Effect of Fly Ash on Geotechnical Properties of Oil-Contaminated Soil

2020 ◽  
pp. 219-232
Author(s):  
Veena Jayakrishnan ◽  
Aiswarya Gracious ◽  
Anila C. Shaju
Keyword(s):  
Fly Ash ◽  
Contaminated Soil ◽  
Geotechnical Properties

scholarly journals Industrial Wastes in Soil Improvement

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
G. V. Rama Subbarao ◽  
D. Siddartha ◽  
T. Muralikrishna ◽  
K. S. Sailaja ◽  
T. Sowmya
Keyword(s):  
Fly Ash ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Cost Effective ◽  
Dry Weight ◽  
Soil Improvement ◽  
Geotechnical Properties ◽  
Point Of View ◽  
Industrial Wastes ◽  
Engineering Structures

Soil existing at a particular site may not be appropriate for construction of engineering structures. The present study made an attempt to enhance the geotechnical properties of a soil replaced with industrial wastes having pozzolanic value like rice husk ash (RHA) and fly ash (FA). Soil is replaced with RHA in 2%, 4%, and 6% to dry weight of soil. It is observed that soil replaced with 4% RHA is the optimum for the soil used in this study from geotechnical point of view. To know the influence of fly ash, soil is further replaced with 4% FA along with 4% RHA. It is found that results of soil replacement by both RHA and FA proved to be soil modification and not the improvement. Hence, a cost-effective accelerator like lime is used for further replacing the above soil-4%, RHA-4% FA mix. The optimum lime content is found to be 4%.

Optimum Dose Of Lime And Fly Ash For Treatment Of Hexavalent Chromium–Contaminated Soil

2006 ◽  
Vol 6 (1-2) ◽  
pp. 171-189 ◽  
Author(s):  
Konstantinos Kostarelos ◽  
Daniela Reale ◽  
Dimitris Dermatas ◽  
Ennio Rao ◽  
Deok Hyun Moon
Keyword(s):  
Fly Ash ◽  
Hexavalent Chromium ◽  
Contaminated Soil ◽  
Optimum Dose

scholarly journals Geotechnical Properties and Microstructure of Lime-Fly Ash-Phosphogypsum-Stabilized Soil

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Tebogo Pilgrene Mashifana ◽  
Felix Ndubisi Okonta ◽  
Freeman Ntuli
Keyword(s):  
Fly Ash ◽  
Expansive Soil ◽  
Basic Oxygen Furnace ◽  
Geotechnical Properties ◽  
Magnesium Silicide ◽  
Engineering Properties ◽  
Basic Oxygen ◽  
Basic Oxygen Furnace Slag ◽  
Phosphogypsum Waste ◽  
Furnace Slag

The use of industrial waste as a potential stabilizer of marginal construction materials is cost effective. Phosphogypsum and fly ash are industrial wastes generated in very large quantities and readily available in South Africa. In order to explore the potential stabilization of vastly abundant expansive soil using larger quantity phosphogypsum waste as a potential modifier, composites with a mixture of lime-fly ash-phosphogypsum-basic oxygen furnace slag were developed. However because of the presence of radionuclide, it was necessary to treat the phosphogypsum waste with mild citric acid. The effect of the acid treatment on the geotechnical properties and microstructure of expansive soil stabilized with phosphogypsum-lime-fly ash-basic oxygen furnace slag (PG-LFA-BOF) paste was evaluated, in comparison with the untreated phosphogypsum. Expansive soil stabilized with acid-treated PG-LFA-BOF paste exhibited better geotechnical properties; in particular, the high strength mobilized was associated primarily with the formation of various calcium magnesium silicide and coating by calcium silicate hydrate and calcium aluminate hydrate. The soil microstructure was improved due to the formation of hydration products. The stabilized expansive soil met the specification for road subgrades and subbase. Stabilization of expansive soils with phosphogypsum, fly ash, and basic oxygen fly ash does not only improve engineering properties of soil but also provides a solution in relation to disposal and environmental pollution challenges.

scholarly journals Physical, chemical, and geotechnical properties of coal fly ash: A global review

2019 ◽  
Vol 11 ◽  
pp. e00263 ◽  
Author(s):  
Arpita Bhatt ◽  
Sharon Priyadarshini ◽  
Aiswarya Acharath Mohanakrishnan ◽  
Arash Abri ◽  
Melanie Sattler ◽  
...  
Keyword(s):  
Fly Ash ◽  
Coal Fly Ash ◽  
Geotechnical Properties ◽  
Physical Chemical

scholarly journals Effect of fly ash on geotechnical properties and stability of coal mine overburden dump: an overview

2020 ◽  
Vol 2 (5) ◽  
Author(s):  
Tarun Kumar Rajak ◽  
Laxmikant Yadu ◽  
Sandeep Kumar Chouksey
Keyword(s):  
Fly Ash ◽  
Coal Mine ◽  
Geotechnical Properties ◽  
Overburden Dump

Synergistic effects of biochar and processed fly ash on bioavailability, transformation and accumulation of heavy metals by maize (Zea mays L.) in coal-mining contaminated soil

Chemosphere ◽  
2020 ◽  
Vol 240 ◽  
pp. 124845 ◽  
Author(s):  
Mehr Ahmed Mujtaba Munir ◽  
Guijian Liu ◽  
Balal Yousaf ◽  
Muhammad Ubaid Ali ◽  
Qumber Abbas ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Zea Mays ◽  
Fly Ash ◽  
Coal Mining ◽  
Contaminated Soil ◽  
Zea Mays L ◽  
Synergistic Effects

Investigation to some Preliminary Geotechnical Properties of Soft Clay Stabilized by Fly Ash Based Geopolymers

2020 ◽  
Vol 857 ◽  
pp. 259-265
Author(s):  
Jasim M. Abbas ◽  
Amer M Ibrahim ◽  
Abdalla M. Shihab
Keyword(s):  
Fly Ash ◽  
Specific Gravity ◽  
Soft Clay ◽  
Cost Effective ◽  
Geotechnical Properties ◽  
Experimental Program ◽  
Dry Density ◽  
Alkali Activation ◽  
Plastic Behavior ◽  
Maximum Dry Density

The civil engineering projects that includes soft clay within its activities has a serious concern of hazards, such hazards can be overcame by treating the existing soils by certain materials which are named as "stabilizers". The common materials that are highly used in this field are ordinary Portland cement, fly ash, lime and rice husk ash, etc. Each one of these stabilizers has its known shortcomings. The alkali activation of any alumina silicate source produces some kind of cost effective primary binding gel which is known as "Geopolymers". This study is devoted to investigate the role of liquid over fly ash ratio to some soil – FA based Geopolymers geotechnical properties. Such ratio is taken as 2.71, 3.167, 3.8 and 4.75 respectively within the experimental program and the investigated geotechnical properties are the specific gravity, liquid and plastic limit, compaction characteristics and California bearing ratio. The tests results showed that the maximum dry density decreased about 42 % at 2.71 liq/FA whereas this the specific gravity decreased 27 % at the same this ratio. In addition, the 3.8 and 4.75 of such limits revealed no plastic behavior due to the high presence of liquid.

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