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Title: Frost investigations, fiscal year 1951 : first interim report of field investigations at frost test section, Limestone, Maine
Authors: United States. Army. Corps of Engineers. New England Division
Keywords: Airfields
Pavement bases
Frost action
Frost penetration
Frost heave
Frost heaving
Bearing tests
Spring thaw
Publisher: Arctic Construction and Frost Effects Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (Arctic Construction and Frost Effects Laboratory (U.S.)) ; no. 37.
Description: Technical Report
Summary: A special frost test area 30 feet by 40 feet was constructed at Limestone Air Force Base, Limestone, Maine during the Summer of 1950. The test area consists of four test sections with varying thicknesses of pavement and base course constructed over the natural gravelly sandy clay subgrade. A program of tests was initiated in October 1950 to make continuous observations of the factors which are considered to influence frost action, such as air and subsurface temperatures, ground water conditions and soil characteristics. Pavement heave was measured during the freezing period. Test pits were dug in the Fall of 1950 prior to freezing, and again at the start of frost melting period, to observe segregated ice and to determine effects of frost action on water contents and densities of the subgrade. Plate bearing tests were performed prior to freezing and are being performed continuously from the start of the frost melting period in late March 1951 until the pavement returns to normal in the summer of 1951. Data from studies completed up to 1 June 1951 are presented in this report. The trend of the available data indicates that: (1) after a marked reduction in strength at the start of frost melting, regain in subgrade strength was generally continuing at a uniform rate as of 1 June, (2) variations in thickness of pavement and base at the test sections had no appreciable effect on depths of frost penetration.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Technical Report

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