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Modified glass steel bar applied for reinforcing concrete as well as preparation method and application of modified glass steel bar

A technology for reinforcing concrete and steel bars, which is applied in the field of building materials, can solve problems such as imperfect structures and properties, and achieve the effects of improving corrosion resistance and water seepage resistance, increasing tensile strength and bending strength, and improving overall performance

Inactive Publication Date: 2020-01-03
SHANGHAI HUDA INVESTMENT & DEV CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when polymer materials are introduced into concrete materials with great differences in performance, its structure and performance have not yet been perfected, and there are many aspects worthy of modification

Method used

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  • Modified glass steel bar applied for reinforcing concrete as well as preparation method and application of modified glass steel bar

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The preparation of embodiment 1 thermosetting glass reinforcement

[0046] Get 60 parts by weight of untwisted glass fiber filaments, impregnate 20 parts by weight of unsaturated polyester, in the impregnated unsaturated polyester, also add 1 part by weight of aramid pulp, 10 parts by weight of wollastonite filler (preferably acicular wollastonite). The impregnated untwisted glass fiber filaments are continuously extruded and pultruded, and then cut to obtain glass steel bars of required length. The tensile strength of the obtained FRP can reach 200MPa, and the bending strength can reach 300MPa.

Embodiment 2

[0047] The preparation of embodiment 2 thermosetting glass reinforcement

[0048] Take 70 parts by weight of untwisted glass fiber filaments, impregnate 30 parts by weight of unsaturated polyester, and add 3 parts by weight of aramid pulp and 20 parts by weight of attapulgite filler to the impregnated unsaturated polyester. The impregnated untwisted glass fiber filaments are continuously extruded and pultruded, and then cut to obtain glass steel bars of required length. The tensile strength of the obtained glass reinforced steel can reach 400MPa, and the bending strength can reach 400MPa.

Embodiment 3

[0049] Embodiment 3 Preparation of thermoplastic glass reinforcement

[0050] Use 63 parts by weight of untwisted glass fiber filaments, impregnate 26 parts by weight of unsaturated polyester, in the impregnated unsaturated polyester, also add 2 parts by weight of aramid pulp, 13 parts by weight of calcium carbonate filler, 6 parts by weight 1 part of molten polypropylene resin, prepare the glass fiber impregnated with polypropylene resin by a process similar to Example 1, the glass fiber content is 60%, the tensile strength can reach 700MPa, and the flexural strength can reach 500MPa, under infrared or laser conditions Bundled into glass reinforcement, used to prepare glass reinforcement / steel hybrid reinforced concrete.

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Abstract

The invention discloses a modified glass steel bar applied for reinforcing concrete as well as a preparation method and an application of the modified glass steel bar. The modified glass steel bar isobtained by dipping continuous glass fibers in an unsaturated polyester resin solution, continuously extruding, drawing and molding the dipped continuous glass fibers, and cutting to obtain the product, wherein the unsaturated polyester resin solution comprises unsaturated polyester resin, aramid fibril fibers and inorganic fibers. According to the improved glass steel bar provided by the invention, the strength is greatly improved, the compatibility of the glass steel bar-steel bar and concrete is good, and the problem that the performance difference between a polymer material and concrete isrelatively large is solved, so that the strength of the concrete is reinforced, and the corrosion resistance and water seepage resistance of the concrete material are improved. Moreover, the preparation method is energy-saving and environment-friendly, can be used for preparing high-strength standard concrete materials, and is particularly suitable for building materials with high requirements onconcrete strength, such as load-bearing walls.

Description

technical field [0001] The invention relates to a building material, and relates to a modified glass reinforcement applied to reinforced concrete, a preparation method and its application, and in particular to a modified glass reinforcement used in a glass reinforcement-steel mixed reinforced concrete material for reinforcement. Background technique [0002] The load-bearing wall is the wall used to support the weight of the upper floor. It is the backbone of the building and an important part of determining indoor safety. With today's demand for floor heights, the strength requirements for the concrete that constitutes the load-bearing walls are bound to become higher and higher. [0003] There are three basic strength indicators of concrete: concrete cube compressive strength, concrete axial compressive strength (or prism strength) and concrete tensile strength. [0004] Concrete cube compressive strength: The strength of concrete cube specimens is relatively stable, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/18C04B111/20C04B111/27C04B111/40
CPCC04B26/18C04B2111/00293C04B2111/20C04B2111/27C04B2111/40C04B2201/50C04B14/42C04B16/0691C04B14/043C04B14/102C04B14/28
Inventor 池立群
Owner SHANGHAI HUDA INVESTMENT & DEV CO LTD
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