High strength crack resistant concrete and preparation method thereof

A concrete and high-strength technology, applied in the field of high-strength crack-resistant concrete and its preparation, can solve the problems of affecting the service life of concrete, deepening concrete cracks, reducing concrete durability, etc., to increase compactness, improve strength and impermeability, The effect of reducing porosity

Inactive Publication Date: 2019-11-12
青岛鑫汇商砼工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The existing methods to solve concrete cracks are to fill the cracks with the expansion of the expansion agent after the cement produces the heat of hydration, or to control the further development of concrete cracks through fiber materials, so as to achieve the purpose of crack resistance; although in the s

Method used

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  • High strength crack resistant concrete and preparation method thereof
  • High strength crack resistant concrete and preparation method thereof

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Example Embodiment

[0039] Preparation Example 1: 1. Take bentonite, sodium polyacrylate, sodium silicate and magnesium stearate with a weight ratio of 3:3:2:1 respectively, and after drying them to a moisture content of <0.2%, obtain a filling material for subsequent use;

[0040] ② Take porous zeolite and porous ceramsite, immerse them in a 3wt% hydrochloric acid solution, soak for 8 hours, wash with water, and dry at 100°C for 8 hours to obtain an activated porous framework material;

[0041] ③ Mix 20kg of activated porous skeleton material with 50kg of filler material, and stir at a speed of 1000r / min for 1 hour to obtain a porous skeleton material loaded with filler material;

[0042] ④ get 80kg polylactic acid resin, 0.3kg epoxidized soybean oil and 0.3kg phthalic anhydride, after mixing, it is warming up to 170 ℃, after making it melt, obtain coating material; Get 20kg coating material, to wherein The porous skeleton material loaded with the filler material was added, and after stirring unif...

Example Embodiment

[0043] Preparation example 2: 1. get bentonite, sodium polyacrylate, sodium silicate and magnesium stearate with a weight ratio of 3:3:2:1 respectively, and after drying it to moisture content <0.2%, obtain a filling material for subsequent use;

[0044] ② Take the porous ceramsite, immerse it in a 4wt% hydrochloric acid solution, soak it for 9 hours, wash it with water, and dry it at a temperature of 110°C for 9 hours to obtain an activated porous skeleton material;

[0045] ③ Mix 20kg of activated porous skeleton material with 50kg of filler material, and stir at a speed of 1500r / min for 1.5h to obtain a porous skeleton material loaded with filler material;

[0046] 4. get 85kg polylactic acid resin, 0.4kg epoxidized soybean oil and 0.4kg phthalic anhydride, after mixing, it is warming up to 180 ℃, after making it melt, obtain coating material; Get 20kg coating material, to wherein The porous skeleton material loaded with the filler material was added, and after stirring uni...

Example Embodiment

[0047] Preparation Example 3: 1. get bentonite, sodium polyacrylate, sodium silicate and magnesium stearate with a weight ratio of 3:3:2:1 respectively, and after drying it to moisture content≤0.2%, obtain a filling material for subsequent use;

[0048] ② Take the porous zeolite, immerse it in a 5wt% hydrochloric acid solution, soak it for 10 hours, wash it with water, and dry it at a temperature of 120°C for 10 hours to obtain an activated porous framework material;

[0049] ③ Mix 20kg of activated porous skeleton material with 50kg of filler material, and stir at a speed of 2000r / min for 2 hours to obtain a porous skeleton material loaded with filler material;

[0050] 4. get 90kg polylactic acid resin, 0.5kg epoxidized soybean oil and 0.5kg phthalic anhydride, after mixing, it is warming up to 190 ℃, after making it melt, obtain coating material; Get 20kg coating material, to wherein The porous skeleton material loaded with the filler material was added, and after stirring ...

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Abstract

The invention discloses high strength crack resistant concrete and a preparation method thereof, and relates to the technical field of building materials. According to the main points of the technicalscheme: the high strength crack resistant concrete is prepared from the following components in parts by weight: 380-400 parts of cement, 650-670 parts of sand, 940-980 parts of macadam, 80-100 partsof an admixture, 5-10 parts of a reinforced fiber, 50-70 part of a repairing additive, 3-5 parts of an early strength agent, 5-7 parts of a water reducing agent and 120-140 parts of water; and the repairing additive is made of a filling material, a porous skeleton material and a degradable coating material with the weight ratio of 3:5:2. According to the high strength crack resistant concrete andthe preparation method thereof, through the reinforced fiber, crack resistant and reinforcement effects can be played, cracks in the process of concrete using can be repaired by the effect of the repairing additive, thus durability of the concrete is improved, and the service life of the concrete is prolonged.

Description

technical field [0001] The invention relates to the technical field of building materials, more specifically, it relates to a high-strength crack-resistant concrete and a preparation method thereof. Background technique [0002] Ordinary concrete refers to the artificial stone made of cement as the main cementitious material, mixed with water, sand, stone, admixtures and mineral admixtures in appropriate proportions, uniformly stirred, compacted and cured. Concrete is mainly divided into two stages and states: the plastic state before setting and hardening, that is, fresh concrete or concrete mixture; the hard state after hardening, that is, hardened concrete or concrete. Concrete strength grades are divided by the standard value of cubic compressive strength. Generally, concrete with a strength grade of C60 and above is called high-strength concrete, and concrete with a strength grade above C100 is called ultra-high-strength concrete. [0003] In the process of concrete mi...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B24/28C04B111/34
CPCC04B28/04C04B40/0046C04B2111/343C04B14/104C04B24/2641C04B12/04C04B24/085C04B14/047C04B18/025C04B24/285C04B24/08C04B24/04C04B14/06C04B14/02C04B18/08C04B18/141C04B24/383C04B16/0633C04B14/48C04B24/18C04B22/002
Inventor 修嘉伟
Owner 青岛鑫汇商砼工程有限公司
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