Now showing items 741-748 of 748

    • Using Soil Temperatures to Monitor Thermosyphon Performance 

      Terry McFadden (American Society of Civil Engineers, 1987)
      The performance of passive heat removal devices (thermosyphons) in an experimental installation at the Bethel airport in Alaska is analyzed using the soil temperatures surrounding the units. Temperatures covering a four‐year ...
    • Hydraulic Analysis for Ice‐Covered Channel Networks 

      Gary C. Pasquarell; Hung Tao Shen (American Society of Civil Engineers, 1987)
      A computational method is developed for analyzing the hydraulics in a channel network with ice cover under steady‐state conditions. The formulation permits computations for networks in which both ice‐covered and free‐surface ...
    • Thawing Frozen Ground: Field Trials and Analysis 

      James M. Oswell; Michael D. Graham (American Society of Civil Engineers, 1987)
      Field trials and analytical modeling are conducted in order to evaluate methods for thawing frozen ground. Propane heaters, electric heaters, and coal and straw fires are built over specially constructed test pads. Surface ...
    • Evaluating Mix Designs for Cold Weather Concreting 

      Bruce A. Suprenant (American Society of Civil Engineers, 1987)
      A thermodynamic method for evaluating mix designs is developed and used to analyze the requirements of American Concrete Institute (ACI) 306 “Cold Weather Concreting.” Cement content, types, and accelerators are the possible ...
    • Editor's Letter 

      Bernard A. Alkire (American Society of Civil Engineers, 1987)
    • National Needs in Arctic Research 

      A. L. Washburn (American Society of Civil Engineers, 1987)
    • Classification and Laboratory Testing of Artificially Frozen Ground 

      F. H. Sayles; T. H. W. Baker; F. Gallavres; H. L. Jessberger; S. Kinosita; A. V. Sadovskiy; D. Sego; S. S. Vyalov (American Society of Civil Engineers, 1987)
      The proposed guidelines for classifying artificially frozen ground are based on the Unified Soil Classification System, with the addition of salinity evaluation. For testing frozen soils in the laboratory, it is recommended ...
    • Nature of Fines Produced in Aggregate Processing 

      Robert M. Pintner; Ted S. Vinson; Eric G. Johnson (American Society of Civil Engineers, 1987)
      The fines produced in a three‐part laboratory test series developed to simulate crushing, handling, and placement of roadway aggregates were compared to fines determined from field records for six aggregate sources in ...