A Method for Optimizing Emulsifier for Cold Recycling Based on Mixture Performance

Abstract

The invention provides a cold-recycling emulsifier optimizing method based on mixture performance. The method comprises the following steps of (1) measuring early strength; (2) measuring conveying stability; (3) determining integrality; (4) setting optimization conditions of emulsifier as that A, the early strength is qualified when the cohesive force is greater than 180 g / cm2, and the greater the early strength is, the more applicable the emulsifier is to early traffic opening, B, when the time required from production to construction and compaction of emulsified asphalt can be smaller than an operable time, conveying stability is qualified; C, the integrality is qualified when intact core samples can be taken out. The cold-recycling emulsifier optimizing method based on the mixture performance can be used for optimizing cold-recycling emulsifiers under different construction and application conditions.

Description

technical field [0001] The invention relates to a method for optimizing emulsifiers for cold regeneration, in particular a method for easily optimizing monomeric emulsifiers or compound emulsifiers for cold regeneration, and belongs to the technical field of highway asphalt pavement performance testing. Background technique [0002] The design service life of asphalt pavement is generally 8 to 15 years. From now on, about 10% of asphalt pavement will enter the maintenance or reconstruction cycle every year, and the waste asphalt pavement materials will reach millions of tons every year. If these waste asphalt pavement materials can be recovered and recycled, at least hundreds of millions of yuan in material costs will be saved every year, and with the continuous construction of infrastructure, this figure is still growing at a rate of about 15% per year. [0003] The emulsified asphalt cold recycling technology is to mill, crush and screen the old surface of the original pav...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for optimizing the monomer or compound emulsifier for cold regeneration, which can aim at the technical difficulties in production and construction, and optimize the emulsifier in a targeted manner, so as to verify the emulsified asphalt formula. The method Simple and easy to implement, it solves the problem that there is no optimal method of emulsifier for cold recycling based on the performance of the mixture

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