FRCM plate prestress applying and loss monitoring process and product thereof

A monitoring process and prestressing technology, applied in force/torque/work measuring instruments, measuring devices, building reinforcements, etc., can solve the problems of single fiber bundle anchorage, poor shear resistance of carbon fiber materials, high cost, etc., to achieve increased Large contact area and roughness, convenient prestress loss monitoring, and the effect of improving the tensile strength
CN114396136APending Publication Date: 2022-04-26ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2022-04-26

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Abstract

The invention discloses an FRCM plate prestress applying and loss monitoring process and a product thereof. The process comprises the following steps: laying a fiber net in a mold cavity, enabling one end of a longitudinal fiber bundle to penetrate through a second end baffle which is fixedly arranged, and then sequentially penetrating into a second load sensor and a second wave-shaped anchorage device; the other end of the first load sensor penetrates through the base plate, the first load sensor and the first sleeve in sequence and is fixedly connected with the counter-force frame and the center hole jack through the fiber bundle clamp, the clamp screw and the nut; jacking the cross-core jack to drive the fiber bundle clamp to move, tensioning the longitudinal fiber bundle until the reading of the second load sensor reaches the standard, and screwing a nut at the counter-force frame to complete tensioning; a first wave-shaped clamping piece is arranged in a first sleeve to be assembled into a first wave-shaped anchorage device, and the first wave-shaped anchorage device tightly abuts against a first load sensor; and pouring, maintaining, removing the mold, reversely rotating the nuts at the counter-force frame to perform pre-stress releasing, and cutting off the longitudinal fiber bundles to obtain the FRCM plate.
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Description

technical field

[0001] The invention relates to the technical field of fiber fabric reinforced cement-based composite materials, in particular to an FRCM board prestressing and loss monitoring process and its products. Background technique

[0002] Fiber reinforced cementitious composite material (Fabric Reinforced Cementitious Mortar, referred to as FRCM), is a new type of composite material, which is a combination of multiaxial fiber braided mesh and fine concrete or mortar. The fiber braided mesh can be arranged along the principal stress direction, or can be Two-way or multi-way arrangement. Since the fiber materials used, such as alkali-resistant glass fiber, carbon fiber, aramid fiber, basalt fiber, polyphenylene benzoxazole fiber, etc., have the advantages of corrosion resistance and chemical erosion prevention, the requirements for the thickness of the concrete protective layer are relatively low , the thickness of the structural unit mainly depends on the necessary...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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