CN102042932B - Instrument for detecting mortar strength by pressure selecting method - Google Patents
Instrument for detecting mortar strength by pressure selecting method Download PDFInfo
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- CN102042932B CN102042932B CN2009102338755A CN200910233875A CN102042932B CN 102042932 B CN102042932 B CN 102042932B CN 2009102338755 A CN2009102338755 A CN 2009102338755A CN 200910233875 A CN200910233875 A CN 200910233875A CN 102042932 B CN102042932 B CN 102042932B
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Abstract
The invention relates to an instrument for detecting mortar strength by a pressure selecting method. The instrument for detecting the mortar strength by the pressure selecting method comprises left and right pressure-selecting round flat pressure heads, a counter force frame, a driving screw, a loading handle, a concentric centering self-levelling system and an intelligent data acquisition subsystem, wherein the left pressure-selecting round flat pressure head corresponds to the right pressure-selecting round flat pressure head; the right pressure-selecting round flat pressure head is arranged on the concentric centering self-levelling system; the concentric centering self-levelling system is linked with the loading handle through the driving screw; and the left pressure-selecting round flat pressure head is arranged on an engine base provided with the intelligent data acquisition subsystem and is connected with the output end of the intelligent data acquisition subsystem. Compared with an instrument using the traditional method, the instrument for detecting the mortar strength by the pressure selecting method improves the precision of a detection result, has small damage to the original structure, completely solves the problem of detecting the on-site compression strength of a large amount of masonry mortar due to the excellent technical effect, has a wide application range, small and exquisite volume and little influence caused by environmental factors, and is loaded manually, convenient to operate, and suitable for large-range popularization.
Description
Technical field
The present invention relates to a kind of pick-up unit, relate in particular to a kind of instrument for detecting mortar strength by pressure of selecting.
Background technology
Building industry is the great mainstay industry of China, concerning commonwealthn's national economy.And, along with global seismic belt has nearly ten years entered new activity periods, the situation is tense for structural seismic safety.Masonry project is China's the most various lots of version at present.Wherein, masonry mortar intensity is the important parameter that must survey in engineering detecting.This parameter index is also construction quality, safety, the life-span of estimating masonry project, and carries out the necessary important evidence of structural seismic safety assessment.Therefore, how more science, accurate, efficient, the safe evaluation of carrying out masonry project masonry mortar intensity are the important process of guaranteeing the people life property safety, and the testing of carrying out masonry project masonry mortar intensity is more particularly important.
At present " building mortar basic performance tests method standard " standard (JGJ/T70-2009) of China is carried out the compressive strength detection mainly for the mortar specimen in work progress, and the method that the cube mortar specimen of preparation 70.7mm * 70.07mm * 70.07mm carries out compressive strength test draws the compressive strength of mortar specimen.Through long-term practice, generally believe and there is higher accuracy.But this kind of test method can't extract test cube from the masonry project of having built by laying bricks or stones, therefore be not suitable for the Site Detection of compression strength of building mortar.
The demand detected for adapting to the on-the-spot compressive strength of masonry project masonry mortar, China promulgated " masonry project onthe technology of site test standard " (GB/T50315-2000), " Testing Compressive Strength of Masonry Mortar by Penetration Resistance technical regulation " (JGJ/T136-2001) etc., wherein recommended ten Through Several Survey Measures and instrument for the Site Detection choice of members, existing compression strength of building mortar Site Detection means analyzed:
(1) release method: the mortar strength for the common brick body of wall detects.Characteristics: 1 in situ detection, 2 equipment be light, 3 detect the position local damages.Classification: half direct method.The standard application restric-tion: the horizontal mortar joint full degree of mortar at bed joint lower than 65% the time, is difficult for selecting.
(2) cylinder platen press: for the detection of fired common brick body of wall mortar strength.Characteristics: 1 belongs to sampling detection, 2 only needs general concrete testing laboratory common equipment, 3 sampling point local damages.Classification: indirect method.The standard application restric-tion: measuring point quantity is unsuitable too many.
(3) mortar sheet shearing method: for the detection of fired common brick body of wall mortar strength.Characteristics: 1 genus samples detection, 2 dedicated mortar strength testing devices and marking apparatus is comparatively light, 3 sampling point local damages.Classification: half direct method.The standard application restric-tion: lack theoretical foundation, the formula application is complicated.
(4) rebound method: for fired common brick body of wall mortar intensity detection be suitable for mortar strength homogenieity generaI investigation.Characteristics: 1 genus original position Non-Destructive Testing ，Ce district selection is unrestricted, 2 reisilometers have approved product, and performance is more stable, and easy and simple to handle, 3 test section site surface only have local damage.Classification: indirect method.The standard application restric-tion: mortar strength should not be less than 2Mpa.
(5) some lotus method: for the detection of fired common brick body of wall mortar strength.Characteristics: 1 genus sampling detects, 2 experiment works are easier, 3 sampling point local damages.Classification: half direct method.The standard application restric-tion: mortar strength should not be less than 2Mpa.
(6) method of powder actuated shot: for fired common brick and porous brick masonry, the generaI investigation of mortar strength homogenieity.Characteristics: 1 belongs to original position Non-Destructive Testing ，Ce district selects unrestricted, 2 ail guns, and bullet etc. have approved product, and equipment is lighter, 3 test section site surface only have local damage.Classification: indirect method.The standard application restric-tion: 1 quantitatively infers mortar strength, should be used in conjunction with other detection methods, 2 mortar strengths should not be less than 2Mpa, 3 need the standard target calibration before detecting.
The related detecting instrument from above detection method, provide the indirectly testing physical quantity of compression strength of building mortar mostly, convert and obtain the compression strength value of masonry mortar by formula, and standard all has certain limitation to its range of application.With regard to current testing result precision, with regard to higher some lotus method, own characteristic is: 1 pressurized acting body is a sphere, and test specimen is subject to the effect of splitting tension force, the 2 formula usage factor correction type experimental formulas along the sphere normal direction, need to repeatedly revise.
Summary of the invention
For meeting the high standard requirement of building field now, need to solve the problem that existing compression strength of building mortar detecting instrument exists, to meet the requirement of Site Detection, instrument for masonry project compression strength of building mortar Site Detection is provided, detect applicable to the masonry mortar on-site sampling, more accurately directly record the compressive strength of masonry mortar.
The invention provides a kind of instrument for detecting mortar strength by pressure of selecting, comprise that corresponding the selecting in left and right press circle concora crush head, reaction frame, charging handle, drive screw, centering self-level(l)ing system and intelligent number are adopted subsystem with one heart, the right side is selected and is pressed circle concora crush head to be installed on concentric centering self-level(l)ing system, centering self-level(l)ing system is by drive screw interlock charging handle with one heart, drive screw is assemblied on reaction frame, the contact portion screw thread of drive screw and reaction frame is suitable, the loading effect of drive screw by charging handle tangential movement drive concentric centering self-level(l)ing system motion to the left.A left side is selected and is pressed circle concora crush head to be arranged on intelligent number to adopt on the subsystem support, connect intelligent number and adopt the subsystem output terminal, and intelligent number is adopted the subsystem support and is arranged at the reaction frame left side.Charging handle drives screw motion and makes concentric centering self-level(l)ing system motion, be arranged on the right side on concentric centering self-level(l)ing system and select and press circle concora crush head slightly to move according to the surface smoothness of mortar sheet, and make to select the pressure-acting surface of pressing circle concora crush head and the surface of mortar sheet sample parallels.
As to further improvement of the present invention:
Described concentric centering self-level(l)ing system is comprised of fixture, back-moving spring, cancave cambered surface piece, convex globoidal piece, the right side is selected and is pressed circle concora crush head to be installed on the center of convex globoidal piece, the size of cancave cambered surface piece and convex globoidal piece matches, cancave cambered surface piece and convex globoidal piece centres circle equipotential, cancave cambered surface piece and convex globoidal piece are symmetrical arranged back-moving spring and are arranged on the periphery of cancave cambered surface piece and convex globoidal piece by fixture.Centering self-level(l)ing system can be selected and press circle concora crush head to be regulated the right side according to the form that detects mortar sheet sample with one heart.
Leave gap between described cancave cambered surface piece and convex globoidal piece.The right side is selected and is pressed circle concora crush head touching mortar sheet sample, and through the adjustment of back-moving spring, back-moving spring has the tension and compression effect to produce, and right the selecting of this part gap assurance presses the position adjustment of circle concora crush head more accurate rationally.
Described cancave cambered surface piece and the optional square of convex globoidal piece or circle.These shapes can guarantee that the contraposition of back-moving spring is symmetrical arranged.
Described dust stratification pad is arranged on a left side and selects and press circle concora crush head to select the below of pressing round concora crush head corresponding with right, and is movably set on the reaction frame base.In the test mortar strength, have the broken end of mortar and produce, this device at utmost guarantees that the mortar residue fallen falls into the dust stratification pad, to keep cleaning in process of the test.
Selecting and pressing the front end of circle concora crush head is protruding column right cylinder.Its periphery is circular flat, and its effect is to produce axial circular cylinder compressive stress comparatively uniformly to mortar sheet sample, and can produce in the rectangle corner stress stack while not existing the face of exerting pressure of general rectangle to exert pressure.
Described selecting presses the protruding column circular flat front end of circle concora crush head that the anti-strange abnormal bed course of stress is set.The position contacted with mortar sheet sample on the protruding column circular flat of selecting pressure circle concora crush head is provided with polyethylene film, can reduce the strange deformity of the stressed local stress of test specimen caused due to the out-of-flatness of mortar sheet specimen surface and resemble.
Described both sides are selected and are pressed circle concora crush head to change in pairs.For coordinating pressurized mortar sheet sample pressurized zone thickness, select the different diameter of pressing circle concora crush head pressure-acting face of selecting.The border of generally selecting the protruding column circular flat of pressing circle concora crush head is left test specimen border all directions and should be greater than 1cm, can avoid like this boundary effect on detecting the impact of data.
Described charging handle is arranged to circle wheel type, at circle wheel edge, straight thread is set and sagging concave arc is set.This device is for the loading of mechanical type manual spiral, and the concave arc design of sinking is in order to coordinate the contact of finger, has improved comfort level, makes the distribution of power in the process of loading more even, also makes loading process more accurate.
Described left and right is corresponding selects and presses circle concora crush head, a left side to select to press circle concora crush head front end projection column cylinder length to be greater than the right side to select and press the cylindrical length of circle concora crush head front end projection column.
This instrument compares with traditional instrument the precision that has improved testing result, and the damage to original structure is less, with good technique effect, thoroughly solved the problem that in engineering reality, the on-the-spot compressive strength of various lots of masonry project masonry mortar detects, this instrument is applied widely, volume is small and exquisite, manual loading, be subject to such environmental effects minimum, easy to operate, be convenient to large-scale popularization.
The accompanying drawing explanation
Fig. 1 is the use constitutional diagram that the present invention selects instrument for detecting mortar strength by pressure
Fig. 2 is the structural representation that the present invention selects instrument for detecting mortar strength by pressure
Fig. 3 is that the present invention selects the instrument for detecting mortar strength by pressure diagrammatic cross-section
The present invention selects the instrument for detecting mortar strength by pressure member: pressure circle concora crush head is selected on 1-reaction frame, a 2-1-left side, the 2-2-right side is selected and pressed circle concora crush head, 3-fixture, 4-back-moving spring, 5-cancave cambered surface piece, 6-convex globoidal piece, 7-drive screw, 8-to prevent that the strange abnormal bed course of stress, 9-charging handle, the sagging concave arc of 9-1-, 10-dust stratification pad, 11-intelligence number are adopted subsystem, 12-intelligence number is adopted the subsystem output terminal.
Specific embodiment
Below in conjunction with Figure of description, the invention will be further described, according to Fig. 1, select instrument for detecting mortar strength by pressure shown in Fig. 2, comprise that pressure circle concora crush head 2-1 is selected on a corresponding left side, left and right and pressure circle concora crush head 2-2 is selected on the right side, reaction frame 1, drive screw 7, charging handle 9, centering self-level(l)ing system and intelligent number are adopted subsystem 11 with one heart, the right side is selected and is pressed circle concora crush head 2-2 to be installed on concentric centering self-level(l)ing system, centering self-level(l)ing system is by drive screw 7 interlock charging handles 9 with one heart, a left side is selected and is pressed circle concora crush head 2-1 to be arranged on intelligent number to adopt on the support of subsystem 11, connect intelligent number and adopt subsystem 11 output terminals, described intelligent number is adopted subsystem output terminal 12 also referred to as sensing system, for guarantee to select instrument for detecting mortar strength by pressure work carry out smoothly with test result accurately, at first proceed as follows: 1, intelligent number is adopted to the subsystem output end power to be connected, digital display is partly returned to zero, 2, terminal digital display control subsystem is adjusted to " peak value maintenance ".
According to the concentric centering self-level(l)ing system shown in Fig. 3, by fixture 3, back-moving spring 4, cancave cambered surface piece 5, convex globoidal piece 6, formed, the right side is selected and is pressed circle concora crush head 2-2 to be installed on the center of convex globoidal piece 6, cancave cambered surface piece 5 matches with the size of convex globoidal piece 6, cancave cambered surface piece 5 and convex globoidal piece 6 centres circle equipotentials, cancave cambered surface piece 5 is symmetrical arranged back-moving spring 4 with convex globoidal piece 6 and is arranged on the periphery of cancave cambered surface piece 5 and convex globoidal piece 6 by fixture 3.Centering self-level(l)ing system can be selected and press circle concora crush head 2-2 to be regulated the right side according to the form structure that detects mortar is different with one heart, to adjust to optimum position, adapts to requirement of experiment.
According to Fig. 1, Fig. 2, shown in Fig. 3, explain the implementation process of instrument provided by the present invention to mortar sheet intensity detection: the pressure of selecting that will apply of at first selecting according to the thickness of mortar sheet sample is justified concora crush head model, hand-held mortar sheet sample is placed on a left side and selects pressure circle concora crush head 2-1 and the right gap of pressing circle concora crush head 2-2 corresponding of selecting, after adjusting mortar sheet sample position, locate, turn charging handle 9 carries out loading to it, the loading effect of drive screw 7 by charging handle 9 tangential movement drive concentric centering self-level(l)ing system motion to the left, the right side is selected and is pressed circle concora crush head 2-2 horizontal direction translation left simultaneously, loading procedure is until pressure circle concora crush head 2-1 is selected on a left side and select while pressing circle concora crush head 2-2 to clamp mortar sheet sample on the right side, continue 9 pairs of mortar sheet samples of rotation charging handle and carry out loading, the right side is selected and is pressed circle concora crush head 2-2 touching mortar piece, adjustment according to the form of mortar sheet sample through back-moving spring 4, the right side is selected and press circle concora crush head 2-2 and left selecting to press circle concora crush head 2-1 to act on the more accurate balanced and reasonable of stressed position adjustment of mortar sheet sample, loading process until mortar sheet sample destroy after loading stop, the residue of destroyed mortar sheet sample falls into and is arranged on a left side and selects and press circle concora crush head 2-1 to press the dust stratification pad 10 of circle concora crush head 2-2 below corresponding with right selecting, peak value when record damages by pressure subsequently, be and damage load by pressure, and calculate and obtain the compression strength value of mortar sheet sample by formula, remove destroyed mortar sheet sample in dust stratification pad 10, then close " peak value maintenance ", by the zeroing again of the digital display of sensing system part, to carry out the test job of next sample.
This instrument is compared the precision that has improved testing result with classic method, and the damage to original structure is less, with good technique effect, thoroughly solved the test problems of the on-the-spot compressive strength of various lots of masonry project masonry mortar in engineering reality, this instrument is applied widely, volume is small and exquisite, manual loading, do not need water power, be subject to such environmental effects minimum, execute-in-place is convenient, is convenient to large-scale popularization.
Claims (9)
1. select instrument for detecting mortar strength by pressure, comprise that corresponding the selecting in left and right press circle concora crush head, reaction frame and drive screw, it is characterized in that: comprise charging handle, centering self-level(l)ing system and intelligent number are adopted subsystem with one heart;
Described concentric centering self-level(l)ing system is comprised of fixture, back-moving spring, cancave cambered surface piece, convex globoidal piece, the right side is selected and is pressed circle concora crush head to be installed on the center of convex globoidal piece, the size of cancave cambered surface piece and convex globoidal piece matches, the cancave cambered surface piece is corresponding with convex globoidal piece center, back-moving spring is arranged on the periphery of cancave cambered surface piece and convex globoidal piece by fixture, described cancave cambered surface piece and convex globoidal piece are the concentric circles setting;
The right side is selected and is pressed circle concora crush head to be installed on concentric centering self-level(l)ing system, and centering self-level(l)ing system is by drive screw interlock charging handle with one heart, and a left side is selected and pressed circle concora crush head to be arranged on intelligent number to adopt on the subsystem support, connect intelligent number and adopt the subsystem output terminal.
2. the instrument for detecting mortar strength by pressure of selecting according to claim 1, is characterized in that leaving gap between described cancave cambered surface piece and convex globoidal piece.
3. the instrument for detecting mortar strength by pressure of selecting according to claim 2, is characterized in that the optional symmetrical quadrilateral of described cancave cambered surface piece and convex globoidal piece or circle.
4. the instrument for detecting mortar strength by pressure of selecting according to claim 1, is characterized in that corresponding the selecting in described left and right press circle concora crush head, is provided with the dust stratification pad below its correspondence, and is arranged on the reaction frame base.
5. the instrument for detecting mortar strength by pressure of selecting according to claim 4, is characterized in that described dust stratification pad is box-like or shim-like.
6. the instrument for detecting mortar strength by pressure of selecting according to claim 1, is characterized in that it is protruding column right cylinder that the front end of circle concora crush head is pressed in corresponding the selecting in described left and right.
7. the instrument for detecting mortar strength by pressure of selecting according to claim 6, is characterized in that corresponding the selecting in described left and right press circle concora crush head to be changed in pairs.
8. the instrument for detecting mortar strength by pressure of selecting according to claim 1, is characterized in that described charging handle is arranged to circle wheel type, at circle wheel edge, straight thread is set and sagging concave arc is set.
9. the instrument for detecting mortar strength by pressure of selecting according to claim 6, it is characterized in that corresponding the selecting in described left and right press circle concora crush head, a left side is selected and is pressed circle concora crush head front end projection column cylinder length to be greater than the right side to select and press the cylindrical length of circle concora crush head front end projection column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102338755A CN102042932B (en) | 2009-10-23 | 2009-10-23 | Instrument for detecting mortar strength by pressure selecting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102338755A CN102042932B (en) | 2009-10-23 | 2009-10-23 | Instrument for detecting mortar strength by pressure selecting method |
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| Publication Number | Publication Date |
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| CN102042932A CN102042932A (en) | 2011-05-04 |
| CN102042932B true CN102042932B (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102338755A Expired - Fee Related CN102042932B (en) | 2009-10-23 | 2009-10-23 | Instrument for detecting mortar strength by pressure selecting method |
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| CN103926148B (en) * | 2014-04-25 | 2016-03-30 | 太原理工大学 | Masonry mortar static pressure penetrometer |
| CN104535435B (en) * | 2014-10-13 | 2017-10-31 | 南京航空航天大学 | A kind of fragile material tension-torsion test method |
| CN109060548B (en) * | 2018-09-25 | 2021-03-02 | 福建省永正工程质量检测有限公司 | Concrete test block compressive strength check out test set |
| CN110530719A (en) * | 2019-08-30 | 2019-12-03 | 湖北三江航天江河化工科技有限公司 | Propellant one directional tensile test device and method |
| CN111141610A (en) * | 2020-01-20 | 2020-05-12 | 廊坊市阳光建设工程质量检测有限公司 | Device for detecting compressive strength of concrete by using counter-pressure method and application method thereof |
| CN111623745B (en) * | 2020-06-04 | 2021-12-31 | 安徽瑞澳混凝土有限公司 | Mortar construction performance testing device and testing method |
| CN111982662B (en) * | 2020-09-30 | 2022-03-22 | 攀钢集团攀枝花钢铁研究院有限公司 | Device and test method for detecting shear strength of composite steel plate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050767A (en) * | 1990-11-20 | 1991-04-17 | 河南省建筑科学研究所 | On-the-spot test of compression strength of building mortar method and device |
| CN1084966A (en) * | 1992-09-30 | 1994-04-06 | 宁夏回族自治区建筑工程研究所 | Directly measure the method and apparatus of bonding mortar strength |
| CN201508297U (en) * | 2009-10-23 | 2010-06-16 | 江苏省建筑科学研究院有限公司 | Mortar strength detector using a selecting and pressing method |
-
2009
- 2009-10-23 CN CN2009102338755A patent/CN102042932B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050767A (en) * | 1990-11-20 | 1991-04-17 | 河南省建筑科学研究所 | On-the-spot test of compression strength of building mortar method and device |
| CN1084966A (en) * | 1992-09-30 | 1994-04-06 | 宁夏回族自治区建筑工程研究所 | Directly measure the method and apparatus of bonding mortar strength |
| CN201508297U (en) * | 2009-10-23 | 2010-06-16 | 江苏省建筑科学研究院有限公司 | Mortar strength detector using a selecting and pressing method |
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