Expansive soils are one of the most serious problems which the foundation
engineer faces. Several attempts are being made to control the swell-shrink
behavior of these soils. One of the most effective and economical methods is to use
chemical additives. Fly ash and desulphogypsum, both of which are by-products of
coal burning thermal power plants, are accumulating in large quantities all over the
world and pose serious environmental problems. In this study, the expansive soil
was stabilized using the fly ash and desulphogypsum obtained from Ç / ayirhan
Thermal Power Plant. Fly ash and desulphogypsum were added to the expansive
soil from 0 to 30 percent. Lime was used to see how efficient fly ash and
desulphogypsum on expansive soil stabilization were, and was added to the
expansive soil from 0 to 8 percent. The properties obtained were chemical
composition, grain size distribution, consistency limits, swelling percentage, and
rate of swell. Fly ash, desulphogypsum, and lime added samples were cured for 7
days and 28 days, after which they were subjected to free swell tests. Swelling
percentage decreased and rate of swell increased with increasing stabilizer
percentage. Curing resulted in further reduction in swelling percentage and further increase in rate of swell. 25 percent and 30 percent fly ash and desulphogypsum
additions reduced the swelling percentage to levels comparable to lime stabilization.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/1119387/index.pdf |
| Date | 01 January 2004 |
| Creators | Cetiner, Sertan Isik |
| Contributors | Cokca, Erdal Erdal |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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