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Durable concrete for segment manufacturing and preparation method thereof

A technology for durable concrete and segment, applied in the field of building materials, can solve the problems of bulky segment, high construction cost, uneconomical, etc., achieve durability and corrosion resistance improvement, save steel, and small section thickness Effect

Inactive Publication Date: 2021-01-29
苏州建嘉建筑构件制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of my country's economy, the construction of railways, highway tunnels, and urban subways has increased rapidly, and the demand for concrete segments suitable for the construction of railways, highway tunnels, and urban subways has also increased; in order to improve the durability and Bearing capacity, most of the existing concrete segments are based on the existing concrete materials by increasing the amount of steel and increasing the thickness of the segments to improve their load resistance and impermeability; this technical measure makes the segments very bulky, It is not economical, and the construction cost is very high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The durable concrete used for segment manufacturing according to the present invention comprises the following components: Portland cement 14%, fly ash 5%, yellow sand 28%, crushed stone 45%, admixture 0.1%, and the rest is water; wherein the admixture is ACE8101; the strength grade of the Portland cement is 52.5R.

[0021] A method for preparing durable concrete for segment manufacture as described above, comprising the following steps:

[0022] S1: Weigh all the raw materials according to the above components;

[0023] S2: Add Portland cement, fly ash, sand, and gravel to the collecting hopper in sequence, and then transport them to the mixer;

[0024] S3: Start the mixer, and add water to the mixer during the mixing process, and mix evenly. The water-binder ratio is 0.32, the amount of gelling material is 460kg / m3, and the mixing time is controlled at 3 minutes; the heating temperature of the water should not be high At 80°C and not lower than 60°C;

[0025] S4: A...

Embodiment 2

[0027] The durable concrete used for segment manufacturing according to the present invention comprises the following components: Portland cement 15%, fly ash 4%, medium sand 26%, crushed stone 48%, admixture 0.15%, and the rest is water; wherein the admixture is ACE8101; the strength grade of the Portland cement is 52.5R.

[0028] A method for preparing durable concrete for segment manufacture as described above, comprising the following steps:

[0029] S1: Weigh all the raw materials according to the above components;

[0030] S2: Add Portland cement, fly ash, sand, and gravel to the collecting hopper in sequence, and then transport them to the mixer;

[0031] S3: Start the mixer, add water to the mixer during the mixing process, and mix evenly. The water-binder ratio is 0.34, and the amount of gelling material is 440kg / m 3 , the mixing time is controlled at 2 minutes; the heating temperature of the water should not be higher than 80°C and not lower than 60°C;

[0032] S4...

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Abstract

The invention relates to durable concrete for segment manufacturing and a preparation method thereof. The durable concrete for segment manufacturing comprises the following components: 13%-16% of Portland cement, 3%-5% of fly ash, 25%-30% of sand, 40%-50% of gravels, 0.1%-0.2% of an additive and the balance of water. The preparation method comprises the following steps: weighing all the raw materials according to the components, adding the Portland cement, the fly ash, the sand and the gravels into a stirrer, starting the stirrer, adding water into the stirrer in the stirring process, finallyadding the additive into the stirrer, continuously stirring, and outputting. According to the concrete prepared by the invention, the durability and the corrosion resistance can be improved, and underthe same load, the thickness of the section of the duct piece prepared by the concrete is small, so that steel required by building materials can be saved.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a durable concrete used for manufacturing segments and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy, the construction of railways, highway tunnels, and urban subways has increased rapidly, and the demand for concrete segments suitable for the construction of railways, highway tunnels, and urban subways has also increased; in order to improve the durability and Bearing capacity, most of the existing concrete segments are based on the existing concrete materials by increasing the amount of steel and increasing the thickness of the segments to improve their load resistance and impermeability; this technical measure makes the segments very bulky, It is not economical, and the construction cost is very high. Contents of the invention [0003] The object of the present invention is to provide a durable concrete for seg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/90C04B111/20
CPCC04B28/04C04B2111/20C04B2111/90C04B2201/50C04B14/06C04B14/02C04B18/08C04B2103/0068
Inventor 王钰王伟俞军华俞斌高桂炳
Owner 苏州建嘉建筑构件制品有限公司
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