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Recycled aggregate reinforced slurry and preparation method thereof

A recycled aggregate and slurry technology, applied in the field of building materials, can solve the problems of high crushing value, poor quality, high water absorption rate of recycled aggregate, etc., and achieve the effect of easy preparation, obvious effect and good mechanical properties

Pending Publication Date: 2021-12-17
江西秀川科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a method for preparing recycled aggregate reinforced slurry to solve the problems of high water absorption, high crushing value and poor quality of recycled aggregate in the above background

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1 A recycled aggregate reinforced slurry and its preparation method

[0039] It is composed of the following weight percentages: 6% lightly burned magnesium powder; 5% magnesium chloride hexahydrate; 1% superabsorbent polymer; 0.5% retarding component.

[0040] The recycled aggregate described in this embodiment is recycled coarse aggregate obtained by crushing and grading recycled concrete, and the particle size ranges from 5 to 25 mm.

[0041] The method for strengthening the recycled aggregate, its preparation method comprises the following steps:

[0042] (1) Soak the recycled aggregate in the magnesium oxychloride cement slurry solution for 4 hours;

[0043] (2) After soaking, steam the regenerated aggregate at 60°C and 90% relative humidity for 5 hours, then take it out and dry it;

[0044] (3) Mechanically vibrate the dried recycled aggregate to remove debris on the surface of the recycled aggregate;

[0045] (4) Immerse the cleaned recycled aggregate ...

Embodiment 2

[0047] Example 2 A Regenerated Aggregate Strengthening Slurry and Its Preparation Method

[0048] It is composed of the following weight percentages: 8% lightly burned magnesium powder; 6% magnesium chloride hexahydrate; 1.5% superabsorbent polymer; 0.7% retarding component.

[0049] The recycled aggregate described in this embodiment is recycled coarse aggregate obtained by crushing and grading recycled concrete, and the particle size ranges from 10 to 30 mm.

[0050] The method for strengthening the recycled aggregate, its preparation method comprises the following steps:

[0051] (1) Soak the recycled aggregate in the magnesium oxychloride cement slurry solution for 6 hours;

[0052] (2) After soaking, steam the recycled aggregates at 60°C and 90% relative humidity for 6 hours, and then take them out to dry;

[0053](3) Mechanically vibrate the dried recycled aggregate to remove debris on the surface of the recycled aggregate;

[0054] (4) Immerse the cleaned recycled ag...

Embodiment 3

[0056] Example 3 A recycled aggregate reinforced slurry and its preparation method

[0057] It is composed of the following weight percentages: 6% lightly burned magnesium powder; 12% magnesium chloride hexahydrate; 2% superabsorbent polymer; 9% retarding component.

[0058] The recycled aggregate described in this embodiment is recycled coarse aggregate obtained by crushing and grading recycled concrete, and the particle size range is 10-40mm.

[0059] The method for strengthening the recycled aggregate, its preparation method comprises the following steps:

[0060] (1) Soak the recycled aggregate in the magnesium oxychloride cement slurry solution for 8 hours;

[0061] (2) After soaking, steam the recycled aggregate at 70°C and 90% relative humidity for 7 hours, then take it out and dry it;

[0062] (3) Mechanically vibrate the dried recycled aggregate to remove debris on the surface of the recycled aggregate;

[0063] (4) Immerse the cleaned recycled aggregate in the mag...

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Abstract

The invention belongs to the technical field of building materials, and discloses recycled aggregate reinforced slurry and a preparation method thereof, and the recycled aggregate reinforced slurry comprises the following components by mass: 5-12% of caustic-burned magnesia powder; 4-16% of magnesium chloride hexahydrate; 1-4% of a super absorbent polymer; and 0.5-1% of a retarding component. The invention further discloses a preparation method of the recycled aggregate. By adopting the technical scheme, the performance characteristics of the magnesium oxychloride cement can be fully utilized, the granular recycled aggregate with excellent performance can be prepared within a short time, and meanwhile, the influence of the water-cement ratio and composition of the concrete adhesion mortar is avoided, and the method can be used for preparing the recycled aggregate from various grades of recycled concrete. The crushing value, the apparent density, the water absorption rate and the firmness of the recycled aggregate prepared by the method meet the I-class requirements of GB / T25177 Recycled Coarse Aggregate for Concrete, the recycled concrete is utilized to the maximum extent, resources are saved, and the environment is protected.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a strengthening liquid suitable for recycled aggregates and a preparation method thereof. Background technique [0002] In recent years, my country's investment in road engineering has increased greatly, and the road industry has attracted much attention. The subgrade engineering of road engineering requires a relatively large amount of earthwork, which provides an opportunity for the comprehensive utilization of construction waste. Construction waste can be used as earthwork to fill roadbeds, but construction waste contains complex components, especially organic matter, so it is necessary to first remove the organic components in construction waste and their unfavorable components that are not suitable for road engineering. In addition, the broken concrete coarse and fine aggregate can be combined with lime or cement to form stones, which can be used as a semi-rigi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B20/10
CPCC04B40/0039C04B20/1077C04B22/066C04B22/12C04B24/2652C04B24/38C04B18/16C04B20/1033C04B20/1022
Inventor 赵华胡勇关博文冯玉荣薛兴杰张硕文王爱鹏田乾马子宸邸文锦
Owner 江西秀川科技有限公司
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