Shrinkage Characteristics of Cement Treated Base Subjected to Thermal Coupled with Moisture in the Field

Abstract

Shrinkage of semi-rigid materials like cement treated base subjected to thermal coupled with moisture has raised crack in semi-rigid base, which causes reflective crack in the asphalt concrete top layer. The deformation characteristics of cement treated base subjected to thermal coupled with moisture is researched through the strain acquired by the vibrating wire string gauge installed in the cement treated base while construction. And it is found that transverse deformation is larger than longitudinal strain which may raise greater stress in longitudinal direction as the restriction is stronger.