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Publication numberCN102109442 B
Publication typeGrant
Application numberCN 201010598978
Publication date25 Jul 2012
Filing date21 Dec 2010
Priority date21 Dec 2010
Also published asCN102109442A
Publication number201010598978.4, CN 102109442 B, CN 102109442B, CN 201010598978, CN-B-102109442, CN102109442 B, CN102109442B, CN201010598978, CN201010598978.4
Inventors陈俊, 高英, 黄晓明
Applicant东南大学
Export CitationBiBTeX, EndNote, RefMan
External Links: SIPO, Espacenet
Fast test method of shearing resistance of bituminous mixture
CN 102109442 B
Abstract
The invention discloses a fast test method of the shearing resistance of an bituminous mixture, and provides a new method for testing the shearing performance of a bituminous mixture which bears torsional shearing in the horizontal direction and constant pressure stress in the vertical direction on the basis of borrowing the conventional shearing performance test theory and according to the practical significance of coulomb law and shearing strength. The method provided by the invention not only is applicable to the bituminous mixture newly stirred in a laboratory, but also can be used for estimating the shearing resistance of the bituminous mixture in an actual road surface; and by utilizing the fast test method, not only can the shearing resistance of the bituminous mixture be tested, but also the cohesion and an internal friction angle which play a role in determining the shearing strength of the bituminous mixture can be obtained, so that the content of the shearing damage of the bituminous mixture can be deeply understood and accurately mastered conveniently, and a test analyzing means is provided for the optimum design of the bituminous mixture based on the shearing resistance.
Claims(3)  translated from Chinese
1. 一种浙青混合料抗剪切性能的快速测试方法,其特征在于包括如下步骤:1).室内成型浙青混合料的马歇尔试件,并根据混合料的集料最大粒径对马歇尔试件进行不同长度的切割,获得浙青混合料圆柱体试件;2).采用高强度胶水或者环氧树脂,把浙青混合料圆柱体试件的顶部和底部与两个钢制模块紧密、牢固粘结;待胶水或树脂完全干燥后,把浙青混合料圆柱体试件与钢制模块放入目标温度的环境箱内保温2〜4小时;从环境箱内取出浙青混合料圆柱体试件和钢制模块,在新型扭转剪切仪上固定;3).当只需要测试浙青混合料的抗剪强度时,直接设置合适的扭转速率,进行混合料扭转剪切试验,获得剪切应力与扭转变形的曲线,并得到浙青混合料的抗剪强度;4).当需要测试浙青混合料的粘聚力和内摩擦角时,选择两个不同砝码重量4和施加于切向的法线方向,使浙青混合料圆柱体试件受到垂直压应力和巧的作用,并在相同的试验条件下分别进行剪切测试,获得相应的抗剪强度Ά和T2,并结合T1 = c + CT1 tan炉和T2 二c + O2 tan炉求解得出粘聚力e和内摩擦角Φ。 A Zhejiang green mix resistance to rapid testing methods shear properties, comprising the following steps: 1) Interior molding Zhejiang green mix Marshall specimens, and according to the mixing of aggregate maximum particle size of Marshall specimens of different cut lengths to obtain Zhejiang green mix cylindrical specimens; 2) high-strength glue or epoxy, the top and bottom Zhejiang green mix cylindrical specimens with two steel modules close , firm adhesion; glue or resin until completely dry, the Zhejiang green mix cylindrical specimens with steel module into the target temperature of the environment inside the insulation 2 ~ 4 hours; remove Zhejiang Green mixes cylinder chamber from the environment body specimens and steel modules, torsional shear in the new instrument fixed; 3) When you want to test the shear strength of Zhejiang green mix directly set the appropriate twist rate, mixed feed torsional shear test, get Shear stress and torsional deformation curve and get the shear strength of Zhejiang green mix; 4) When you need to test Zhejiang green mix cohesion and internal friction angle, choose two different weights and applying weight 4 in the normal direction tangential to make Zhejiang green mix cylindrical specimens subjected to vertical compressive stress and clever action, and shear tests are under the same experimental conditions, to obtain the corresponding shear strength of Ά and T2, and combining T1 = c + CT1 tan furnace and T2 two c + O2 tan furnace Solving for e cohesion and internal friction angle Φ.
2.如权利要求I所述的浙青混合料抗剪切性能的快速测试方法,其特征在于,所述步骤I)的浙青混合料圆柱体试件尺寸为:当混合料内集料的公称最大直径大于19_时,马歇尔试件需锯切成厚度为50_的圆柱体;当集料的公称最大直径小于19mm,大于12. 5mm时, 浙青混合料圆柱体试件的高度为40_。 2. The claim I said Zhejiang green mix fast shear performance test method, characterized in that said step I) of Zhejiang green mix cylinder specimen size: When the internal mixture aggregate of The maximum nominal diameter greater than 19_ Marshall specimens require cutting a thickness of 50 A cylinder; when the aggregate nominal maximum diameter of less than 19mm, more than 12. 5mm, height Zhejiang green mix cylindrical specimens of 40_.
3.如权利要求I所述的浙青混合料抗剪切性能的快速测试方法,其特征在于,所述步骤3)的合适扭转速率为O. 05转/min。 I claim the Zhejiang green mix shear resistance of the quick test method, wherein said step 3) the appropriate rate of O. 05 twisting turn / min.
Description  translated from Chinese

沥青混合料抗剪切性能的快速测试方法 Rapid testing methods shear resistance of asphalt mixture of

技术领域 Technical Field

[0001] 本发明属于浙青混合料力学性能测试的应用技术领域,具体涉及一种浙青混合料抗剪切性能的快速测试方法。 [0001] The present invention belongs to the field of application technology mix Zhejiang Green test the mechanical properties, in particular to a mixture Zhejiang Green shear resistance of rapid test methods.

背景技术 Background

[0002] 浙青混凝土路面因行车舒适、维修方便等优势在中国得到了十分广泛的应用。 [0002] Zhejiang green concrete pavement because of driving comfort, easy maintenance advantages in China has been very widely used. 浙青混合料作为浙青路面面层的主要修筑材料,其力学性能在很大程度上影响着路面结构的使用寿命和车辆的行驶安全性。 Zhejiang green mix as the main construction material Zhejiang green pavement, which greatly affects the mechanical properties of driving safety and service life of the pavement structure of the vehicle. 因此为了提高浙青路面的铺筑质量,对浙青混合料路用性能进行准确的测试和评价,并在此基础上进行浙青混合料的优化设计具有重要的现实意义。 Therefore, in order to improve the quality of Zhejiang green road paving, to Zhejiang Green Mixture accurate performance testing and evaluation, and on this basis to optimize the design of Zhejiang green mix it has important practical significance.

[0003]目前,浙青混合料的大部分力学性能在其设计过程中都得到了相应的评价,具体为:采用实验室内的疲劳试验测试混合料的疲劳性能;运用各种车辙试验评价混合料的抗车辙性能;结合劈裂试验或者冻融劈裂试验反映混合料的抗裂性能。 [0003] Currently, most mechanical properties Zhejiang green mixture in its design process have been a corresponding evaluation, specifically: the fatigue performance of the laboratory test fatigue test mixture; rut trials evaluating the use of a variety of mixed rutting resistance materials; binding split test or freeze-thaw splitting test reflects the mix of crack resistance. 然而,抗剪切作为浙青混合料重要的力学性能,在浙青混合料设计和性能评价过程中却往往被忽视。 However, the shear mechanical properties of Zhejiang as an important green mixture, mix in Zhejiang green design and performance evaluation process is often overlooked.

[0004] 究其原因,主要是目前的浙青混合料抗剪切性能测试繁琐、需要大型的设备,尚为形成统一的测试方法和标准,具体表现为:(I)作为最为常用的剪切测试方法,三轴试验需要MTS、UTM之类的大型、专业的测试设备,而且测试步骤复杂,对使用人员要求较高;(2)近年来同济大学、长安大学等研究机构发明的同轴剪切试验仪以及传统的扭转剪切仪只能简单的测试浙青混合料抗剪强度,并不能评价构成抗剪能力的浙青混合料粘聚力和内摩擦角等;(3)虽然同济大学采用贯入剪切测试仪与单轴压缩试验相结合的方法,可以确定浙青混合料粘聚力和内摩擦角,但测试涉及到两个试验,试验步骤繁多;另外,由于贯入试验和单轴压缩试验的对象并不是同一个试件,因此必然导致计算结果不够准确。 [0004] The reason is mainly present Zhejiang green mix shear performance testing cumbersome and require large-scale equipment, yet to form a unified test methods and standards, specific performance: (I) as the most common cut test methods, triaxial test requires MTS, UTM like a large, specialized test equipment and test procedures complex, higher requirements for the use of personnel; coaxial (2) In recent years, Tongji University and other research institutions Chang'an invention scissors cut tester as well as traditional torsional shear test instrument can simply Zhejiang green mixture shear strength and shear strength can not be evaluated constitute Zhejiang green mix cohesion and internal friction angle; and (3) although Tongji University using penetration shear tester combined with the uniaxial compression test method that can determine the Zhejiang green mix cohesion and internal friction angle, but the test involves two tests, test many steps; in addition, due to the penetration test and uniaxial compression test object is not the same specimen, it will inevitably lead to inaccurate results.

[0005] 由上述介绍可见,目前的浙青混合料抗剪性能测试方法或多或少都存在着不足, 尤其是各种测试方法都不能简单而准确的测试得到浙青混合料的粘聚力和内摩擦角,而上述两个指标正是全面、准确的评价浙青混合料抗剪性能的关键,也是进行基于抗剪切性能的浙青混合料优化设计的基础。 [0005] seen from the above description, the current Zhejiang Green Mixture Shearing performance test methods more or less there is a shortage, in particular the various test methods are not simple and accurate test result Zhejiang green mix cohesion and internal friction angle, while the two indicators is the comprehensive and accurate evaluation Zhejiang Green Shear Characteristics of the key, is the basis on shear resistance of Zhejiang green mix design optimization. 因此,设计一种浙青混合料抗剪切的快速有效测试方法对于完善浙青混合料性能评价体系具有十分重要的现实意义。 Therefore, the design of a fast and effective mix Zhejiang Green Test Method for Shear Perfection Zhejiang green mixed performance evaluation system has a very important practical significance.

发明内容 DISCLOSURE

[0006] 技术问题:本发明的目的在于针对现有技术的不足,提供一种浙青混合料抗剪切性能的快速测试方法。 [0006] Technical Problem: The purpose of the present invention is the deficiency of the prior art and to provide a green mixture Zhejiang shear resistance of rapid test methods.

[0007] 技术方案:本发明所述的浙青混合料抗剪切性能的快速测试方法,是在借鉴现有扭转剪切在浙青混合料领域成功使用经验的基础上,根据库仑定律和剪切强度的实际意义,提出了水平方向承受扭转剪切、竖直方向承受恒定压应力的浙青混合料剪切性能测试新方法。 [0007] Technical Solution: Zhejiang green mixture of fast shear resistance test method according to the invention, is to draw on existing torsional shear successful experience in the field of Zhejiang green mix basis, according to Coulomb's law and scissors The actual meaning of shear strength is proposed to withstand the torsional shear horizontal, vertical Zhejiang Green Mixture novel technique for measuring constant shear stress tolerance.

[0008] 本发明的浙青混合料抗剪切性能的快速测试方法包括如下步骤: [0008] Zhejiang green mixture shear resistance of rapid testing methods of the present invention comprises the steps of:

3[0009] I).室内成型浙青混合料的马歇尔试件,并根据混合料的集料最大粒径对马歇尔试件进行不同长度的切割,获得浙青混合料圆柱体试件; 3 [0009] I) Zhejiang green interior molding mixes Marshall specimens, and according to the aggregate maximum particle size of the mixture of Marshall specimens cut in different lengths to obtain Zhejiang green mix cylindrical specimens.;

[0010] 2).采用高强度胶水或者环氧树脂,把圆柱体试件的顶部和底部与两个钢制模块紧密、牢固粘结。 [0010] 2) high-strength glue or epoxy, the top and bottom of the cylinder specimen with two steel modules tight, strong bond. 待胶水或树脂完全干燥后,把试件与钢制模块放入目标温度的环境箱内保温2〜4小时;从环境箱内取出试件和钢制模块,在新型扭转剪切仪上固定; After the glue or resin is completely dried, the specimen with the steel module into the target temperature of the environment inside the insulation 2 ~ 4 hours; remove the specimen chamber and steel module from the environment, fixed in the new torsional shear apparatus;

[0011] 3).当只需要测试浙青混合料的抗剪强度时,直接设置合适的扭转速率,进行混合料扭转剪切试验,获得剪切应力与扭转变形的曲线,并得到浙青混合料的抗剪强度; [0011] 3) When you want to test the shear strength of Zhejiang green mix directly set the appropriate twist rate, were blended mixture Zhejiang Green torsional shear test, shear stress and torsional deformation obtained curves, and get Shear strength materials;

[0012] 4).当需要测试浙青混合料的粘聚力和内摩擦角时,选择两个不同砝码重量 [0012] 4) When you need to test Zhejiang green mix cohesion and internal friction angle, select two different weights weight

I和6施加于切向的法线法向,使浙青混合料试件受到垂直压应力T和%的作用,并在相同的试验条件下分别进行剪切测试,获得相应的抗剪强度A和T1,并结合T1 = c + Cr1 tan炉和T2 = c + σ2 tan逆求解得出粘聚力c和内摩擦角从 I and 6 applied to the tangential normal method to enable Zhejiang green mixture specimen subjected to vertical compressive stress T and% role, and under the same test conditions, shear test, respectively, to obtain the corresponding shear strength A and T1, and combining T1 = c + Cr1 tan furnace and T2 = c + σ2 tan inverse Solving for cohesion c and internal friction angle from

[0013] 所述步骤I)的浙青混合料圆柱体试件尺寸为:当混合料内集料的公称最大直径大于19mm时,马歇尔试件需锯切成厚度为50mm的圆柱体;当集料的公称最大直径大于12. 5mm时,混合料圆柱体试件的高度为40mm。 [0013] The step I) of Zhejiang green mix cylindrical specimens dimensions: when the mixing Aggregate nominal maximum diameter greater than 19mm, Marshall specimens need cutting thickness of 50mm cylinder; when set When the material is greater than the nominal maximum diameter 12. 5mm, height mix cylindrical specimens is 40mm.

[0014] 所述步骤3)的合适扭转速率不宜过大,一般建议速率为O. 05转/min。 [0014] The step 3) is appropriate to reverse the rate should not be too large, generally recommended rate of O. 05 turn / min.

[0015] 有益效果:本发明是浙青混合料抗剪强度,尤其是粘聚力和内摩擦角的快速检测方法,也是评价浙青混合料的抗剪切性能,并据此进行混合料优化设计的重要手段,发明在以下几方面具有明显的优势。 [0015] Advantageous Effects: The present invention Zhejiang green mixture shear strength, especially cohesion and rapid detection of internal friction angle, but also evaluate the Zhejiang green mixture shear resistance, and accordingly mix optimization an important means of design, the invention has a distinct advantage in the following aspects.

[0016] (I)本发明不但可以测试浙青混合料的抗剪强度,还可以通过变化测试过程中与剪切方向垂直的压应力,测试构成浙青混合料抗剪性能的最重要的力学指标:粘聚力和内摩擦角。 [0016] (I) of the present invention can not only test the shear strength of Zhejiang green mix, you can also change the course of testing the compressive stress and shear direction perpendicular to the test constitute the most important mechanical Zhejiang Green Mixture Shearing Performance Indicators: cohesion and internal friction angle.

[0017] (2)本发明涉及的浙青混合料试件是传统的马歇尔试件,无需旋转压实成型和多次钻孔成型,且测试过程方便、简洁。 [0017] (2) Zhejiang Green mixture specimen of the present invention relates to a conventional Marshall specimens without compaction molding and rotational molding multiple drilling and testing process easy, simple.

[0018] (3)本发明不仅适用于新拌浙青混合料的剪切性能测试,还可以通过钻孔取芯的方法,研究路面原有浙青混合料的抗剪切性能。 [0018] (3) The present invention is applicable not only to the fresh green mix Zhejiang shear performance testing, but also through coring method, Zhejiang Green Pavement original mix shear resistance.

附图说明 Brief Description

[0019] 图I为无竖向压应力时浙青混合料扭转剪切的测试原理图。 [0019] Figure I is a non-vertical stress Zhejiang green mix torsional shear test diagram.

[0020] 图2为有竖向压应力时浙青混合料扭转剪切的测试原理图。 [0020] FIG. 2 is a vertical stress when there are Mixture Zhejiang Green torsional shear test diagram.

[0021] 图3为无竖向压应力时浙青混合料扭转剪切试验曲线。 Zhejiang green mixture torsional shear test curve [0021] FIG. 3 is a non-vertical stress.

[0022] 图中有:1-扭转连杆;2_顶部钢制模块;3_浙青混合料圆柱体试件;4_底部钢制模块;5_扭转加载方向;6-$去码。 [0022] FIG. There are: 1 - reverse link; 2_ top steel module; 3_ Zhejiang green mix cylindrical specimens; 4_ bottom steel module; 5_ torsional loading direction; 6- $ to code.

[0023] 具体实施方式 [0023] DETAILED DESCRIPTION

[0024] 本发明所述的浙青混合料抗剪切性能的快速测试方法,具体包括如下步骤: [0024] Zhejiang green hybrid material of the present invention shear resistance of rapid test methods, including the following steps:

[0025] 浙青混合料试件的制备 Preparation [0025] Zhejiang green mix specimen

[0026] ①试件的成型与制备 [0026] molding and specimen preparation ①

[0027] 当测试实验室内新拌浙青混合料的抗剪切性能时,由浙青混合料的设计级配和油石比,按照《公路工程浙青及浙青混合料试验规程》(JTJ052-2000)相关试验方法成型马歇尔试件,双面击实各75次,每组试件的数目不少于4个,试件脱模后备用。 [0027] When the shear resistance within the test lab Zhejiang fresh green mix by Zhejiang green mix design gradation and aggregate ratio, according to "green Zhejiang Highway Engineering and Zhejiang green mix testing procedures" (JTJ052 -2000) Standard Test Method for forming related Marshall specimen compaction of each double-sided 75 times less than the number of samples in each group of four, the specimen releasing reserve. 当测试实际路面中浙青混合料的抗剪切性能时,采用钻孔取芯的方法,直接从路面结构中钻取试件,选取相对完整的试件备用。 When the shear resistance test in actual road Zhejiang green mix, using coring method, direct drill samples from the pavement structure, choose a relatively complete specimen spare.

[0028] ②试件的切割与检测 [0028] cutting and testing the specimen ②

[0029] 参照美国SHRP项目的研究成果,为了保证剪切试验结果的可比性,需要把马歇尔试件或者钻孔获得的试件切割成具有一定高度的圆柱体试件,对于公称最大直径不小于19mm的浙青混合料,把制备的马歇尔试件锯切成厚约50_的试件;对于公称最大直径为不小于12. 5mm的浙青混合料,把制备的马歇尔试件锯切成厚约40mm的试件。 [0029] Referring to the American SHRP research project, in order to ensure comparability of shear test results, we need to Marshall specimen or specimens obtained by drilling cut a certain height of cylindrical specimens, the nominal maximum diameter of not less than 19mm Zhejiang green mixture, the Marshall specimens prepared 50_ cutting into thick specimens; for the nominal maximum diameter of not less than 12. 5mm Zhejiang green mixture, the Marshall specimens prepared cutting into a thick about the test piece of 40mm. 为了保证扭转剪切测试结果的准确性,需对圆柱体试件顶面是否平行与底面进行检测,用游标卡尺在十字对称的4个方向量测圆柱体试件的高度,如两侧高度差大于2mm时,此试件作废。 In order to ensure the accuracy of the torsional shear tests, the need for cylinder specimen surface is parallel to the top and the bottom to detect the height of the cross with a caliper symmetrical four directions measured cylindrical specimens, as both sides of the height difference is greater than When 2mm, this specimen void.

[0030] 2、试件的安装与养生 [0030] 2, specimen mounting and health

[0031] 选择在低于60C的环境下不发生变形的高强度胶水或者环氧树脂,并在圆柱体试件的上下表面分别涂抹高强度胶水或者环氧树脂,并把圆柱体试件安放于钢制模块内,轻轻压实试件5分钟后,待胶水或树脂完全干燥,试件与钢制模块牢固粘结后,剔除圆柱体外多余的环氧树脂。 [0031] select at temperatures below ambient to 60 C without deformation of high strength glue or epoxy resin, and the upper and lower surfaces of cylindrical specimens were coated high-strength glue or epoxy, and the cylindrical specimens placed in the steel module, gently compacted specimen for 5 minutes, until the glue or resin is completely dried, firm adhesion, eliminate excess epoxy resin outer cylinder specimen and the steel modules. 用游标卡尺在十字对称的4个方向量测混合料试件与钢制模块组成的圆柱体的高度,如两侧高度差大于2mm时,此试件作废。 With calipers in four directions symmetrical cross measurement mixture specimen with a steel module consisting of a cylinder of height, such as when both sides of the height difference is greater than 2mm, this specimen void. 把合格的试件与钢制模块一起,放入一定温度的环境箱中,经保温2〜4小时后取出备用。 The qualifying test piece of steel modules together, put me in a certain temperature environment, the heat removed after 2 ~ 4 hours standby.

[0032] 3、试件的抗剪性能的测试 [0032] 3, shear behavior of specimen test

[0033] 把从环境箱中取出的试件和钢制模块一起立即安放于浙青混合料剪切测试仪内, 使试件底端模块固定在夹具上;调整测试仪的加载连杆,使其刚好与试件的上部钢制模块内卡槽底部相接触,并放置重量为d的砝码于上部钢制模块上(具体质量根据研究问题的不同作相应的调整)。 [0033] removed from the environment of the specimen chamber and steel modules together immediately placed in the Zhejiang green mix shear tester, so that the bottom of the specimen fixed in the fixture module; tester load adjustment link, so it is just in contact with the bottom of the slot in the upper module steel specimen, and the weight of weight placed d (particularly for quality adjusted according to different research questions) to the upper steel block. 设置扭转剪切试验的速度(通常为O. 05转/min),启动测试仪的电机, 使加载连杆做单方向的转动,从而带动上部钢制模块以其中心为原心对圆柱体浙青混合料试件作扭转剪切。 Set torsional shear test speed (typically O. 05 turn / min), the motor starts tester, the loading rod is rotated in one direction, so as to drive the upper steel module with its center core of the original cylinder Zhejiang Green mixture specimen for torsional shear. 在测试过程中,剪切测试仪通过扭力传感器可以采集得到扭矩,并得到剪切破坏过程中的最大扭矩Γ ( Nm )。 During the test, the shear tester by torque sensor can capture obtain torque and shear failure of the process to obtain maximum torque Γ (Nm).

[0034] 4、浙青混合料抗剪强度、粘聚力和内摩擦角的计算 [0034] 4, calculated Zhejiang green mixture shear strength, cohesion and angle of internal friction

[0035] 根据式(I)可以容易的确定得到距离浙青混合料圆柱体试件圆心距离为P—点上的抗剪强度I。 [0035] According to formula (I) can be readily determined to get away from Zhejiang green mix cylindrical specimens distance of the center point of the shear strength of the P- I. [0036] [0036]

Figure CN102109442BD00051

[0037] 其中,Γ是浙青混合料试件受剪切过程中的测试机采集到的最大扭矩(Nm ); h为圆柱体试件的极惯性矩,对于直径为的圆柱体试件可根据式(2)计算。 [0037] where, Γ is Zhejiang green mixture specimen by shearing test machine to collect the maximum torque (Nm); h for the polar moment of inertia of cylindrical specimens, diameter of the cylindrical specimens can be (2) calculated according to the formula. [0038] [0038]

Figure CN102109442BD00052

[0039] 因此,对于常规的马歇尔试件,其剪切破坏时的强度是 [0039] Thus, with the conventional Marshall specimens, the shear strength is destroyed

[0040] [0040]

Figure CN102109442BD00053

[0041] 由于浙青混合料的剪切满足库伦定律,即在法向应力变化范围不大时,抗剪强度与法向应力的关系近似为一条直线。 [0041] Since the cut meet Coulomb's law Zhejiang green mix, that is, when the normal range is not stress, shear strength and normal stress of the relationship is approximately a straight line. 因此,若要计算浙青混合料的粘聚力和内摩擦角,则需要进行两次具有不同竖向压应力的剪切试验。 Therefore, to calculate the Zhejiang green mix cohesion and internal friction angle, shear test is required twice with different vertical compressive stress. 反映在实验过程中,只要变化剪切试验过程中对圆柱体试件施加的砝码重量a ( N ),并求解式(3)和式(4)方程组即可获得粘聚力和内摩擦角※。 Reflected in the experiment, as long as the change in the shear test weight is applied during the course of cylindrical specimens of weight a (N), and solving the equation (3) and (4) equations to obtain the cohesion and internal friction angle ※.

[0042][0043] [0042] [0043]

Figure CN102109442BD00061

[0044] 其中,T1, T2分别是两次剪切试件得到的混合料抗剪强度Λ,^分别是两次试 [0044] where, T1, T2 are the two shear specimen obtained mixture shear strength Λ, ^ were two attempts

验过程中对混合料试件施加的竖向压应力,它们可根据下式计算。 Inspection process is applied to vertical mix specimen compressive stress, which can be calculated according to the following formula.

[0045] [0045]

Figure CN102109442BD00062

[0046] 下面结合附图,通过实施例对本发明技术方案进行详细说明,但是本发明的保护范围不局限于所述实施例。 [0046] The following combination of figures, by way of example aspect of the present invention will be described in detail, but the scope of the present invention is not limited to the embodiments.

[0047] 实施例:一种浙青混合料抗剪切性能的快速测试方法,包括如下步骤: [0047] Example: one green mix Zhejiang shear resistance of the quick test method comprising the steps of:

[0048] ( I)浙青混合料试件的制备 [0048] Preparation of (I) Zhejiang Green mix specimen

[0049] 按照需要评价的浙青混合料的级配和油石比,在实验室内成型三组共12个马歇尔试件,试件的空隙率按照设计空隙率加以控制。 [0049] The need to evaluate the Zhejiang green mix gradation and aggregate ratio, forming three groups in the laboratory a total of 12 Marshall specimens, the porosity of the specimen to be controlled in accordance with the design porosity. 把成型后的马歇尔试件,进行切割、磨平处理,具体为:对于公称最大直径不小于19_的浙青混合料,把制备的马歇尔试件锯切成厚约50_的试件;对于公称最大直径为不小于12. 5mm的浙青混合料,把制备的马歇尔试件锯切成厚约40_的试件。 The Marshall specimens after molding, cutting, polished treatment, in particular: the nominal maximum diameter of not less than 19_ Zhejiang green mixture, the Marshall specimens prepared in a thickness of about 50_ cutting specimens; for nominal maximum diameter of no less than 12. 5mm Zhejiang green mixture, the Marshall specimen preparation cutting into thick specimens 40_ of. 把切割后得到的圆柱体试件于放置常温空气中,直至试件表面干燥。 After cutting the cylindrical specimens was allowed to stand at room temperature in air, until the specimen surface is dry.

[0050] (2)剪切试验前的准备 [0050] (2) Preparation before shear test

[0051] 在圆柱体试件的顶部和底部均匀的涂抹高强度胶水,并取新型剪切测试仪的两个钢制模块,分别与试件的顶部与底部相粘合,并保持试件垂直放置于水平地面或者工作台上至少5分钟,直至试件与钢制模块完全、牢固的粘结。 [0051] spread evenly at the top and bottom of the cylindrical specimens of high strength glue, and take the new two steel shear tester modules, respectively top and bottom of the specimen with the adhesive, and the specimen holding vertical placed on level ground or the bench for at least 5 minutes, until the specimen is completely and firmly bonded with the steel module. 用刀片刮去,裸露在圆柱体试件外部的多余I父水后备用。 Scrape with a razor blade, after the specimen exposed outside of the cylinder I Father excess water use.

[0052] (3)剪切试验 [0052] (3) shear test

[0053] 当需要测试浙青混合料45C的抗剪切性能时,设定温度箱的目标温度为45C,并把圆柱体试件和与之紧密粘合的两钢制模块一起放入温度箱内。 [0053] When it is desired to test Zhejiang Green Mix 45 C when the shear performance, the set temperature tank target temperature of 45 C, and the cylindrical specimens and a closely bonded together two steel module into the temperature inside. 保温2〜4小时后从环境温度箱中立即取出试件和模块,并安放于测试仪上。 2 ~ 4 hours after incubation remove the specimen and modules from ambient chamber immediately, and placed on the tester. 然后,设定扭转剪切的速率,分别对一组4个试件进行无竖向应力的水平扭转剪切测试,获得45C时该浙青混合料的扭转剪切曲线,如图2所示,并由此得到其抗剪强度。 Then, set the torsional shear rate, respectively, a group of four specimens without vertical stress level of torsional shear test, get 45 C when the Zhejiang green mix torsional shear curve, as shown in Figure 2 show, and to obtain its shear strength. 当需要测试浙青混合料的粘聚力和内摩擦角时, When you need to test Zhejiang green mix cohesion and internal friction angle,

设定施加于试件垂直方向砝码重量和6,并分别测试并获得不同砝码重量下的抗剪强度5和『把试验结果带入式(3)和式(4)即可计算得到粘聚力c和内摩擦角Φ。 Setting the vertical direction is applied to the specimen weight by weight and 6, and were tested and the shear strength of different weights under the weight of five and "The test results can be calculated into the formula (3) and (4) to give the stick friction angle Φ c and internal cohesion.

[0054][0055] [0054] [0055]

Figure CN102109442BD00063
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