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High-toughness high-cohesiveness C220 ultrahigh-strength hybrid fiber concrete and preparation method thereof

A high-cohesion, hybrid fiber technology, used in climate sustainability, sustainable waste treatment, solid waste management, etc. The effect of reuse

Pending Publication Date: 2021-07-30
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 high-cohesiveness C220 ultrahigh-strength hybrid fiber concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] 1) Add 18.5 parts by mass of water reducer and 39 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 2.6 parts of antifoaming agent are added to one-third of the total water, which is recorded as mixed solution 2; 21 parts of carboxy-modified polyvinyl alcohol polymers are prepared for later use; the total water is 85 parts; Among them, the nano-titanium / graphene oxide dispersion is composed of 1.6 parts of graphene oxide powder and 0.2 parts 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%;

[0104] 2) Mix 6.9 parts of ramie fiber, 885 parts of gravel, 740 parts of sand, 537 parts of cement, 75 parts of fly ash, 90 parts of straw ash, 105 parts of silica fume, 4.9 parts of nano silicon, 12.5 parts of ...

Embodiment 2

[0113] 1) Add 18 parts by mass of water-reducing agent and 38 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 3 parts of antifoaming agent are added to the water of one-third of the total water volume, which is recorded as mixed solution 2; 21.5 parts of carboxyl-modified polyvinyl alcohol polymers are prepared for later use; the total water volume is 85 parts; Among them, the nano-titanium / graphene oxide dispersion is composed of 1.1 parts of graphene oxide powder and 0.3 parts 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%;

[0114] 2) 7 parts of ramie fiber, 880 parts of gravel, 740 parts of sand, 535 parts of cement, 72.5 parts of fly ash, 95 parts of straw ash, 100 parts of silica fume, 4.9 parts ...

Embodiment 3

[0122] 1) Add 18.5 parts by mass of water-reducing agent and 37 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 2.6 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 85 parts; Among them, the nano-titanium / graphene oxide dispersion is composed of 1.6 parts of graphene oxide powder and 0.3 parts of nano-TiO 2 Made; carboxy-modified polyvinyl alcohol polymer is prepared from raw materials according to mass percentage: carboxy-modified polyvinyl alcohol 38.7%, water 60.1%, polyacrylate defoamer 1.2%;

[0123] 2) Mix 6.8 parts of ramie fiber, 880 parts of gravel, 738 parts of sand, 537 parts of cement, 72 parts of fly ash, 95 parts of straw ash, 103 parts of silica fume...

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Abstract

The invention discloses high-toughness and high-cohesiveness C220 ultrahigh-strength hybrid fiber concrete and a preparation method thereof. The high-toughness and high-cohesiveness C220 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 fiber, basalt fiber, CaCO3 whisker, carboxyl modified polyvinyl alcohol polymer and nano titanium / graphene oxide dispersion liquid according to the mixing ratios of (535-540): (735-740): (880-890): (70-75): (90-100): (100-105): (4.8-5): (85-90): (17.5-18.5): (15-15.5): (2.6-3): (12-13): (6.7-7): (12.5-12.7): (19.2-19.5): (21-22): (36-39); and the materials are uniformly mixed by a layered stirring method, and preparation and curing are performed. The mechanical property and durability of the concrete and the bonding property between the concrete and 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 C220 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): C04B28/04C04B40/00C04B20/02C04B24/12C04B24/26C04B24/32C04B18/10C04B22/14C04B22/12C04B14/02C04B14/30C04B18/24C04B111/20C04B111/22C04B111/27C04B111/34
CPCC04B28/04C04B20/023C04B40/0039C04B40/0046C04B40/0028C04B2201/50C04B2201/52C04B2111/22C04B2111/2015C04B2111/20C04B2111/343C04B2111/27C04B2111/29C04B14/06C04B14/14C04B18/08C04B18/101C04B18/146C04B14/066C04B20/008C04B2103/302C04B2103/50C04B2103/0068C04B18/248C04B14/4656C04B14/383C04B14/024C04B14/305C04B24/32C04B24/2623C04B24/2641C04B22/143C04B22/124C04B24/122Y02W30/91
Inventor 郑捷郑山锁阮升段培亮刘晓航温桂峰贺金川杨建军张晓辉董晋琦尚志刚周炎董立国
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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