Effect of Gradual increase of Temperature in Losing Molecules Water for Different Gypsum Soils

Kareem Sahab Taresh Al-Dabsaa, Abdul

	Effect of Gradual increase of Temperature in Losing Molecules Water for Different Gypsum Soils
Journal of Tikrit University For Agriculture Sciences
Article 1, Volume 13, Issue 1, 2013, Pages 275-281
Author
Abdul Kareem Sahab Taresh Al-Dabsaa
Abstract
To know the ability of Gypsum soils to losing the two water molecules (CaSO4.2H2O) in different temperature start from 40C° to 105C° for different Gypsum soils . Prepared the different samples from mixing lower Gypsum soil and higher Gypsum soil , taken from the surface soils horizon (Ap and C) to made Gypsum contents G1 (13.76%) , G2 (27.52%) , G3 (34.40%) , G4 (48.16%) , G5 (68.80%) The results shown the Gypsum contents G0 , G1 , G2 loosed of weight 47.59% , 46.95% , 48.59% respectively from samples weight after saturated in 75C° degree , and the Gypsum contents G3 , G4 , G5 , Gh shown losing in weight 49.35% , 49.71% , 50.16% , 51.21% respectively after saturation in same temperature . When the temperature continuous the losing weight continue in gypsum soils G0 , G1 , G2 to be 50.18% , 50.37% , 52.32% respectively from the weight after saturation in 105C° degree , and the Gypsum contents G3 , G4 , G5 , Gh losing weight 56.00% , 59.34% , 62.30% , 67.42% respectively from the weight after saturation in same degree . The results shown the water molecules being losing from (CaSO4.2H2O) to the Gypsum contents G3 , G4 , G5 , Gh in 75C° degree and higher until 105C° and the water molecules loss was 6.00% , 9.34% , 12.30% , 17.42% for the Gypsum contents G3 , G4 , G5 , Gh respectively in 105C° degree
Keywords
increase; temperature; soils

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