FRCM plate prestress applying and loss monitoring process and product thereof

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.

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...

AI Technical Summary

Problems solved by technology

[0008] 1) The reliability of the anchorage is poor;

[0009] 2) The versatility of the anchorage is poor, there are many carbon fiber grids, the cooperative force performance is not good, and it is impossible to anchor a single fiber bundle;

[0010] 3) The manufacturing process of the anchorage is more complicated and the cost is higher;

[0011] 4) Due to the poor shear resistance of carbon fiber materials and its own sensitivity to defects, the manufacturing process of these anchorage systems is complicated, the size is large, the reliability is poor, and the cost is also relatively expensive, so it is not convenient to use in large quantities in engineering applications. Promote application

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