JPH0325341A - Test piece for compressive strength test and its manufacturing method - Google Patents

Test piece for compressive strength test and its manufacturing method

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Publication number
JPH0325341A
JPH0325341A JP15972189A JP15972189A JPH0325341A JP H0325341 A JPH0325341 A JP H0325341A JP 15972189 A JP15972189 A JP 15972189A JP 15972189 A JP15972189 A JP 15972189A JP H0325341 A JPH0325341 A JP H0325341A
Authority
JP
Japan
Prior art keywords
test
test piece
diameter
mold
compressive strength
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.)
Pending
Application number
JP15972189A
Other languages
Japanese (ja)
Inventor
Noboru Sakaguchi
昇 坂口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimizu Construction Co Ltd
Shimizu Corp
Original Assignee
Shimizu Construction Co Ltd
Shimizu Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shimizu Construction Co Ltd, Shimizu Corp filed Critical Shimizu Construction Co Ltd
Priority to JP15972189A priority Critical patent/JPH0325341A/en
Publication of JPH0325341A publication Critical patent/JPH0325341A/en
Pending legal-status Critical Current

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  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明はコンクリート素材、樹脂素材等の圧縮強度を試
験するためのテストビース及びその製作方法に関する． く従来の技術） 従来、例えば土木、建築分野においては、コンクリート
の品質管理のためにコンクリートのテストビースを製作
し、その圧縮強度試験を行っており、そのテストビース
は直径の２倍の高さをもつ直円柱形のものが使用されて
いる． そして、試験精度上から、テストピースの上、下面はテ
ストビースの軸にできるだけ垂直な平面に仕上げる必要
があり、キャッピング又は研摩が必要どされている． （発明が解決しようとする課題） しかし、例えば高強度コンクリートの場合には、■キャ
ッピングの精度が試験結果に大きく影響する． ■キャッピング材に高強度の材料を使用する必要がある
， ■研摩は手間がかかる。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a test bead for testing the compressive strength of concrete materials, resin materials, etc., and a method for manufacturing the same. Conventionally, for example, in the civil engineering and construction fields, concrete test beads have been manufactured and compressive strength tests have been carried out to control the quality of concrete. A right cylindrical shape with . From the standpoint of test accuracy, the top and bottom surfaces of the test piece must be finished as flat as possible perpendicular to the axis of the test bead, and capping or polishing is required. (Problem to be solved by the invention) However, in the case of high-strength concrete, for example, the accuracy of capping greatly affects the test results. ■It is necessary to use a high-strength material for the capping material, ■Polishing is time-consuming.

■試＠機に直接接する上下面の摩擦係数のバラツキによ
り試験結果が影響を受ける。特に横方向の拘束力が影響
する． 等の理由から、従来の直円柱形のテストビースでは真の
コンクリート強度が得られないという課題を有している
． （ｎ題を解決するための手段とその作用〉本発明は前述
の課題の解決を目的とするものであって、本発明は（１
）中央部の円柱形の試験部の上、下部に、該試験部より
大径の円柱形の応力伝達部を一体に設けた形状を特徴と
する圧縮強度試験用のテストビース、及び（２〉中央部
に較べ上、下部を大径にすると共に、大径部の側面に硬
化性流動体の流入口を設けたテストビース製作用モール
ドの円筒部を軸方向に半割りにし５該半割りモールドの
片方に一体に上、下底板を付設し、該半割りモールドを
重ね締結してテストビース製作用モールドを形戒し、該
形成されたモールドに硬化性流動体を打ち込み、硬化ｆ
＆．該モールドを開離してテストピースを取り出すごと
くした圧縮強度試験用のテストビースの製作方法である
。■Test results are affected by variations in the friction coefficient of the upper and lower surfaces that are in direct contact with the test machine. In particular, the lateral restraining force has an effect. For these reasons, the problem is that true concrete strength cannot be obtained with conventional right cylindrical test beads. (Means for solving n problems and their effects) The present invention aims to solve the above-mentioned problems, and the present invention has (1)
) A test bead for compressive strength testing characterized by a shape in which cylindrical stress transmitting parts with a diameter larger than the test part are integrally provided above and below the central cylindrical test part, and (2) The cylindrical part of the test bead manufacturing mold, in which the upper and lower parts have larger diameters than the central part, and an inlet for a hardening fluid is provided on the side of the large diameter part, is divided in half in the axial direction. Upper and lower bottom plates are integrally attached to one side of the mold, the half molds are overlapped and fastened to form a test bead manufacturing mold, and a hardening fluid is poured into the formed mold to harden f.
&． This is a method of manufacturing a test bead for compressive strength testing, in which the mold is opened and a test piece is taken out.

本発明のテストピースの形状は、従来の直径の約２倍の
高さをもつ円柱形の部分を中央の試験部の有効部分とす
るものが好ましく、中央の試験部の上、下に該試験部よ
り大径の円柱形の応力伝達部を一体に設けた形状として
いる． すなわち，特に上、下部の応力伝達部の直径が中央部の
試験部の直径（Ｄ）の１．５乃至２倍の大きさを有し，
中央部の試験部が直径（Ｄ＞の２倍の有効高さを、上、
下部の応力伝達部が上記の直径（Ｄ）とほぼ等しい高さ
を有するものが好ましい．テストビースの素材としては
、コンクリート、樹脂等を挙げらることができるが、こ
れらに限定されるものではない． 本発明のテストビースによれば、断面積の大きい応力伝
達部が介在して試験部が直接試験機に接しないため、接
触面の精度や強度の影響が試験部に及ばない．従って、
試験部には軸方向の圧縮のみが加わり、テストビースの
正確な圧縮強度を測定できる． また本発明のテストピースを製作する方法においては、
テストビース製作用モールドを、その円筒部を袖方向に
半割りにし、該半割りモールドの片方に一体に上、下底
板を付設し、適当な留め金具で組立てる形状にすること
が好ましい．該方法により製作されたテストビースは上
、下面が垂直な平面に成形され、キャッピング、研摩と
いった表面仕上げが不要となる． （実施例） 以下に本発明を実施例の図面に基づき説明する。The shape of the test piece of the present invention is preferably such that the effective part of the central test part is a cylindrical part with a height approximately twice the diameter of a conventional test piece. The shape is such that a cylindrical stress transmitting part with a larger diameter than the part is integrated. That is, in particular, the diameters of the upper and lower stress transmission parts are 1.5 to 2 times the diameter (D) of the central test part,
The central test section has an effective height twice the diameter (D>),
It is preferable that the lower stress transmission part has a height approximately equal to the above diameter (D). Materials for the test beads include concrete, resin, etc., but are not limited to these. According to the test bead of the present invention, the stress transmission part with a large cross-sectional area is interposed and the test part does not come into direct contact with the testing machine, so the accuracy and strength of the contact surface do not affect the test part. Therefore,
Only axial compression is applied to the test section, making it possible to accurately measure the compressive strength of the test bead. Furthermore, in the method of manufacturing the test piece of the present invention,
It is preferable that the cylindrical part of the test bead manufacturing mold be split in half in the direction of the sleeve, and that the upper and lower bottom plates be integrally attached to one of the half molds, and then assembled using appropriate fasteners. The test beads produced by this method have vertical top and bottom surfaces, eliminating the need for surface finishing such as capping and polishing. (Example) The present invention will be described below based on drawings of examples.

第１図は本発明のテストビースの全体斜視図、第２図（
１）、（２）．（３）は本発明実施例のテストビースの
軸方向の断面図であって、試験部と応力伝達部の間のつ
ながり形状が（１）は円弧状、（２）は尖角状、（３）
は直線状と異なった場合を例示し、第３図は本発明実施
例のテストピース製作用モールドの全体斜視図である． 図中、１は本発明実施例のテストビース、２はテストビ
ース１の試験部、３は、上部の応力伝達部、４は下部の
応力伝達部、Ｄは試験部の直径、Ｃは上、下部の応力伝
達部の直径、Ｌは試験部の有効高さ、Ａは上、下部の応
力伝達部の高さ、７は本発明実施例のテストピース製作
用モールド、８はモールド７の中央部、９、１０、は上
、下部の大径部、ｌ１は半割りモールドの軸方向の半割
り線、１２、１３は硬化性流動体くコンクリートモルタ
ル）流入口、１４、１５は上、下底板である． 本発明実施例のテストビース１は、中央部の円柱形の試
験部２の上、下部に、該試験部２より大径の円柱形の応
力伝達部３、４を一体に設けた形状を有する．発明者の
経験によれば、上、下部の応力伝達部３、４の直径Ｃは
、中央部の試験部２の直径Ｄの１．５乃至２倍の大きさ
を有することが望ましい．また、試験部２は平行部の有
効部分の有効高さＬが直径Ｄの２倍の高さを、応力伝達
部３、４の高さＡが直径Ｄとほぼ等しい高さをそれぞれ
有することが望ましい． そしてまた、中央部の試験部２と上、下部の応力伝達部
３、４の間のつながり形状は第２図（１）の円弧Ｒ状で
あってもよ＜．（２）の丸みなしの尖角Ｅ状であっても
よく、（３〉の直線テーバＦ状であってもよい．ただし
、いずれの場合でも試験部２の高さしは平行部において
直径Ｄの２倍の高さを備えなければならない。Figure 1 is an overall perspective view of the test bead of the present invention, Figure 2 (
1), (2). (3) is an axial cross-sectional view of the test bead according to the embodiment of the present invention, in which the shape of the connection between the test part and the stress transmission part is circular arc shape in (1), pointed shape in (2), and pointed shape in (3). )
Figure 3 is an overall perspective view of a mold for manufacturing a test piece according to an embodiment of the present invention. In the figure, 1 is the test bead of the embodiment of the present invention, 2 is the test part of the test bead 1, 3 is the upper stress transmission part, 4 is the lower stress transmission part, D is the diameter of the test part, C is the upper part, The diameter of the lower stress transmitting part, L is the effective height of the test part, A is the height of the upper and lower stress transmitting parts, 7 is the mold for manufacturing the test piece of the embodiment of the present invention, 8 is the center part of the mold 7 , 9 and 10 are the upper and lower large diameter parts, l1 is the axial half line of the half mold, 12 and 13 are inlets for hardening fluid (concrete mortar), and 14 and 15 are the upper and lower bottom plates. It is. The test bead 1 according to the embodiment of the present invention has a shape in which cylindrical stress transmitting parts 3 and 4 having a larger diameter than the test part 2 are integrally provided above and below a cylindrical test part 2 in the center. ．． According to the inventor's experience, it is desirable that the diameter C of the upper and lower stress transmitting parts 3 and 4 be 1.5 to 2 times the diameter D of the central test part 2. In addition, the effective height L of the effective portion of the parallel portion of the test portion 2 is twice the diameter D, and the height A of the stress transmitting portions 3 and 4 is approximately equal to the diameter D. desirable. Furthermore, the connecting shape between the central test section 2 and the upper and lower stress transmitting sections 3 and 4 may be in the shape of an arc as shown in FIG. 2 (1). It may be a pointed E shape without rounding as shown in (2), or it may be a straight tapered F shape as shown in (3). However, in either case, the height of the test section 2 is the diameter D in the parallel part. It must be twice as high as the

上述のごとく、本発明のテストピース１は試験部２の上
、下に試験部２より断面積が大きい応力伝達部３、４を
一体的に設けた形状を有しているため、試験機（図示し
ない〉に当接されてＰなる力で圧縮されても、試＠機に
当接する上、下面５、６の平面精度、強度及び摩擦力に
より発生する横方向の複雑な拘束力の影響は応力伝達部
３、４で吸収され、試験部２まではその影響を及ぼさな
い，従って、試験部２は単純な圧縮応力を受けるのみと
なり、テストビースの正確な圧縮強度の測定が可能とな
る。As mentioned above, the test piece 1 of the present invention has a shape in which the stress transmitting parts 3 and 4, which have a larger cross-sectional area than the test part 2, are integrally provided above and below the test part 2. (not shown) and is compressed with a force of P, the influence of the complicated lateral restraining force generated by the flatness, strength, and frictional force of the upper and lower surfaces 5 and 6 that abut against the test machine is The stress is absorbed by the stress transmitting parts 3 and 4 and does not affect the test part 2. Therefore, the test part 2 receives only a simple compressive stress, making it possible to accurately measure the compressive strength of the test bead.

またテストピース１を製作するためのテストビース製作
用モールド７は、中央部８に較べ大径な上、下部の大径
部９、１０を有し、該大径部９、１０の側面に硬化性流
動体くコンクリートモルタル〉流入口１２、１３を設け
、中央部８及び大径部９、１０からなる円筒部を軸方向
に半割りにし（１１はモールド７の軸方向の半割り線を
示す．）、該半割りモールド７の片方に一体に上、下底
板ｌ４、１５を付設する．該半割りモールド７は丁番１
６によりＭ，Ｎ方向に開閉自在に組付けられる．半割り
モールド７は重ねて閉じられた後に、複数個のボルト１
７により締結され組立てられる。Further, the test bead manufacturing mold 7 for manufacturing the test piece 1 has upper and lower large diameter parts 9 and 10 that are larger in diameter than the central part 8, and the side surfaces of the large diameter parts 9 and 10 are hardened. Fluid concrete mortar> Inlets 12 and 13 are provided, and the cylindrical part consisting of the central part 8 and large diameter parts 9 and 10 is divided in half in the axial direction (11 indicates the axial half line of the mold 7). ), upper and lower bottom plates 14 and 15 are integrally attached to one side of the half-split mold 7. The half mold 7 is hinge 1
6, it can be assembled so that it can be opened and closed in the M and N directions. After the half-split mold 7 is overlapped and closed, a plurality of bolts 1 are inserted.
7 to be fastened and assembled.

半割りモールド７の上部合わせ面には、コンクリートモ
ルタル流入時に該モルタルから発する空気を抜くための
１１８が設けられている．次にモールドを組立て後、コ
ンクリートモルタル、樹脂等の硬化性流動体がその流入
口１２、１３から打ち込まれる。成形硬化されたテスト
ビース１は、ボルトｌ７を取外しモールド７を開離して
取出される．テストビース１の上、下面５、６は一体と
なった上、下底板１４、１５に当接して規制され、軸方
向に垂直な平面に或形されて従来のようなキャッピング
、研摩等の表面仕上げが不要となる． （発明の効果） 本発明のテストビースでは、断面積の大きい応力伝達部
が介在して試験部が直接試験機に接しないため、接触面
の精度や強度の影響が試験部には及ばず、コンクリート
、樹脂等の正確な圧縮強度を測定できる． また本発明のテストビースの製作用モールドは、その半
割りモールドの片方に一体となった上、下底板でテスト
ビースの上、下面を規制しながら成形するから、テスト
ビースの上、下面は軸方向に垂直な平面に或形され、キ
ャッピング、研摩といった表面仕上げが不要となる．The upper mating surface of the half-split mold 7 is provided with a hole 118 for removing air generated from the concrete mortar when it flows in. Next, after assembling the mold, a hardening fluid such as concrete mortar or resin is poured into the mold through its inlets 12 and 13. The molded and hardened test bead 1 is taken out by removing the bolt l7 and opening the mold 7. The upper and lower surfaces 5 and 6 of the test bead 1 are regulated by coming into contact with the integrated upper and lower bottom plates 14 and 15, and are shaped into a plane perpendicular to the axial direction to prevent conventional capping, polishing, etc. No finishing is required. (Effects of the Invention) In the test bead of the present invention, the stress transmission part with a large cross-sectional area is interposed and the test part does not come into direct contact with the testing machine, so the accuracy and strength of the contact surface do not affect the test part. Accurately measure compressive strength of concrete, resin, etc. In addition, since the mold for producing test beads of the present invention is molded while regulating the upper and lower surfaces of the test beads with the upper and lower bottom plates integrated into one half of the mold, the upper and lower surfaces of the test beads are axially It is shaped in a plane perpendicular to the direction, eliminating the need for surface finishing such as capping or polishing.

【図面の簡単な説明】[Brief explanation of drawings]

第ｌ図は本発明実施例のテストビースの全体斜視図、第
２図（１）、（２〉、（３）はテストビースの軸方向の
断面図で、試験部のつながり形状が（１）は円弧状、（
２）は尖角状、（３）は直線状と異なった場合を例示し
、第３図はテストビース製作用モールドの全体斜視図で
ある。 図中、 １・・・テストビース、　　　２・・・試験部、３・・
・上部の応用伝達部、４・・・下部の応力伝達部、Ｄ・
・・試験部の直径、゛　　Ｃ・・・応力伝達部の直径、
Ｌ・・・試験部の有効高さ、Ａ・・・応力伝達部の高さ
、７・・・テストピース製作用モールド、８・・・モー
ルド７の中央部、９．１０・・・大径部、１・・・半割
りモールドの半割り線 ２．１３・・・硬化性流動体の流入口、４．１５・・・
上、下底板 ６・・・丁番、　　　　　１７・・・ボルト、８・・・
空気抜き用の渭Figure 1 is an overall perspective view of a test bead according to an embodiment of the present invention, and Figures 2 (1), (2>, and 3) are axial cross-sectional views of the test bead, and the connected shape of the test part is (1). is arc-shaped, (
2) is an angular shape, and (3) is a straight shape. FIG. 3 is an overall perspective view of the mold for producing test beads. In the figure, 1... test bead, 2... test section, 3...
・Upper application transmission section, 4...Lower stress transmission section, D.
...Diameter of the test part, ゛ C...Diameter of the stress transmission part,
L... Effective height of test section, A... Height of stress transmission section, 7... Mold for test piece production, 8... Center part of mold 7, 9.10... Large diameter Part, 1...Half dividing line of half mold 2.13...Inflow port of curable fluid, 4.15...
Upper and lower bottom plates 6...Hinges, 17...Bolts, 8...
Air vent

Claims (5)

【特許請求の範囲】[Claims] （１）中央部の円柱形の試験部の上、下部に、該試験部
より大径の円柱形の応力伝達部を一体に設けた形状を特
徴とする圧縮強度試験用のテストピース。(1) A test piece for compressive strength testing characterized by a shape in which cylindrical stress transmitting parts having a larger diameter than the test part are integrally provided above and below the central cylindrical test part. （２）上、下部の応力伝達部の直径が中央部の試験部の
直径（Ｄ）の１．５乃至２倍の大きさを有し、中央部の
試験部が直径（Ｄ）の２倍の有効高さを、上、下部の応
力伝達部が上記の直径（Ｄ）とほぼ等しい高さを有する
ことを特徴とする請求項１記載の圧縮強度試験用のテス
トピース。(2) The diameter of the upper and lower stress transmission parts is 1.5 to 2 times the diameter (D) of the central test part, and the central test part is twice the diameter (D). 2. The test piece for compressive strength testing according to claim 1, wherein the upper and lower stress transmitting portions have a height approximately equal to the diameter (D). （３）テストピースの素材が、コンクリートであること
を特徴とする請求項１又は２記載の圧縮強度試験用のテ
ストピース。(3) The test piece for compressive strength testing according to claim 1 or 2, wherein the material of the test piece is concrete. （４）中央部に較べ上、下部を大径にすると共に、大径
部の側面に硬化性流動体の流入口を設けたテストピース
製作用モールドの円筒部を軸方向に半割りにし、該半割
りモールドの片方に一体に上、下底板を付設し、該半割
りモールドを重ね締結してテストピース製作用モールド
を形成し、該形成されたモールドに硬化性流動体を打ち
込み、硬化後、該モールドを開離してテストピースを取
り出すごとくした圧縮強度試験用のテストピースの製作
方法。(4) The cylindrical part of the test piece manufacturing mold, which has a larger diameter at the top and bottom than the center part and an inlet for the hardening fluid on the side of the large diameter part, is cut in half in the axial direction. Upper and lower bottom plates are integrally attached to one side of the halved mold, the halved molds are stacked and fastened to form a test piece manufacturing mold, and a curable fluid is poured into the formed mold, and after curing, A method of manufacturing a test piece for a compressive strength test, in which the mold is opened and the test piece is taken out. （５）硬化性流動体が水硬性コンクリートモルタルであ
ることを特徴とする請求項４記載の圧縮強度試験用のテ
ストピースの製作方法。(5) The method for manufacturing a test piece for compressive strength testing according to claim 4, wherein the hardening fluid is hydraulic concrete mortar.
JP15972189A 1989-06-23 1989-06-23 Test piece for compressive strength test and its manufacturing method Pending JPH0325341A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15972189A JPH0325341A (en) 1989-06-23 1989-06-23 Test piece for compressive strength test and its manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15972189A JPH0325341A (en) 1989-06-23 1989-06-23 Test piece for compressive strength test and its manufacturing method

Publications (1)

Publication Number Publication Date
JPH0325341A true JPH0325341A (en) 1991-02-04

Family

ID=15699829

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15972189A Pending JPH0325341A (en) 1989-06-23 1989-06-23 Test piece for compressive strength test and its manufacturing method

Country Status (1)

Country Link
JP (1) JPH0325341A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009300347A (en) * 2008-06-17 2009-12-24 Asahi Organic Chem Ind Co Ltd Method and test piece for evaluating mold characteristics
CN116148068A (en) * 2023-04-20 2023-05-23 玉田县致泰钢纤维制造有限公司 High-toughness steel fiber profile strength detection equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009300347A (en) * 2008-06-17 2009-12-24 Asahi Organic Chem Ind Co Ltd Method and test piece for evaluating mold characteristics
CN116148068A (en) * 2023-04-20 2023-05-23 玉田县致泰钢纤维制造有限公司 High-toughness steel fiber profile strength detection equipment

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