REACTIONS IN PORTLAND CEMENT-CLAY MIXTURES, PHASE 3-SOILS: PROFILE CHARACTERISTICS AND REACTIONS WITH PORTLAND CEMENT

A DETAILED STUDY IS PRESENTED OF THE CHEMICAL AND MINERALOGICAL COMPOSITIONS AND PHYSICAL PROPERTIES OF THREE COMMON VIRGINIA SOILS. THE PROPERTIES OF THESE SOILS WERE INVESTIGATED AS WELL AS REACTIONS OCCURRING BETWEEN PORTLAND CEMENT AND THESE SOILS. THE FOLLOWING THREE TYPES OF SOIL WERE CHOSEN FOR THE STUDY: (1) A LIMESTONE DERIVED SILTY CLAY, (2) A BASIC INTRUSIVE RESIDUUM, AND (3) A RESILIENT MICACEOUS SOIL. AFTER SAMPLES WERE TAKEN AND TESTING PROCEEDED, IT WAS DECIDED TO ALSO INCLUDE THE FOLLOWING OBJECTIVES: (1) STUDY THE RELATIONSHIPS BETWEEN PARENT MATERIALS AND THEIR DERIVED SOILS, (2) DETERMINE ANY CHANGES IN PHYSICAL AND CHEMICAL PROPERTIES DOWN THE SOIL PROFILES, (3) STUDY THE REACTION ACCOMPANYING CEMENT STABILIZATION OF SOILS, AND (4) DETERMINE THE SOIL FACTORS INFLUENCING STRENGTH DEVELOPMENT IN SOIL-CEMENT MIXTURES. THE FREDERICK SOIL INVESTIGATED WAS FINE GRAINED THROUGH THE ENTIRE PROFILE BECAUSE THE SOIL WAS DERIVED FROM FINE GRAIN IMPURITIES IN UNDERLYING LIMESTONE. THE IREDELL AND LLOYD SOILS INVESTIGATED CONTAINED SUBSTANTIAL COARSE GRAINED MATERIALS. BECAUSE THEY WERE DERIVED FROM RESISTENT COARSE GRAINED METAMORPHIC ROCKS. THE FREDERICK AND LLOYD SOILS CONTAINED FEW UNSTABLE PRIMARY MINERALS BECAUSE THE STRONG LEACHING AND GOOD DRAINAGE CONDITIONS AFFECTED SOIL FORMATION. BECAUSE OF THE LEACHING AND DRAINAGE CONDITIONS, THE FREDERICK AND LLOYD SOILS WERE DEEPLY WEATHERED AND THE IREDELL HAD A SHALLOW SOIL PROFILE. ALL THREE SOILS HAD SIMILAR GROSS CLAY MINERALOGIES, BUT THE MAJOR CLAY MINERALS IN EACH SOIL WERE DIFFERENT AND WERE RELATED TO THE UNDERLYING ROCK TYPE. THE SOIL SAMPLES CONTAINING LARGE AMOUNTS OF CLAY HAD LOW MAXIMUM DRY DENSITIES, HIGH OPTIMUM MOISTURE CONTENTS, AND HIGH PLASTICITY INDICES DUE TO THE HYDROPHYLLIC NATURE OF MANY OF THE MATERIALS IN THOSE SAMPLES. DUE TO THE COHESIVE NATURE OF THE MATERIALS, CLAY RICH SOIL SAMPLES HAD HIGH UNCONFINED COMPRESSIVE STRENGTHS.

  • Supplemental Notes:
    • 110 Pp, 29 FIG, 14 TAB, 53 REF, 3 APP
  • Corporate Authors:

    Virginia Highway Research Council

    Charlottesville, VA  USA 
  • Authors:
    • Plaster, R W
  • Publication Date: 1979

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 110 p

Subject/Index Terms

Filing Info

  • Accession Number: 00232792
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 9 1970 12:00AM