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High-toughness and high-cohesiveness C210 ultrahigh-strength hybrid fiber concrete and preparation method thereof

A high-cohesion, hybrid fiber technology, used in clay preparation devices, chemical instruments and methods, climate sustainability, etc., can solve problems such as inability to achieve toughening effects, reduce construction costs, achieve reuse, and improve resistance. The effect of folding strength

Active Publication Date: 2021-06-25
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the presence of cracks of different sizes in concrete, adding a single fiber often cannot achieve the best toughening effect

Method used

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  • High-toughness and high-cohesiveness C210 ultrahigh-strength hybrid fiber concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] 1) Add 17 parts by mass of water reducer and 33 parts by mass of nano-titanium / graphene oxide dispersion into two-thirds of the total water, which is recorded as mixed solution 1; 12 parts of shrinkage reducing agent and 2.5 parts of antifoaming agent are added to one-third of the total water, which is recorded as mixed solution 2; 22 parts of carboxy-modified polyvinyl alcohol polymers are prepared for later use; the total water is 95 parts; Among them, the nano-titanium / graphene oxide dispersion consists of 1 part of graphene oxide powder and 0.1 part of nano-TiO 2 Made; carboxy-modified polyvinyl alcohol polymer is prepared from raw materials according to mass percentage: carboxy-modified polyvinyl alcohol 37.5%, water 61%, polyacrylate defoamer 1.5%;

[0103] 2) Mix 6.5 parts of ramie fiber, 895 parts of gravel, 735 parts of sand, 535 parts of cement, 75 parts of fly ash, 85 parts of straw ash, 98 parts of silica fume, 5 parts of nano silicon, 12.3 parts of basalt f...

Embodiment 2

[0112] 1) Add 17.5 parts by mass of water reducer and 35 parts by mass of nano-titanium / graphene oxide dispersion into two-thirds of the total water, which is recorded as mixed solution 1; 12.5 parts of shrinkage reducing agent and 2.9 parts of antifoaming agent are added to the water of one-third of the total water volume, which is recorded as mixed solution 2; 21 parts of carboxyl-modified polyvinyl alcohol polymers are prepared for later use; the total water volume is 90 parts; Among them, the nano-titanium / graphene oxide dispersion consists of 1 part of graphene oxide powder and 0.2 part of nano-TiO 2 Made; carboxy-modified polyvinyl alcohol polymer is prepared from raw materials according to mass percentage: carboxy-modified polyvinyl alcohol 39%, water 60%, polyacrylate defoamer 1%;

[0113] 2) 6.7 parts of ramie fiber, 890 parts of gravel, 740 parts of sand, 525 parts of cement, 75 parts of fly ash, 90 parts of straw ash, 95 parts of silica fume, 4.8 parts of nano silic...

Embodiment 3

[0121] 1) Add 18 parts by mass of water-reducing agent and 36 parts by mass of nano-titanium / graphene oxide dispersion into two-thirds of the total water, which is recorded as mixed solution 1; 13 parts of shrinkage reducing agent and 2.5 parts of antifoaming agent are added to the water of one-third of the total water volume, which is recorded as mixed solution 2; 20.5 parts of carboxy-modified polyvinyl alcohol polymers are prepared for later use; the total water volume is 90 parts; Among them, the nano-titanium / graphene oxide dispersion is composed of 1.5 parts of graphene oxide powder and 0.1 part of nano-TiO 2 Made; carboxy-modified polyvinyl alcohol polymer is prepared from raw materials according to mass percentage: carboxy-modified polyvinyl alcohol 37%, water 62%, polyacrylate defoamer 1%;

[0122] 2) Mix 6.6 parts of ramie fiber, 895 parts of gravel, 740 parts of sand, 530 parts of cement, 80 parts of fly ash, 85 parts of straw ash, 100 parts of silica fume, 4.9 part...

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Abstract

The invention discloses high-toughness and high-cohesiveness C210 ultrahigh-strength hybrid fiber concrete and a preparation method thereof. The ultrahigh-strength hybrid fiber concrete is prepared from cement, sand, gravel, fly ash, straw ash, silica fume, nano silicon, water, a water reducing agent, an exciting agent, a defoaming agent, a shrinkage reducing agent, ramie fibers, basalt fibers, CaCO3 whiskers, a carboxyl modified polyvinyl alcohol polymer andnanometer titanium / graphene oxide dispersion liquid according to the mixing ratio of (525-535):(735-740):(890-900): (70-80): (85-95:(95-100):(4.7-5):(90-95):(17-18):(14.5-15):(2.5-2.9) :(12-13):(6.5-6.7):(12.2-12.5):(19-19.3):(20.5-22):(33-36). The materials are uniformly mixed by a layered stirring method, and are prepared and maintained. The mechanical property of the concrete and the bonding property and durability between the concrete and the profile steel are obviously improved.

Description

technical field [0001] The invention belongs to the field of building materials, and is a kind of ramie fiber, basalt fiber, CaCO 3 Whiskers, carboxyl-modified polyvinyl alcohol polymers, nano-titanium / graphene oxide dispersions, straw ash, fly ash, silica fume and nano-silicon have high toughness, high adhesion, high durability, and high volume The invention relates to stable concrete, in particular to a high-toughness and high-cohesion C210 ultra-high-strength hybrid fiber concrete and a preparation method thereof. Background technique [0002] In structural design, considering the requirements of use function, component stiffness and convenient construction, it is usually necessary to use different grades of concrete for different stress situations to meet the required compressive, flexural and splitting tensile strength of the component when it is loaded. And to ensure the bond strength of concrete and steel working together. Concrete materials with different grades ha...

Claims

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Application Information

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IPC IPC(8): C04B22/06C04B28/04C04B24/12C04B22/14C04B22/12C04B18/24C04B18/14C04B18/10C04B18/08C04B14/46C04B14/38C04B14/06B28C5/40
CPCC04B28/04C04B18/248C04B14/4643C04B14/383C04B22/06C04B18/08C04B18/101C04B18/146C04B14/062C04B22/143C04B22/124C04B24/122B28C5/402C04B2201/50C04B14/06C04B14/02C04B14/04C04B2103/302C04B2103/50C04B24/2623Y02W30/91
Inventor 郑山锁阮升曹琛杨建军姬金铭郑捷杨路刘晓航李磊刘华明铭董立国周炎尚志刚
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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