Accession Number:

AD0626654

Title:

THERMAL STABILIZATION OF SOILS, EXPLORATORY LABORATORY STUDIES.

Descriptive Note:

Rept. for Oct 63-Apr 64.

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS

Personal Author(s):

Report Date:

1965-11-01

Pagination or Media Count:

53.0

Abstract:

An exploratory laboratory investigation was conducted in which attempts were made to stabilize five soils of widely varying composition by thermal methods. Three additives cryolite, borax, and glass were tested as fluxing agents. Unconfined compressive strengths of fired samples were determined on both dry and soaked specimens. Reactions occurring in the soils without additives and in the soil-additive combinations were determined by X-ray diffraction analysis. Test results indicate that the type of additive needed to achieve stabilization at a significantly lower temperature than would otherwise be necessary is dependent on the composition of the soil. Soils with high clay contents tend to be stabilized at lower temperatures than those containing appreciable amounts of quartz. Additives which react with the silicate minerals in the soil appear to lower the stabilization temperature to a greater extent than those which simply melt when heated and resolidify when cooled. It was concluded that soil stabilization by thermal methods can be achieved on almost any soil provided it is heated to a high enough temperature approximately 1800 F to cause glass formation however, economical methods of handling, heating, and placing the material need to be developed. Author

Subject Categories:

  • Soil Mechanics
  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE