00232777

Component

http://onlinepubs.trb.org...s/hrr/1969/294/294-003.pdf

CORES OBTAINED FROM SUCCESSFULLY SALT-STABILIZED ROADS WERE PRESENT TO YIELD SATISFACTORY RESULTS. THE CORES STUDIED CAME FROM ROADS IN MONROE, MICHIGAN; STEUBEN COUNTY, INDIANA; MONTPELIER, OHIO; ROADS COMPOSED OF BLAST-FURNACE SLAG FROM SOUTH GATE, MICHIGAN; AND ROADS COMPOSED OF GALENA STONE FROM WISCONSIN. THIN SECTIONS WERE STUDIED UNDER AN OPTICAL MICROSCOPE AND AN ELECTRON MICROSCOPE. THE FOLLOWING OBSERVATIONS WERE MADE FROM THE MICROSCOPE SLIDES: (1) THE CORES ARE VERY DENSE, MUCH DENSER THAN THE ORIGINAL MATERIAL, (2) SALT PARTICLES ARE OBSERVED AT HIGH MAGNIFICATION AND EVIDENTLY CONTRIBUTE TO BONDING, (3) CRACKS ARE PRESENTED WHICH COULD BE EVIDENCE OF CEMENTATION, (4) SECONDARY GROWTHS OF LIMESTONE AND SILICA APPEAR, (5) SOME REDUCTION IN THE SIZE OF SOME OF THE LIMESTONE PARTICLES APPEARED TO HAVE TAKEN PLACE, INDICATING THAT THE MATERIAL HAS ENTERED INTO A REACTION. THE INFERENCE DRAWN IS THAT MIGRATION HAS TAKEN PLACE AND THE CAUSE IS ATTRIBUTED TO CYCLING MOISTURE AND TEMPERATURE CONDITIONS. THIS THEORY WAS TESTED IN THE LABORATORY USING MATERIALS OF THE APPROXIMATE COMPOSITION TO BE FOUND IN THE FIELD. THEY WERE CYCLED UNDER MOISTURE AND TEMPERATURE CONDITIONS MORE SEVERE THAN BELIEVED TO BE ENCOUNTERED IN THE FIELD. WELL-HARDENED SYNTHESIZED CORES OF GOOD QUALITY RESULT FROM THE PROCEDURE DEVELOPED.

Paper sponsored by Committee on Soil-Sodium Chloride Stabilization and presented at the 48th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

01410233

pp 42-45

1969

Highway Research Record

Web

Figures (7)

Blast furnaces; Core samples; Electron microscopes; Limestone; Microscopes; Migration; Moisture content; Salts; Slag; Soil stabilization; Soil tests; Temperature

Optical microscopes

Geotechnology; Highways

TRIS, TRB

Mar 9 1970 12:00AM

• STABILIZATION OF BASE COURSE AGGREGATESS WITH ROCK SALT
• STABILIZATION OF SOILS WITH INORGANIC SALTS AND BASES: A REVIEW OF THE LITERATURE