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High-toughness high-cohesiveness C70 strength fiber concrete and preparation method thereof

A fiber-reinforced concrete, high-adhesion technology, applied in the field of building materials, can solve the problem of inability to achieve toughening effect, and achieve the effects of improving friction and mechanical bite force, enhancing adhesion and increasing strength

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 C70 strength fiber concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] 1) Add 8 parts by mass of water reducer to two-thirds of the total water, which is recorded as mixed solution 1; add 7.5 parts of shrinkage reducer and 1.9 parts of defoamer to the total water of three One-third of the water is recorded as mixed solution 2, and the total amount of water is 160 parts;

[0081] 2) Mix 4.8 parts of ramie fiber, 1010 parts of gravel, 723 parts of river sand, 360 parts of cement, 110 parts of fly ash, 50 parts of straw ash, 16 parts of silica fume, 3 parts of nano silicon, 8.1 parts of basalt fiber, 17.4 parts CaCO 3 Whiskers were divided into three parts according to the mass fraction, and then a part of ramie fiber, basalt fiber, CaCO 3 Sprinkle the whiskers evenly in the disc mixer, then place a portion of crushed stone, river sand, cement, fly ash, straw ash, silica fume, and nano-silicon in the disc mixer in order, and stir for 1 min;

[0082] 3) In the same way, add the other two ingredients into the pan mixer and stir evenly;

[00...

Embodiment 2

[0089] 1) Add 8.5 parts by mass of water reducing agent to two-thirds of the total water volume, which is recorded as mixed solution 1; add 7.8 parts of shrinkage reducer and 2.1 parts of defoamer to the total water volume of three One-third of the water is recorded as mixed solution 2, and the total amount of water is 155 parts;

[0090] 2) 4.9 parts of ramie fiber, 1010 parts of gravel, 723 parts of river sand, 360 parts of cement, 109 parts of fly ash, 55 parts of straw ash, 17 parts of silica fume, 2 parts of nano silicon, 8.1 parts of basalt fiber, 17.5 parts CaCO 3 Whiskers were divided into three parts according to the mass fraction, and then a part of ramie fiber, basalt fiber, CaCO 3 Sprinkle the whiskers evenly in the disc mixer, then place a portion of crushed stone, river sand, cement, fly ash, straw ash, silica fume, and nano-silicon in the disc mixer in order, and stir for 1 min;

[0091] 3) In the same way, add the other two ingredients into the pan mixer and ...

Embodiment 3

[0098] 1) Add 8 parts by mass of water reducer to two-thirds of the total water, which is recorded as mixed solution 1; add 7.5 parts of shrinkage reducer and 1.9 parts of defoamer to the total water of three One-third of the water is recorded as mixed solution 2, and the total amount of water is 160 parts;

[0099] 2) 4.7 parts of ramie fiber, 1010 parts of gravel, 723 parts of river sand, 360 parts of cement, 112 parts of fly ash, 45 parts of straw ash, 15 parts of silica fume, 2 parts of nano silicon, 7.9 parts of basalt fiber, 17.4 parts CaCO 3Whiskers were divided into three parts according to the mass fraction, and then a part of ramie fiber, basalt fiber, CaCO 3 Sprinkle the whiskers evenly in the disc mixer, then place a portion of crushed stone, river sand, cement, fly ash, straw ash, silica fume, and nano-silicon in the disc mixer in order, and stir for 1 min;

[0100] 3) In the same way, add the other two ingredients into the pan mixer and stir evenly;

[0101] 4...

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Abstract

The invention discloses high-toughness and high-cohesiveness C70 strength fiber concrete and a preparation method thereof. The concrete is prepared from cement, river sand, broken stone, 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 and CaCO3 whisker according to the mixing ratios of (350 to 360): (723): (1010): (105 to 112): (45 to 55): (14 to 17): (2 to 3.5): (155 to 160): (7.5 to 8.5): (12 to 13): (1.8 to 2.1): (6.8 to 7.8): (4.7 to 4.9): (7.9 to 8.1): (17.3 to 17.5). Through a layered stirring method, all the materials are uniformly mixed at intervals, and discharging, forming and curing are performed. The compression resistance, the fracture resistance, the splitting tensile strength, the toughness, the durability and the like of the concrete can be effectively improved, and the bonding strength and the cooperative deformation capacity between the concrete and profile steel are enhanced.

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, straw ash, fly ash, silica fume and nano-silicon concrete with high toughness, high cohesion, high durability and high volume stability, specifically related to a high toughness and high cohesion C70 strength Fiber concrete and its preparation method. 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 have different modulus of elasticity and different deformation properties. Therefore, if the strength index is too large or too sma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04B28B11/24B28C5/40
CPCC04B28/04B28C5/402B28C5/404B28B11/245C04B2201/50C04B14/06C04B14/02C04B18/08C04B18/101C04B18/146C04B14/04C04B2103/302C04B2103/50C04B18/248C04B14/4643C04B14/383C04B22/143C04B22/124C04B24/122
Inventor 贺金川郑山锁阮升周炎尚志刚董立国明铭刘晓航董晋琦张晓辉郑捷刘华段培亮李磊
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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