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Plant-mixed hot recycling asphalt concrete and preparation method thereof

An asphalt concrete and thermal regeneration technology, applied in the field of asphalt concrete, can solve the problems of large acid-base difference, reduced service life, and easy cracks of natural sand and gravel aggregates, and achieve improved bonding and adhesion, long service life, The effect of prolonging the service life

Inactive Publication Date: 2021-05-28
上海翟氏混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned patent application, natural sand and gravel are crushed and then added to asphalt concrete as aggregate to reduce engineering costs. When the asphalt concrete is subjected to high pressure during use, it is prone to cracks, which will greatly reduce its service life

Method used

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  • Plant-mixed hot recycling asphalt concrete and preparation method thereof
  • Plant-mixed hot recycling asphalt concrete and preparation method thereof
  • Plant-mixed hot recycling asphalt concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0056] A metal fiber obtained through the following steps:

[0057] S1. Mix 400mL of nitric acid, 100mL of hydrogen fluoride and 500mL of water to obtain surface treatment solution 1;

[0058] S2. Take 100 g of sulfuric acid solution with a concentration of 30%, add 2 g of imidazoline amide, stir and mix evenly, add 10 g of methyl glucose polyoxyethylene ether and 5 g of potassium dodecylsulfonate, continue to stir and mix evenly to obtain a surface Treatment solution two;

[0059] S3, immerse the carbon steel fiber in the surface treatment solution 1, let it stand for 2 minutes, wash it 3 times with deionized water, then immerse it in the surface treatment solution 2, after standing for 2 minutes, wash it 3 times with deionized water, after drying, That is, the surface-treated metal fiber is obtained.

preparation example 2

[0061] A metal fiber obtained through the following steps:

[0062] S1. Mix 200mL nitric acid, 50mL hydrogen fluoride and 250mL water to obtain surface treatment solution 1;

[0063] S2. Take 200g of sulfuric acid solution with a concentration of 30%, add 4g of imidazoline amide, stir and mix evenly, add 20g of methyl glucose polyoxyethylene ether and 10g of potassium dodecylsulfonate, continue to stir and mix evenly to obtain a surface Treatment solution two;

[0064] S3, immerse the carbon steel fiber in the surface treatment solution 1, let it stand for 3 minutes, wash it 3 times with deionized water, then immerse it in the surface treatment solution 2, after standing for 4 minutes, wash it 3 times with deionized water, after drying, That is, the surface-treated metal fiber is obtained.

preparation example 3

[0066] A kind of metal fiber, differs from Preparation Example 1 in that it is obtained through the following steps:

[0067] S1. Mix 400mL of nitric acid, 100mL of hydrogen fluoride and 500mL of water to obtain surface treatment solution 1;

[0068] S2. Take 100 g of sulfuric acid solution with a concentration of 30%, add 2 g of imidazoline amide, stir and mix evenly to obtain surface treatment solution 2;

[0069] S3, immerse the carbon steel fiber in the surface treatment solution 1, let it stand for 2 minutes, wash it 3 times with deionized water, then immerse it in the surface treatment solution 2, after standing for 2 minutes, wash it 3 times with deionized water, after drying, That is, the surface-treated metal fiber is obtained.

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Abstract

The invention relates to the technical field of asphalt concrete, and particularly discloses plant-mixed hot recycling asphalt concrete and preparation method thereof. The technical key points are as follows: the plant-mixed hot recycling asphalt concrete comprises the following components in parts by weight: 100 to 150 parts of new aggregate; 20 to 30 parts of old aggregate; 8 to 12 parts of asphalt; 1.5 to 4 parts of mineral powder; 1-2 parts of a regenerant; 0.5 to 1.1 parts of slaked lime; 5-10 parts of reinforced fibers; and 0.8 to 1.2 parts of a filler. The asphalt concrete prepared from the raw material components has high compressive strength and long service life.

Description

technical field [0001] The application relates to the technical field of asphalt concrete, more specifically, it relates to a factory-mixed heat-recycled asphalt concrete and a preparation method thereof. Background technique [0002] Asphalt concrete, commonly known as asphalt concrete, is artificially selected with a certain gradation composition of mineral materials, crushed stone or crushed gravel, stone chips or sand, mineral powder, etc., and a certain proportion of road asphalt materials, mixed under strictly controlled conditions made mixture. [0003] Publication No. CN110436828A Chinese patent application discloses a hydraulic asphalt concrete containing acid stones and a preparation method thereof, which includes asphalt, crushed natural sand and gravel aggregate, filler, sepiolite wool, rubber, wherein asphalt, Crushed natural sand and gravel aggregates and fillers are proportioned according to the following mass percentages: asphalt 6-6.8%, crushed natural sand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26C04B20/02C04B20/00C04B14/48C04B14/14C04B14/28
CPCC04B26/26C04B20/023C04B20/0076C04B2201/50C04B2111/0075C04B14/14C04B18/146C04B14/48C04B18/16C04B22/064C04B2103/0068C04B18/141C04B14/28
Inventor 翟笃铸
Owner 上海翟氏混凝土有限公司