Effects of fly ash and desulphogypsum on the geotechnical properties of çayırhan soil

Download

index.pdf

Date

2005

Author

Baytar, Ali Özgür

Metadata

Show full item record

Item Usage Stats

338
views

188
downloads

Collapse in soils occur when a partially unstable, partially saturated open fabric under high enough stress causing a metastable structure with large soil suction, or in the presence of a bonding or cementing agent, is allowed to free access to additional water. Such excess water reduces soil suction and weakens or destroys the bonding, this causing shear failure at the interaggregate or intergranular contacts, consequently, the soil collapses. In this study, the collapsible soils found in the Çayirhan Thermal Power Plant area has been stabilized by using the desulphogypsum, and fly ash obtained from the Çayirhan Thermal Power Plant. An extensive laboratory testing program has been undertaken to provide information on the geotechnical properties of collapsible soil treated by Çayirhan fly ash and desulphogypsum. At the end of the test program, it has been seen that the collapsible soil (compacted) can be stabilized by adding fly ash and desulphogypsum. Although a significant change on the collapse potential was not observed when fly ash and desulphogypsum added samples were compared with compacted sample without stabilization, but there is an increase in unconfined compressive strength values due to stabilization.

Subject Keywords

Foundations.

URI

http://etd.lib.metu.edu.tr/upload/12606083/index.pdf
https://hdl.handle.net/11511/15096

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Effects of fly ash and desulphogypsum on the strength and permeability properties of Çayırhan soil Şahin, Murat; Çokça, Erdal; Department of Civil Engineering (2005) Çayırhan soil is a collapsible soil. Collapsible soils are generally unsaturated, low-density soils with high voids between grains where the binding agents are sensitive to saturation. When exposed to water, binding agents break, soften or dissolve such that the soil grains shear against each other and reorient in denser configurations. This reconfiguration causes a net decrease in the soil mass, resulting in large and often unexpected settlements, which can totally destroy roads, underground utilities, and...
Origin and significance of a quartz tourmaline breccia zone within the central anatolian crystalline complex, Turkey Demirel, Serhat; Göncüoğlu, Mehmet Cemal; Department of Geological Engineering (2004) The aim of this study is to investigate the petrography, geochemistry and evolution of quartz-tourmaline-rich rocks occurring in a wide breccia zone within the Late Cretaceous Kerkenez Granitoid (Central Anatolian Crystalline Complex (CACC), Turkey). The approximately 40-m wide main breccia zone has a NE-SW trend and is characterized by intense cataclastic deformation. The breccia zone can be traced several kilometers towards the west and generally occurs as tourmaline-filled faults and 1mm-30cm-thick veins...
Flow and nutrient dynamics in a subterranean estuary (Waquoit Bay, MA, USA): Field data and reactive transport modeling Spiteri, Claudette; Slomp, Caroline P.; Charette, Matthew A.; Tuncay, Kağan; Meile, Christof (Elsevier BV, 2008-07-15) A two-dimensional (2D) reactive transport model is used to investigate the controls on nutrient (NO3-, NH4+, PO4) dynamics in a coastal aquifer. The model couples density-dependent flow to a reaction network which includes oxic degradation of organic matter, denitrification, iron oxide reduction, nitrification, Fe2+ oxidation and sorption of PO4 onto iron oxides. Porewater measurements from a well transect at Waquoit Bay, MA, USA indicate the presence of a reducing plume with high Fe2+, NH4+, DOC (dissolved...
Effect of coarse aggregate size on interfacial cracking under uniaxial compression Akcaoglu, T; Tokyay, Mustafa; Celik, T (2002-12-01) The effects of aggregate type and size are important parameters in the formation of interfacial transition zone (ITZ) structure and subsequently in the failure process of concrete. The influence of surface, rigidity and size of aggregates and water/cement (w/c) ratio of the matrix on bond strength at the ITZ and the interrelationship between the bond and the matrix in the failure process of concrete under uniaxial compression were studied. For this purpose a series of experiments were designed and carried o...
Vibration analysis of cracked beams on elastic foundation using Timoshenko beam theory Batıhan, Ali Çağrı; Kadıoğlu, Fevzi Suat; Department of Mechanical Engineering (2011) In this thesis, transverse vibration of a cracked beam on an elastic foundation and the effect of crack and foundation parameters on transverse vibration natural frequencies are studied. Analytical formulations are derived for a beam with rectangular cross section. The crack is an open type edge crack placed in the medium of the beam and it is uniform along the width of the beam. The cracked beam rests on an elastic foundation. The beam is modeled by two different beam theories, which are Euler-Bernoulli be...

Citation Formats

A. Ö. Baytar, “Effects of fly ash and desulphogypsum on the geotechnical properties of çayırhan soil,” M.S. - Master of Science, Middle East Technical University, 2005.