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A kind of waterproof ECC and carbon fiber cloth composite reinforcement material and its application method

A technology of reinforcing material and carbon fiber cloth, applied in bridge reinforcement, building maintenance, bridge maintenance and other directions, can solve the problems of high ECC cost, carbon fiber cloth failure, uneconomical, etc., to simplify construction procedures, prevent external water intrusion, and achieve durable performance. Good results

Active Publication Date: 2018-02-27
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem of the firmness of the pasted carbon fiber cloth has not been well solved. When the deflection of the bending member increases, the phenomenon of glue opening often occurs, resulting in the failure of the carbon fiber cloth.
However, the cost of ECC is very high, and it is uneconomical to directly use ECC as a reinforcement material for bending members.

Method used

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  • A kind of waterproof ECC and carbon fiber cloth composite reinforcement material and its application method
  • A kind of waterproof ECC and carbon fiber cloth composite reinforcement material and its application method
  • A kind of waterproof ECC and carbon fiber cloth composite reinforcement material and its application method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. The raw materials of ECC include cement, primary fly ash, silica sand, thickener, PVA fiber, water reducer, water, modified polymethyl hydrogen siloxane and other hydrophobic materials, as well as hydrophobic nano A class of hydrophobic nano-mineral materials such as calcium carbonate. The quality of cement is set as 1, the amount of primary fly ash is 1.0-1.5 times of the quality of cement, the amount of silica sand is 0.8-1.0 times of the quality of cement, the amount of thickener is 0.1%-0.15% of the quality of cement, and the water-cement ratio 0.3-0.45, the amount of water reducing agent is 0-0.5% of the cement amount, the volume of PVA fiber is 1.5%-2.5%, and the amount of a class of hydrophobic materials such as modified polymethylhydrogen siloxane is 2% of the cement quality 0.01%-0.1%, hydrophobic nano-calcium carbonate and other hydrophobic nano-mineral materials are added in an amount of 0.5%-1.5% of the cement mass.

[0036]2. ECC is mixed with a planeta...

Embodiment 2

[0040] 1. The raw materials of ECC include cement, primary fly ash, silica sand, thickener, PVA fiber, water reducer, water, modified polymethyl hydrogen siloxane and other hydrophobic materials, as well as hydrophobic nano A class of hydrophobic nano-mineral materials such as calcium carbonate. The quality of cement is set as 1, the amount of primary fly ash is 1.0 times of the quality of cement, the amount of silica sand is 0.8 times of the quality of cement, the amount of thickener is 0.1% of the quality of cement, the water-cement ratio is 0.3, and the amount of water reducer is The amount of cement is 0.1%, the volume of PVA fiber is 1.5%, the amount of a class of hydrophobic materials such as modified polymethylhydrogensiloxane is 0.01% of the cement mass, and a class of hydrophobic nano-calcium carbonate is The amount of mineral material is 0.5% of the cement mass.

[0041] 2. ECC is mixed with a planetary mortar mixer or a special ECC mixer. The feeding sequence and m...

Embodiment 3

[0045] 1. The raw materials of ECC include cement, primary fly ash, silica sand, thickener, PVA fiber, water reducer, water, modified polymethyl hydrogen siloxane and other hydrophobic materials, as well as hydrophobic nano A class of hydrophobic nano-mineral materials such as calcium carbonate. The quality of cement is set as 1, the amount of primary fly ash is 1.5 times of cement quality, the amount of silica sand is 1.0 times of cement quality, the amount of thickener is 0.15% of cement quality, the water-cement ratio is 0.45, and the amount of water reducing agent is The amount of cement is 0.5%, the volume of PVA fiber is 2.5%, the amount of a class of hydrophobic materials such as modified polymethylhydrogensiloxane is 0.1% of the cement mass, and a class of hydrophobic nanometers such as calcium carbonate is The amount of mineral material is 1.5% of the cement mass.

[0046] 2. ECC is mixed with a planetary mortar mixer or a special ECC mixer. The feeding sequence and ...

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Abstract

The invention provides a waterproof ECC and carbon fiber cloth composite reinforced material and a use method thereof. The reinforced material includes additive-added ECC and carbon fiber cloth. The ECC includes the raw materials: cement, first-grade fly ash, silica sand, a thickening agent, a water reducing agent, water, and a PVA fiber. An additive includes a hydrophobic material with the addition amount 0.01%-0.1% of the mass of the cement and a hydrophobic nano mineral material with the addition amount 0.5%-1.5% of the mass of the cement. According to the waterproof ECC and carbon fiber cloth composite reinforced material and the use method thereof, not only can glue opening and failure of the carbon fiber cloth be prevented, but also external water can be prevented from invading along cracks of beams, plates and other reinforced concrete flexural members, internal reinforcing steel bars are protected against corrosion. The procedures are simple, the operation is convenient, and the practicability is high.

Description

technical field [0001] The invention belongs to the field of civil engineering, and in particular relates to a waterproof ECC and carbon fiber cloth composite reinforcement material and a use method thereof. Background technique [0002] In the field of civil engineering, reinforced concrete flexural members such as beams and slabs of buildings (especially houses, bridges, etc.) show insufficient bearing capacity due to structural aging or increased upper loads, and even the curved concrete cracks. Considering the economic point of view and the difficulty of construction, in general, the bending members will not be directly replaced in engineering, but certain reinforcement measures will be taken. At present, the method of enlarging the section, pasting the steel plate or pasting the carbon fiber cloth is often used in engineering. Among them, the method of sticking carbon fiber cloth has high engineering practical value due to the advantages of fast construction speed, no ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00E04G23/02E01D22/00
CPCC04B28/00E01D22/00E04G23/0218C04B18/08C04B14/06C04B2103/44C04B2103/302C04B16/0641C04B24/42C04B14/28C04B14/386Y02A30/30
Inventor 葛智周健韩少龙管延华孙仁娟李晨高莹
Owner SHANDONG UNIV
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