Analysis of factors affecting water stability of foam warm mix asphalt mixture

water stability of warm mix asphalt mixture based on foamed is the key evaluation index affecting its road performance. The moisture content in production process unfavorable to mixture. In order improve stability, through immersion Marshall test and freeze-thaw splitting test, taking foaming effect, temperature, consumption polymer fiber as influencing factors, control variable method used study analyze influence factors results show that effect asphalt, are direct According importance analysis random forest variables, consumption, temperature most important while least. Taking this paper an example, it suggested with combination best 155 °C, 2% 0.3%.