A kind of high-performance fiber concrete of C50 intensity level and preparation method thereof

A high-performance fiber, strength-grade technology, applied in climate sustainability, sustainable waste treatment, solid waste management, etc., can solve problems such as poor durability, high brittleness, easy cracking, etc. performance, improve crack resistance

Active Publication Date: 2019-11-05
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a kind of high-performance fiber concrete of C50 intensity grade and preparation method thereof, utilize the material easily available in the market, adopt the improved concrete mixing process, by adding cellulose fiber, rice husk ash, active mineral admixture, Chemical admixtures, etc., to overcome the shortcomings of ordinary concrete such as high brittleness, easy cracking, and poor durability, to prepare high-performance fiber concrete with high volume stability, high durability, and high toughness C50 strength level

Method used

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  • A kind of high-performance fiber concrete of C50 intensity level and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] In the high-performance fiber concrete of C50 strength grade in this embodiment, the mixing ratio of each component in the high-performance fiber concrete is as follows: 330 parts of cement, 160 parts of tap water, 710 parts of river sand, 1030 parts of crushed stone, 130 parts of fly ash, 20 parts of rice husk ash, 5 parts of water reducer, 8 parts of shrinkage reducer, 14 parts of activator, 1.1 parts of cellulose fiber, 15 parts of carboxypropyl benzene polymer, and 1.7 parts of defoamer.

[0066] in:

[0067] Raw materials in terms of mass percent of the composite activator: 68% of sodium sulfate, 30% of calcium chloride, and 2% of triethanolamine.

[0068] The raw material of carboxylated styrene-butadiene polymer in mass percent is as follows:

[0069] Carboxylated styrene-butadiene emulsion 50%, water 48%, additives 2%.

[0070] The above-mentioned components are prepared concrete according to the following method:

[0071] 1) Add water reducer to 25% aqueous ...

Embodiment 2

[0079]In the high-performance fiber concrete of C50 strength grade in this embodiment, the mix ratio of each component in the high-performance fiber concrete is as follows: 350 parts of cement, 175 parts of tap water, 730 parts of river sand, 1010 parts of crushed stone, pulverized coal 90 parts of ash, 50 parts of rice husk ash, 7 parts of water reducing agent, 9 parts of shrinkage reducing agent, 12 parts of activator, 1.7 parts of cellulose fiber, 12 parts of carboxypropyl benzene polymer, and 1.8 parts of defoamer.

[0080] in:

[0081] Raw materials in terms of mass percent of the compound activator: 60% of sodium sulfate, 38% of calcium chloride, and 2% of triethanolamine.

[0082] The raw material of carboxylated styrene-butadiene polymer in mass percent is as follows:

[0083] Carboxylated styrene-butadiene emulsion 48%, water 50%, additives 2%.

[0084] The above-mentioned components are prepared concrete according to the following method:

[0085] 1) Add water red...

Embodiment 3

[0093] In the high-performance fiber concrete of C50 strength grade in this embodiment, the mixing ratio of each component in the high-performance fiber concrete is as follows: 342 parts of cement, 166 parts of tap water, 714 parts of river sand, 1027 parts of crushed stone, 92 parts of fly ash, 46 parts of rice hull ash, 5.7 parts of water reducing agent, 9.2 parts of shrinkage reducing agent, 13 parts of activator, 1.5 parts of cellulose fiber, 14 parts of carboxylated styrene-butadiene polymer, and 1.8 parts of defoamer.

[0094] in:

[0095] Raw materials in terms of mass percent of the composite activator: 65.5% of sodium sulfate, 33% of calcium chloride, and 1.5% of triethanolamine.

[0096] The raw material of carboxylated styrene-butadiene polymer in mass percent is as follows:

[0097] Carboxylated styrene-butadiene emulsion 49%, water 50%, additive 1%.

[0098] The above-mentioned components are prepared concrete according to the following method:

[0099] 1) Add ...

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Abstract

The invention discloses a high-performance fiber concrete of C50 strength grade and a preparation method thereof. The mass parts of the concrete are as follows: 330-350 parts of cement, 160-175 parts of water, 710-730 parts of river sand, and 1010 parts of gravel ‑1030 parts, 90‑130 parts of fly ash, 20‑50 parts of rice husk ash, 5‑7 parts of water reducing agent, 8‑9 parts of shrinkage reducing agent, 12‑14 parts of activator, 1.1‑1.7 parts of cellulose fiber, 12-15 parts of carboxylated styrene-butadiene polymer, 1.7-1.8 parts of defoamer. The prepared concrete has high toughness and excellent durability, and has a high bond strength with the section steel. When used in the steel-concrete composite structure, it can effectively exert the synergistic performance between the section steel and the concrete, and make up for the relationship between the section steel and the concrete. Concrete has poor bonding performance and cannot give full play to the respective mechanical properties of the two.

Description

technical field [0001] The invention belongs to the field of building materials, and is a concrete with high toughness, high durability and high volume stability mixed with cellulose fiber, rice husk ash and carboxylated styrene-butadiene polymer, in particular to a high-strength concrete with C50 strength grade Performance fiber concrete and method for its preparation. Background technique [0002] The annual output of silica fume in my country is only 3000t-4000t, which can only meet the needs of some special concrete, limiting its large-scale use. And my country, as a large agricultural country, produces more than 40 million tons of rice husks every year, accounting for more than 30% of the world's total output. At present, except for some rice husks that are used in power plants for power generation, most of the rice husks are still piled up naturally or burned in the open air, which wastes resources and emits a large amount of carbon dioxide to pollute the surrounding ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B16/02C04B18/10C04B24/26
CPCC04B28/04C04B2201/50C04B2201/52C04B14/068C04B14/28C04B18/08C04B18/101C04B2103/302C04B2103/0068C04B18/24C04B2103/50C04B24/2676C04B24/2641C04B24/122C04B22/124C04B22/147Y02W30/91
Inventor 郑山锁董方园郑捷王斌阮升张艺欣董立国宋明辰郑淏张晓辉张睿明周炎
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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