DESIGN REFERENCE VALUE QUANTIFICATION METHOD FOR MODIFIER DOSAGE OF MODIFIED ASPHALT

WIPO Patent Application WO/2020/119166

A1

A design reference value quantification method for a modifier dosage of modified asphalt, relating to the technical field of pavement construction. The method comprises: drawing, on the basis of a change of the degree of unsaturation of a series of modified asphalt along with a modifier dosage determined by potentiometric titration, a curve of the change of the degree of unsaturation of the modified asphalt along with the modifier dosage; further obtaining a point of inflection of the change of the degree of unsaturation of the modified asphalt along with the modifier dosage by means of data fitting analysis; and establishing a reference value of the modifier addition dosage in the technological design of modified asphalt. The method can essentially and directly represent the chemical action mechanism between the modifier and matrix asphalt in the modified asphalt by accurately determining an effect of the modifier dosage on unsaturated bonds of modified asphalt molecules, and can also directly track a process during which the modifier in the modified asphalt transforms from an independent phase into a continuous phase, thus having a positive significance in obtaining high-performance modified asphalt.

LIANG BO (CN)
LIU ZHENGCHUN (CN)
ZHENG JIANLONG (CN)

PCT/CN2019/101149

June 18, 2020

August 16, 2019

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UNIV CHANGSHA SCI & TECH (CN)
UNIV CENTRAL SOUTH (CN)

G01N27/416

CN101949858A	2011-01-19
CN105136895A	2015-12-09
CN109580754A	2019-04-05
CN104076080A	2014-10-01
CN103364474A	2013-10-23
CN1070665A	1993-04-07
US4990456A	1991-02-05

CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)

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