الفهرس 
Introduction
Chemical AnalysisOnly 14 pages are availabe for public view
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Abstract
Highly swelled soils are considered lacked soils due to their bad chemical and physical properties. Reducing their swelling is a substantial goal. Using different conditioners to reduce high swelling should be checked. On the other hand, increasing swelling of height texture soils is a highly considered aim to improve their physical properties. The present work aims at illustrating the different soil properties that affect the kinetic swelling characteristics of some selected Egyptian soils. Studying the effect of different soil conditioners as-composts, gypsum, ferric hydroxide and polymers (polyacrylamid and aqua kept) on kinetic of swelling of the selected Egyptian soils. With this respect, seven soil profiles were selected according to the expected variations in the properties which may affect their swelling. Namely; lacustrine soil from south Baltim, Marine soil from Baltim, fertile alluvial soils from Disouq, calcareous soil from Maruit, sandy soil from Nubaria, alluvial saline soil from Hamool and sodic soil from Messer. The seven soil profiles were morphologically, standard, in situe. Disturbed soil samples were taken according to the vertical morphological variations within every profile. The disturbed samples were chemically analysed for soluble cations and anions, total soluble salts, pH, calcium carbonate, organic matter, cation exchange capacity, exchangeable cations and total polysaccharides. They were also physically analysed for particle size distribution, water stable aggregates, specific surface area and saturated hydraulic conductivity. Kinetic of swelling was studied in all the sampled soil profiles. The Vacel’yev PNG instrument was used to follow the processes of swelling. The relationship between the studied soil parameters and the soil swelling factor (Sf) was evaluated statistically by considering the horizon samples individually without regard to their position in soil profiles. The relative contribution of each causal factor on soil swelling factor (Sf) was also elucidated.