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has been cited by the following article:

• TITLE: Soil-Water Charateristics of Tropical Clay Soil under High and Low Suction Conditions

  AUTHORS: Bamitale Dorcas Oluyemi-Ayibiowu, Taiwo Olawale Akinleye, Olaolu George Fadugba, Ayodeji Stanley Olowoselu

  KEYWORDS: Soil-Water Characteristics, Tropical Clay Soil, Compaction Water Content, Compactive Efforts, Soil-Water Characteristics Curve

  JOURNAL NAME: Journal of Geoscience and Environment Protection, Vol.8 No.11, November 23, 2020

  ABSTRACT: Tropical clay soil was compacted at different moisture conditions (dry, wet and optimum) and compactive efforts (Reduced proctor, Standard proctor, West African standard and Modified proctor). Experimental Soil-Water Characteristics (SWC) of the soil was derived using the pressure plate extractor equipment and SWC Curves (SWCC) plotted as gravimetric water content versus logarithm of matric suction. The Air Entry Values (A.E.V) obtained from experimental work ranged from 21 kPa to 59 kPa and compared favourably well with those estimated from predictive models with values of 23 kPa to 52 kPa. Specimens compacted with greater compactive effort (Modified proctor) and at optimum moisture content produced the largest air entry value of 59 kPa and reduced air voids. Changes observed in the shape of the SWCC were consistent with changes in pore size which occurred by varying compaction conditions. The shape of the soil-water characteristics curve was found to depend on the soil structure, compactive water content and compactive effort and not solely on the percentage of fine particles.