MUD. ORIGIN, TYPE AND PROPERTIES OF SOME GEOLOGIC FORMATIONS

THE TYPES OF MUD, GENERALLY OF KAOLINITIC CHARACTER, WHICH ARE FOUND IN OUR REGIONS CAN BE DEFINED AS COMPLEXES WHOSE PHYSICO-MECHANICAL PROPERTIES RESULT FROM AN ASSOCIATION OF THE FOLLOWING PHASES' SANDY /LESS THAN MU/, SILTY /2 TO 20 MU/, PRECOLLOIDAL /0.2 TO 2 MU/, FINE PRECOLLOIDAL /0.2 TO 0.06 MU/, COLLOIDAL /MORE THAN 0.06 MU/, ORGANIC, LIQUID /WATER ABSORBTION/. THE STUDY OF MUD, WITH THE AID OF A PUNCHED CARD CODE, IS AIMED AT ESTABLISHING CORRELATIONS BETWEEN TEST DATA AND INDICATIONS OF GEOTECHNICAL BEHAVIOUR. THE AUTHOR PROPOSES A PLAN OF STUDY BASED ESSENTIALLY ON SEDIMENTOLOGY. IT COMMENCES WITH CORE-DRILLING ACCORDING TO SOUNDINGS AGREED WITH THE ROAD ENGINEER, AND MEASUREMENTS IN SITU OF PH AND IF POSSIBLE RH. THE DETERMINATION OF MOISTURE CONTENT AND ORGANIC MATERIALS, THE IDENTIFICATION AND SEMI-QUANTITATIVE ASSESSMENT OF THE DIFFERENT MINERALS, AND THE USUAL SOIL MECHANICS TESTS, ARE THEN CARRIED OUT IN THE LABORATORY. FOR GRADING MEASUREMENTS THE AUTHOR RECOMMENDS A SEDIMENTOLOGY ANALYSIS EFFECTED BY THE USE OF A SHORTENED ANDREASSEN PIPETTE, WHICH PERMITS MEASUREMENTS DOWN TO 0.06 MU. IT IS ESSENTIAL TO KNOW THE AMOUNT OF THE COLLOIDAL FRACTION WHICH IS OFTEN ALLIED TO THE AMOUNT OF EXPANDING MONTMORILLONITE, AND TO THE ORIGIN OF THYXOTROPIC PHENOMENON. THESE LAST CAN ALSO RESULT FROM THE PRESENCE OF ORGANIC MATERIAL OR FROM DESALINISATION. AT NORMAL SALINITY MUD CLAYS ARE FLOCCULATED. /LCPC/RRL

• Authors:
  • Riviere
• Publication Date: 1965-5

Media Info

• Serial:
  • Journees De Geologie A Rouen /France/

Subject/Index Terms

• TRT Terms: Analysis; Colloids; Core samples; Drilling; Field tests; General surface features of the earth; Grading (Earthwork); Kaolinite; Moisture content; Mud; Organic content; pH value; Properties of materials; Soil mechanics
• Uncontrolled Terms: Grading; Pipette analysis
• Old TRIS Terms: Colloidal phenomena; Core drilling; Geologic formations; Insitu methods; Organic content (Soil); Origin /natural deposits/; Rh value
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00228712
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Report/Paper Numbers: 10pp
• Files: TRIS
• Created Date: Jun 1 1994 12:00AM