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A kind of low-temperature frost-resistant concrete and its production process

A concrete and low-temperature technology, applied in the field of low-temperature anti-freezing concrete and its production technology, can solve the problems of low mechanical properties, poor low-temperature anti-freezing effect, etc.

Active Publication Date: 2022-06-28
淮南职业技术学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a low-temperature antifreeze concrete and its production process, which solves the problems of poor low-temperature antifreeze effect and low mechanical properties of concrete at the present stage through strong water reducing agents and strengthening toughening agents

Method used

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  • A kind of low-temperature frost-resistant concrete and its production process
  • A kind of low-temperature frost-resistant concrete and its production process
  • A kind of low-temperature frost-resistant concrete and its production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A low-temperature antifreeze concrete, comprising the following raw materials by weight: 300 parts of cement, 10 parts of superplasticizer, 50 parts of strengthening and toughening agent, 10 parts of triethylenetetramine, 120 parts of fly ash, 300 parts of medium sand, 100 parts of water;

[0043] The low-temperature frost-resistant concrete is made by the following steps:

[0044]The above-mentioned raw materials are weighed, and the above-mentioned raw materials are mixed uniformly to obtain low-temperature antifreeze concrete.

[0045] Described potent water reducing agent is made by the following steps:

[0046] Step A1: Mix p-chloromethyl styrene, maleic anhydride, sodium methacrylic acid sulfonate, dibenzoyl peroxide, and toluene evenly, and carry out the reaction under the conditions of a rotating speed of 150 r / min and a temperature of 70 °C After 5 hours, polyethylene glycol monomethyl ether and sodium hydroxide solution were added, and the reaction was carri...

Embodiment 2

[0055] A low-temperature antifreeze concrete, comprising the following raw materials by weight: 330 parts of cement, 13 parts of superplasticizer, 55 parts of strengthening and toughening agent, 13 parts of triethylenetetramine, 125 parts of fly ash, 350 parts of medium sand, 125 parts of water;

[0056] The low-temperature frost-resistant concrete is made by the following steps:

[0057] The above-mentioned raw materials are weighed, and the above-mentioned raw materials are mixed uniformly to obtain low-temperature antifreeze concrete.

[0058] Described potent water reducing agent is made by the following steps:

[0059] Step A1: Mix p-chloromethyl styrene, maleic anhydride, sodium methacrylic acid sulfonate, dibenzoyl peroxide, and toluene evenly, and carry out the reaction under the conditions of a rotating speed of 180 r / min and a temperature of 75 °C After 6 hours, polyethylene glycol monomethyl ether and sodium hydroxide solution were added, and the reaction was carr...

Embodiment 3

[0068] A low-temperature antifreeze concrete, comprising the following raw materials by weight: 350 parts of cement, 15 parts of superplasticizer, 60 parts of strengthening and toughening agent, 15 parts of triethylenetetramine, 130 parts of fly ash, 400 parts of medium sand, 150 parts of water;

[0069] The low-temperature frost-resistant concrete is made by the following steps:

[0070] The above-mentioned raw materials are weighed, and the above-mentioned raw materials are mixed uniformly to obtain low-temperature antifreeze concrete.

[0071] Described potent water reducing agent is made by the following steps:

[0072] Step A1: Mix p-chloromethyl styrene, maleic anhydride, sodium methacrylic acid sulfonate, dibenzoyl peroxide, and toluene evenly, and carry out the reaction under the conditions of a rotating speed of 180 r / min and a temperature of 80 °C After 7 hours, polyethylene glycol monomethyl ether and sodium hydroxide solution were added, and the reaction was carr...

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Abstract

The invention discloses a low-temperature antifreeze concrete and a production process thereof. The low-temperature antifreeze concrete comprises the following raw materials in parts by weight: 300-350 parts of cement, 10-15 parts of superplasticizer, and 50-60 parts of strengthening and toughening agent , 10-15 parts of triethylenetetramine, 120-130 parts of fly ash, 300-400 parts of medium sand, and 100-150 parts of water; when the water reducer is mixed with concrete, it can destroy the flocculation structure of cement particles, so that the cement The water wrapped in the flocs is released to improve the fluidity of the concrete, improve the workability of the concrete, make the concrete structure denser, and increase the strength of the concrete. The strengthening synergist is based on epoxy resin and can improve the strength of concrete. Antifreeze effect, at the same time, the molecular chain contains a large number of flexible groups, which improves the toughness of the strengthening synergist, thereby improving the toughness of concrete.

Description

technical field [0001] The invention relates to the technical field of concrete preparation, in particular to a low-temperature antifreeze concrete and a production process thereof. Background technique [0002] Concrete refers to an engineering composite material in which aggregates are cemented into a whole by cementitious materials. Concrete has the characteristics of abundant raw materials, low price, and simple production process. It is widely used in construction, machinery, geothermal engineering and other fields. With the continuous development of concrete components, people not only pay attention to the compressive properties of concrete, but also pay more attention to the durability, frost resistance, fire and explosion resistance, water seepage resistance, corrosion resistance and thermal insulation properties of concrete. As a construction application technology, high-strength concrete is currently a hot research topic at home and abroad, and has become a symbol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/02C04B111/20
CPCC04B28/02C04B2111/20C04B2201/50C04B24/121C04B18/08C04B14/06C04B24/005C04B24/06C04B24/16C04B24/10C04B24/00C04B24/32C04B22/062C04B22/141C04B24/123C04B22/085C04B24/008C04B24/124C04B24/128C04B24/127C04B22/08C04B22/04C04B22/122C04B24/281C04B24/40
Inventor 陈文峰朱友强王妍妍张睿
Owner 淮南职业技术学院
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