Stabilization of an expansive artificial clay mixture with C/F type fly ash and sand

Date

2002-08-01

Author

Çokça, Erdal

Metadata

Show full item record

Item Usage Stats

137
views

0
downloads

Fly ash, which is an industrial by-product from coal-fired thermal power plants, is accumulating in large quantities in many countries. In this study the possible utilization of fly ash as a stabilizing agent for expansive soils is investigated. Two types of fly ash, classified as types F and C according to ASTM C 618 (ASTM, 1993), were employed together with sand to stabilize a highly expansive clay mixture. Classification tests and chemical composition of the materials as well as free swell, primary swell time and swell pressure of the test specimens were determined. Some of the specimens were also cured for 7 and 28 days before subjecting them to the tests. The results showed that samples treated with fly ash exhibited a decrease in free swell and swell pressure. The stabilization with type C fly ash was more effective. Increasing the curing time also improved the stabilization effect. With sand replacing fly ash, the reduction in swelling is enhanced. The specimen with 15% type C fly ash and 10% sand and with 28 days cure yielded the best performance.

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0036701681&origin=inward
https://hdl.handle.net/11511/77378

Journal

Geotechnical Engineering

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

Utilization of Yatagan Power Plant Fly Ash in Production of Building Bricks Önel, Öznur; TANRIVERDİ, MEHMET; ÇİÇEK, TAYFUN (2017-09-15) Fly ash is a by-product of coal combustion, which accumulates in large quantities near the coal-fired power plants as waste material. Fly ash causes serious operational and environmental problems. In this study, fly ash from Yatagan thermal power plant was used to produce light-weight building bricks. The study aimed to reduce the problems related to fly ash by creating a new area for their use. The optimum process parameters were determined for the production of real size bricks to be used in construction ...
Characterization of fly ashes from thermal power plants in Turkey Tangüler, Meltem; Meral, Çağla; Department of Civil Engineering (2015) Fly ash (FA) - a mainly amorphous, aluminosilicate fine powder- is the major by- product of coal-fired thermal power plants (TPP). FA is generated during the combustion of pulverized coal and collected in mechanical or electrostatic separators. FA is a widely used material in cement and concrete industry. According to the TPP technology, the characteristics of the burned coal and the operation conditions of the TPP; the characteristics of the FAs may vary considerably. The scope of this thesis is limited to...
Identification of waste management strategies and waste generation factors for thermal power plant sector wastes in Turkey Demir, Cansu; Yetiş, Ülkü; Ünlü, Kahraman (SAGE Publications, 2019-03-01) Thermal power plants are of great environmental importance in terms of the huge amounts of wastes that they produce. Although there are process-wise differences among these energy production systems, they all depend on the logic of burning out a fuel and obtaining thermal energy to rotate the turbines. Depending on the process modification and the type of fuel burned, the wastes produced in each step of the overall process may change. In this study, the most expected process and non-process wastes stemming ...
Oxidation of Low Chromium Steels in Dry and Moist Atmospheres Erdoğan, Metehan; Sultan, Abdelrahman; Karakaya, İshak (2017-01-01) P-5 (5%Cr) steel is used in the construction of high temperature industrial equipment that works in the flue gas environment because of its high corrosion resistance. However, there are studies reporting higher oxidation rates of Cr containing steels in moist environments when compared to oxidation in air. In order to understand the oxidation behaviour of P-5 steel, isothermal oxidation tests were performed in two different environments; air and flue gas composition of natural gas combustion (CO2+2H2O+7.52N...
Local air quality impacts due to downwash around thermal power plants: Numerical simulations of the effect of building orientation Kayın, Serpil; Tuncel, Süleyman Gürdal; Yurteri, Coşkun (1999-09-01) One of the primary adverse environmental impacts associated with power generation facilities and in particular thermal power plants is local air quality. When these plants are operated at inland areas the dry type cooling towers used may significantly increase ambient concentrations of air pollutants due to the building downwash effect. When one or more buildings in the vicinity of a point source interrupt wind flow, an area of turbulence known as a building wake is created. Pollutants emitted from relative...

Citation Formats

E. Çokça, “Stabilization of an expansive artificial clay mixture with C/F type fly ash and sand,” Geotechnical Engineering, pp. 93–99, 2002, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0036701681&origin=inward.