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Environment-friendly asphalt warm mix regenerant and environment-friendly warm mix recycled asphalt pavement mixture

A technology of warm-mixing regenerated agent and recycled asphalt, which is applied in the direction of building insulation materials, building components, buildings, etc., can solve the problems of adverse effects on the performance of asphalt mixtures, secondary aging of asphalt, etc., and achieve reduction of secondary aging, performance recovery, The effect of reducing the heating temperature requirement

Active Publication Date: 2021-02-19
SHANDONG HI SPEED GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The common plant-mixed heat regeneration technology generally adopts a "double-drum" mixing building for production. Before mixing, RAP needs to be heated twice, and the heating temperature is as high as 150°C to 180°C. Under this temperature condition, the asphalt will age twice. The performance of the asphalt mixture is adversely affected;

Method used

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  • Environment-friendly asphalt warm mix regenerant and environment-friendly warm mix recycled asphalt pavement mixture

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Embodiment Construction

[0021] The environmentally friendly asphalt warm mix rejuvenator is one of the important innovations of the present invention, and its formulation optimization process is as follows:

[0022] (1) Through a single factor experiment, study the change law of asphalt performance when the three surfactants in component A are added to 70# base asphalt alone, and determine the range of the three surfactants. The experimental results are shown in Table 1;

[0023] Table 1

[0024]

[0025] (2) According to the dosage range determined in step (1), design three factors and eight levels U 8 (8 3 ) homogeneous experiment, when testing three kinds of surfactants mixed simultaneously, the temperature of the asphalt (W 0.17Pa·s ), the experimental results are shown in Table 2;

[0026] Table 2

[0027]

[0028] The "multi-factor and interaction item stepwise regression method" was used to fit the relationship between the performance index of 70# base asphalt and the content of surf...

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Abstract

The present invention proposes an environment-friendly asphalt warm-mix rejuvenator and an environment-friendly warm-mix regenerated asphalt pavement mixture. The environment-friendly asphalt warm-mix rejuvenator is composed of A component and B component; Glyceryl stearate, sorbitan fatty acid ester and oleic acid diethanolamide are mixed by the mass fraction ratio of 22.2:12.9:11.1; Described B component is made of linseed oil and epoxidized soybean oil by 46.6: The ratio of mass and number of parts of 7.2 is mixed; the beneficial technical effect of the present invention is: proposed a kind of environment-friendly type asphalt warm-mix regenerant and environment-friendly type warm-mix regenerated asphalt pavement mixture, the warm-mix regenerant adopted in this scheme, It can effectively reduce the viscosity of new asphalt, and at the same time restore the performance of aged asphalt, reduce the requirements for RAP heating temperature in the process of plant mixing heat regeneration, reduce the secondary aging of asphalt, and play an important role in improving the utilization efficiency of RAP.

Description

technical field [0001] The invention relates to a production technology of an asphalt pavement mixture, in particular to an environment-friendly asphalt warm-mix regeneration agent and an environment-friendly warm-mix regenerated asphalt pavement mixture. Background technique [0002] With the vigorous development of my country's traffic construction, the engineering industry's demand for green maintenance of roads is also increasing; waste asphalt (RAP) is an important natural resource that can be recycled and used in road construction and maintenance projects. At present, the common regeneration methods of asphalt pavement mainly include cold-in-place regeneration, hot-in-place regeneration, plant-mixed cold regeneration and plant-mixed hot regeneration. Among them, plant-mixed hot regeneration technology has wide applicability, operation The advantages of flexibility and easy guarantee of construction quality are widely used in our country. [0003] The common factory-mixe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L91/00C08K5/103C08K5/10C08K5/20C04B26/26
CPCC04B26/26C04B2111/00198C08L95/00C08L2205/02C08L2205/03C08L2207/22C08L91/005C08L91/00C08K5/103C08K5/10C08K5/20C04B18/167C04B24/085C04B24/045C04B24/124C04B14/00Y02A30/30
Inventor 张文武何兆益刘鹏杨德胜蒋文清王珊珊李韦剑
Owner SHANDONG HI SPEED GRP CO LTD
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