Variable thickness single fiber pull-out cement-based test piece mould and adjusting and testing method

A single-fiber, cement-based technology, applied in the preparation of test samples, manufacturing tools, ceramic molding machines, etc., can solve problems such as impact, achieve strong operability, avoid the risk of damage, and easy demoulding

Active Publication Date: 2019-05-31
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the cutting process inevitably leads to the destruction of the fiber and matrix section, which affects the experimental results

Method used

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  • Variable thickness single fiber pull-out cement-based test piece mould and adjusting and testing method
  • Variable thickness single fiber pull-out cement-based test piece mould and adjusting and testing method
  • Variable thickness single fiber pull-out cement-based test piece mould and adjusting and testing method

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0034] The invention provides a variable-thickness single-fiber-extracted cement-based test piece mold and an adjustment and testing method, which can obtain a single-fiber-extracted cement-based test piece with a specified thickness without loss of the test piece. The invention can pour multiple single-fiber pull-out cement-based test pieces at one time, has simple structure, strong operability, and easy demoulding, and there are partition plates between each test piece, which can be formed independently, and can be adjusted by adjusting The thickness of the poured specimen can be adjusted by adjusting the position of the flank module, thereby eliminating the cutting process in the traditional method and avoiding the risk of fiber / matrix interface damage caused by cutting.

[0035] attached figure 1 And attached figure 2 The states before an...

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PUM

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Abstract

The invention provides a variable thickness single fiber pull-out cement-based test piece mould and an adjusting and testing method. The mould comprises a bottom plate, a framework, stand columns, side wing upper and lower modules and partition plates. All the portions are connected through screws and the like. A test piece thickness adjusting method based on the mould is provided, and a specified-thickness single fiber pull-out cement-based test piece can be obtained on the premise that the test piece is not cut. By means of the mould and the method provided by the invention, a plurality of single fiber pull-out cement-based test pieces can be poured at a time, the structure is simple, the operability is high, demoulding is easy, and in addition, the test pieces are spaced through the partition plates and independently formed; and meanwhile, the thicknesses of the poured test pieces can be adjusted by adjusting the positions of the side wing modules, accordingly, a cutting process ina traditional method is omitted, and the risk of damage to a fiber/substrate interface due to cutting is avoided.

Description

technical field [0001] The invention relates to the testing field of fiber-reinforced cement-based materials, in particular to a cement-based specimen mold for pulling out single fibers with variable thickness and an adjustment and testing method. Background technique [0002] High-toughness fiber-reinforced cementitious composites (Engineered Cementitious Composites, ECC) is a new type of material with ultra-high ductility, impact resistance, durability, crack resistance and strain hardening properties, which overcomes the existence of traditional cement-based materials. Disadvantages such as low tensile strength, low deformation ability, high brittleness and poor impact resistance. The mechanical properties of this kind of composite material mainly depend on the cross-sectional bonding performance of the fibers inside it and the cement matrix, and the parameters of this performance are mainly obtained through the single fiber pull-out experiment. , [0003] Previously, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B7/00B28B1/52B28B1/087G01N1/36
Inventor 鲁聪潘金龙罗保宏
Owner SOUTHEAST UNIV
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