EFFECT OF FREEZE-DRYING ON THE SURFACE PROPERTIES OF SOILS AS MEASURED BY THE HEAT OF IMMERSION

[摘要] Theintegralheatofimmersionwasdeterminedforthreetexturalclassesofsoilswhichhadbeenfreeze-dried,air-dried,oven-dried,alternatelyfrozenandthawedandthenfreeze-dried,alternatelyfrozenandthawedandthenair-dried,alternatelyfrozenandthawedandthenoven-dried,andfreeze-driedandthenoven-dried.Therewerehighlysignificantdifferencesintheheatofimmersionasaresultoftexture.Thesignificantdifferencesfoundinthevariousdryingtreatmentscouldonlybeattributedtomoisturecontentatthetimeofimmersion.Thephysicaleffectofthefreeze-dryprocessistransientanditdoesnotaltertheinherentsoilpropertieswithrespecttoclodformation.

[学科分类] 农业科学（综合）