School of Traffic and Transportation;
Lanzhou Jiaotong University;
Lanzhou;
Gansu 730070;
China;
Qinghai Communications Technical College;
Xining;
Qinghai 810003;
China;
School of Civil Engineering;
Sun Yat-sen University;
Zhuhai;
Guangdong 519082;
China;
College of Engineering;
University of Alaska Anchorage;
Anchorage 99508;
USA;
Qinghai Research Institute of Transportation;
Xining;
Qinghai 810001;
China;
saline soil; brine; physical properties; the ratio of chloride to sulfate;