CN204142569U - Concrete splitting tensile strength test clamp - Google Patents

Concrete splitting tensile strength test clamp Download PDF

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Publication number
CN204142569U
CN204142569U CN201420538800.4U CN201420538800U CN204142569U CN 204142569 U CN204142569 U CN 204142569U CN 201420538800 U CN201420538800 U CN 201420538800U CN 204142569 U CN204142569 U CN 204142569U
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China
Prior art keywords
platen
backboard
apron
lever
tensile strength
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Active
Application number
CN201420538800.4U
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Chinese (zh)
Inventor
林青
邓华军
王艳璐
薛国虎
韩海真
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.)
Third Engineering Co Ltd of China Railway 17th Bureau Group Co Ltd
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Third Engineering Co Ltd of China Railway 17th Bureau Group Co Ltd
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Abstract

The utility model discloses a kind of concrete splitting tensile strength test clamp, belong to concrete material performance test apparatus technical field, it comprises top board, baffle group, lower platen and base, comprise side lever in addition, baffle group is made up of front apron and backboard, the upper breach for fit on pressing plate is provided with above baffle plate, the lower breach for assembling lower platen is provided with below baffle plate, each baffle plate is also provided with at least one group for assembling the circular hole of side lever, often comprise horizontally disposed two circular holes in group, side lever has rule, baffle plate is rotational symmetry, front apron and backboard chirality symmetry, front and rear baffle and lower platen are all fitting to connection with base, this fixture is used for concrete splitting test for tensile strength, central alignment when it can ensure concrete sample pressurized, and read length by the rule on side lever, thus need not specially routing and measure piece lengths, its structure is simple, with low cost, easy to operate, accurate positioning, very practical.

Description

Concrete splitting tensile strength test clamp
Technical field
The utility model relates to concrete material performance test apparatus technical field.
Background technology
Tensile strength is one of basic mechanical parameter of concrete road surface, is the important indicator judging structure crack, brittle rupture occurs.Owing to adopting direct tensile test more difficult, test figure discreteness is comparatively large, therefore mostly adopts the concrete tensile strength of splitting tensile test indirect determination.The method of this mensuration tensile strength is that (right cylinder test specimen is diametric(al)) applies focus pressure from upper and lower both direction on the center line of test specimen, makes to produce tension in test specimen.This power is the answer that theory of elasticity obtains in the stress analysis of elastic stage.Although the tensile strength that measures of split the law is lower than directly pressing the tensile strength values that axial tension tests, method is simple due to this, this method is not only applied in R&D institution, and obtains popularization in construction site.
Test method conventional at present needs first to draw position line to the upper and lower surface of testing sample before testing, to ensure that splitting surface is vertical with end face, publication number is that the Chinese patent of CN201859089U discloses a kind of concrete splitting tensile strength test clamp, and this fixture solves the horizontal positioned problem of testing sample by combination assembling form.But, still slightly complicated on this apparatus structure, and this device cannot measure sample length, also there is inconvenient place in using.
Utility model content
The technical problems to be solved in the utility model is for above-mentioned the deficiencies in the prior art, a kind of concrete splitting tensile strength test clamp is provided, it can not only simplify the troublesome operation of testing sample location, and solve the problem that clamp structure in prior art is complicated, can not measure sample length, use more practical and convenient.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of concrete splitting tensile strength test clamp, comprise top board successively from top to bottom, baffle group, lower platen and base, comprise side lever in addition, wherein, baffle group is made up of front apron and backboard, the top of each baffle plate is equipped with the upper breach for fit on pressing plate, the below of each baffle plate is equipped with the lower breach for assembling lower platen, each baffle plate is also provided with at least one group for assembling the circular hole of side lever, often comprise horizontally disposed two circular holes in group, side lever has rule, each baffle plate is rotational symmetry, front apron and backboard chirality symmetry, front apron, backboard and lower platen are all fitting to connection with base.
As preferably, each baffle plate all has two groups of circular holes, the pitch-row of two groups of circular holes is respectively 100 millimeters and 150 millimeters, pitch-row, for the concrete sample of different size, as required, also can be made other sizes by different pitch-rows, in addition, because concrete sample has certain size error, therefore pitch-row can be expanded 1 ~ 2 millimeter, the normal location of this fixture can't be affected like this.
As preferably, the lower end of front apron, backboard and lower platen is equipped with flange, and base is provided with for the groove with flange tabling.
As preferably, the stitching surface of top board and lower platen is plane, and this kind of upper and lower pressing plate is applicable to cylindrical concrete test specimen.
As preferably, the stitching surface of top board and lower platen is convex surface, and this kind of upper and lower pressing plate is applicable to cuboid concrete sample.
The beneficial effect adopting technique scheme to produce is: the utility model is used for the test of cement concrete tensile splitting strength, central alignment when its adopts side lever, baffle plate and pressing plate to ensure concrete sample pressurized, and read length by the rule on side lever, thus need not specially routing and measure piece lengths, the features such as it has that structure is simple, cost of manufacture is low, easy to operate, accurate positioning, it is used to carry out the test of cement concrete tensile splitting strength, install simple, orientation axis is accurate, test figure is secure, very practical.
Accompanying drawing explanation
Fig. 1 is the structural representation of this fixture in embodiment 1;
Fig. 2 is the structural representation of this fixture in embodiment 2.
In figure: 1, top board; 2, concrete sample; 3, front apron; 4, upper breach; 5, circular hole; 6, lower breach; 7, flange; 8, groove; 9, base; 10, lower platen; 11, backing plate; 12, side lever; 13, backboard.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1:
As shown in Figure 1, a kind of concrete splitting tensile strength test clamp, comprise top board 1 successively from top to bottom, baffle group, lower platen 10 and base 9, the stitching surface of top board 1 and lower platen 10 is plane, comprise side lever 12 in addition, wherein, baffle group is made up of front apron 3 and backboard 13, the top of each baffle plate is equipped with the upper breach 4 for fit on pressing plate 1, the below of each baffle plate is equipped with the lower breach 6 for assembling lower platen 10, each baffle plate is also provided with two groups for assembling the circular hole 5 of side lever 12, often comprise horizontally disposed two circular holes 5 in group, the pitch-row of two groups of circular holes 5 is respectively 100 millimeters and 150 millimeters, side lever 12 has rule, each baffle plate is rotational symmetry, front apron 3 is symmetrical with backboard 13 chirality, front apron 3, the lower end of backboard 13 and lower platen 10 is equipped with flange 7, base 9 is provided with for the groove 8 with flange 7 tabling.
This fixture is applicable to the cylindrical concrete test specimen that diameter is 100 millimeters or 150 millimeters, during use, tight is good, cylindrical concrete test specimen is placed in the middle part of this fixture by upper lower platen, front and rear baffle, and the region that side lever surrounds, test specimen will place backing plate 11(up and down can adopt wooden three-ply board), then this fixture is put into pressure testing machine, when pressure testing machine and fixture are close to pressing, take down side lever 12 and forward and backward baffle plate, then pressurization is until test specimen destroys and records test specimen load.
Embodiment 2:
As shown in Figure 2, a kind of concrete splitting tensile strength test clamp, comprise top board 1 successively from top to bottom, baffle group, lower platen 10 and base 9, the stitching surface of top board 1 and lower platen 10 is convex surface, comprise side lever 12 in addition, wherein, baffle group is made up of front apron 3 and backboard 13, the top of each baffle plate is equipped with the upper breach 4 for fit on pressing plate 1, the below of each baffle plate is equipped with the lower breach 6 for assembling lower platen 10, each baffle plate is also provided with two groups for assembling the circular hole 5 of side lever 12, often comprise horizontally disposed two circular holes 5 in group, the pitch-row of two groups of circular holes 5 is respectively 100 millimeters and 150 millimeters, side lever 12 has rule, each baffle plate is rotational symmetry, front apron 3 is symmetrical with backboard 13 chirality, front apron 3, the lower end of backboard 13 and lower platen 10 is equipped with flange 7, base 9 is provided with for the groove 8 with flange 7 tabling.
This fixture is applicable to the cuboid concrete sample that width is 100 millimeters or 150 millimeters, during use, tight is good, cuboid concrete sample is placed in the middle part of this fixture by upper lower platen, front and rear baffle, and the region that side lever surrounds, test specimen will place backing plate 11(up and down can adopt wooden three-ply board), then this fixture is put into pressure testing machine, when pressure testing machine and fixture are close to pressing, take down side lever 12 and forward and backward baffle plate, then pressurization is until test specimen destroys and records test specimen load.
The utility model is used for the test of cement concrete tensile splitting strength, central alignment when its adopts side lever, baffle plate and pressing plate to ensure concrete sample pressurized, and read length by the rule on side lever, thus need not routing and measure piece lengths specially, the features such as it has, and structure is simple, cost of manufacture is low, easy to operate, accurate positioning, use it to carry out the test of cement concrete tensile splitting strength, install simple, orientation axis is accurate, and test figure is secure, very practical.

Claims (5)

1. a concrete splitting tensile strength test clamp, it is characterized in that: comprise top board (1) from top to bottom successively, baffle group, lower platen (10) and base (9), comprise side lever (12) in addition, described baffle group is made up of front apron (3) and backboard (13), the top of front apron (3) and backboard (13) is equipped with the upper breach (4) for fit on pressing plate (1), the below of front apron (3) and backboard (13) is equipped with the lower breach (6) for assembling lower platen (10), front apron (3) and backboard (13) are equipped with at least one group for assembling the circular hole (5) of side lever (12), wherein often group comprises horizontally disposed two circular holes (5), described side lever (12) has rule, front apron (3) and backboard (13) are rotational symmetry, front apron (3) and backboard (13) chirality symmetry, front apron (3), backboard (13), lower platen (10) is all fitting to connection with described base (9).
2. concrete splitting tensile strength test clamp according to claim 1, it is characterized in that described front apron (3) and backboard (13) all have two groups of circular holes (5), the pitch-row of two groups of circular holes (5) is respectively 100 millimeters and 150 millimeters.
3. concrete splitting tensile strength test clamp according to claim 1, it is characterized in that the lower end of described front apron (3), backboard (13) and lower platen (10) is equipped with flange (7), described base (9) is provided with for the groove (8) with flange (7) tabling.
4. concrete splitting tensile strength test clamp according to claim 1, is characterized in that the stitching surface of described top board (1) and lower platen (10) is plane.
5. concrete splitting tensile strength test clamp according to claim 1, is characterized in that the stitching surface of described top board (1) and lower platen (10) is convex surface.
CN201420538800.4U 2014-09-18 2014-09-18 Concrete splitting tensile strength test clamp Active CN204142569U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420538800.4U CN204142569U (en) 2014-09-18 2014-09-18 Concrete splitting tensile strength test clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420538800.4U CN204142569U (en) 2014-09-18 2014-09-18 Concrete splitting tensile strength test clamp

Publications (1)

Publication Number Publication Date
CN204142569U true CN204142569U (en) 2015-02-04

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CN201420538800.4U Active CN204142569U (en) 2014-09-18 2014-09-18 Concrete splitting tensile strength test clamp

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105823685A (en) * 2016-03-23 2016-08-03 河南省水利科学研究院 Experimental method for determining concrete tensile strength through transverse splitting method
CN109682685A (en) * 2019-01-07 2019-04-26 上海建工集团股份有限公司 Measure the device and method of quasi-brittle material tensile strength

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105823685A (en) * 2016-03-23 2016-08-03 河南省水利科学研究院 Experimental method for determining concrete tensile strength through transverse splitting method
CN109682685A (en) * 2019-01-07 2019-04-26 上海建工集团股份有限公司 Measure the device and method of quasi-brittle material tensile strength

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