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A test method for the compressive strength of semi-rigid base core samples

A technology of semi-rigid base and compressive strength, which is applied in the direction of applying stable tension/compression to test the strength of materials and the preparation of test samples, which can solve the problem that engineering measures cannot be taken, and the strength of semi-rigid base cannot be scientifically evaluated and judged. , There is no semi-rigid base core sample compressive strength test and other problems, to achieve the accuracy of calculation results, reduce errors, and ensure the effect of the number of tests

Inactive Publication Date: 2017-09-19
北京市道路工程质量监督站
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The technical problem to be solved by the present invention is to provide a test method for the compressive strength of a semi-rigid base core sample, which solves the problem of the lack of a method for testing the compressive strength of the semi-rigid base core sample on the road in the service period in the prior art. The problem that it is impossible to scientifically evaluate and judge whether the strength of the semi-rigid base layer is qualified during the design and construction of road overhaul, and then it is impossible to take engineering measures to deal with it reasonably

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  • A test method for the compressive strength of semi-rigid base core samples
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  • A test method for the compressive strength of semi-rigid base core samples

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Embodiment 1

[0080] This embodiment provides a test method for the compressive strength of a semi-rigid base layer core sample, using the following instruments and equipment:

[0081] 1. Road coring drilling rig: traction or vehicle-mounted, the drilling rig is driven by an engine, and should be selected 150mm drill bit diameter, equipped with water spray cooling device; select the drill bit length according to the thickness of the pavement structure layer;

[0082] 2. Electronic balance: measuring range 15kg, sensitivity 0.1g;

[0083] 3. Sample container or iron plate, etc.;

[0084] 4. Sample label;

[0085]5. Press or universal testing machine: The press shall meet the requirements of the current "Hydraulic Pressure Testing Machine" (GB / T3722) and the General Technical Requirements for Testing Machines (GB / T 2611), and its measurement accuracy shall be ±1%. At the same time, it has a loading rate indicating device or a loading rate control device. The upper and lower platens are f...

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Abstract

The invention relates to a method for testing the compressive strength of a core sample of a semi-rigid base, comprising the following steps: selecting a drill core position, and drilling a core sample; inspecting and screening the drilled core sample; performing end surface treatment on the core sample, and Humidity treatment of the core samples after end surface treatment; compressive strength test; calculation of the test data to obtain the compressive strength of each core sample, and sorting and calculation of all the results of the calculated compressive strength to obtain the compressive strength of each set of data Compression value. The test method for the compressive strength of the semi-rigid base core sample provided by the invention can solve the problem of road overhaul design and construction due to the lack of a method for testing the compressive strength of the semi-rigid base core sample on the road in the service period in the prior art. It is impossible to scientifically evaluate and judge whether the strength of the semi-rigid base is qualified, and then it is impossible to take engineering measures to deal with it reasonably.

Description

technical field [0001] The invention relates to the technical field of traffic civil engineering, in particular to a strength test method, more specifically to a test method for the compressive strength of a semi-rigid base core sample. Background technique [0002] Compressive strength is one of the important strength indexes of road engineering materials. The compressive strength index is also an important mechanical index of highway base materials. The method of measuring the compressive strength is: follow certain technical procedures, make the sample under the condition of no reinforcement or restriction on the side, apply axial pressure until the sample is destroyed, and obtain the compressive strength of the sample. [0003] For the determination method of compressive strength index, "Highway Pavement Base Material Test Regulations" (JTJ057-85), "Highway Engineering Inorganic Binder Stable Materials Test Regulations" (JTJ057-94), "Highway Engineering Inorganic Binder...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08G01N1/28
Inventor 宋波周绪利薛忠军张涛王春明范俊英李兴海谢超张荣荣丛铖东
Owner 北京市道路工程质量监督站
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