Preparation method of high-strength anti-fracture concrete

A concrete and high-strength technology, applied in the field of concrete, can solve the problems of insufficient strength, high safety factor, fracture gap, etc., and achieve the effect of strong cohesion, guaranteeing dynamic balance, and preventing aging and cracking.

Inactive Publication Date: 2021-03-16
宿迁市京成建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-strength concrete preparation method for preventing fracture, so as to solve the problem of fracture cracks c

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Embodiment one

[0022] The invention provides a technical solution: a method for preparing high-strength concrete that prevents fracture. The mixed raw materials include the following components: 220 parts of cement, 165 parts of mixing water, 535 parts of sand, 995 parts of stone, 32 parts of phenolic resin, pulverized coal 62 parts of ash, 1.8 parts of sodium alginate, 16 parts of expansion agent, 9 parts of water reducing agent, 7 parts of retarder, 1.5 parts of sodium monofluorophosphate, including the following steps in sequence:

[0023] (1) Treatment of cement slurry: In the mixing step of cement slurry, cement and retarder need to be added to the mixer and stirred evenly, and then cement and retarder and part of the mixing water are put into the mixer for mixing to obtain cement When mixing the slurry, the rotating speed is controlled at 200rpm, and the time is controlled at two quarters of an hour.

[0024] (2) Mixing of cement mortar: the cement slurry obtai...

Example Embodiment

[0030] Embodiment two

[0031] The invention provides a technical solution: a method for preparing high-strength concrete that prevents fracture. The mixed raw materials include the following components: 270 parts of cement, 138 parts of mixing water, 489 parts of sand, 994 parts of stone, 39 parts of phenolic resin, pulverized coal 76 parts of ash, 2.2 parts of sodium alginate, 20 parts of expansion agent, 11 parts of water reducer, 9 parts of retarder, 1.6 parts of sodium monofluorophosphate, including the following steps in sequence:

[0032] (1) Treatment of cement slurry: In the mixing step of cement slurry, cement and retarder need to be added to the mixer and stirred evenly, and then cement and retarder and part of the mixing water are put into the mixer for mixing to obtain cement When mixing the slurry, the rotating speed is controlled at 150rpm, and the time is controlled at three quarters of an hour.

[0033] (2) mixing of cement mortar: the cement slurry obtained ...

Example Embodiment

[0039] Embodiment Three

[0040] The invention provides a technical solution: a method for preparing high-strength concrete that prevents fracture. The mixed raw materials include the following components: 300 parts of cement, 132 parts of mixing water, 426 parts of sand, 951 parts of stones, 44 parts of phenolic resin, pulverized coal 85 parts of ash, 2.4 parts of sodium alginate, 22 parts of expansion agent, 12 parts of water reducing agent, 10 parts of retarder, 1.8 parts of sodium monofluorophosphate, including the following steps in turn:

[0041] (1) Treatment of cement slurry: In the mixing step of cement slurry, cement and retarder need to be added to the mixer and stirred evenly, and then cement and retarder and part of the mixing water are put into the mixer for mixing to obtain cement When mixing the slurry, the rotating speed is controlled at 150rpm, and the time is controlled at two quarters of an hour.

[0042] (2) mixing of cement mortar: the cement slurry obta...

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PUM

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Abstract

The invention discloses a preparation method of high-strength anti-fracture concrete. The preparation method sequentially comprises the following steps: treating cement paste; mixing the cement mortar; mixing coal ash and the cement mortar; prefabricating and mixing an expanding agent and a water reducing agent; pretreating phenolic resin; mixing sodium alginate and sodium monofluorophosphate; andfinished product synthesis. According to the preparation method of the high-strength anti-fracture concrete, the expanding agent is doped into the concrete, a special expansion source is generated bythe expansion component, the fracture reason of the concrete after pouring is air humidity, and the proportion of the concrete during blending; The problem of cracking caused by shrinkage of concretein each setting period in the prior art can be solved, the net shrinkage value of the concrete in each age is ensured to be always less than the ultimate tensile value of the concrete, and the crackresistance of the concrete is effectively enhanced. The modified phenolic resin is added, the modified phenolic resin solves the problem of poor deformability with a concrete cured product, and can make the concrete resistant to aging.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a preparation method of high-strength concrete for preventing fracture. Background technique [0002] Concrete is one of the most important civil engineering materials today. It is a kind of artificial stone made of cementitious materials, granular aggregates, mixed water, and admixtures and admixtures added when necessary, prepared in a certain proportion, uniformly stirred, densely formed, cured and hardened. Concrete has the characteristics of rich raw materials, low price and simple production process, so its consumption is increasing. At the same time, concrete also has the characteristics of high compressive strength, good durability, and a wide range of strength grades. These characteristics make it widely used, not only in various civil engineering, but also in shipbuilding, machinery industry, marine development, geothermal engineering, etc. Concrete is also an import...

Claims

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Application Information

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IPC IPC(8): C04B28/02C04B111/23C04B111/27
CPCC04B28/02C04B2111/23C04B2111/343C04B2111/27C04B14/06C04B14/02C04B24/302C04B18/08C04B24/38C04B22/064C04B22/06C04B22/143C04B24/161C04B2103/22C04B22/16
Inventor 张成功
Owner 宿迁市京成建材有限公司
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