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Aggregate surface strengthening method and equipment

A surface strengthening and aggregate technology, applied in the field of aggregate surface strengthening, can solve the problem that porous and macroporous aggregates are not suitable for strengthening

Inactive Publication Date: 2020-05-08
SHENZHEN HUAWEI ENVIRONMENTAL PROTECTION BUILDINGMATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chemical strengthening methods mainly include pure cement slurry strengthening method, cement slurry adding silicon powder strengthening method, organic silicon emulsion strengthening method, polyvinyl alcohol solution strengthening method, etc. However, these aggregate strengthening technologies are mainly for concrete aggregate, clay sintering Brick aggregates and other aggregates with few pores and small voids are used for surface strengthening, but it is not suitable for the strengthening of porous and macroporous aggregates

Method used

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  • Aggregate surface strengthening method and equipment
  • Aggregate surface strengthening method and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] After autoclaved aerated concrete block aggregates are subjected to self-impact and friction shaping treatment by the aggregate shaping part 1, shaped coarse aggregates close to round or oval are obtained; into the wetting part 3 and sprayed with water mist to obtain a wet aggregate with a moisture content of 18%;

[0082] The wet aggregate falls into the first vibrating sieve 4 for the first sieving treatment, the under-sieve part is wet aggregate with a single particle size, the single particle size wet aggregate particle size is 6mm, and the cylinder compressive strength is 1.6 MPa;

[0083] The single-size wet aggregate falls into the mixer 5-3 through the aggregate batching hopper 5-1 and mixes evenly with the aluminate cement slurry, and falls into the second vibrating screen 6- through the lower hopper 5-4. 1 (the size of the sieve hole is 4mm, and the inclination angle is 25°), the second screening process is carried out, and the excess aluminate cement slurry ...

Embodiment 2

[0087] After autoclaved aerated concrete block aggregates are subjected to self-impact and friction shaping treatment by the aggregate shaping part 1, shaped coarse aggregates close to round or oval are obtained; into the wetting part 3 and sprayed with water mist to obtain a wet aggregate with a moisture content of 10%;

[0088] The wet aggregate falls into the first vibrating sieve 4 for the first sieving treatment, the under-sieve part is a wet aggregate with a single particle size, the particle size of the wet aggregate with a single particle size is 5 mm, and the cylinder compressive strength is 1.0 MPa;

[0089] The single-size wet aggregate falls into the mixer 5-3 through the aggregate batching hopper 5-1 and mixes evenly with the aluminate cement slurry, and falls into the second vibrating screen 6- through the lower hopper 5-4. 1 (the size of the sieve hole is 4mm, and the inclination angle is 20°), the second screening process is carried out, and the excess alumina...

Embodiment 3

[0093] After autoclaved aerated concrete block aggregates are subjected to self-impact and friction shaping treatment by the aggregate shaping part 1, shaped coarse aggregates close to round or oval are obtained; into the wetting part 3 and sprayed with water mist to obtain a wet aggregate with a moisture content of 20%;

[0094] The wetted aggregate falls into the first vibrating screen 4 for the first sieving treatment, the under-sieve part is wetted aggregate with a single particle size, the particle size of the wetted aggregate with a single particle size is 10mm, and the cylinder compressive strength is 0.8 MPa;

[0095] The single-size wet aggregate falls into the mixer 5-3 through the aggregate batching hopper 5-1 and mixes evenly with the aluminate cement slurry, and falls into the second vibrating screen 6- through the lower hopper 5-4. 1 (the size of the sieve hole is 7mm, and the inclination angle is 14°), the second screening process is carried out, and the excess...

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Abstract

The invention provides an aggregate surface strengthening method and equipment, and belongs to the technical field of aggregate strengthening. The aggregate surface strengthening method provided by the invention comprises the following steps: sequentially carrying out shaping treatment, wetting treatment and first screening treatment on aggregate, then mixing the aggregate with aluminate cement slurry, and then sequentially carrying out second screening treatment, third screening treatment and maintenance treatment. The aluminate cement slurry (with the mass ratio of aluminate cement to waterto the polycarboxylate superplasticizer to hydroxypropyl methyl cellulose is 1: (0.20-0.6): (0.002-0.20): (0.002-0.004)) with specific composition is adopted to wrap the aggregate, so that the strength of the aggregate is improved, and the second screening treatment, the third screening treatment and the maintenance are controlled, so that the surface strengthening of the macropore (with the sizeof greater than or equal to 0.1 mm) and porous aggregate(with the porosity is greater than or equal to 30%) is realized. The method and equipment are suitable for mass production.

Description

technical field [0001] The invention relates to the technical field of aggregate strengthening, in particular to an aggregate surface strengthening method and equipment. Background technique [0002] At present, the strengthening treatment methods for aggregate mainly include: physical strengthening method and chemical strengthening method. Among them, the chemical strengthening method has a good strengthening effect on aggregates and has attracted widespread attention. Chemical strengthening methods mainly include pure cement slurry strengthening method, cement slurry adding silicon powder strengthening method, organic silicon emulsion strengthening method, polyvinyl alcohol solution strengthening method, etc. However, these aggregate strengthening technologies are mainly for concrete aggregate, clay sintering Brick aggregates and other aggregates with few pores and small voids are used for surface strengthening, but it is not suitable for the strengthening of porous and m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B20/10C04B18/16
CPCC04B20/1077C04B18/16C04B20/04C04B20/026Y02W30/91
Inventor 关宇陆启政于珊欧小凡杨志文辛继宝
Owner SHENZHEN HUAWEI ENVIRONMENTAL PROTECTION BUILDINGMATERIAL
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