COMPRESSIBILITY AND STRENGTH OF COMPACTED DREDGINGS.

SEVERAL SERIES OF LABORATORY TESTS WERE PERFORMED ON THREE SAMPLES OF POLLUTED DREDGINGS TO EVALUATE THEIR COMPACTION, COMPRESSIBILITY, AND STRENGTH CHARACTERISTICS.THE COMPRESSIBILITY DATA ARE PLACED INTO PERSPECTIVE BY COMPARISONS WITH SIMILAR DATA FROM THREE REFERENCE SOILS, AND THE COMPACTION AND STRENGTH CHARACTERISTICS ARE COMPARED TO DATA REPORTED FOR A VARIETY OF SLIGHTLY ORGANIC SOILS.THE COMPRESSIBILITY OF THE DREDGINGS IS STRONGLY RELATED TO DRY DENSITY, AND THE SHEAR STRENGTH OF COMPACTED DREDGED MATERIAL IS SUBSTANTIALLY HIGHER THAN THAT OF HYDRAULICALLY-PLACED MATERIALS OF A SIMILAR NATURE.IN ADDITION TO THE ASSOCIATED BENEFITS OF LOWER SETTLEMENTS AND HIGHER BEARING CAPACITIES FOR A DREDGING LANDFILL, THE INCREASED DENSITY OBTAINED BY COMPACT ION OFFERS THE POSSIBILITY OF EFFECTIVELY INCREASING THE CAPACITY OF A GIVEN DISPOSAL AREA BY AS MUCH AS 50 PER CENT.(A.).