Detachable mold used for adhesion test of PVA fiber bundles and cement-based material

A cement-based material and bonding test technology, which is applied in the preparation of test samples, etc., can solve the problems of reducing the accuracy and authenticity of the experiment, reducing the accuracy of the test piece, and prone to dislocation and movement, so as to achieve convenient disassembly and improve Integrity rate and the effect of ensuring accuracy

Pending Publication Date: 2018-04-27
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology

The expansion joints made by the existing mold are made of the end of the pre-embedded small steel plate. However, the pre-embedded small steel plate is prone to misalignment and movement during the vibration process of the cement-based composite material, which makes the size of the pre-fabricated crack different from the design size, reducing the The accuracy of the test piece is reduced, thereby reducing the accuracy and authenticity of the experiment

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  • Detachable mold used for adhesion test of PVA fiber bundles and cement-based material

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Embodiment Construction

[0025] Aiming at some technical problems in the above-mentioned existing molds, the device of the present invention provides a three-point bending bonding performance of PVA fiber bundles and cement-based composite materials with simple structure, convenient demoulding, accurate sample size, and accurate detection. Removable molds for forming test pieces.

[0026] This mold comprises base plate (1), side plate (2), end plate (3), external threaded rod (4) and large partition (6); side plate (2), end plate (3) and large partition ( 6) Set on the bottom plate (1), the side plates (2) are arranged side by side in parallel, and the two end plates (3) are respectively arranged at both ends of the side plate (2) and form a groove structure with the side plate (2), the large partition (6) Set in the trough structure; reserve holes for the fiber bundles to pass through at the same height position of the large partition and the end plate and keep the hole sizes consistent. Pass the fi...

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Abstract

A detachable mold used for adhesion test of PVA fiber bundles and cement-based material includes: a bottom plate, side plates (2), two end plates (3), an outer threaded rod (4) and a large separationboard (6), wherein the side plates (2), end plates (3) and large separation board (6) are disposed on the bottom plate (1). The side plates are arranged in parallel, wherein the two end plates (3) arerespectively arranged at two ends of the side plates to form a groove structure with the side plates. The large separation board (6) is located in the groove structure. At the same height, holes arereserved in the large separation board (6) and the end plates for enabling the fiber bundles to pass through, sizes of the holes being equal. The mold allows a test piece to be detached conveniently,can increase the completeness of the shaped test piece and guarantees precision of a prefabricated seam, so that test data is more actual and reliable. The mold has simple structure and can improve test piece shaping efficiency.

Description

Technical field: [0001] The patent of the invention relates to a detachable mold for a cement-based composite material test piece, in particular to a detachable mold for forming a three-point bending bonding performance test block of PVA fiber and cement-based composite material. Background technique: [0002] To measure the bonding performance of PVA fibers and cement-based composites from a microscopic point of view, it is necessary to evenly distribute the PVA fibers on a certain level of the cement-based composite specimens, and ensure that the PVA fibers are in a horizontal state in the cement-based composites. The test piece made by the existing mold cannot ensure that the fibers are evenly distributed on the cement-based composite material test piece at a certain height and level, and at the same time, it cannot meet the requirements that the fibers maintain a horizontal state in the cement-based composite material test piece. [0003] For the specimens subjected to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 王耀明黄志强马晨峰苏文轩王柔潘雨婷王瑜婷
Owner SHENYANG POLYTECHNIC UNIV
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