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Stabilization of Soil Through Chemical Alteration. By Josh Oliver and Fitsum Tesfa. Expansive soil. Soil obtain in Plano, Texas. First Step. Oven dried for 24hrs at 160 degree. The oven dried soil was crushed After soil was crushed it was then pulverized.
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Stabilization of Soil Through Chemical Alteration By Josh Oliver and Fitsum Tesfa
Expansive soil • Soil obtain in Plano, Texas
First Step • Oven dried for 24hrs at 160 degree
The oven dried soil was crushed • After soil was crushed it was then pulverized
Classification of soil using mechanical analysis • Sieve analysis was performed on soil for 10 to 15 min • Depending on the particle size ,we concluded the ratio of gravel, sand, and clay and silt the soil contained
Classification of Soil using mechanical analysis • Hydrometer analysis, performed using the hydrometer bulb • The main idea of this experiment was to determine particulates sizes that are smaller than 0.075mm in diameter
Treatment of Soil • Chemical additive were lime and cement • Two different ratios were added to soil • 3%lime, 3%cement • 4% lime, 4%cement
Dynamic & static compression • These two types of compression are used in the preparation of soil samples for testing in the swell potential and unconfined compression test
One dimensional swelling test Swelling test graph
Shrinkage test graph Soil test for linear shrinkage 4% lime, 4% cement 3% lime, 3% cement control
Soil samples for Unconfined Compression Test • Soil sample stayed in moisture room at 100% humidity for 7days • UCT is than ran on samples
Unconfine Compression Test Pressure endured before failure
Conclusion • Soil treated or chemically altered with a 4% lime-4% cement proved to be more stable as indicated by the test performed. • The 3% lime-3% cement treatment increased stability but not substantially compared to the 4% ratios. • Both treatments proved stronger and more stable than the control. • This research proved that lime and cement additives improved the overall qualities and performance of the soil. • Research in this field is proving invaluable to stabilization there by improving long term viability of structures.
Acknowledgments • I would like to extend a special thanks to Dr. Puppala, AravindPedarla, and Ranjan Rout for expertise and assistance rendered that provided me with invaluable experience also recognizing Dr. Yazdani, Dr. Daza, Dr. Weatherton, Minh Le, the University of Texas at Arlington Civil engineering Dept., University of Texas at Arlington and the National Science Foundation.
