PERMEABILITY AND DRAINAGE CHARACTERISTICS OF DREDGINGS.

R. J. KRIZEK, J. S. JIN, A. M. SALEM

Research output: Contribution to journalArticle

Abstract

THE DEWATERING OF DISPOSAL AREAS COMPOSED OF POLLUTED MAINTENANCE DREDGINGS IS DIRECTLY RELATED TO THE PERMEABILITY AND DRAINAGE CHARACTERISTICS OF THESE MATERIALS, BUT RELATIVELY LITTLE QUANTITATIVE DATA REGARDING THESE PROPERTIES IS AVAILABLE.THIS STUDY SYNTHESIZES THE RESULTS DETERMINED FROM SEVERAL DIFFERENT TYPES OF LABORATORY TESTS ON A VARIETY OF DIFFERENT DREDGINGS, AND THE COEFFICIENT OF PERMEABILITY IS FOUND TO DECREASE FROM ABOUT 10 /SUP MINUS4/ TO 10/SUP MINUS9/ CM/SEC AS THE VOIR RATIO DECREASES FROM APPROXIMATELY 10 TO 0.6; DATA FROM TWO FIELD INFILTRATION TESTS INDICATE PERMEABILITY VALUES ON THE ORDER OF 10/SUP MINUS4/ TO 10/SUP MINUS5/ CM/SEC FOR MATERIALS THAT YIELDED LABORATORY VALUES OF ABOUT 10/SUP MINUS7/ TO 10/SUP MINUS8/ CM/SEC.THE ELECTROOSMOTIC COEFFICIENT OF PERMEABILITY IS FOUND TO BE IN THE ORDER OF 3X10/SUP M/ MI/SUP NUS5/ CM/SUP 2//VOLT-SEC, WHICH IS ABOUT ONE-HALF THE VALUE USED FOR A LARGE VARIETY OF SOILS.A PARTIAL VACUUM SERVES TO INCREASE SUBSTANTIALLY THE DEWATERING RATE AS COMPARED TO DRAINAGE CHARACTERISTICS OF POLLUTED MAINTENANCE DREDGINGS ARE SEEN TO BE COMPARABLE TO THOSE FOR MANY FINE-GRAINED, ORGANIC SOILS.(A).

Original languageEnglish (US)
Journal[No source information available]
StatePublished - Jan 1 1975

ASJC Scopus subject areas

  • Engineering(all)

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