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A kind of magnesium oxychloride cement recycled aggregate concrete and its preparation method

A technology of magnesium oxychloride cement and recycled aggregates, which is applied in the field of building materials, can solve problems such as waste of resources, and achieve the effects of recycling, good high temperature resistance, and suitable final setting time

Active Publication Date: 2020-04-21
NANCHANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a magnesium oxychloride cement regenerated aggregate in order to solve the problems existing in the above-mentioned magnesium oxychloride cement in extreme environments, as well as the waste of resources caused by too much waste concrete waste, coal slag, and magnesium chloride at present. Concrete and its preparation method

Method used

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  • A kind of magnesium oxychloride cement recycled aggregate concrete and its preparation method
  • A kind of magnesium oxychloride cement recycled aggregate concrete and its preparation method
  • A kind of magnesium oxychloride cement recycled aggregate concrete and its preparation method

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Effect test

Embodiment 1

[0022] A magnesium oxychloride cement recycled aggregate concrete, which is composed of the following components in parts by weight: 12% magnesium oxide, 4% magnesium chloride, 2% composite water-resistant agent, 2% cinder powder, 30% recycled fine aggregate, recycled coarse Aggregate 45%, balance water.

Embodiment 2

[0024] A magnesium oxychloride cement regenerated aggregate concrete, which is composed of the following components in parts by weight: 30% magnesium oxide, 27% magnesium chloride, 4% composite water-resistant agent, 4% cinder powder, 5% regenerated fine aggregate, 5% regenerated coarse Aggregate 5%, balance water.

Embodiment 3

[0026] A magnesium oxychloride cement recycled aggregate concrete, which is composed of the following components in parts by weight: 14% of magnesium oxide, 14.2% of magnesium chloride, 2.6% of composite water-resistant agent, 3.2% of cinder powder, 26.6% of recycled fine aggregate, 26.6% of recycled coarse Aggregate 30.2%, balance water.

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Abstract

The invention discloses magnesium oxychloride cement recycled aggregate concrete and a preparation method thereof, and belongs to the technical field of building materials. The magnesium oxychloride cement recycled aggregate concrete is prepared from components by weight as follows: 12%-30% of magnesium oxide, 4%-27% of magnesium chloride, 2%-4% of a composite water repellent agent, 2%-4% of cinder, 5%-30% of recycled fine aggregate, 5%-45% of recycled coarse aggregate and the balance of water. Compared with the prior art, the magnesium oxychloride cement recycled aggregate concrete has the beneficial effects of being proper in final setting time, excellent in mechanical property, high-temperature-resistant and wide in application range; magnesium pollution to a salt lake is eliminated, and recycling of gravel and building solid waste is realized.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to magnesium oxychloride cement recycled aggregate concrete and a preparation method thereof. Background technique [0002] Magnesium oxychloride cement is also known as Sorel cement and magnesium cement. It is lightly calcined powder obtained from calcined magnesite or ash obtained from low-temperature calcined dolomite (mainly composed of MgO), and magnesium chloride hexahydrate (MgCl 2 ·6H 2 O) and other water-soluble magnesium salts as a blending agent, and then add water to form a cement hardened body. Magnesium oxychloride cement can harden quickly under normal temperature and pressure, forming artificial stone with high brittleness and high hardness. Magnesium oxychloride cement has many advantages: fast curing in the air, high lightness, surface gloss like marble, sound insulation, heat preservation, simple preparation process and short process, etc. It can be u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/32
CPCC04B28/32C04B2201/50C04B22/16C04B22/149C04B22/142C04B22/148C04B18/103C04B18/16
Inventor 张立明李佳张轩图刘福明孙红燕
Owner NANCHANG INST OF TECH
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