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Fiber reinforce plastic (FRP) rib fiber high-strength light-weight aggregate concrete beam member and manufacturing method

A lightweight aggregate concrete and manufacturing method technology, applied to building components, bridge parts, bridges, etc., can solve problems such as corrosion of steel bars, poor durability, and reduce structural self-weight, so as to improve seismic performance, reduce structural self-weight, and reduce component deflection and crack width effect

Inactive Publication Date: 2019-07-12
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies, and provide a FRP reinforced fiber high-strength lightweight aggregate concrete beam member and its manufacturing method, which can significantly reduce the structural weight and solve the problems of steel corrosion and poor durability

Method used

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  • Fiber reinforce plastic (FRP) rib fiber high-strength light-weight aggregate concrete beam member and manufacturing method
  • Fiber reinforce plastic (FRP) rib fiber high-strength light-weight aggregate concrete beam member and manufacturing method
  • Fiber reinforce plastic (FRP) rib fiber high-strength light-weight aggregate concrete beam member and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The manufacturing method of FRP reinforced fiber high-strength lightweight aggregate concrete beam member comprises the following steps:

[0035] Step 1, according to the construction drawing, bind the reinforcement cage formed by the CFRP reinforcement, the longitudinal erection reinforcement 3 and the stirrup 4; Water agent, 370 parts of cement, 70 parts of silica fume and 670 parts of fine aggregate;

[0036] Step 2, wetting the gravel-type ceramsite 6 with additional water evenly, adding a water reducing agent into the water and stirring evenly to obtain a mixture A;

[0037] Step 3, after mixing the wetted gravel-type ceramsite 6 with cement, silicon powder and fine aggregate, add steel fiber, so that the volume content of steel fiber in fiber lightweight aggregate concrete 1 per cubic meter is 0.4% , uniformly mixed to obtain mixture B;

[0038] Step 4, add the mixture A to the mixture B in two times, stir well and complete the production of the fiber lightweigh...

Embodiment 2

[0042] The manufacturing method of FRP reinforced fiber high-strength lightweight aggregate concrete beam member comprises the following steps:

[0043] Step 1, according to the construction drawing, bind the reinforcement cage composed of BFRP reinforcement, vertical erection reinforcement 3 and stirrup 4; and weigh 650 parts of gravel-type ceramsite 6, 180 parts of water, and 5 parts of Water reducing agent, 430 parts of cement, 30 parts of fly ash and 730 parts of fine aggregate;

[0044] Step 2, wetting the gravel-type ceramsite 6 with additional water evenly, adding a water reducing agent into the water and stirring evenly to obtain a mixture A;

[0045] Step 3: After mixing the wetted gravel-type ceramsite 6 with cement, fly ash and fine aggregate, add the mixed fiber of plastic steel fiber and polypropylene fiber, so that every cubic meter of fiber lightweight aggregate concrete 1 is mixed The volume dosage of the fiber is 0.8%, uniformly mixed to obtain the mixture B;...

Embodiment 3

[0050] The manufacturing method of FRP reinforced fiber high-strength lightweight aggregate concrete beam member comprises the following steps:

[0051] Step 1, according to the construction drawing, bind the reinforcement cage composed of AFRP reinforcement, longitudinal erection reinforcement 3 and stirrup 4; and weigh 620 parts of gravel-type ceramsite 6, 150 parts of water, 4 parts Water reducing agent, 400 parts of cement, 100 parts of auxiliary cementitious material and 700 parts of fine aggregate;

[0052] Step 2, wetting the gravel-type ceramsite with additional water evenly, adding a water reducing agent into the water and stirring evenly to obtain a mixture A;

[0053] Step 3, mix the wetted crushed stone type ceramsite 6 with cement, auxiliary cementitious material and fine aggregate, and add the mixed fiber of polyacrylonitrile fiber and lignin fiber to make the fiber lightweight aggregate concrete 1 The volume dosage of the mixed fibers in the medium is 0.6%, and...

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Abstract

The invention discloses a fiber reinforce plastic (FRP) rib fiber high-strength light-weight aggregate concrete beam member and a manufacturing method. Fiber is doped in fiber light-weight aggregate concrete, the flexural performance of a FRP rib fiber high-strength light-weight aggregate concrete beam can be effectively improved, the ultimate bearing force of the member can be improved, the flexural rigidity of the member is increased, so that the deflection of the beam is reduced, and the beam fundamentally meets the normal using state requirements; the crack width under the load effect further can be reduced; and compared with a steel bar light-weight aggregate concrete sample, after the fiber is doped, the ductility is greatly improved. According to a rib cage formed by a FRP rib, a longitudinal erection steel bar and a stirrup, a longitudinal tension rib is the FRP rib, and the corrosion resistance of the FRP rib can obviously improve the durability of the member during crack developing.

Description

technical field [0001] The invention belongs to the engineering fields of buildings, bridges, etc., and in particular relates to an FRP reinforced fiber high-strength lightweight aggregate concrete beam member and a manufacturing method. Background technique [0002] At present, in the fields of bridge structures and marine engineering, the joint action of loads and erosive media causes frequent corrosion of reinforced concrete components, which causes structural performance degradation and seriously affects its service life, which is not conducive to the sustainable development of structures. [0003] High-strength lightweight aggregate has the characteristics of light weight, high strength, excellent durability, and good thermal insulation. For structures with a high proportion of dead load such as long-span bridges, the use of lightweight aggregate concrete has a significant effect on reducing the internal force of the structure, which can effectively reduce The size of t...

Claims

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Application Information

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IPC IPC(8): E04C3/20E01D19/00E04B1/64E04B1/98E04H9/02C04B28/04
CPCC04B28/04E01D19/00E04B1/642E04C3/20E04H9/021C04B2103/302C04B18/027C04B2103/445C04B14/06
Inventor 吴涛刘喜魏慧王立勋孙艺嘉刘洋陈顺
Owner CHANGAN UNIV
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