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Concrete modified by steel fiber enhanced polymer and preparation method

A steel fiber and polymer technology, which is applied in the field of steel fiber reinforced polymer modified concrete for rigid pavement of concrete bridge decks and its preparation, can solve problems such as poor performance and impact resistance, and achieve high bonding Effects of performance, high ductility, high durability permeability

Inactive Publication Date: 2006-07-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a steel fiber reinforced polymer modified concrete and its preparation method for the defects of the prior art, so as to overcome the penetration, wear resistance, skid resistance, deformation, initial cracking, shrinkage, and detachment of steel fiber concrete. Defects with poor properties such as emptying and peeling, and defects with poor properties of polymer modified concrete such as bending resistance, tensile resistance, shear resistance, fatigue resistance, and impact resistance. High strength, small shrinkage, anti-vacuum, anti-peeling, high bending, tensile, shear strength, fatigue resistance, impact resistance and other effects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation method of steel fiber reinforced polymer modified concrete is as follows:

[0030] (1) Clean the medium sand and stones and keep them in a dry state;

[0031] (2) After the steel fiber is poured out from the bag, check and remove the steel fiber with rust and agglomeration;

[0032] (3) The mixture of latex emulsion and defoamer is obtained after the defoamer and latex emulsion are prepared and stirred evenly in a mass ratio of 3.8%: 1;

[0033] (4) Prepare the batching bucket, add the mixture of water, latex emulsion and defoamer to the batching bucket successively according to the mass ratio of water and latex 0.45:7.5%, then stir evenly to obtain a uniform mixture;

[0034] (5) Put cement, medium sand, and stones into the mixing equipment according to the mass ratio of 1:2:2.3, and then put into the steel fibers according to the volume ratio of steel fibers and concrete of 1.2%:1, and mix evenly;

[0035] (6) Put the prepared latex emulsion, defoame...

Embodiment 2

[0038] The preparation method of steel fiber reinforced polymer modified concrete is as follows:

[0039] (1) Clean the medium sand and stones and keep them in a dry state;

[0040] (2) After the steel fiber is poured out from the bag, check it, remove the steel fiber with rust and agglomeration, and wait for use;

[0041] (3) mix defoamer and latex emulsion by mass ratio 3%: 1 and stir well to obtain the mixture of latex emulsion and defoamer;

[0042] (4) Prepare the batching bucket, add the mixture of water, latex emulsion and defoamer to the batching bucket successively according to the mass ratio of water and latex 0.35:5%, then stir evenly to obtain a uniform mixture;

[0043] (5) Put cement, medium sand, and stones into the mixing equipment according to the mass ratio of 1:1.5:1.8, and then put into the steel fibers according to the volume ratio of steel fibers and concrete of 1%:1, and mix evenly;

[0044] (6) Put the prepared latex emulsion, defoamer and water into ...

Embodiment 3

[0047] The preparation method of steel fiber reinforced polymer modified concrete is as follows:

[0048] (1) Clean the medium sand and stones and keep them in a dry state;

[0049] (2) After the steel fiber is poured out from the bag, check and remove the steel fiber with rust and agglomeration;

[0050] (3) mix defoamer and latex emulsion by mass ratio 3.5%: 1 and stir well to obtain the mixture of latex emulsion and defoamer;

[0051] (4) Prepare the batching bucket, add the mixture of water, latex emulsion and defoamer to the batching bucket successively according to the mass ratio of water and latex of 0.3:10%, then stir evenly to obtain a uniform mixture;

[0052] (5) Put cement, medium sand, and stones into the mixing equipment according to the mass ratio of 1:1.45:1.78, and then put into the steel fibers according to the volume ratio of steel fibers and concrete of 1.2%:1, and mix evenly;

[0053] (6) Put the prepared latex emulsion, defoamer and water into the mixing ...

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Abstract

The prepn. method is as followings: mixing and stirring defoamer and emulsion latex according to mass ratio 3-4 percent: 1 to obtain mixture, the mass ratio of water and emulsion latex is 0.3-0.48:2.5-10 percent, water, defoamer and emulsion latex are uniform stirred, putting cement, sand and cobblestone into mixing machine according to mass ratio 1:1.45-2.2:1.78-2.73, then putting said mixture of emulsion latex, defoamer and water into mixing machine to stir uniformly to produce steel fibre reinforced polymer modified concrete.

Description

technical field [0001] The invention relates to civil engineering, in particular to steel fiber reinforced polymer modified concrete suitable for rigid pavement of concrete bridge deck and overlay of old cement concrete pavement, especially rigid pavement of concrete bridge deck and its preparation method . Background technique [0002] Practice over the years has shown that when choosing bridge deck pavement materials, the following requirements should be paid attention to: [0003] 1. Durable and can be used for a long time; [0004] 2. Watertight; [0005] 3. Good adhesion to the bridge deck; [0006] 4. Good skid resistance. [0007] Commonly used concrete bridge deck rigid paving materials include ordinary cement concrete, waterproof concrete, steel fiber reinforced concrete, and polymer modified concrete. The disadvantages of each concrete are as follows: [0008] Although ordinary concrete is cheap and widely used, its matrix has many...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B14/48C04B14/02C04B14/04C04B24/00C04B26/00
Inventor 罗立峰钟鸣黄成造何培勇钱尚宁黄培彦汤立群曾庆敦周建春刘逸平
Owner SOUTH CHINA UNIV OF TECH