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Enhanced admixture for municipal refuse recycled concrete as well as preparation method thereof and application thereof

A technology for recycled concrete and urban waste, applied in the field of building materials, can solve problems such as poor mechanical properties, poor work performance, high impurity content, etc., achieve high surface activity and dispersion effect, high production efficiency, and wide source effects

Active Publication Date: 2014-07-02
富春控股集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the high mortar content of recycled aggregate, the characteristics of low apparent density, high water absorption, and high content of impurities such as mud powder make it show poor workability and poor mechanical properties in the actual production of concrete.
The usual production method is to increase water consumption or pre-wet the aggregate, but it cannot fundamentally solve the problem of using recycled aggregate

Method used

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  • Enhanced admixture for municipal refuse recycled concrete as well as preparation method thereof and application thereof
  • Enhanced admixture for municipal refuse recycled concrete as well as preparation method thereof and application thereof
  • Enhanced admixture for municipal refuse recycled concrete as well as preparation method thereof and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Weigh the raw materials of each component according to the following proportions: polyacrylic acid ether polymer 0g, β-naphthalene sulfonate formaldehyde condensate 5g, sulfonated melamine formaldehyde resin 5g, water-soluble sulfonated acetone-formaldehyde condensation polymer 0g , calcium lignosulfonate 20g, sodium gluconate: 0.1g, sodium lauryl sulfate: 0.1g, water glass: 1g, potassium methyl silicate: 1g, sodium thiocyanate: 0.1g, sodium metaphosphate: 1g, water 66.7g;

[0047] (2) Mix the raw materials of the above components evenly: the stirring temperature is 40°C, the stirring speed is 10 rpm, and the stirring time is 30 minutes.

Embodiment 2

[0049] (1) Weigh the raw materials of each component according to the following proportions: polyacrylic acid ether polymer 0g, β-naphthalenesulfonate formaldehyde condensate 40g, sulfonated melamine formaldehyde resin 5g, water-soluble sulfonated acetone-formaldehyde condensation polymer 10g , calcium lignosulfonate 0g, sodium gluconate: 0.5g, sodium lauryl sulfate: 0.5g, water glass: 5g, potassium methyl silicate: 10g, sodium thiocyanate: 1g, sodium metaphosphate: 5g , water 23g;

[0050] (2) Mix the raw materials of the above components evenly: the stirring temperature is 20°C, the stirring speed is 1300 rpm, and the stirring time is 1 minute.

Embodiment 3

[0052] (1) Weigh the raw materials of each component according to the following proportions: polyacrylic acid ether polymer 0g, β-naphthalene sulfonate formaldehyde condensate 0g, sulfonated melamine formaldehyde resin 10g, water-soluble sulfonated acetone-formaldehyde condensation polymer 40g , calcium lignosulfonate 10g, sodium gluconate: 3g, sodium lauryl sulfate: 3g, water glass: 10g, potassium methyl silicate: 0.5g, sodium thiocyanate: 3g, sodium metaphosphate: 10g, 10.5g of water;

[0053] (2) Mix the raw materials of the above components evenly: the stirring temperature is 80°C, the stirring speed is 500 rpm, and the stirring time is 10 minutes.

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Abstract

The invention belongs to the technical field of building materials and relates to an enhanced admixture for a municipal refuse recycled concrete as well as a preparation method thereof and the application thereof. The enhanced admixture comprises the following functional components for water reduction, enhancement, impurity shielding and the like in percentage by weight: 0-50% of polycarboxylic acid water reducer, 0-50% of highly efficient naphthalene water reducer, 0-50% of melamine resin water reducer, 0-50% of highly efficient aliphatic water reducer, 10-50% of lignosulfonate, 0.1-5% of sodium gluconate, 0.1-5% of sodium dodecyl sulfate, 0.1-10% of sodium silicate, 0.1-10% of potassium methyl silicate, 0.1-10% of sodium thiocyanate, 0.1-10% of sodium metaphosphate and 10-65% of water. In addition, the invention further discloses the preparation method and the application of the enhanced admixture. The enhanced admixture for the municipal refuse recycled concrete, provided by the invention, has the advantages of wide raw material source, simple production method, high production efficiency and obvious use effect and is suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of building materials, and relates to a reinforced admixture (hereinafter referred to as a reinforcing agent) for urban waste recycled concrete, a preparation method and an application thereof. Background technique [0002] In recent years, with the development of urban construction, a large amount of urban construction waste has been produced, including a large amount of waste concrete. In addition to the staggering cost of disposal, the huge amount of waste concrete needs to occupy a large amount of open space for storage, pollute the environment, waste cultivated land, and become a major public hazard in the city. The environmental problems caused by this are very prominent. Therefore, how to deal with these construction wastes reasonably has aroused the general concern of government departments and the public. At the same time, with the continuous mining of natural sand and gravel, natural aggregate res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/26C04B18/16
CPCY02W30/91
Inventor 袁翔张雄孙剑艳
Owner 富春控股集团有限公司
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