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High-toughness and high-cohesiveness C140-strength high-strength fiber concrete and preparation method thereof

A high-cohesion, high-strength fiber technology, used in clay preparation devices, chemical instruments and methods, climate sustainability, etc., can solve problems such as inability to achieve toughening effects, and achieve cost reduction, low cost, and reuse. Effect

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 C140-strength high-strength fiber concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] 1) Add 13 parts by mass of water reducing agent to two-thirds of the total water volume, which is recorded as mixed solution 1; add 10 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 23 parts of carboxyl-modified polyvinyl alcohol polymers are prepared for later use, with a total water content of 115 parts; wherein, carboxyl-modified polyvinyl alcohol polymers are prepared according to the mass percentage of raw materials Formation: carboxy-modified polyvinyl alcohol 38.6%, water 60.4%, polyacrylate defoamer 1%;

[0092] 2) 5.5 parts of ramie fiber, 980 parts of gravel, 720 parts of sand, 430 parts of cement, 80 parts of fly ash, 70 parts of straw ash, 35 parts of silica fume, 3.7 parts of nano silicon, 9.3 parts of basalt fiber, 17.9 parts of CaCO 3 Whiskers were divided into three parts, and then a part of ramie fiber, basalt fiber, CaCO 3 Sprinkle the whiskers evenly in...

Embodiment 2

[0101] 1) Add 14 parts by mass of water reducer to two-thirds of the total water, which is recorded as mixed solution 1; add 11 parts of shrinkage reducer and 2.4 parts of defoamer to the total water of three One-third of the water is recorded as mixed solution 2, and 23 parts of carboxyl-modified polyvinyl alcohol polymers are prepared for later use, with a total water content of 120 parts; wherein, carboxyl-modified polyvinyl alcohol polymers are prepared according to the mass percentage of raw materials Made: carboxy-modified polyvinyl alcohol 36%, water 63%, polyacrylate defoamer 1%;

[0102] 2) 5.7 parts of ramie fiber, 980 parts of gravel, 720 parts of sand, 435 parts of cement, 85 parts of fly ash, 65 parts of straw ash, 40 parts of silica fume, 3.9 parts of nano silicon, 9.6 parts of basalt fiber, 18.2 parts of CaCO 3 Whiskers were divided into three parts, and then a part of ramie fiber, basalt fiber, CaCO 3 Sprinkle the whiskers evenly in the disc mixer, then place ...

Embodiment 3

[0110] 1) Add 13.5 parts by mass of water reducer to two-thirds of the total water, which is recorded as mixed solution 1; add 11 parts of shrinkage reducer and 2.1 parts of defoamer to the total water of three One-third of the water is recorded as mixed solution 2, and 21 parts of carboxyl-modified polyvinyl alcohol polymers are prepared for later use, with a total water content of 115 parts; wherein, carboxyl-modified polyvinyl alcohol polymers are prepared according to the mass percentage of raw materials Made: carboxy-modified polyvinyl alcohol 37%, water 62%, polyacrylate defoamer 1%;

[0111] 2) 5.5 parts of ramie fiber, 980 parts of gravel, 720 parts of sand, 438 parts of cement, 80 parts of fly ash, 68 parts of straw ash, 40 parts of silica fume, 4.1 parts of nano silicon, 9.4 parts of basalt fiber, 18 parts of CaCO 3 Whiskers were divided into three parts, and then a part of ramie fiber, basalt fiber, CaCO 3 Sprinkle the whiskers evenly in the disc mixer, then place ...

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Abstract

The invention discloses high-toughness and high-cohesiveness C140-strength high-strength fiber concrete and a preparation method thereof. The high-strength 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, a CaCO3 whisker and a carboxyl modified polyvinyl alcohol polymer according to the mixing ratio of (430-435): 720: 980: (80-85): (65-70): (35-40): (3.7-4.3): (115-120): (13-14): (13.5-14): (2-2.4): (10-11): (5.5-5.7): (9.3-9.6): (17.9-18.2): (21-23). The materials are evenly mixed at intervals through a layered stirring method, and discharging, forming and curing are conducted. The mechanical property of the concrete and the adhesive property and anti-permeability between the concrete and the profile steel are remarkably enhanced, and the cooperative work capacity of the concrete and the profile steel is further 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, 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-strength fiber concrete with high toughness and high cohesiveness C140 strength 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 have different modulus of elasticity and different de...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B20/02C04B40/02C04B18/24C04B14/46C04B14/38C04B24/26C04B18/10C04B18/08C04B18/14C04B14/06C04B22/12C04B24/12B28C5/00
CPCC04B28/141C04B20/023C04B40/0254C04B18/248C04B14/4643C04B14/383C04B24/2623C04B18/101C04B18/08C04B18/146C04B14/06C04B22/124C04B24/122B28C5/003C04B2111/00008C04B2201/50C04B7/02C04B14/068C04B18/12C04B22/002C04B2103/302C04B2103/50C04B2103/0068C04B24/2641Y02W30/91
Inventor 郑山锁郑跃阮升龙立郑捷杨路董立国刘晓航王斌尚志刚董晋琦李磊郑淏
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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