Construction method of pitch and modifying agent compatibility system model

Abstract

The invention relates to a construction method of a pitch and modifying agent compatibility system model, and belongs to the technical field of modified pitch. The main problems are solved that in theprior art, a pitch molecule model in an existing pitch and modifying agent compatibility system model used for molecular dynamics simulation is simple, on the whole, one typical molecule is utilizedfor representing all pitch components, a large difference is formed between the pitch molecule model and the real pitch structure, and the model accuracy is low. According to the method, an SBS segmented copolymer molecular structure model and a single pitch system crystal cell model are constructed mainly by utilizing molecular dynamics simulation software, the number of molecule models in the SBS segmented copolymer molecular structure model and the single pitch system crystal cell model are determined and combined in the software, and the SBS modified pitch blend system model is obtained. Amodified pitch four-component model in the blend system model is composed of larger molecules, so that simulation values of the density and the like are closer to numerical values of real pitch; therefore, when applied to molecular dynamics simulation, the pitch and modifying agent compatibility system model has good representation and prediction performance, and the research for the pitch and SBS modifying agent compatibility mechanism is also facilitated.

Description

technical field [0001] The invention relates to a method for establishing a compatible system model of asphalt and its modifier, which belongs to the technical field of modified asphalt. Background technique [0002] With the rapid development of modern science and technology, especially the wide application of computers, the research field of model methods is expanding day by day. From humanities to thinking science, model methods are being applied more and more and produce huge economic and social benefits. Analytical models And the significance of scientific research, will guide people to understand the function of the model more deeply, and broaden the thinking of modeling with beneficial enlightenment. [0003] The so-called model, in simple terms, refers to a simplified description of the research object made by people in order to achieve a specific purpose. The method of revealing the form, characteristics, essence and development law of the researched object through...

AI Technical Summary

Problems solved by technology

This method uses some modules of the molecular dynamics simulation software to construct the asphalt molecular model from the perspective of asphalt four-component analysis, so as to solve the problem that the asphalt molecular model constructed is relatively simple when constructing a modified asphalt compatible system, and Each component of asphalt is represented by a typical molecule, and there is still a big gap with the real complex molecular structure of asphalt, and the accuracy of the model is low, which makes the research have certain limitations.