JP2007171132A - Trowel for preparing concrete specimen, and preparation method for specimen using the same - Google Patents

Trowel for preparing concrete specimen, and preparation method for specimen using the same Download PDF

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JP2007171132A
JP2007171132A JP2005372905A JP2005372905A JP2007171132A JP 2007171132 A JP2007171132 A JP 2007171132A JP 2005372905 A JP2005372905 A JP 2005372905A JP 2005372905 A JP2005372905 A JP 2005372905A JP 2007171132 A JP2007171132 A JP 2007171132A
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concrete
iron
specimen
producing
trowel
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JP4671857B2 (en
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Masaaki Tanaka
雅章 田中
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Chugoku Electric Power Co Inc
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Chugoku Electric Power Co Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a trowel for preparing a concrete specimen capable of measuring a length of concrete placed in an inside of a mold, by simple constitution, and capable of surface-finishing an upper end face of the concrete, and a preparation method for the specimen using the same. <P>SOLUTION: This trowel 10 for preparing the specimen comprises a trowel part 12 with a substantially plane bottom face, a support rod 14 connected to a vertically upper part by the trowel part 12 and provided with a scale 18 indicating a distance from a trowel 12 bottom part, and an handle part 16 attached to an upper end part of the support rod 14. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

コンクリート供試体の作製において、型枠内部に打設されたコンクリートの長さを測定可能であるとともに、当該コンクリートの端面の表面仕上げを行うことができる工具及びそれを用いた供試体の作製方法に関する。   In the production of concrete specimens, it relates to a tool capable of measuring the length of concrete placed inside a mold and capable of finishing the end surface of the concrete, and a method of producing a specimen using the same. .

従来より、土木工事や建築工事等におけるコンクリートやモルタル等の打ち込み施工の表面仕上げには、木製や金属製等のコテが用いられる。このようなコテには、例えば、特許文献１に開示されるように、コンクリートやモルタル等の表面を仕上げるコテ部に水受けを設け、コンンクリートの表面仕上げる作業と、コンクリートの表面に浮き出てくる泡や水を除去する作業とを同時に行えるようにしたものがある。
特開２０００−２３０３１２号公報 Conventionally, a trowel made of wood, metal, or the like is used for surface finishing of a concrete or mortar driving work in civil engineering or construction work. For example, as disclosed in Patent Document 1, such a trowel is provided with a water receptacle in a trowel portion that finishes the surface of concrete, mortar, etc., and the surface of the concrete is surfaced, and the surface of the concrete is raised. There is one that can simultaneously perform the work of removing bubbles and water.
Japanese Patent Application Laid-Open No. 2000-2320312

ところで、コンクリート割裂引張試験の供試体を作製するに際しては、割裂引張試験専用の型枠が市販されていないため、割裂引張試験の供試体の長さよりも長い圧縮試験用の型枠をその代替として転用する。すなわち、割裂引張試験の供試体の長さは圧縮試験用の型枠よりも短いため、打設されたコンクリートの上端面の表面を仕上げる際には、型枠の内部にコテを挿入してコンクリートの上端面を水平に均す必要がある。   By the way, when preparing a specimen for concrete splitting tensile test, there is no commercially available formwork dedicated to splitting tensile test, so instead of a mold for compression test longer than the length of the splitting tensile test specimen Divert. That is, since the length of the specimen for the split tension test is shorter than the mold for compression test, when finishing the top surface of the placed concrete, insert a trowel into the mold to insert the concrete. It is necessary to level the upper end surface of the plate horizontally.

しかしながら、特許文献１で開示されたコテでは、このような型枠内部のコンクリートの上端面を、精度良く水平に均すことができないため、端面不均一による測定精度の不良を招くおそれがあった。また、供試体の長さはその作製者による目分量で決定されるため、供試体の寸法に個人差が生じ、場合によっては割裂引張試験の試験機の加圧板よりも供試体の長さが長くなることで測定不能となるおそれもあった。   However, in the iron disclosed in Patent Document 1, since the upper end surface of the concrete inside the mold cannot be leveled with high accuracy, there is a risk of inferior measurement accuracy due to uneven end surfaces. . In addition, since the length of the specimen is determined by the scale of the creator, there are individual differences in the dimensions of the specimen, and in some cases the specimen length is longer than the pressure plate of the split tension tester. There is also a possibility that measurement may become impossible due to the increase in length.

本発明は、上記の点を鑑みてなされたものであり、簡単な構成で、型枠内部に打設されたコンクリートの長さを測定可能であるとともに、当該コンクリートの上端面の表面仕上げが可能であるコンクリート供試体作製用コテ及びそれを用いた供試体の作製方法を提供することを目的とする。   The present invention has been made in view of the above points. With a simple configuration, the length of the concrete placed in the mold can be measured, and the top surface of the concrete can be finished. An object of the present invention is to provide a iron for producing a concrete specimen and a method for producing a specimen using the same.

上記の目的を達成するため、本発明は、コンクリート供試体の端面の表面仕上げに用いるコンクリート供試体作製用コテであって、
底面が略平面であるコテ部と、
前記コテ部により鉛直上方に接続され、コテ部底面からの距離を示す目盛りが設けられた支持棒部と、
前記支持棒部の上方端部に取り付けられたハンドル部とからなることを特徴とする（第１の発明）。
本発明によるコンクリート供試体作製用コテによれば、当該コテを型枠に打設されたコンクリートの上端面に当接し、型枠の上方縁部に対応する位置における支持棒部の目盛りの値を読み取り、型枠の全長から、読み取られた目盛りの値を差し引くことにより、打設されたコンクリートの長さを算定して、コンクリート供試体が所定の長さになるように調節することができる。 In order to achieve the above object, the present invention is a iron for making a concrete specimen used for surface finishing of an end face of a concrete specimen,
A iron part having a substantially flat bottom surface;
A support bar portion that is connected vertically above the iron portion and provided with a scale indicating a distance from the bottom surface of the iron portion;
And a handle portion attached to an upper end portion of the support rod portion (first invention).
According to the iron for producing a concrete specimen according to the present invention, the iron contacts the upper end surface of the concrete placed on the mold, and the scale value of the support bar at the position corresponding to the upper edge of the mold is determined. The length of the placed concrete can be calculated by subtracting the value of the read scale from the total length of the reading and formwork, and the concrete specimen can be adjusted to a predetermined length.

第２の発明は、第１の発明において、前記コテ部を振動可能な振動体を、前記コテ部、支持棒部、ハンドル部の少なくともいずれかに備えることを特徴とする。
本発明によるコンクリート供試体作製用コテによれば、打設されたコンクリートの上端面にコテ部の底面を当接し、振動体から発生させた振動をコテ部からコンクリートに伝播させることにより、コンクリートを締め固めて打設することができる。 According to a second invention, in the first invention, a vibrating body capable of vibrating the iron part is provided in at least one of the iron part, the support bar part, and the handle part.
According to the iron for producing a concrete specimen according to the present invention, the bottom surface of the iron part is brought into contact with the upper end surface of the placed concrete, and the vibration generated from the vibrating body is propagated from the iron part to the concrete. Can be compacted and placed.

第３の発明は、第１又は２のいずれかの発明において、前記コテ部の上面に水準器を備えることを特徴とする。
本発明によるコンクリート供試体作製用コテによれば、打設されたコンクリートの上端面にコテ部の底面を当接し、水準器に内包する気泡の位置を読み取り、気泡の位置からコンクリートの上端面が水平に成形されているか否かを判定してコンクリートの上端面を水平に成形することができる。 According to a third invention, in any one of the first and second inventions, a level is provided on an upper surface of the iron part.
According to the iron for producing a concrete specimen according to the present invention, the bottom surface of the iron part is brought into contact with the upper end surface of the placed concrete, the position of the bubbles contained in the level is read, and the upper end surface of the concrete is determined from the position of the bubbles. It can be determined whether or not it is horizontally molded, and the upper end surface of the concrete can be molded horizontally.

第４の発明は、第１〜３のいずれかの発明において、前記コテ部は、円盤形状を有することを特徴とする。
本発明によるコテ部によれば、打設されたコンクリートの上端面にコテ部の底面を当接した状態において、その円盤形状のコテ部の縁部を、円筒形型枠の内側側面に回転することなく任意の方向で接地することが可能であるため、コンクリート供試体の端面全域を容易に均すことができる。 According to a fourth invention, in any one of the first to third inventions, the iron part has a disk shape.
According to the iron part of the present invention, the edge of the disk-shaped iron part is rotated to the inner side surface of the cylindrical formwork in a state where the bottom surface of the iron part is in contact with the upper end surface of the placed concrete. Since it can be grounded in any direction without any problem, the entire end face of the concrete specimen can be easily leveled.

第５の発明は、コンクリート割裂引張強度試験用の供試体の作製方法において、コンクリート供試体の端面の表面仕上げに、底面が略平面であるコテ部と、前記コテ部により鉛直上方に接続され、コテ部底面からの距離を示す目盛りが設けられた支持棒部と、前記支持棒部の上方端部に取り付けられたハンドル部とからなるコンクリート供試体作製用コテを用いて、供試体型枠にコンクリートを打設し、打設された当該コンクリートの上端面に前記コテ部の底面を当接して当該コンクリートの上端面を平らに均し、打設された当該コンクリートの上端面に前記コテ部の底面を当接し、前記供試体型枠の上方縁部に対応する位置における前記支持棒部の目盛りの値を読み取り、前記供試体型枠の全長から、読み取られた前記目盛りの値を差し引くことにより、打設された前記コンクリートの長さを算定して、前記コンクリートが所定の長さになるように調節することを特徴とする。   The fifth invention is a method for producing a specimen for a concrete splitting tensile strength test, in which the surface finish of the end face of the concrete specimen is connected to the upper part vertically by the iron part having a substantially flat bottom surface, and the iron part, Using a trowel for preparing a concrete specimen comprising a support bar provided with a scale indicating the distance from the bottom of the iron part and a handle part attached to the upper end of the support bar, The concrete is placed, the bottom surface of the iron part is brought into contact with the upper end surface of the cast concrete, the upper end surface of the concrete is leveled, and the upper part of the concrete is placed on the upper end surface of the concrete. Read the scale value of the support bar at a position corresponding to the upper edge of the specimen mold frame, contacting the bottom surface, and subtract the read scale value from the total length of the specimen mold frame It allows to calculate the length of the concrete is pouring the concrete and adjusting to a predetermined length.

第６の発明は、第５の発明において、前記コテ部を振動可能な振動体を、前記コテ部、支持棒部、ハンドル部の少なくともいずれかに備えたコンクリート供試体作製用コテ用いて、前記供試体型枠に打設された前記コンクリートの上端面に前記コテ部の底面を当接し、前記振動体から発生させた振動を前記コテ部から前記コンクリートに伝播させ、前記コンクリートを締め固めて打設することを特徴とする。   According to a sixth aspect of the present invention, in the fifth aspect, the vibrating body capable of vibrating the iron portion is used as a concrete specimen making iron provided in at least one of the iron portion, the support bar portion, and the handle portion. The bottom surface of the iron part is brought into contact with the upper end surface of the concrete placed in a specimen formwork, the vibration generated from the vibrating body is propagated from the iron part to the concrete, and the concrete is compacted. It is characterized by providing.

第７の発明は、第５又は６のいずれかの発明において、前記コテ部の上面に水準器を備えたコンクリート供試体作製用コテ用いて、打設された前記コンクリートの上端面にコテ部の底面を当接し、前記水準器に内包する気泡の位置を読み取り、当該気泡の位置から前記コンクリートの上端面が水平に成形されているか否かを判定して前記コンクリートの上端面を水平に成形することを特徴とする。   The seventh invention is the invention according to any one of the fifth and sixth inventions, wherein the iron part is provided on the upper surface of the concrete placed by using a concrete specimen making iron provided with a level on the upper surface of the iron part. The bottom surface is abutted, the position of the bubble contained in the level is read, and it is determined whether or not the upper end surface of the concrete is formed horizontally from the position of the bubble, and the upper end surface of the concrete is formed horizontally. It is characterized by that.

本発明によれば、簡単な構成で、型枠内部に打設されたコンクリートの長さを測定可能であるとともに、当該コンクリートの上端面の表面仕上げが可能であるコンクリート供試体作製用コテ及びそれを用いた供試体の作製方法を提供できる。   According to the present invention, it is possible to measure the length of concrete placed inside a mold with a simple configuration, and to provide a concrete test piece manufacturing iron capable of finishing the top surface of the concrete. It is possible to provide a method for producing a specimen using

以下、本発明に係るコンクリート供試体作製用コテの好ましい一実施形態について図面を用いて詳細に説明する。図１は、本発明の一実施形態に係るコンクリート供試体作製用コテの正面図であり、図２は、図１の上面図である。また、図３は、本発明の一実施形態に係るコンクリート供試体作製用コテを構成するハンドル部の拡大断面図である。   Hereinafter, a preferred embodiment of a concrete specimen manufacturing iron according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of a concrete specimen manufacturing iron according to an embodiment of the present invention, and FIG. 2 is a top view of FIG. FIG. 3 is an enlarged cross-sectional view of a handle portion that constitutes a concrete specimen manufacturing iron according to an embodiment of the present invention.

図１に示すように、供試体作製用コテ１０は、コテ部１２と支持棒部１４とハンドル部１６とから構成される。   As shown in FIG. 1, the specimen preparation iron 10 includes a iron part 12, a support bar part 14, and a handle part 16.

コテ部１２は、肉厚で円盤形状の金属板であり、その底面に平滑な略平面を有する。また、図２に示すように、コテ部１２の上面には水準器２２が設けられる。   The iron part 12 is a thick and disc-shaped metal plate, and has a substantially flat surface on the bottom surface. As shown in FIG. 2, a level 22 is provided on the upper surface of the iron part 12.

支持棒部１４は、金属製の円柱棒であり、その下端が円盤形状を有するコテ部１２の中心から鉛直上方に接続される。また、その金属棒の外周面にはコテ部１２の底面からの距離を示す目盛り１８が設けられる。   The support bar portion 14 is a metal cylindrical rod, and the lower end thereof is connected vertically upward from the center of the iron portion 12 having a disk shape. A scale 18 indicating the distance from the bottom surface of the iron part 12 is provided on the outer peripheral surface of the metal bar.

ハンドル部１６は、その外形に手で握り易い程度の外径からなる円筒形状を有し、支持棒１４の上部に接続される。また、図３に示すように、その内部には振動体２４と電池２６とが設置される。振動体２４は、例えば、偏心モーターや圧電素子などの電気で可動する振動子であり、電池２６から電源を供給され、コテ部１２に上下振動を伝える。また、ハンドル部１６の上部には、振動体２４で発生する振動のオンオフの切り替えを行うための電源スイッチ２０が備えられる。   The handle portion 16 has a cylindrical shape with an outer diameter that is easily gripped by hand, and is connected to the upper portion of the support bar 14. Moreover, as shown in FIG. 3, the vibrating body 24 and the battery 26 are installed in the inside. The vibrating body 24 is, for example, an electrically movable vibrator such as an eccentric motor or a piezoelectric element, and is supplied with power from the battery 26 and transmits vertical vibration to the iron part 12. In addition, a power switch 20 for switching on and off the vibration generated in the vibrating body 24 is provided on the handle portion 16.

次に、本発明に係るコンクリート供試体作製用コテ１０を用いた、割裂引張強度試験のための供試体の具体的な作製方法について説明する。   Next, a specific method for producing a specimen for the split tensile strength test using the concrete specimen producing iron 10 according to the present invention will be described.

図４は、本発明の一実施形態に係るコンクリート供試体作製用コテを用いた供試体の作製方法を表す斜視図であり、図５は、図４の側面矢視図である。   FIG. 4 is a perspective view showing a method for producing a specimen using a concrete specimen producing iron according to one embodiment of the present invention, and FIG. 5 is a side view of FIG.

図４に示すように、円筒状の型枠２８にコンクリート３０を打設した後、打設されたコンクリート３０の上端部に供試体作製用コテ１０を当接するといった作業を繰り返しながら供試体を作製していく。   As shown in FIG. 4, after the concrete 30 is placed on the cylindrical formwork 28, the specimen is produced while repeating the work of bringing the specimen preparation iron 10 into contact with the upper end of the placed concrete 30. I will do it.

型枠２８には、圧縮強度試験用の供試体の作製用の型枠が転用され、その寸法が、例えば、直径１５ｃｍ、長さ３０ｃｍの円筒状のものを用いる。ただし、本実施形態で作成する割裂引張強度試験用の供試体の寸法は、直径１５ｃｍ、高さ２０ｃｍとする。   As the mold 28, a mold for producing a specimen for compressive strength test is diverted, and its dimensions are, for example, a cylindrical shape having a diameter of 15 cm and a length of 30 cm. However, the dimensions of the specimen for the split tensile strength test created in this embodiment are 15 cm in diameter and 20 cm in height.

コンクリート３０には、日本工業規格（ＪＩＳ Ａ １１３２）に規定される所定の選別処理を行ったものを用いる。   As the concrete 30, a concrete that has been subjected to a predetermined sorting process stipulated in Japanese Industrial Standard (JIS A 1132) is used.

ここで、供試体作製用コテ１０を用いて型枠２８にコンクリート３０を打設する際に、ハンドル部１６の電源スイッチ２０をオンに入れ、ハンドル部１６の内部に備えられた振動体２４を振動させることによりこの振動をコテ部１２に伝播させ、振動するコテ部１２の底面をコンクリート３０の上端部に押し当てることにより、打設されたコンクリート３０全体を締め固める。   Here, when the concrete 30 is placed in the mold 28 using the specimen preparation iron 10, the power switch 20 of the handle portion 16 is turned on, and the vibrating body 24 provided inside the handle portion 16 is turned on. By vibrating, this vibration is propagated to the iron part 12 and the bottom surface of the vibrating iron part 12 is pressed against the upper end of the concrete 30 to compact the entire placed concrete 30.

また、この時、図５に示すように、コテ部１２底面をコンクリート３０の上端面に当接し、型枠２８の上方縁部に対応する位置における支持棒部１４の目盛りＡを読み取り、型枠２８の全長である３０ｃｍから目盛りＡの値を差し引くことにより、打設されたコンクリート３０の長さを算定し、コンクリート３０が所定の長さ（例：２０ｃｍ）に達しているか否かを確認する。   At this time, as shown in FIG. 5, the bottom surface of the iron portion 12 is brought into contact with the upper end surface of the concrete 30, and the scale A of the support bar portion 14 at a position corresponding to the upper edge of the mold frame 28 is read. The length of the placed concrete 30 is calculated by subtracting the value of the scale A from 30 cm, which is the total length of 28, and it is confirmed whether or not the concrete 30 has reached a predetermined length (for example, 20 cm). .

そして、コンクリート３０が長さ２０ｃｍに達した時点で、コンクリート３０の打設を止め、供試体作製用コテ１０を、型枠２８に打設されたコンクリート３０の上端面に当接し、水準器２２に内包する気泡の位置を参照しながらコンクリート３０の上端面を水平に均す。   When the concrete 30 reaches a length of 20 cm, the concrete 30 is stopped from placing, and the specimen preparation iron 10 is brought into contact with the upper end surface of the concrete 30 placed in the mold 28, and the level 22 The upper end surface of the concrete 30 is leveled horizontally with reference to the position of the bubbles contained in the.

最後に、コンクリート３０を、日本工業規格（ＪＩＳ Ａ １１３２）に規定される所定の時間を経過させて固化させた後、型枠２８を取り外す。   Finally, the concrete 30 is solidified after a predetermined time specified in Japanese Industrial Standard (JIS A 1132), and then the mold 28 is removed.

以上、説明したように、本実施形態によれば、供試体作製用コテ１０を、型枠２８に打設されたコンクリート３０の上端面に接地し、型枠２８の上方縁部に対応する位置における支持棒部１４の目盛りＡを読み取り、型枠２８の全長から、読み取られた目盛りＡを差し引くことにより、打設されたコンクリート３０の長さを算定して、コンクリート供試体が所定の長さになるように調節することができる。   As described above, according to the present embodiment, the test piece manufacturing iron 10 is grounded to the upper end surface of the concrete 30 placed on the mold 28 and corresponds to the upper edge of the mold 28. The scale A of the support bar 14 is read, and the length of the placed concrete 30 is calculated by subtracting the read scale A from the total length of the mold 28, so that the concrete specimen has a predetermined length. Can be adjusted.

また、本実施形態によれば、打設されたコンクリート３０の上端面にコテ部１２の底面を当接し、ハンドル部１６の内部に備える振動体２４から発生させた振動をコテ部１２からコンクリート３０に伝達させることにより、コンクリート３０を締め固めることができる。   Further, according to the present embodiment, the bottom surface of the iron part 12 is brought into contact with the upper end surface of the placed concrete 30, and the vibration generated from the vibrating body 24 provided inside the handle part 16 is generated from the iron part 12 to the concrete 30. By transmitting to the concrete 30, the concrete 30 can be compacted.

また、本実施形態によれば、コテ部１２上面に水準器２２を備えることにより、供試体の端面の仕上げ段階において、打設されたコンクリート３０の上端面にコテ部１２の底面を当接し、水準器２２に内包する気泡の位置を読み取り、気泡の位置からコンクリート３０の上端面が水平に成形されているか否かを判定して、コンクリート３０の上端面を水平に成形することができる。   Further, according to the present embodiment, by providing the level 22 on the upper surface of the iron part 12, the bottom surface of the iron part 12 is brought into contact with the upper end surface of the placed concrete 30 in the finishing stage of the end face of the specimen, The position of the bubbles contained in the level 22 is read, and it is determined whether or not the upper end surface of the concrete 30 is formed horizontally from the position of the bubbles, and the upper end surface of the concrete 30 can be formed horizontally.

また、本実施形態によれば、コテ部１２は円盤形状を有しており、その円盤形状のコテ部１２の縁部を、円筒形の型枠２８の内側側面に回転することなく任意の方向で接地することが可能であるため、コンクリート供試体の端面全域を容易に均すことができる。   Further, according to the present embodiment, the iron part 12 has a disk shape, and the edge of the disk-shaped iron part 12 does not rotate to the inner side surface of the cylindrical formwork 28 in any direction. Since it can be grounded at the end, the entire end face of the concrete specimen can be easily leveled.

なお、本実施形態においては、コテ部１２と支持棒１４の素材は金属製であるとしているが、これに限らず、コンクリート３０を締め固める際に、コンクリート３０の上部から荷重及び振動を与えるのに適当な重量をもち、またこの荷重及び振動を支持できるものであれば、木製や強化プラスチックなどで構成されてもよく、また、これらの材質と金属との複合体で構成されてもよい。   In the present embodiment, the material of the iron part 12 and the support bar 14 is made of metal. However, the present invention is not limited to this, and when the concrete 30 is compacted, a load and vibration are applied from the upper part of the concrete 30. If it has an appropriate weight and can support this load and vibration, it may be made of wood or reinforced plastic, or may be made of a composite of these materials and metal.

また、本実施形態においては、供試体作製用コテ１０全体に振動を生じさせるために、振動体２４と電池２６とによって電気的に可動する偏心モーターや圧電素子などを用いる構成を用いたが、これに限らず、外部から供給される圧縮空気を動力とするエアーハンマーなどを用いる構成にしてもよい。   Further, in the present embodiment, in order to generate vibration in the entire specimen manufacturing iron 10, a configuration using an eccentric motor or a piezoelectric element that is electrically movable by the vibrating body 24 and the battery 26 is used. However, the configuration is not limited to this, and an air hammer that uses compressed air supplied from the outside as power may be used.

また、本実施形態においては、振動体２４と電池２６とからなるような自動的に振動を発生する構成を備えなくてもよい。その場合には、供試体作製用コテ１０のハンドル部１６を持ち、上から叩くようにコンクリート３０を締め固める。   Further, in the present embodiment, it is not necessary to have a configuration that automatically generates vibration such as the vibration body 24 and the battery 26. In that case, the handle portion 16 of the test piece manufacturing iron 10 is held, and the concrete 30 is compacted so as to strike from above.

本発明の一実施形態に係るコンクリート供試体作製用コテの正面図である。It is a front view of the iron for concrete specimen preparation concerning one embodiment of the present invention. 図１の上面図である。FIG. 2 is a top view of FIG. 1. 本発明の一実施形態に係るコンクリート供試体作製用コテのハンドル部の拡大縦断面図である。It is an expanded longitudinal cross-sectional view of the handle | steering-wheel part of the iron for concrete specimen preparation which concerns on one Embodiment of this invention. 本発明の一実施形態に係るコンクリート供試体作製用コテを用いた供試体の作製方法を表す斜視図である。It is a perspective view showing the preparation method of the specimen using the iron for concrete specimen preparation concerning one embodiment of the present invention. 図４の側面矢視図である。FIG. 5 is a side view of FIG. 4.

符号の説明Explanation of symbols

１０ 供試体作製用コテ
１２ コテ部
１４ 支持棒部
１６ ハンドル部
１８ 目盛り
２０ 電源スイッチ
２２ 水準器
２４ 振動体
２６ 電池
２８ 型枠
３０ コンクリート
Ａ 型枠上方縁部に対応する支持棒部の目盛り DESCRIPTION OF SYMBOLS 10 Specimen preparation iron 12 Iron part 14 Support bar part 16 Handle part 18 Scale 20 Power switch 22 Level 24 Vibrator 26 Battery 28 Mold 30 Concrete A Scale of the support bar corresponding to the upper edge of the mold

Claims (7)

コンクリート供試体の端面の表面仕上げに用いるコンクリート供試体作製用コテであって、
底面が略平面であるコテ部と、
前記コテ部により鉛直上方に接続され、コテ部底面からの距離を示す目盛りが設けられた支持棒部と、
前記支持棒部の上方端部に取り付けられたハンドル部とからなることを特徴とするコンクリート供試体作製用コテ。 A trowel for producing a concrete specimen used for surface finishing of an end face of a concrete specimen,
A iron part having a substantially flat bottom surface;
A support bar portion that is connected vertically above the iron portion and provided with a scale indicating a distance from the bottom surface of the iron portion;
A concrete test piece manufacturing iron comprising a handle portion attached to an upper end portion of the support bar portion. 前記コテ部を振動可能な振動体を、前記コテ部、支持棒部、ハンドル部の少なくともいずれかに備えることを特徴とする請求項１記載のコンクリート供試体作製用コテ。   The iron for producing a concrete specimen according to claim 1, wherein a vibrating body capable of vibrating the iron part is provided in at least one of the iron part, the support bar part, and the handle part. 前記コテ部の上面に水準器を備えることを特徴とする請求項１または２のいずれかに記載のコンクリート供試体作製用コテ。   The iron for producing a concrete specimen according to claim 1, wherein a level is provided on an upper surface of the iron part. 前記コテ部は、円盤形状を有することを特徴とする請求項１〜３のいずれかに記載のコンクリート供試体作製用コテ。   The iron for producing a concrete specimen according to any one of claims 1 to 3, wherein the iron part has a disk shape. コンクリート割裂引張強度試験用の供試体の作製方法において、
コンクリート供試体の端面の表面仕上げに、底面が略平面であるコテ部と、前記コテ部により鉛直上方に接続され、コテ部底面からの距離を示す目盛りが設けられた支持棒部と、前記支持棒部の上方端部に取り付けられたハンドル部とからなるコンクリート供試体作製用コテを用いて、
供試体型枠にコンクリートを打設し、
打設された前記コンクリートの上端面に前記コテ部の底面を当接して前記コンクリートの上端面を平らに均し、
打設された前記コンクリートの上端面に前記コテ部の底面を当接し、前記供試体型枠の上方縁部に対応する位置における前記支持棒部の目盛りの値を読み取り、前記供試体型枠の全長から、読み取られた前記目盛りの値を差し引くことにより、打設された前記コンクリートの長さを算定して、前記コンクリートが所定の長さになるように調節することを特徴とするコンクリート割裂引張強度試験用の供試体の作製方法。 In the method for producing a specimen for concrete splitting tensile strength test,
For the surface finish of the end face of the concrete specimen, a support part provided with a trowel part having a substantially flat bottom surface, a scale that indicates a distance from the bottom part of the trowel part that is connected vertically by the trowel part, and the support Using a concrete test piece manufacturing iron consisting of a handle part attached to the upper end of the bar part,
Put concrete in the specimen formwork,
The top surface of the concrete is flattened by abutting the bottom surface of the iron part against the top surface of the concrete placed,
The bottom surface of the iron part is brought into contact with the upper end surface of the placed concrete, and the scale value of the support bar at a position corresponding to the upper edge of the specimen mold is read. A concrete splitting tension characterized by calculating the length of the placed concrete by subtracting the read scale value from the total length and adjusting the concrete to have a predetermined length. A method for producing a specimen for a strength test. 前記コテ部を振動可能な振動体を、前記コテ部、支持棒部、ハンドル部の少なくともいずれかに備えたコンクリート供試体作製用コテ用いて、
前記供試体型枠に打設された前記コンクリートの上端面に前記コテ部の底面を当接し、前記振動体から発生させた振動を前記コテ部から前記コンクリートに伝播させ、前記コンクリートを締め固めて打設することを特徴とする請求項５記載のコンクリート割裂引張強度試験用の供試体の作製方法。 A vibrating body capable of vibrating the iron part, using a concrete specimen making iron provided in at least one of the iron part, the support bar part, and the handle part,
The bottom surface of the iron part is brought into contact with the upper end surface of the concrete placed on the specimen mold, the vibration generated from the vibrating body is propagated from the iron part to the concrete, and the concrete is compacted. The method for producing a specimen for a concrete split tensile strength test according to claim 5, wherein the specimen is cast. 前記コテ部の上面に水準器を備えたコンクリート供試体作製用コテ用いて、
打設された前記コンクリートの上端面にコテ部の底面を当接し、前記水準器に内包する気泡の位置を読み取り、前記気泡の位置から前記コンクリートの上端面が水平に成形されているか否かを判定して前記コンクリートの上端面を水平に成形することを特徴とする請求項５または６のいずれかに記載のコンクリート割裂引張強度試験用の供試体の作製方法。

Using a concrete specimen making iron with a level on the upper surface of the iron part,
The bottom surface of the iron part is brought into contact with the top surface of the concrete that has been placed, the position of the bubbles contained in the level is read, and whether or not the top surface of the concrete is formed horizontally from the position of the bubbles. The method for producing a specimen for concrete splitting tensile strength test according to any one of claims 5 and 6, characterized in that the upper end surface of the concrete is determined and formed horizontally.

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CN108007747A (en) * 2017-11-24 2018-05-08 河南中建西部建设有限公司 A kind of electronic compaction apparatus of pervious concrete specimen molding
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