１３に付した番号と同一の番号を付
してその説明を省略する。In the third embodiment,
The reinforcing means R of the cut-off tube wall 13 of the formwork K-1 according to the first embodiment is different from that of the first embodiment, and the remaining structure is the same as that of the first embodiment. Since they are the same or substantially the same as the embodiments, the same or substantially the same structural parts are denoted by the same reference numerals as those shown in FIGS. 1 to 13 showing the first embodiment. The description is omitted.
【００６０】この実施の形態にかかる型枠Ｋ−３におい
ては、前記切取り筒壁部１３の補強手段Ｒを、該切取り
筒壁部１３内に埋設された金属製メッシュ１７として構
成している。かかる金属製メッシュ１７は、前記型枠Ｋ
−３を構成する筒状体１０をプラスチック材料を用いて
成形する際に、前記切取り筒壁部１３のインサートとす
ることにより、該切取り筒壁部１３内に埋設状態に設け
られる。In the formwork K-3 according to this embodiment, the reinforcing means R of the cut-out tube wall 13 is configured as a metal mesh 17 embedded in the cut-out tube wall 13. The metal mesh 17 is formed by the mold K
When the cylindrical body 10 constituting -3 is formed using a plastic material, the cylindrical body 10 is provided as an insert in the cut-out tube wall portion 13 so as to be embedded in the cut-out tube wall portion 13.
【００６１】したがって、この実施の形態にかかる型枠
Ｋ−３においても、前記切取り筒壁部１３に備えられる
前記金属製メッシュ１７により、前記切取り筒壁部１３
を区分、構成させる二条の溝１２、１２を比較的浅く設
けて前記切取り筒壁部１３と筒状体１０の本体部との一
体性を高くしても、当該溝１２に沿った該切取り筒壁部
１３の切離、剥取りにあたり、該切取り筒壁部１３が前
記切離、剥取りの過程で途中で千切れる等する事態をで
きる限り生じないようにすることができる。Accordingly, also in the formwork K-3 according to this embodiment, the metal mesh 17 provided on the cut-off cylinder wall 13 allows the cut-off cylinder wall 13 to be used.
Even if the two grooves 12, 12 for dividing and configuring the cutting cylinder are provided relatively shallow to increase the integration between the cutting cylinder wall 13 and the main body of the cylindrical body 10, the cutting cylinder along the groove 12 When separating and peeling off the wall portion 13, it is possible to minimize the occurrence of a situation in which the cut-off cylindrical wall portion 13 is cut off in the middle of the cutting and peeling process.
【００６２】この結果、この実施の形態にかかる型枠Ｋ
−３によっても、前記溝１２を比較的浅く設けてこの溝
１２の設けられた位置での前記筒状体１０の湾曲等の変
形ができるだけ生じないように、すなわち型枠Ｋ−３の
保形力をできる限り高く確保して、型枠Ｋ−３の寸法精
度、ひいては成形される供試体Ｔの寸法精度を高く確保
しながら、前記切取り筒壁部１３の前記切離、剥取りを
容易かつ確実に行うことができる。As a result, the mold K according to this embodiment is
According to -3, the groove 12 is provided relatively shallow so that deformation such as bending of the cylindrical body 10 at the position where the groove 12 is provided is minimized, that is, the shape preservation of the mold K-3. The separation and peeling of the cut-off cylinder wall portion 13 is easily and easily performed while securing the force as high as possible to secure the dimensional accuracy of the formwork K-3 and the dimensional accuracy of the specimen T to be formed. It can be done reliably.
【００６３】[0063]
【発明の効果】請求項１記載の型枠Ｋは、前記切取り筒
壁部１３に、前記筒状体１０に打ち込まれたコンクリー
トの硬化後、該切取り筒壁部１３を前記溝１２に沿って
切離しながら硬化されたコンクリート表面から剥取る際
に、該切離、剥取りにより該切取り筒壁部１３を破断さ
せない補強手段Ｒを備えていることから、該切取り筒壁
部１３を区分、構成させる二条の溝１２、１２を比較的
浅く設けて前記切取り筒壁部１３と筒状体１０の本体部
との一体性を高くしても、前記補強手段Ｒにより、当該
溝１２に沿った該切取り筒壁部１３の切離、剥取りにあ
たり、該切取り筒壁部１３が前記切離、剥取りの過程で
途中で千切れる等する事態をできる限り生じないように
することができる。According to the first aspect of the present invention, in the formwork K, the concrete cut into the cylindrical body is hardened on the cut-off cylindrical wall portion and the cut-off cylindrical wall portion is moved along the groove. When peeling from the hardened concrete surface while separating, the reinforcing member R is provided so as not to break the cutting cylinder wall portion 13 by the separation and peeling, so that the cutting cylinder wall portion 13 is divided and configured. Even if the two grooves 12, 12 are provided relatively shallow to increase the integrity of the cut-out cylindrical wall portion 13 and the main body of the cylindrical body 10, the cut-off along the groove 12 is performed by the reinforcing means R. When separating and peeling the cylindrical wall portion 13, it is possible to prevent the cut cylindrical wall portion 13 from being cut off in the middle of the separating and peeling process as much as possible.
【００６４】すなわち、この発明にかかる型枠Ｋによれ
ば、前記溝１２を比較的浅く設けてこの溝１２の設けら
れた位置での前記筒状体１０の湾曲等の変形ができるだ
け生じないように、すなわち型枠Ｋの保形力をできる限
り高く確保して、型枠Ｋの寸法精度、ひいては成形され
る供試体Ｔの寸法精度を高く確保しながら、前記切取り
筒壁部１３の前記切離、剥取りを容易かつ確実に行うこ
とができる。That is, according to the formwork K of the present invention, the groove 12 is provided relatively shallow so that deformation such as bending of the cylindrical body 10 at the position where the groove 12 is provided is minimized. In other words, while ensuring the shape retaining force of the formwork K as high as possible, and ensuring the dimensional accuracy of the formwork K and thus the dimensional accuracy of the specimen T to be formed, the cutting of the cut-off cylindrical wall portion 13 is performed. Separation and peeling can be performed easily and reliably.
【００６５】また、請求項１記載の型枠Ｋにあっては、
前記筒状体１０の前記底板２０が設けられていない側の
筒口部に、該筒状体１０の外側に向けて突き出す鍔１５
が設けてあると共に、この鍔１５に前記筒口を巡る方向
に沿った補強リブ１５ｂを備えることから、当該補強リ
ブ１５ｂにより、型枠Ｋを構成する筒状体１０の直径方
向に向けた変形を比較的簡易な構成により効果的に阻止
することができ、打ち込まれたコンクリートを万遍なく
行きわたらせるために該型枠Ｋを木槌などで叩くなどし
た場合であっても型枠Ｋの変形を招き難く、型枠Ｋの寸
法精度、ひいては成形される供試体Ｔの寸法精度を高く
確保することができる。Further, in the formwork K according to the first aspect,
A flange 15 protruding toward the outside of the cylindrical body 10 is provided at a cylindrical opening on the side of the cylindrical body 10 where the bottom plate 20 is not provided.
Is provided, and the flange 15 is provided with a reinforcing rib 15b extending in a direction around the cylindrical opening, so that the reinforcing rib 15b prevents the cylindrical body 10 forming the formwork K from deforming in the diameter direction. It can be effectively prevented by a relatively simple configuration, and even when the form K is hit with a mallet or the like in order to spread the poured concrete evenly, the form K is deformed. And the dimensional accuracy of the mold K and the dimensional accuracy of the specimen T to be formed can be ensured high.
【図１】第一の実施の形態にかかる型枠Ｋ−１の一部破
断斜視図FIG. 1 is a partially broken perspective view of a mold K-1 according to a first embodiment.
【図２】第一の実施の形態にかかる型枠Ｋ−１の斜視図FIG. 2 is a perspective view of a mold K-1 according to the first embodiment;
【図３】第一の実施の形態にかかる型枠Ｋ−１の使用状
態を示す斜視図FIG. 3 is a perspective view showing a use state of the mold K-1 according to the first embodiment;
【図４】第一の実施の形態にかかる型枠Ｋ−１の一部破
断側面図FIG. 4 is a partially cutaway side view of the mold K-1 according to the first embodiment.
【図５】第一の実施の形態にかかる型枠Ｋ−１の平面図FIG. 5 is a plan view of the mold K-1 according to the first embodiment;
【図６】第一の実施の形態にかかる型枠Ｋ−１の正面図FIG. 6 is a front view of the mold K-1 according to the first embodiment;
【図７】第一の実施の形態にかかる型枠Ｋ−１の右側面
図FIG. 7 is a right side view of the mold K-1 according to the first embodiment.
【図８】第一の実施の形態にかかる型枠Ｋ−１の底面図FIG. 8 is a bottom view of the mold K-1 according to the first embodiment;
【図９】図６におけるＡ−Ａ線断面図9 is a sectional view taken along line AA in FIG. 6;
【図１０】図７におけるＢ−Ｂ線断面図FIG. 10 is a sectional view taken along line BB in FIG. 7;
【図１１】図６におけるＣ−Ｃ線断面図11 is a sectional view taken along line CC in FIG. 6;
【図１２】図１におけるＤ−Ｄ線断面図FIG. 12 is a sectional view taken along line DD in FIG. 1;
【図１３】第一の実施の形態にかかる型枠Ｋ−１の要部
拡大平面図FIG. 13 is an enlarged plan view of a main part of the mold K-1 according to the first embodiment;
【図１４】第二の実施の形態にかかる型枠Ｋ−２の一部
破断斜視図FIG. 14 is a partially broken perspective view of a mold K-2 according to the second embodiment.
【図１５】図１４におけるＥ−Ｅ線断面図15 is a sectional view taken along line EE in FIG. 14;
【図１６】第三の実施の形態にかかる型枠Ｋ−３の一部
破断斜視図FIG. 16 is a partially broken perspective view of a mold K-3 according to the third embodiment.
【図１７】図１６におけるＦ−Ｆ線断面図17 is a sectional view taken along line FF in FIG. 16;
Ｔ 供試体 Ｋ 型枠 Ｒ 補強手段 １０ 筒状体 １２ 溝 １３ 切取り筒壁部 １３ｂ リブ １５ 鍔 １５ｂ 補強リブ ２０ 底板 T Specimen K Form R R Reinforcement means 10 Cylindrical body 12 Groove 13 Cut-out cylinder wall 13b Rib 15 Flange 15b Reinforcement rib 20 Bottom plate
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) G01N 1/28 B28B 7/10 ＪＩＣＳＴファイル（ＪＯＩＳ)──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. 7 , DB name) G01N 1/28 B28B 7/10 JICST file (JOIS)
Claims (1)
ック製の筒状体であって、 この筒状体には、前記底板の設けられていない側の筒口
から底板の設けられている側の筒口に向けて、該筒状体
の外側面に設けられる少なくとも二条の溝により区分さ
れた切取り筒壁部が備えられていると共に、 この切取り筒壁部には、前記筒状体に打ち込まれたコン
クリートの硬化後、該切取り筒壁部を前記溝に沿って切
離しながら硬化されたコンクリート表面から剥取る際
に、該切離、剥取りにより該切取り筒壁部を破断させな
い補強手段が備えられており、 しかも、この補強手段が、前記筒状体の外側にあって、
前記溝に沿うように切取り筒壁部に設けられたリブとし
てあると共に、 前記筒状体の前記底板が設けられていない側の筒口部に
は、前記筒状体の外側に向けて突き出す鍔が設けてあ
り、 この鍔が、前記筒口を巡る方向に沿った補強リブを備え
ていることを特徴とするコンクリート強度試験用供試体
成形型枠。1. A plastic cylindrical body having a bottom plate for closing one of the cylindrical ports, wherein the cylindrical body includes a cylindrical port on which the bottom plate is not provided and a cylindrical port on which the bottom plate is provided. And a cut-out cylindrical wall section defined by at least two grooves provided on the outer surface of the cylindrical body, and the cut-out cylindrical wall section includes a concrete driven into the cylindrical body. After hardening, when peeling off the hardened concrete surface while separating the cut-off cylinder wall portion along the groove, reinforcing means is provided to prevent the cut-off cylindrical wall portion from being broken by the separation and peeling. And the reinforcing means is outside the tubular body,
Along with the rib provided on the cut-off cylindrical wall along the groove, a flange protruding toward the outside of the cylindrical body is provided at a cylindrical opening of the cylindrical body on which the bottom plate is not provided. A molding form for a concrete strength test, wherein the flange is provided with a reinforcing rib extending in a direction around the cylinder opening.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32786495A JP3198038B2 (en) | 1995-11-24 | 1995-11-24 | Specimen molding form for concrete strength test |
| TW084100363A01A TW297849B (en) | 1995-11-24 | 1996-07-16 | The forming frame for concrete test piece |
| KR1019960030038A KR0164674B1 (en) | 1995-11-24 | 1996-07-24 | Sample casting mold for testing intensity of concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32786495A JP3198038B2 (en) | 1995-11-24 | 1995-11-24 | Specimen molding form for concrete strength test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09145570A JPH09145570A (en) | 1997-06-06 |
| JP3198038B2 true JP3198038B2 (en) | 2001-08-13 |
Family
ID=18203832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32786495A Expired - Fee Related JP3198038B2 (en) | 1995-11-24 | 1995-11-24 | Specimen molding form for concrete strength test |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3198038B2 (en) |
| KR (1) | KR0164674B1 (en) |
| TW (1) | TW297849B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010010208A (en) * | 1999-07-16 | 2001-02-05 | 성기종 | Test-thing production die for hardness testing of concrete |
| JP5947096B2 (en) * | 2011-07-06 | 2016-07-06 | 三谷セキサン株式会社 | Test piece molding form, test piece molding form opening method |
| JP7202177B2 (en) * | 2018-12-25 | 2023-01-11 | 戸田建設株式会社 | Formwork for concrete strength test specimen |
| JP7202178B2 (en) * | 2018-12-25 | 2023-01-11 | 戸田建設株式会社 | Resin forms for concrete strength test specimens |
-
1995
- 1995-11-24 JP JP32786495A patent/JP3198038B2/en not_active Expired - Fee Related
-
1996
- 1996-07-16 TW TW084100363A01A patent/TW297849B/en not_active IP Right Cessation
- 1996-07-24 KR KR1019960030038A patent/KR0164674B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR970025877A (en) | 1997-06-24 |
| TW297849B (en) | 1997-02-11 |
| KR0164674B1 (en) | 1998-12-15 |
| JPH09145570A (en) | 1997-06-06 |
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