Study on Influence of Microcellular Foaming Temperature Mixture on Warm Mix Asphalt
WU Jingjie
ZHAO Hengbo
FU Jiancun
Abstract：The influence of micro foaming type of warm-mix additives on asphalt mixture is studied based on an actual engineering. By means of volume index equivalent method, the quality fraction and compaction temperature range of micro-foaming type of warm-mix additives in asphalt mixture are determined, and the performance is compared with surfactant-type temperature-mixing additives. The experiment shows that the addition of the micro foaming type of warm-mix additives can effectively improve the workability of asphalt mixture construction. When the compaction temperature is reduced by 20 ℃, the target porosity can still be reached, and the compaction degree and splitting strength of the asphalt mixture are ensured under the precondition of satisfying the high temperature stability and water damage ability of the mixture. Using the principle of hot mix and temperature spreading technology to study the application of micro foaming type of warm-mix additives in practical engineering, it is shown that this technology can prolong the effective time of construction compaction, guarantee compaction quality and road performance, and has obvious popularization value and practical engineering significance.
Keywords：road engineeringwarm asphalt mixturemicro foaming typepavement performance
Publication Date：2018-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：8( 74-80,86 )