SWELLING CHARACTERISTICS OF PLASTIC SOIL WITH FINE SAND STABILIZATION

A HIGHLY PLASTIC SOIL, CLASSIFIED IN THE A-7-6 GROUP, WAS SELECTED FOR THIS STUDY, THE STABILIZER WAS FINE SAND. THE SWELLING MECHANISM AND FACTORS AFFECTING THE VALUES OF SWELL AND SWELL PRESSURE DEVELOPED BY COMPACTED CLAY UPON ACCESS TO WATER ARE DISCUSSED IN DETAIL. SWELLING CHARACTERISTICS WERE INVESTIGATED BY TWO TYPES OF TESTS, VIS . SWELL PRESSURE AND HEAVE TESTS. FOR THE HEAVE TESTS A SURCHARGE OF 1 PSI, EQUIVALENT TO THE WEIGHT OF AN 11-IN. PORTLAND CEMENT CONCRETE SLAB, WAS USED. THE RESULTS OF TESTS ON UNSTABILIZED CLAY SHOWED THAT THE FINAL VALUES OF SWELL AND SWELL PRESSURE WERE CRITICAL, WITH THESE VALUES, DAMAGE TO A PAVEMENT OVERLYING THIS SOIL COULD RESULT. UPON STABILIZING WITH FINE SAND, THE FINAL VALUES OF SWELL AND SWELL PRESSURE DECREASED AS THE PERCENTAGE OF SAND INCREASED . THE EFFECT OF SURCHARGE ON VOLUME CHANGE WAS INVESTIGATED BY TESTING CLAY SAMPLES AT OPTIMUM WATER CONTENT UNDER SURCHARGE EQUIVALENT TO 1, 2, AND 3 PSI. IT WAS FOUND THAT VOLUME CHANGES OF CLAY SAMPLES DECREASED WITH AN INCREASE IN SURCHARGE. THE EFFECT OF SIZE OF SAMPLE ON VOLUME CHANGE WAS INVESTIGATED BY USING TWO SIZES OF APPARATUS AND WAS FOUND TO BE NOT APPRECIABLE. /RRL/A/

• Supplemental Notes:
  • 77pp, 44fig, 11TAB, 2PHOT, 8REF
• Authors:
  • Charernnk, W
• Publication Date: 0

Media Info

• Serial:
  • Seato Grad Sch Eng Res Summ /Thailand/

Subject/Index Terms

• TRT Terms: Fine aggregates; Plastic soils; Plasticity; Pressure; Sand; Soil stabilization; Soils; Statistical sampling; Swelling; Tests; Volume changes
• Uncontrolled Terms: Heaving; Sample size; Stabilization; Surcharge
• Old TRIS Terms: Heave; Swell tests
• Subject Areas: Data and Information Technology; Geotechnology; Highways;

Filing Info

• Accession Number: 00230830
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 15 2004 1:52AM