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Highway concrete formula and processing technology

A processing technology, concrete technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of reduced concrete fluidity, impact on concrete quality, slump loss, etc., to reduce water absorption , save laying costs, improve the effect of compactness

Pending Publication Date: 2022-07-12
陈倩倩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned crushing and recycling equipment for construction waste can realize film coating on the surface of the crushed aggregate, but during the crushing process, not only the required fragments but also debris are produced, and the debris is attached to the surface of the aggregate , when the silicone waterproof and oil-repellent agent is sprayed and coated on the aggregate, due to the coverage of debris, the surface of the fragments cannot be fully contacted with the silicone waterproof and oil-resistant agent. After the aggregate is put into use, the silicone waterproof After the oil repellant is not completely dried, the debris falls off into pieces, and the surface of the fragments that is not covered by the silicone waterproof and oil repellant is exposed, which leads to the aggregate still having strong water absorption performance, resulting in the reduction of free water in the prepared concrete, and the concrete Reduced fluidity, slump loss, affecting concrete quality

Method used

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  • Highway concrete formula and processing technology
  • Highway concrete formula and processing technology
  • Highway concrete formula and processing technology

Examples

Experimental program
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Effect test

Embodiment 1

[0054] refer to Figure 1-7 , a highway concrete processing technology, the processing technology is used for processing the above-mentioned a kind of highway concrete formula, the processing technology comprises the following steps:

[0055] S1: Material screening, firstly screen the slag pellets, steel slag aggregate and sand in the fine material by particle diameter, control the diameter of slag pellets to be 2-4MM, the diameter of steel slag aggregate to be 2-4MM, and the size of sand particles to be 2-4MM. The diameter specification is 1-3MM, spare;

[0056] S2: Preparation of waste recycled aggregates in buildings. Select the air bricks discarded at the construction site, transfer them to the aggregate preparation site, and transport the air bricks to the aggregate production equipment 1 through the conveyor belt. The aggregate production equipment 1 will It is crushed and finely crushed. After crushing, the silicone waterproof and oil-repellent agent is sprayed, so tha...

Embodiment 2

[0067] refer to Figure 8 , Comparative Example 1, as another embodiment of the present invention, wherein the spray end of each atomizing nozzle 13 is rectangular, the spray port of the atomizing nozzle 13 is wavy; It is arranged in a wave shape, so that the sprayed silicone waterproof and oil repellant is in a wave shape, and is sprayed on the fragments in a layered shape, and the two vertical rows of atomizing nozzles 13 are arranged staggered up and down, so that during the falling process of the fragments, organic Under the impact of the silicone water and oil repellent, it is turned upside down, so that the fragments are fully contacted with the silicone water and oil repellent, which improves the surface film coverage of the fragments and reduces the water absorption effect of the fragments.

[0068] Working principle: The air bricks are lifted up and transported to the crushing cylinder 3 through the conveyor belt. The air bricks are crushed by the crushing teeth on th...

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Abstract

The invention belongs to the technical field of concrete highways, and particularly relates to a highway concrete formula and a processing technology, and the highway concrete processing technology comprises the following steps: S1, material screening: firstly, carrying out particle diameter screening on slag aggregates, steel slag aggregates and sand in fine materials; s2, building waste recycled aggregate preparation: selecting waste air bricks of a construction site, transferring the air bricks to an aggregate preparation site, conveying the air bricks into aggregate production equipment through a conveying belt, crushing and finely crushing the air bricks by the aggregate production equipment, spraying an organic silicon waterproof and oil-resistant agent after crushing, and drying to obtain the building waste recycled aggregate. A layer of organic silicon waterproof oil-resistant agent film is attached to the surface of the recycled aggregate, so that the water absorption performance of the recycled aggregate is reduced; and S3, preparing road concrete from the recycled aggregate with the organosilicon waterproof and oil-resistant agent film prepared in the S2 according to a ratio, and carrying out a slump test on the road concrete before laying.

Description

technical field [0001] The invention belongs to the technical field of concrete highways, in particular to a highway concrete formulation and a processing technology. Background technique [0002] Cement concrete pavement refers to the pavement with cement concrete as the main material as the surface layer, referred to as concrete pavement, which is a kind of advanced pavement. Reuse of resources can also save the cost of laying concrete roads. [0003] A Chinese patent with publication number CN110465362A discloses a construction waste waste crushing and recycling equipment. The area is welded, and one end of the entire area is provided with a discharge port. There are two discharge ports, which correspond to the discharge tray one-to-one. The material box is installed in the support seat and is located at the bottom end of the leveling area. In the present invention, the discharge tray and the material supply box are connected by pipes, and the inside of the material sup...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B20/10C04B20/02
CPCC04B28/04C04B20/02C04B20/026C04B20/1051C04B2111/0075C04B18/12C04B18/141C04B18/142C04B18/16C04B14/068Y02W30/91
Inventor 陈倩倩
Owner 陈倩倩
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