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High-toughness and high-cohesiveness C80-strength fiber concrete and preparation method thereof

A fiber-reinforced concrete and high-bonding technology, which is applied in the field of building materials, can solve problems such as inability to achieve toughening effects, and achieve the effects of improving friction and mechanical occlusal force, enhancing cohesion, and increasing strength

Pending 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 C80-strength fiber concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] 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 8.2 parts of shrinkage reducer and 2 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 153 parts;

[0081] 2) Mix 5 parts of ramie fiber, 1007 parts of gravel, 725 parts of river sand, 370 parts of cement, 100 parts of fly ash, 55 parts of straw ash, 18 parts of silica fume, 3.5 parts of nano silicon, 8.2 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 an...

Embodiment 2

[0089] 1) Add 9.5 parts by mass of water reducing agent to two-thirds of the total water volume, which is recorded as mixed solution 1; add 8.2 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 150 parts;

[0090] 2) 5.2 parts of ramie fiber, 1007 parts of gravel, 725 parts of river sand, 370 parts of cement, 105 parts of fly ash, 65 parts of straw ash, 19 parts of silica fume, 2.5 parts of nano silicon, 8.3 parts of basalt fiber, 17.6 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 an...

Embodiment 3

[0098] 1) Add 9 parts by mass of water reducer to 2 / 3 of the total water volume, which is recorded as mixed solution 1; add 8 parts of shrinkage reducer and 1.9 parts of defoamer to the total water volume of 3 One-third of the water is recorded as mixed solution 2, and the total amount of water is 155 parts;

[0099] 2) 4.9 parts of ramie fiber, 1007 parts of gravel, 725 parts of river sand, 370 parts of cement, 110 parts of fly ash, 55 parts of straw ash, 17.5 parts of silica fume, 2.5 parts of nano silicon, 8.1 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;

[01...

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Abstract

The invention discloses high-toughness and high-cohesiveness C80-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 fibers, basalt fibers and CaCO3 crystal whiskers according to the mixing ratio of (360-370): 725: 1007: (100-110): (55-65): (17-19): (2.5-4): (150-155): (8.5-9.5): (12.5-13.5): (1.8-2.1): (7.8-8.2): (4.9-5.2): (8.1-8.3): (17.4-17.6). 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 the 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, high-cohesion C80 strength concrete 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 strengths of the components when they are 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 la...

Claims

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Application Information

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IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B2201/52C04B14/02C04B14/06C04B14/4643C04B14/383C04B18/08C04B18/101C04B18/146C04B18/248C04B22/02C04B22/143C04B22/124C04B24/122C04B2103/0068C04B2103/302C04B2103/50
Inventor 郑山锁董立国阮升张艺欣杨路张晓宇杨松王斌李磊郑跃明铭郑捷姬金铭郑淏
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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