Abstract:
RESULTS ARE PRESENTED FROM TESTS FOR HEIGHT OF CAPILLARY RISE ON EIGHT SAMPLES TYPICAL OF NATURALLY GRADED SOILS-FOUR GRAVELS, THREE SANDS AND ONE SILT. TESTS WERE CONDUCTED BY TWO DIFFERENT METHODS: (1) CAPILLARIMETER OR QUICK TEST INDIRECT METHOD; AND (2) OPEN SOIL FILLED TUBE OR LONG TIME TEST DIRECT METHOD. THE LATTER TESTS WERE CONTINUED FOR A PERIOD OF OVER ONE YEAR AND GAVE MUCH HIGHER VALUES OF CAPILLARY RISE FOR THE FINER SOILS THAN THE CAPILLARIMETER TESTS. OBSERVED RATES OF RISE IN THE OPEN TUBE TESTS DID NOT AGREE WITH THOSE COMPUTED FROM THE THEORETICAL EQUATION. THIS IS JUDGED AS DUE TO THE INCOMPATIBILITY BETWEEN CONDITIONS IN NATURE AND THE SIMPLIFYING ASSUMPTIONS NECESSARY FOR DERIVATION OF THE THEORETICAL EQUATION. /AUTHOR/
Supplemental Notes:
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