Accession Number : AD0781508

Title :   Energy Balance on a Paved Surface.

Descriptive Note : Technical rept.,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s) : Berg,Richard L.

Report Date : JUN 1974

Pagination or Media Count : 58

Abstract : Energy balance data from portland cement concrete test slabs at the Lebanon Regional Airport, Lebanon, New Hampshire, are compared with calculated quantities. Energy balance components are calculated from techniques used by Scott in developing the cumulative heat flow technique for determining frost and thaw depths. Techniques for computing frost and thaw depths are briefly review to illustrate applications of the surface energy balance in frost and thaw depth calculations. Comparison of calculated and measured components of the energy balance indicates that computational techniques and/or data measurement techniques must be improved to provide estimated frost and thaw depths that are within 15% of measured depths. (Author)

Descriptors :   *Concrete, *Roads, *Heat transfer, Freezing, Thawing, Damage

Subject Categories : Construction Equipment, Materials & Supplies

Distribution Statement : APPROVED FOR PUBLIC RELEASE