CN204924817U - Mortar shear strength's normal position detection device - Google Patents
Mortar shear strength's normal position detection device Download PDFInfo
- Publication number
- CN204924817U CN204924817U CN201520691106.0U CN201520691106U CN204924817U CN 204924817 U CN204924817 U CN 204924817U CN 201520691106 U CN201520691106 U CN 201520691106U CN 204924817 U CN204924817 U CN 204924817U
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- China
- Prior art keywords
- mortar
- lacing wire
- support
- detection device
- position detection
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Abstract
The utility model provides a mortar shear strength's normal position detection device, its characterized in that includes lacing wire, support, gasket and draw the appearance, the gasket is connected to the head end of lacing wire, after the tail end of this lacing wire passes the support that has the cavity, and draws the appearance and is connected. The support do, the through -hole that be used for pass lacing wire is equipped with at the center on its top. The utility model has the advantages that: be applicable to various strength grades, various types of mortar, like lime mortar, cement mortar etc, simple structure, convenient operation, little to the wall body surface of fracture during use, the easy restoration has very strong practicality.
Description
Technical field
The utility model relates to a kind of in situ detection device of mortar shearing strength, for implementing the original position presuming method of masonry mortar shearing strength, is applicable to the presumption of the shearing strength of the masonry mortar of various intensity.
Background technology
Masonry structure has long history in China and applies widely, and no matter in city or rural area, masonry structure is all one of primary structure form of tier building.Mortar strength is the key factor directly affecting masonry structure security.For existing masonry structure, existing multiple method can estimate its mortar strength at present.But most presuming method such as rebound method, some lotus method, barrel-shaped mast etc. are not all suitable for the mortar of strength grade lower than M2; The method that the scope of application is wider is all mainly by measuring the shearing strength of mortar, as original position list (two) cut method, mortar sheet cuts Fa Qie and release method.But these methods, owing to there is various difficulty in actual applications, are not widely used.
The test position of original position simple shear method requires to be selected in window hole place, needs to remove window for Existing reinforced concrete bridge, and failure mechanics is comparatively large, and testing cost is high; Original position double shear method and release method all need in body of wall, to draw out part fragment of brick for laying Bracket for Inspection or instrument, larger to the damage of original wall body; It is large stretch of that mortar sheet method of cutting requires in body of wall, take out some original state mortars, and difficulty is larger.
Summary of the invention
The problem that the utility model solves is to provide a kind of in situ detection device of mortar shearing strength, solves the complex structure that prior art exists, not easily applies the problem large with operation easier.
The technical solution of the utility model is: a kind of in situ detection device of mortar shearing strength, it is characterized in that, comprise lacing wire, support, pad and drawing instrument, the head end attachment spacers of lacing wire, the tail end of this lacing wire, through with after the support of cavity, is connected with drawing instrument.
The cavity bore of described stent cover to metope is greater than the end face of a fragment of brick, is provided with for the through hole through lacing wire at the center of cantilever tip.
Advantage of the present utility model is as follows:
1, various strength grade, various types of mortar is applicable to, as lime mortar, sand-cement slurry etc.;
2, structure is simple, easy to operate;
Little to wall damage face when 3, using, easily repair, there is very strong practicality.
Accompanying drawing explanation
Fig. 1 is the utility model side schematic view in use.
Fig. 2 is the right view of Fig. 1.
Embodiment
See Fig. 1 and Fig. 2, the in situ detection device of a kind of mortar shearing strength of the utility model, is characterized in that, comprise lacing wire 3, support 2, pad 4 and drawing instrument 5, the head end of lacing wire 3 installs pad 4, and the tail end of this lacing wire 3, through with after the support 2 of cavity, is connected with drawing instrument 5.
The center on described its top of support 5 is provided with for the through hole through lacing wire 3.Cavity on front side of it is in use in the face of body of wall 1, and the bore of cavity should be greater than the end face of the fragment of brick for pull-out.Support 5 effect supports body of wall, makes fragment of brick can pull out body of wall 1.
Using method of the present utility model is:
One block of header is selected at the measuring point place of body of wall 1, a through hole is made a call in header center, by lacing wire 3 head end through through hole, and be welded with or tighten pad 4 in body of wall 1 side, the lacing wire 3 of the opposite side of cavity 1 penetrates support 2, adopt the ground tackle of drawing instrument 5 that lacing wire anchoring is good outside support 2, in whole operating process, keep the center stressed of lacing wire 3.
Carry out pressurized operation to drawing instrument 5, lacing wire drives header to extract from body of wall from mortar joint place under the pressure effect of drawing instrument 5, and record header starts pressure N when extracting
j.
The shearing strength value at this place
n in formula
jfor the pulling capacity that drawing instrument is measured, A
jfor the area of seam 6 sheared by mortar, namely in Fig. 1, mark the area in 6 indication regions,
for correction factor
wherein correction factor
should contrast through test of many times and other method and draw.
The shearing strength value of some measuring points is averaged, namely obtains the shearing strength presumed value of this sheet body of wall mortar.
Claims (2)
1. an in situ detection device for mortar shearing strength, is characterized in that, comprises lacing wire, support, pad and drawing instrument, the head end attachment spacers of lacing wire, and the tail end of this lacing wire, through with after the support of cavity, is connected with drawing instrument.
2. the in situ detection device of mortar shearing strength according to claim 1, is characterized in that, the cavity bore of described stent cover to metope is greater than the end face of a fragment of brick, is provided with for the through hole through lacing wire at the center of cantilever tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520691106.0U CN204924817U (en) | 2015-09-08 | 2015-09-08 | Mortar shear strength's normal position detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520691106.0U CN204924817U (en) | 2015-09-08 | 2015-09-08 | Mortar shear strength's normal position detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204924817U true CN204924817U (en) | 2015-12-30 |
Family
ID=54973933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520691106.0U Expired - Fee Related CN204924817U (en) | 2015-09-08 | 2015-09-08 | Mortar shear strength's normal position detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204924817U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424507A (en) * | 2016-01-26 | 2016-03-23 | 中国海洋大学 | Situ detection method for shearing resistance of masonry mortar of masonry structure |
| CN105784465A (en) * | 2016-03-30 | 2016-07-20 | 广西众诚工程质量检测有限公司 | Square supporting device for pull-out test |
| CN110823717A (en) * | 2019-11-01 | 2020-02-21 | 广州大学 | Semi-flexible pavement shear strength testing device and testing method |
| CN116593323A (en) * | 2023-07-19 | 2023-08-15 | 常州市建筑材料研究所有限公司 | Special detection device of building block brickwork shear strength |
-
2015
- 2015-09-08 CN CN201520691106.0U patent/CN204924817U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105424507A (en) * | 2016-01-26 | 2016-03-23 | 中国海洋大学 | Situ detection method for shearing resistance of masonry mortar of masonry structure |
| CN105424507B (en) * | 2016-01-26 | 2019-05-17 | 中国海洋大学 | The in-situ detection method of masonry structure masonry mortar shearing strength |
| CN105784465A (en) * | 2016-03-30 | 2016-07-20 | 广西众诚工程质量检测有限公司 | Square supporting device for pull-out test |
| CN110823717A (en) * | 2019-11-01 | 2020-02-21 | 广州大学 | Semi-flexible pavement shear strength testing device and testing method |
| CN116593323A (en) * | 2023-07-19 | 2023-08-15 | 常州市建筑材料研究所有限公司 | Special detection device of building block brickwork shear strength |
| CN116593323B (en) * | 2023-07-19 | 2023-11-14 | 常州市建筑材料研究所有限公司 | Special detection device of building block brickwork shear strength |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20170908 |