Along NS trending road cut between Ç / ayyolu and incek, relatively thick
tuffite layer of the Hanç / ili formation has been exposed. It is alternating with other
lacustrine deposits such as clayey limestone, marl, siltstone and mudstone. These
units unconformably overlie the Mesozoic basement limestones of Akbayir
formation. The illite rich tuffite consists of glass shards tridymite, biotite, quartz
and plagioclase. It has a persistent areal extend and forms the foundation of the
residential buildings at several localities.
In this thesis, it is aimed to assess the engineering geological properties of
the tuffite layer and to investigate its suitability as a foundation material. In order
to accomplish this task, field studies and laboratory tests were conducted. Field
studies involve detailed site geological observation. Laboratory studies include
tests to investigate mechanical, physical and mineralogical properties of the
tuffite.
v
Analyses revealed very weak nature of tuffite with strength values
ranging between 0.1 MPa and 1.00 MPa. The tuffite is characterized with very
high effective porosity (43.3%) and very low dry and saturated densities (1.19
Mg/m3 and 1.62 Mg/m3, respectively). The slake-durability tests yield medium
durability. The durability index of tuffite is rated as very poor.
Considering index properties and the durability assessment it is concluded
that tuffite serves as a poor foundation material.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12610247/index.pdf |
| Date | 01 December 2008 |
| Creators | Fersoy, Cagla |
| Contributors | Doyuran, Vedat |
| 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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