Criegee intermediates are important species formed during the ozonolysis of alkenes. Reaction of stabilized Criegee intermediates with various species like SO2 and NO2 may contribute significantly to tropospheric chemistry. In the laboratory, self-reaction can be an important loss pathway for Criegee intermediates and thus needs to be characterized to obtain accurate bimolecular reaction rate c...

Highway subgrade bears millions of traffic loads over the years, and its strength, stiffness, long-term stability gradually decline. In this paper, dynamic triaxial tests were carried out to study time evolution spatial distribution strain pore pressure highway-subgrade soil under action load. The influence load on deformation was analyzed. Furthermore, a numerical-calculation model established...

Red mud is a strong alkaline waste discharged from the process of alumina extraction, which harmful to environment and its utilization rate always low. One effective ways utilize red used as road subgrade material. In this paper, industrial wastes including mud, fly ash, slag, desulfurized gypsum are basic raw materials prepare filling materials. A series laboratory tests, such compaction test,...

Mechanistic pavement design procedures based on elastic layer theory require characterization of all pavement layer materials including subgrade soil. This paper discusses the subgrade stiffness obtained from a new compaction device called the Intelligent Compaction (IC) roller on highway embankment projects in Kansas. Three test sections on two routes were compacted using a single, smooth stee...