CN101275903A - Road surface interlayer cementing shearing strength test method - Google Patents
Road surface interlayer cementing shearing strength test method Download PDFInfo
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- CN101275903A CN101275903A CNA200810025565XA CN200810025565A CN101275903A CN 101275903 A CN101275903 A CN 101275903A CN A200810025565X A CNA200810025565X A CN A200810025565XA CN 200810025565 A CN200810025565 A CN 200810025565A CN 101275903 A CN101275903 A CN 101275903A
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Abstract
An adhesive shearing strength between surface layers test method is a method for effective evaluation of the shearing strength of adhesive materials between surface layers, especially an easier solution whose test mode is also easier of the current problem that the shearing strength of adhesive materials between surface layers is inaccurately tested because of a unreasonable loading method. This method has the following steps: 1. indoor test: step one, preparing a sample and fixing the sample; step two: starting a motor and do a twisting and shearing test; step three, collecting and analyzing data. 2. Field test: step one: drilling a core of the surface layer, but not taking it out, and then drying the upper surface of it with hot wind; step two, bonding a shearing test fixture head and a core sample together; step three, implementing a twisting and shearing test after 30 minutes; step four, collecting and analyzing the data.
Description
Technical field
The present invention is a kind of method that is used for effective evaluation road surface interlayer cementing material shearing strength, and the present road surface interlayer cementing material shearing strength of especially a kind of easily solution is tested inaccurate method, belongs to the technical field of highway pavement performance test.
Background technology
In China's expressway construction, what generally adopt is bituminous pavement.In order to make asphalt pavement of highway multiple layer combination system have good structural bearing capacity and permanance, and improve anti-water damage damage capability, also more and more cause people's extensive attention for the interlayer management technology.The layering making is generally taked on the multilayer road surface, between layer and layer often because construction pollution, material properties difference etc. are former thereby make the interlayer faying face become weak link.Under the effect of traffic load (making horizontal loading especially), produce bigger shear stress at interlayer, when this power surpasses the shearing strength of interlaminar bonding material, surface layer is subjected to displacement on faying face, can cause when serious that the road surface occurs gathering around bag, passes, comes off, peeling etc. is because of the failure mode that the interlaminar bonding undercapacity causes, and had a strong impact on the usability and the permanance on road surface.As seen, in the indoor shearing strength that can accurately test the road surface interlayer cementing material, help being bituminous pavement or the suitable binding material of deck paving selection; In the cohesive strength that the road surface can be tested in outdoor scene, help controlling road surface tack coat quality control on construction.
At present, the test bituminous pavement commonly used or the instrument of bridge floor interlaminar bonding material shearing force belong to staight scissors class test instrument, earlier bitumen mixture specimen is fixed on the anchor clamps at the trial, as accompanying drawing 1, on another loading specimen, apply one and the parallel plane power of tack coat then, between two test specimens, occur sliding relatively, thereby can record the shearing strength of tack coat.Find that in process of the test this quasi-instrument is used for the obvious deficiency of shearing force existence of binding material between the indoor and outdoor test layer: at first, the load mode of this quasi-instrument produces bigger moment of flexure at the tack coat position, generation is perpendicular to the tension of interface layer, make interlaminar failure not cause owing to shearing force entirely, some tension is torn and is caused, and brings than mistake to test result; Secondly, when carrying out on-the-spot test, for the side direction that is implemented in test specimen applies shear stress, must road pavement destroy largely, so that there be enough seeing to put down shearing equipment, so the infringement of test process road pavement is bigger.
Summary of the invention
Technical matters: the purpose of this invention is to provide a kind of road surface interlayer cementing material shearing strength test method, this method more easily solves and causes the bigger problem of test error owing to load mode is unreasonable, and test method is simpler.
Technical scheme: road surface interlayer cementing material shearing strength test method of the present invention divides two kinds of indoor test and site tests, and its concrete steps are as follows:
Shop experiment: (accompanying drawing 2)
According to " highway engineering pitch and asphalt testing regulations " (JTJ052-2000) correlation test method moulding marshal piece, two-sided hitting real each 75 times, the test specimen number is no less than 6, be divided into 1 group in twos, two ends wiped clean with every group of test specimen, keep dry, behind the external coating water-proof tack coat, two test specimens are bonded together to make test specimen standby; If the shear resistance of test deck paving water-proof tack coat changes a test specimen in every group into make with decking end face same material test specimen (as coagulating cement soil block, steel plate etc.) and gets final product, specifically test procedure is as follows:
The first step: fixing test specimen one end is fixed on the anchor clamps, adjusts and load an axle lower end height it is contacted with loading specimen, and fix, the speed that torsion shear test is set is 0.05 commentaries on classics/min,
Second step: starter motor, the roller directional clutch can folk prescription to freely rotating, driving whole cutting mechanism rotates, the space of while clutch coupling inside, in the time of can ensureing electric motor starting, torsional shear mechanism does not start immediately synchronously, and begins rotation after a while again, vibration in the time of can avoiding electric motor starting like this is to the influence of shear resistance
The 3rd step: the data acquisition of torsion torque sensor directly by external computer control, is gathered stress and strain simultaneously, and is drawn its curve, every group of at least 3 parallel test specimens;
Site test (accompanying drawing 3)
The first step: adopting brill core machine that asphalt concrete layer is got into needs the test position, promotes corning machine, but core is not taken out, and adopts hair dryer the surperficial hot blast drying of using of core,
Second step: use seccotine handle shear test clamp head and the core identical with core diameter to bond together, at least 30 minutes begin later on to test,
The 3rd step: adjust a loading axle lower end height it is contacted with loading specimen, and fixing, the speed that torsion shear test is set is that 0.05 commentaries on classics/min carries out torsion shear test, test figure is gathered automatically by instrument, gathers data every 0.1s,
The 4th step: according to the moment of torsion of gathering can computation layer between the cohesive strength of binding material.
The present invention has creatively changed load mode in the process of the test, apply the power that moment of torsion replaces being parallel to tack coat at the loading specimen end face, thereby having avoided producing in the bonding aspect tension of vertical this face, all is owing to the shearing strength of shear stress greater than bonding layer material causes thereby make the destruction of interlayer.
Beneficial effect: this kind road surface interlayer cementing material method for testing shear strength, test figure accurately and reliably, easy to carry, can be in indoor or on-the-spot bituminous pavement or the bridge floor interlaminar bonding intensity of testing, can bituminous pavement newly-built with maintenance in be used to test the interlaminar bonding intensity of different contact interfaces and the cohesive strength of other two kinds of different materials contact interfaces.Select suitable binding material or tack coat quality control on construction for bituminous pavement or deck paving effective method is provided.
The inventor has been applied to this kind test method in Nanjing, the Jiangsu Province-highway Laoshan, Huaian tunnel recombination formula road surface interlayer cementing intensity evaluation, this bituminous pavement damage by water evil is less at present, operating position is good, illustrates that test method of the present invention is rational, reliable, practical.
Description of drawings
Fig. 1 is indoor interlaminar bonding material staight scissors load mode synoptic diagram.Wherein have: loading specimen 1, bonding material layer 2, fixedly test specimen 3, parallel boot direction 4.
Fig. 2 is indoor interlaminar bonding material torsion shear test load mode synoptic diagram.Wherein have: loading specimen 1, bonding material layer 2, fixedly test specimen 3, reverse and load anchor clamps 5, reverse loading direction 6, anchor clamps and core bonding part 7.
Fig. 3 is on-the-spot road surface interlayer cementing material torsion shear test load mode synoptic diagram.Wherein have: reverse and load anchor clamps 5, reverse loading direction 6, anchor clamps and core bonding part 7, on-the-spot core test specimen 8, the tack coat 9 of blacktop lower surface, blacktop 10.
Embodiment
Adopt the test of binding material between test layer of the present invention, specifically be divided into two kinds of situations of indoor and outdoors.
One. shop experiment (as accompanying drawing 2)
According to " highway engineering pitch and asphalt testing regulations " (JTJ052-2000) correlation test method moulding marshal piece, two-sided hitting real each 75 times, the test specimen number is no less than 6, is divided into 1 group in twos.Two ends wiped clean with every group of test specimen keeps dry, and is behind the external coating water-proof tack coat, that two test specimens are sticking
It is standby that knot is made test specimen together.If the shear resistance of test deck paving water-proof tack coat changes a test specimen in every group into make with decking end face same material test specimen (as coagulating cement soil block, steel plate etc.) and gets final product.Concrete test procedure is as follows:
(1) fixing test specimen one end is fixed on the anchor clamps, adjusts and load an axle lower end height it is contacted with loading specimen, and fix, the speed that torsion shear test is set is 0.05 commentaries on classics/min.
(2) starter motor, roller directional clutch can folk prescription to freely rotating, drive whole cutting mechanism and rotate.The space of while clutch coupling inside, in the time of can ensureing electric motor starting, torsional shear mechanism does not start immediately synchronously, and begins rotation after a while again, and the vibration in the time of can avoiding electric motor starting like this is to the influence of shear resistance.
(3) data acquisition of torsion torque sensor directly by external computer control, is gathered stress and strain simultaneously, and is drawn its curve.Every group of at least 3 parallel test specimens.
Two. site test (as accompanying drawing 3)
(1) adopting brill core machine that asphalt concrete layer is got into needs the test position, promotes corning machine, but core is not taken out, and adopts hair dryer core surface hot blast drying.
(2) use seccotine handle shear test clamp head and the core identical with core diameter to bond together, at least 30 minutes begin later on to test.
(3) adjust a loading axle lower end height it is contacted with loading specimen, and fixing, the speed that torsion shear test is set is that 0.05 commentaries on classics/min carries out torsion shear test, test figure is gathered automatically by instrument, gathers data every 0.1s.
(4) according to the moment of torsion of gathering can computation layer between the cohesive strength of binding material.
Claims (1)
1. road surface interlayer cementing shearing strength test method is characterized in that this method of testing divides two kinds of indoor test and site tests, and its concrete steps are as follows:
Shop experiment: the moulding marshal piece, two-sided hitting real each 75 times, the test specimen number is no less than 6, be divided into 1 group in twos, the two ends wiped clean with every group of test specimen keeps dry, behind the external coating water-proof tack coat, two test specimens are bonded together to make test specimen standby; If the shear resistance of test deck paving water-proof tack coat changes a test specimen in every group into make with decking end face same material test specimen and gets final product, specifically test procedure is as follows:
The first step: fixing test specimen one end is fixed on the anchor clamps, adjusts and load an axle lower end height it is contacted with loading specimen, and fix, the speed that torsion shear test is set is 0.05 commentaries on classics/min,
Second step: starter motor, the roller directional clutch can folk prescription to freely rotating, driving whole cutting mechanism rotates, the space of while clutch coupling inside, in the time of can ensureing electric motor starting, torsional shear mechanism does not start immediately synchronously, and begins rotation after a while again, vibration in the time of can avoiding electric motor starting like this is to the influence of shear resistance
The 3rd step: the data acquisition of torsion torque sensor directly by external computer control, is gathered stress and strain simultaneously, and is drawn its curve, every group of at least 3 parallel test specimens;
Site test:
The first step: adopting brill core machine that asphalt concrete layer is got into needs the test position, promotes corning machine, but core is not taken out, and adopts hair dryer the surperficial hot blast drying of using of core,
Second step: use seccotine handle shear test clamp head and the core identical with core diameter to bond together, at least 30 minutes begin later on to test,
The 3rd step: adjust a loading axle lower end height it is contacted with loading specimen, and fixing, the speed that torsion shear test is set is that 0.05 commentaries on classics/min carries out torsion shear test, test figure is gathered automatically by instrument, gathers data every 0.1s,
The 4th step: according to the moment of torsion of gathering can computation layer between the cohesive strength of binding material.
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Cited By (28)
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| CN101995357A (en) * | 2010-11-02 | 2011-03-30 | 东南大学 | Testing method for interlaminar shearing stress state |
| CN101738347B (en) * | 2009-12-10 | 2011-04-13 | 同济大学 | Indoor detection method for performance of waterproof adhesive layer material of cement concrete bridge |
| CN102175601A (en) * | 2010-12-24 | 2011-09-07 | 燕山大学 | Testing machine for evaluating cementing compound anti-torsion shearing performance |
| CN102297812A (en) * | 2011-05-20 | 2011-12-28 | 长安大学 | Torsional shear test device for asphalt pavement material and structure |
| CN102519873A (en) * | 2011-12-26 | 2012-06-27 | 同济大学 | Method for evaluating durability of steel bridge deck pavement waterproof bonding system |
| CN102692352A (en) * | 2012-06-25 | 2012-09-26 | 长安大学 | Bridge deck bonding layer torsional shearing device and detection method thereof |
| CN102879327A (en) * | 2012-10-16 | 2013-01-16 | 长安大学 | Device and method for estimating influence of surface lines on adhesion between asphalt and aggregates |
| CN103207120A (en) * | 2013-03-12 | 2013-07-17 | 大连理工大学 | Test device and test method for asphalt rotational shear creep and repeated creep recovery |
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| CN103743631A (en) * | 2014-01-15 | 2014-04-23 | 长沙理工大学 | Torsional shear test method for asphalt mixture |
| CN104142296A (en) * | 2014-06-15 | 2014-11-12 | 安庆帝伯格茨活塞环有限公司 | Device for inspecting bonding strength of piston ring chrome coating |
| CN104655499A (en) * | 2013-11-21 | 2015-05-27 | 交通运输部科学研究院 | Equipment for measuring interlamellar treatment measures torsional shear resistance between pavement structure layers |
| CN105092393A (en) * | 2015-09-10 | 2015-11-25 | 长安大学 | Torsion test device and method for concrete shear creep |
| CN105527164A (en) * | 2015-12-30 | 2016-04-27 | 银邦金属复合材料股份有限公司 | A sample adhering and stretching mold and a sample adhering and stretching method |
| CN108037071A (en) * | 2017-12-01 | 2018-05-15 | 鄂尔多斯市路泰公路工程有限责任公司 | Pavement structure interlayer bonds torque test device and method |
| CN108645791A (en) * | 2018-08-03 | 2018-10-12 | 中车青岛四方机车车辆股份有限公司 | A kind of icing adhesion strength test device |
| CN108982355A (en) * | 2018-06-27 | 2018-12-11 | 河海大学 | A kind of bituminous pavement interlayer bond state indoor simulation method based on Mashell molding method |
| CN109269876A (en) * | 2018-09-28 | 2019-01-25 | 苏交科集团广东检测认证有限公司 | A kind of highway subgrade pavement material intelligence pilot system |
| CN109490192A (en) * | 2018-11-15 | 2019-03-19 | 南京林业大学 | A kind of test method of pitch and coarse aggregate adhesion |
| CN110243758A (en) * | 2019-07-18 | 2019-09-17 | 河南省交通规划设计研究院股份有限公司 | Waterproof-and-binding layer bond performance scene fast non-destructive detection method |
| CN110308056A (en) * | 2018-03-27 | 2019-10-08 | 程彦 | A kind of masonry field shear test intensity turns to cut method detector |
| CN110320113A (en) * | 2019-07-19 | 2019-10-11 | 三峡大学 | A kind of interface Tu Yan undisturbed sample torsion shear apparatus and method |
| CN110421691A (en) * | 2019-08-14 | 2019-11-08 | 安徽省交通控股集团有限公司 | Bonding strength test model preparation method between Cement Concrete Deck Paving Course |
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2008
- 2008-04-29 CN CNA200810025565XA patent/CN101275903A/en active Pending
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| CN101995357A (en) * | 2010-11-02 | 2011-03-30 | 东南大学 | Testing method for interlaminar shearing stress state |
| CN102175601A (en) * | 2010-12-24 | 2011-09-07 | 燕山大学 | Testing machine for evaluating cementing compound anti-torsion shearing performance |
| CN102297812A (en) * | 2011-05-20 | 2011-12-28 | 长安大学 | Torsional shear test device for asphalt pavement material and structure |
| CN102519873A (en) * | 2011-12-26 | 2012-06-27 | 同济大学 | Method for evaluating durability of steel bridge deck pavement waterproof bonding system |
| CN102692352A (en) * | 2012-06-25 | 2012-09-26 | 长安大学 | Bridge deck bonding layer torsional shearing device and detection method thereof |
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| CN104655499A (en) * | 2013-11-21 | 2015-05-27 | 交通运输部科学研究院 | Equipment for measuring interlamellar treatment measures torsional shear resistance between pavement structure layers |
| CN104655499B (en) * | 2013-11-21 | 2018-03-30 | 交通运输部科学研究院 | Measure the antitorque equipment for cutting performance of road surface structare layer interlayer management measure |
| CN103743631A (en) * | 2014-01-15 | 2014-04-23 | 长沙理工大学 | Torsional shear test method for asphalt mixture |
| CN104142296A (en) * | 2014-06-15 | 2014-11-12 | 安庆帝伯格茨活塞环有限公司 | Device for inspecting bonding strength of piston ring chrome coating |
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| CN110308056A (en) * | 2018-03-27 | 2019-10-08 | 程彦 | A kind of masonry field shear test intensity turns to cut method detector |
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| CN110320113A (en) * | 2019-07-19 | 2019-10-11 | 三峡大学 | A kind of interface Tu Yan undisturbed sample torsion shear apparatus and method |
| CN110320113B (en) * | 2019-07-19 | 2021-08-31 | 三峡大学 | Soil-rock interface undisturbed sample torsional shear test device and method |
| CN110421691A (en) * | 2019-08-14 | 2019-11-08 | 安徽省交通控股集团有限公司 | Bonding strength test model preparation method between Cement Concrete Deck Paving Course |
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| CN111426630B (en) * | 2020-05-22 | 2022-08-30 | 合肥工业大学 | Measuring device and method for measuring coating interface bonding strength of sample |
| CN112834419A (en) * | 2020-12-30 | 2021-05-25 | 豪威半导体（上海）有限责任公司 | Frame glue adhesive force testing equipment and testing method thereof |
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