Self-compacting concrete mixture stability test device and test method for filling layer

A self-compacting concrete, stability testing technology, applied in the direction of measuring devices, flow characteristics, instruments, etc., can solve the problems of harsh performance and stability of self-compacting concrete, unable to evaluate the stability of self-compacting concrete mixture, etc., to achieve reliable performance , simple structure, ensure the effect of bonding performance

Active Publication Date: 2017-06-09
CENT SOUTH UNIV
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Problems solved by technology

Obviously, the construction object involved in the present invention—the slab track filling layer is a special structure, which puts forward more stringent requirements on the performance of self-compacting concrete, especially the stability performance. The high-strength precast concrete track slab is well bonded, which requires that the self-compacting concrete of the poured filling layer has good overall uniformity, and no slurry layer or bubble layer will appear on the upper surface. The above-mentioned existing methods cannot be used to evaluate self-compacting concrete mixing. The above stability of the substance

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  • Self-compacting concrete mixture stability test device and test method for filling layer
  • Self-compacting concrete mixture stability test device and test method for filling layer

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0039] see figure 2 , The filling layer self-compacting concrete mixture stability test device is composed of a tripod support 1, a surface layer slurry thickness tester 2 and a stainless steel cylinder 3. The tripod support 1 is made of stainless steel, and the three legs form a Arranged at 120°, the height of the tripod 1 is 250mm, the lower horizontal distance between the three legs of the tripod 1 is 300mm, and the upper horizontal distance is 100mm, and the upper center of the tripod 1 is set with a hole diameter of Ф6mm and a length of 20mm. Conduit 6; the geometric dimensions of the stainless steel cylinder 3 are Ф200mm in diameter, 110mm in height, and 2mm in wall thickness. Rod 4 and 4 blades 5 are composed, and 4 blades 5 are welded and fixedly installed on the lower end of central rod 4. Adjacent blades 5 are arranged at 90° to eac...

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Abstract

The invention discloses a device for testing the stability of a self-compacting concrete mixture of a filling layer and a testing method thereof. In the center of the bottom of the support, the surface layer slurry thickness tester (2) is vertically installed in the hollow conduit (6) at the center of the support directly above the cylindrical tube and tightened The fastener is fixed, and the surface layer slurry thickness tester (2) can freely fall downward along the support after the fastener is loosened. The method of the invention has the characteristics of simple operation, convenient use, scientific rationality, etc., and wide application range, and is especially suitable for the construction quality control of self-compacting concrete of CRTSⅢ slab ballastless track filling layer or similar structures.

Description

technical field [0001] The invention relates to a performance test and evaluation method of railway engineering materials, in particular to a test device and evaluation method for the stability of self-compacting concrete mixture used for filling layers of type III slab ballastless tracks of high-speed railways. Background technique [0002] my country's high-speed railway construction technology has achieved world-renowned achievements, and its construction and operation mileage ranks first in the world. At present, the track structure of my country's high-speed railway mainly adopts ballastless track technology, which covers a variety of slab ballastless track structures such as CRTSI type, CRTS II type and CRTS III type. The filling layer is the key component and core technology of the above track structure. CRTSI and CRTS Ⅱ slab ballastless track adopt cement emulsified asphalt mortar filling layer technology, which is a ballastless track technology through introduction,...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N11/10
Inventor 龙广成刘赫马昆林谢友均
Owner CENT SOUTH UNIV
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