Compound early strength agent for cold-recycling of emulsified asphalt and preparation method and application of compound early strength agent

A technology of compounding early strength agent and emulsified asphalt, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of low early strength of emulsified asphalt cold regeneration, shorten the construction period, simple technology, and is conducive to popularization and application. Effect

Active Publication Date: 2016-06-29
JIANGSU SOBUTE NEW MATERIALS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of low early strength of emulsified asphalt cold regeneration in the prior art, the present inv

Method used

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  • Compound early strength agent for cold-recycling of emulsified asphalt and preparation method and application of compound early strength agent
  • Compound early strength agent for cold-recycling of emulsified asphalt and preparation method and application of compound early strength agent
  • Compound early strength agent for cold-recycling of emulsified asphalt and preparation method and application of compound early strength agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of EA502 cold recycled emulsified asphalt:

[0033] According to the preparation method of the emulsified asphalt in the content of the invention, the asphalt is selected from No. 70 road petroleum asphalt (Korean Ssangyong), and the emulsifier is selected from Runqiang-EA502 slow-cracking cold regeneration emulsifier (Jiangsu Subote New Material Co., Ltd.)

[0034] (2) The preparation of composite accelerator is as follows:

[0035] Weigh 7 parts of calcium chloride and 6 parts of sodium nitrate and dissolve them in 50 parts of water, then add 3 parts of diethanolamine, 2.5 parts of triethanolamine, 7 parts of sodium lignosulfonate water reducer, and 11 parts of polycarboxylate water reducer , 6 parts of alkylphenolic resin polyoxyethylene polyoxypropylene ether, 7 parts of polysiloxane polyoxyethylene polyoxypropylene ether and 0.5 part of sugar are stirred by suitable stirring equipment to obtain a uniform composite early strength agent solution;

[...

Embodiment 2

[0053] (1) The preparation of EA502 cold recycled emulsified asphalt is as follows:

[0054] EA502 cold regenerated emulsified asphalt is consistent with Example 1.

[0055] (2) The preparation of composite accelerator is as follows:

[0056] The preparation of the composite accelerator is consistent with that in Example 1.

[0057] (3) The preparation of compound early strength agent (early strength type) EA502 emulsified asphalt cold recycled mixture is as follows:

[0058] In addition to replacing the old milling and planing asphalt mixture of the Beijing-Taiwan Expressway He-Beng section overhaul project with the milling and planing old material of the Jiangxi Changtai Expressway Reconstruction and Expansion Project, other preparation methods, materials and steps are the same as those in Example 1. Early-strength EA502 emulsified asphalt cold regeneration The mix is ​​prepared consistently.

[0059] The properties of the early-strength EA502 emulsified asphalt cold recy...

Embodiment 3

[0071] (1) Preparation of EA502 cold recycled emulsified asphalt:

[0072] EA502 cold regenerated emulsified asphalt is consistent with Example 1.

[0073] (2) The preparation of composite accelerator is as follows:

[0074] Weigh 4 parts of calcium chloride, 3 parts of sodium sulfate and 6 parts of sodium nitrite and dissolve them in 50 parts of water, then add 3 parts of ethylene glycol, 2.5 parts of triethanolamine, 13 parts of acetone water reducer, and 5 parts of sulfamic acid Salt superplasticizer, 5 parts of high molecular weight polyoxyethylene polyoxypropylene ether, 8 parts of sodium sulfonate, 0.2 part of sodium sugar, 0.2 part of trisodium phosphate and 0.1 part of glycerol, stirred with suitable stirring equipment to obtain a uniform compound early strength agent solution;

[0075] (3) Adding compound early strength agent (early strength type) EA502 emulsified asphalt cold recycled mixture is prepared as follows:

[0076] Except for the change of the compound e...

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Abstract

The invention discloses a compound early strength agent for cold-recycling of emulsified asphalt. The compound early strength agent for cold-recycling of emulsified asphalt is prepared from, by mass, 5-20% of an inorganic salt type early strength agent body, 2-10% of an organic early strength agent body, 10-30% of a dispersing agent, 5-15% of demulsifier, 0.1-1% of retarder and 35-65% of water. According to the complex early strength agent, early strength improvement of a cold recycled mixture of emulsified asphalt is accelerated in two directions of acceleration of hydration of cement and promotion of demulsification of asphalt, the improvement extent can reach 1-3 times, the construction progress can be greatly accelerated, and it is beneficial to apply and popularize a cold-recycling technology emulsified asphalt; raw materials are chemical accessories commonly used in engineering, extremely easy to obtain and moderate in price, a compounding technology is simple, and large-scale production and application can be met; the long-term strength, volume index and water stability of the prepared cold recycled mixture of emulsified asphalt are greatly improved.

Description

technical field [0001] The invention belongs to the field of road engineering large and medium repair regeneration materials, and in particular relates to the development and application of a composite early strength agent suitable for improving the early strength of plant-mixed emulsified asphalt cold regeneration. Background technique [0002] At present, my country's highway construction has entered the stage of simultaneous construction and maintenance. The waste and old asphalt mixture produced by maintenance reaches 100-200 million tons every year, and it grows at a rate of 15% every year. A large amount of waste mixture not only pollutes the environment, but also occupies a large amount land. At present, asphalt pavement regeneration technology is mainly divided into hot regeneration technology and cold regeneration technology. Among them, hot regeneration technology has good pavement performance and is often used in road structural surfaces, while plant-mixed cold reg...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L97/00C08L33/02C08L71/02C08L83/04C08K13/02C08K3/16C08K3/28C08K5/17C08K5/053C08K3/32C08K3/30C08K5/42C08J3/03
CPCC08J3/03C08J2395/00C08J2433/02C08J2471/02C08J2483/04C08J2497/00C08K2201/014C08L95/00C08L2205/035C08L97/005C08L33/02C08L71/02C08L83/04C08K13/02C08K2003/162C08K3/28C08K5/17C08K2003/3045C08K5/053C08K2003/324C08K3/30C08K5/42C08K2003/164
Inventor 魏唐中洪锦祥陈香林俊涛朱晓斌熊子佳黄冲邓成
Owner JIANGSU SOBUTE NEW MATERIALS
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