Patent ID: 8834063
Filing Date: 2014-09-16
Classification: E01C

Abstract:
1. An asphalt pavement removing method for allowing hardened asphalt pavement provided on a steel plate to be peeled off from said steel plate and removed in the form of an asphalt block having a given planar size and thickness, comprising: a softened-layer forming step of subjecting said steel plate to electromagnetic induction heating to form, in said hardened asphalt pavement, a softened layer commencing at a lower surface of said hardened asphalt pavement in contact with said steel plate and extending partially thereinto in a thickness direction thereby defining the softened layer in contact with and between a hardened layer of said hardened asphalt pavement and said steel plate, wherein a first range of temperatures of the hardened asphalt pavement decreases substantially linearly from the lower surface in the thickness direction for approximately 19 mm, a second range of temperatures above the approximately 19 mm does not significantly change up to a top surface of the hardened asphalt; an extraction step of peeling off said softened layer formed in said softened-layer forming step, from said steel plate in contact with said softened layer, and fragmenting and extracting said asphalt pavement in the form of said asphalt block, the extraction step occurring while the asphalt pavement in the form of said asphalt block is in the first and second ranges of temperatures; and a moving step of moving said asphalt block extracted in said extraction step.