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Bridge construction concrete and preparation method thereof

A technology for construction and concrete, applied in the field of concrete, can solve problems such as corrosion of steel bar structures, and achieve the effect of improving impermeability, improving uniformity and stability, and good stability.

Active Publication Date: 2021-02-19
湖州上建华煜混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Regarding the concrete in the related art, the inventor believes that due to the coarse particle size of the concrete raw materials, gaps are formed between the raw materials after the concrete solidifies. Such gaps cause the concrete to have a certain permeability. Under water pressure, water is easy to Infiltrate into the pier part of the bridge and corrode the steel structure inside the pier made of concrete

Method used

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  • Bridge construction concrete and preparation method thereof
  • Bridge construction concrete and preparation method thereof
  • Bridge construction concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1: A concrete for bridge construction is prepared according to the following process.

[0051] (1) The hydrophobic filler is prepared according to the following process:

[0052] Step A1: Melt polyaryl silicone resin (organic silicon resin) and furfuryl alcohol phenolic resin (furan resin) at a weight ratio of 20:7 at a temperature of 280°C and stir evenly to obtain an adhesive; take 2.5 kg Adhesive and 29 kg of fly ash with an average particle size of 5 μm. Use a glue sprayer to spray the molten adhesive on the surface of the fly ash particles in the form of a spray. While spraying, stir the fly ash at 500 rpm. The stirring time is 2min, and the viscous carrier is obtained;

[0053] Step A2: When the temperature of the viscous carrier drops to 180°C, put the viscous carrier in a dryer, take 1.5kg of liquid pentafluorononyltrimethoxysilane (polysiloxane) and spray it through the atomizing nozzle On the viscous carrier, stir the viscous carrier at 100rpm while...

Embodiment 2-6

[0059] Embodiment 2-6: A kind of concrete for bridge construction. The difference from Embodiment 1 is that the content of each raw material component is different, and the corresponding components and quality are shown in Table 1.

[0060] Concrete components and proportioning table (㎏) for bridge construction in Table 1 embodiment 1-6

[0061]

[0062] Components and proportioning table (㎏) of hydrophobic filler in Table 2 embodiment 1-6

[0063]

Embodiment 7

[0064] Embodiment 7, a concrete for bridge construction, differs from Embodiment 1 in that the average particle size of fly ash in step A1 is 1 μm.

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Abstract

The invention discloses bridge construction concrete and a preparation method thereof. The bridge construction concrete comprises the following raw materials in parts by weight: 100-160 parts of cement, 130-170 parts of a fine aggregate, 230-290 parts of stone, 28-36 parts of water, 1.5-2.0 parts of a water reducing agent, a first component: 0.2-0.4 part of an air entraining agent, and a second component: 1.5-3.6 parts of a hydrophobic filler, wherein the hydrophobic filler is prepared from the following raw materials in parts by weight: 0.2-0.3 part of an adhesive, 0.1-0.2 part of polysiloxane, and 1.2-3.1 parts of fly ash. According to the invention, the concrete for bridge construction has the effects of being good in impermeability and stable and uniform in quality; and the preparationmethod disclosed by the invention has the advantage of improving the impermeability and the quality stability of the concrete.

Description

technical field [0001] The application relates to the technical field of concrete, and more specifically, it relates to a concrete for bridge construction and a preparation method thereof. Background technique [0002] A bridge is a building built to cross natural or artificial obstacles. When the bridge is built on water, the erosion of the flowing water will be severe, and the flowing water will gradually penetrate the concrete layer of the pier, causing corrosion of the steel bars inside the pier, reducing the strength and service life of the bridge. Therefore, bridge concrete not only needs to have high strength and high durability, but also needs to have certain impermeability. [0003] Disclose a kind of concrete that is used for building bridge in the Chinese patent application that publication number is CN107021685A, its raw material comprises the following components of mass parts: cement 60-75 parts, sand 20-30 parts, fly ash 20-35 parts , 5-12 parts of calcium ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/02C04B14/42C04B24/16C04B103/30C04B111/27
CPCC04B28/00C04B18/022C04B14/42C04B24/16C04B2103/304C04B2111/27C04B14/06C04B18/12C04B14/02C04B22/002C04B2103/302C04B18/08Y02W30/91
Inventor 范文栋叶强强岳晓伟
Owner 湖州上建华煜混凝土有限公司