CN203414345U - Auxiliary device for testing early strength of sprayed concrete - Google Patents

Auxiliary device for testing early strength of sprayed concrete Download PDF

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Publication number
CN203414345U
CN203414345U CN201320537589.XU CN201320537589U CN203414345U CN 203414345 U CN203414345 U CN 203414345U CN 201320537589 U CN201320537589 U CN 201320537589U CN 203414345 U CN203414345 U CN 203414345U
Authority
CN
China
Prior art keywords
bearing plate
framework
early strength
sprayed concrete
plate
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
Application number
CN201320537589.XU
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Chinese (zh)
Inventor
雷骊彪
朱利春
姜德华
王少华
张明德
沈俊雁
李国民
吴波
陈秋生
刘�文
郑守坤
张军
张恒
王永红
郑以旭
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.)
China Gezhouba Group Co Ltd
Original Assignee
China Gezhouba Group Co Ltd
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 China Gezhouba Group Co Ltd filed Critical China Gezhouba Group Co Ltd
Priority to CN201320537589.XU priority Critical patent/CN203414345U/en
Application granted granted Critical
Publication of CN203414345U publication Critical patent/CN203414345U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides an auxiliary device for testing the early strength of sprayed concrete. The auxiliary device comprises a framework, an upper pressure bearing plate, a lower pressure bearing plate, a bottom plate, a side cushion block and a force transmission rod, wherein the upper pressure bearing plate and the lower pressure bearing plate are located at the upper end and the lower end of the framework respectively; the bottom plate is located on the lower part of the framework; the side cushion block is located on the bottom plate to be leveled with the lower pressure bearing plate; the force transmission rod penetrates through the top of the framework to be contacted with the upper pressure bearing plate. According to the device, the early strength of the sprayed concrete can be determined directly; the device is simple in structure and convenient to operate.

Description

A kind of sprayed concrete early strength testing auxiliary device
Technical field
The utility model relates to a kind of sprayed concrete early strength testing auxiliary device, utilizes this device can directly measure sprayed concrete early strength.
Background technology
In underground engineering support work, the development of the early strength of sprayed concrete is extremely important for early stage supporting at present.The assay method of sprayed concrete strength is divided into direct method and indirect method at present.Direct method adopts the large plate core drilling method of spray and on-the-spot core drilling method, but core drilling method only has concrete strength to reach 10MPa, could be suitable for above, is not suitable for early age strength of concrete and detects; Indirect method has a loading method and pull method, and the testing result that these methods draw need to, in conjunction with the linear relationship of they and concrete strength, could be inferred and concrete strength; And these linear relationships are all relevant with concrete raw material, test facility and test method, deterministic process is more loaded down with trivial details.Therefore in Construction practices, need a kind of method of direct mensuration sprayed concrete early strength.
Utility model content
The utility model provides a kind of sprayed concrete early strength testing auxiliary device, has solved the method for testing of the early strength of sprayed concrete, and its technical scheme is as described below:
A kind of sprayed concrete early strength testing auxiliary device, comprise framework, upper bearing plate, lower bearing plate, base plate, side cushion block and transmission rod, described upper bearing plate and lower bearing plate lay respectively at the top and bottom in framework, described base plate is positioned at framework bottom, described side cushion block is positioned on base plate and is mutually concordant with lower bearing plate, and described transmission rod contacts with upper bearing plate through framework top.
Described transmission rod and framework junction are provided with back-moving spring, the convenient test specimen of installing.
Between described side cushion block and lower bearing plate, be provided with gap.
The length in described gap is 75mm.
This device is comprised of framework, upper bearing plate, lower bearing plate, base plate, side cushion block and transmission rod.Transmission rod and framework junction arrange back-moving spring.Between side cushion block and lower bearing plate, leave gap (75mm), avoid lateral load to exert an influence to the test specimen plane of fracture, thereby affect test findings.The feature of this device is: simple in structure, easy to operate.
Accompanying drawing explanation
Fig. 1 is sprayed concrete early strength testing auxiliary device structural representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
In figure, 1, framework; 2, upper bearing plate; 3, lower bearing plate; 4, base plate; 5, side backing plate; 6, transmission rod; 7, concrete sample.
Embodiment
As depicted in figs. 1 and 2, described sprayed concrete early strength testing auxiliary device comprises framework 1, upper bearing plate 2, lower bearing plate 3, base plate 4, side cushion block 5 and transmission rod 6, described upper bearing plate 2 and lower bearing plate 3 lay respectively at the top and bottom in framework 1, described base plate 4 is positioned at framework 1 bottom, described side cushion block 5 is positioned on base plate 4 and is mutually concordant with lower bearing plate 3, described transmission rod 6 contacts with upper bearing plate 2 through framework 1 top, described transmission rod 6 is provided with back-moving spring with framework 1 junction, the convenient test specimen 7 of installing, between described side cushion block 5 and lower bearing plate 3, be provided with gap.
Using method is as described below: first this device is placed on test pressure machine, then maintenance is reached to the sprayed concrete test specimen 7(75 * 75 * 300mm in the length of time) put into this device, for guaranteeing that the shiny surface of test specimen 7 contacts with bearing plate 2, need install test specimen 7 from injection direction 90-degree rotation again.The general Forming Quality of test specimen 7 end is poor, and while therefore installing, test specimen end should be abdicated bearing plate 2 outside 20~30mm, in order to avoid affect test findings.During test, test pressure machine is exerted pressure by 6 pairs of upper bearing plates 2 of transmission rod.Owing to leaving gap (75mm) between side cushion block 5 and lower bearing plate 3, the impact of having avoided lateral load to produce the test specimen plane of fracture.Test rate of loading general control is in 1~2KN/ second, until test specimen destroys.Each test specimen can carry out 2 tests.The feature of this device is: simple in structure, easy to operate.

Claims (4)

1. a sprayed concrete early strength testing auxiliary device, it is characterized in that: comprise framework, upper bearing plate, lower bearing plate, base plate, side cushion block and transmission rod, described upper bearing plate and lower bearing plate lay respectively at the top and bottom in framework, described base plate is positioned at framework bottom, described side cushion block is positioned on base plate and is mutually concordant with lower bearing plate, and described transmission rod contacts with upper bearing plate through framework top.
2. sprayed concrete early strength testing auxiliary device according to claim 1, is characterized in that: described transmission rod and framework junction are provided with back-moving spring.
3. sprayed concrete early strength testing auxiliary device according to claim 1, is characterized in that: between described side cushion block and lower bearing plate, be provided with gap.
4. sprayed concrete early strength testing auxiliary device according to claim 3, is characterized in that: the length in described gap is 75mm.
CN201320537589.XU 2013-08-30 2013-08-30 Auxiliary device for testing early strength of sprayed concrete Expired - Fee Related CN203414345U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320537589.XU CN203414345U (en) 2013-08-30 2013-08-30 Auxiliary device for testing early strength of sprayed concrete

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320537589.XU CN203414345U (en) 2013-08-30 2013-08-30 Auxiliary device for testing early strength of sprayed concrete

Publications (1)

Publication Number Publication Date
CN203414345U true CN203414345U (en) 2014-01-29

Family

ID=49977227

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320537589.XU Expired - Fee Related CN203414345U (en) 2013-08-30 2013-08-30 Auxiliary device for testing early strength of sprayed concrete

Country Status (1)

Country Link
CN (1) CN203414345U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108593434A (en) * 2018-04-24 2018-09-28 伽师县铜辉矿业有限责任公司 A kind of gunite concrete initial strength detection device and application method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108593434A (en) * 2018-04-24 2018-09-28 伽师县铜辉矿业有限责任公司 A kind of gunite concrete initial strength detection device and application method
CN108593434B (en) * 2018-04-24 2020-10-09 伽师县铜辉矿业有限责任公司 Device for detecting initial strength of sprayed concrete and using method

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140129

Termination date: 20190830

CF01 Termination of patent right due to non-payment of annual fee