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High-toughness and high-cohesiveness C230 ultrahigh-strength hybrid fiber concrete and preparation method thereof

A technology of high cohesiveness and hybrid fibers, which is applied in clay preparation devices, chemical instruments and methods, and manufacturing tools, etc., can solve problems such as inability to achieve toughening effects, reduce construction costs, improve flexural strength, and increase bonding. sexual effect

Active Publication Date: 2021-08-10
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 C230 ultrahigh-strength hybrid fiber concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] 1) Add 18 parts by mass of water-reducing agent 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; 13.5 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; 21.5 parts of carboxyl-modified polyvinyl alcohol polymers are prepared for later use; the total water volume is 82 parts; Among them, the nano-titanium / graphene oxide dispersion is composed of 1.4 parts of graphene oxide powder and 0.3 parts of nano-TiO 2 Made; carboxy-modified polyvinyl alcohol polymer is prepared according to the mass percentage of raw materials: carboxy-modified polyvinyl alcohol 37.5%, water 61.5%, polyacrylate defoamer 1%;

[0104] 2) Mix 7.1 parts of ramie fiber, 880 parts of gravel, 743 parts of sand, 540 parts of cement, 75 parts of fly ash, 100 parts of straw ash, 110 parts of silica fum...

Embodiment 2

[0113] 1) Add 18.5 parts by mass of water-reducing agent and 40 parts by mass of nano-titanium / graphene oxide dispersion into two-thirds of the total water, which is recorded as mixed solution 1; 13.5 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 carboxy-modified polyvinyl alcohol polymers are prepared for later use; the total water volume is 78 parts; Among them, the nano-titanium / graphene oxide dispersion is composed of 1.2 parts of graphene oxide powder and 0.4 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) Mix 7.2 parts of ramie fiber, 870 parts of gravel, 745 parts of sand, 540 parts of cement, 72.5 parts of fly ash, 97 parts of straw ash, 110 parts of silica fume, 5.1...

Embodiment 3

[0122] 1) Add 19 parts by mass of water-reducing agent and 42 parts by mass of nano-titanium / graphene oxide dispersion into two-thirds of the total water, which is recorded as mixed solution 1; 14 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 80 parts; Among them, the nano-titanium / graphene oxide dispersion is composed of 1.7 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 37%, water 62%, polyacrylate defoamer 1%;

[0123] 2) 7.1 parts of ramie fiber, 875 parts of gravel, 745 parts of sand, 542 parts of cement, 75 parts of fly ash, 95 parts of straw ash, 115 parts of silica fume, 5.1 parts of nano silicon, 12.7 parts of...

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Abstract

The invention discloses high-toughness and high-cohesiveness C230 ultrahigh-strength hybrid fiber concrete and a preparation method thereof. The high-toughness and high-cohesiveness C230 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 and nano titanium / graphene oxide dispersion liquid according to the mixing ratio of (540-545): (740-745): (870-880): (70-75): (95-100): (110-115): (5-5.2): (78-82): (18-19): (15.5-16): (2.6-3): (13-14): (7-7.2): (12.7-13): (19.5-19.7): (21-22): (39-42). The preparation method comprises the steps of uniformly mixing the materials by a layered stirring method, discharging, forming and curing. The concrete mechanics including the bonding performance and the durability between the profile steels 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 C230 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): C04B28/18B28B1/087B28B11/24B28C5/00
CPCB28B1/087B28B11/245B28C5/003C04B28/18C04B7/02C04B2103/302C04B14/305C04B14/024C04B22/002C04B2103/0068C04B2103/50C04B24/2623C04B18/248C04B14/02C04B14/06C04B18/08C04B18/101C04B18/146C04B14/062C04B14/4643C04B14/383C04B22/143C04B22/124C04B24/122Y02W30/91
Inventor 郑山锁阮升刘华董立国姬金铭杨松张晓辉郑捷杨路李磊温桂峰张艺欣李亚辉董晋琦
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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