scholarly journals STABILIZATION OF CLAY SOILS USING FLY ASH

2019 ◽  
pp. 10-11
Author(s):  
Yeşim Sema Ünsever ◽  
Mamadou Lamine Diallo
Keyword(s):  
Fly Ash ◽  
Clay Soils

The Effect of Fly Ash on Lime Mortar on Elevated Temperature

2013 ◽  
Vol 684 ◽  
pp. 172-176
Author(s):  
Alireza Ghaffari ◽  
Amirreza Ghaffari
Keyword(s):  
Compressive Strength ◽  
Elevated Temperature ◽  
Fly Ash ◽  
Room Temperature ◽  
Clay Soils ◽  
Lime Mortar ◽  
Curing Period ◽  
Stone Dust ◽  
Swell Potential ◽  
Lime Stone

To enhance the mechanical and compressive strength of lime mortar(lime-sand ) the fly ash was added to the compound to improved the engineering performance of lime mixture .The addition of fly ash and lime stone dust to clay soils reduce their plasticity characteristics, swell potential and improve their compressive strength (Brooks et al. 2011) .Boardman et al (2001) observed that no significant pozzolonic activity appears to take place until 7 days of curing during their experiments at room temperature .In this research the effect of fly ash at different range from 30 to 70 percent of mix by varying lime percentage from 6 to 20 percent with thermodynamic parameters of their reaction was assessed in normal and raised temperature by curing compacted specimens in the laboratory .The compressive strength of fly ash and lime mixture are determined on curing period up to 28 days in normal state and one days on raised one .The Result portrayed that raised temperature highly boosted the compressive strength of the mix from 30 to 120 percent at different range of fly ash mixture with lime.

Recycling of fly ash in the consolidation of clay soils

1998 ◽  
Vol 24 (1) ◽  
pp. 1-6 ◽  
Author(s):  
M. Temimi ◽  
M.A. Rahal ◽  
M. Yahiaoui ◽  
R. Jauberthie
Keyword(s):  
Fly Ash ◽  
Clay Soils

Effect of cement and fly-ash on the geotechnical properties of expansive clay soils

2021 ◽  
Vol 140 (1) ◽  
pp. 1-13
Author(s):  
Redi Muci ◽  
Klodian Skrame ◽  
Oltion Fociro ◽  
Marco Mancini ◽  
Iolanda Gaudiosi ◽  
...  
Keyword(s):  
Fly Ash ◽  
Geotechnical Properties ◽  
Clay Soils ◽  
Expansive Clay

Stabilization Characteristics of Clays Using Class C Fly Ash

1998 ◽  
Vol 1611 (1) ◽  
pp. 46-54 ◽  
Author(s):  
Anil Misra
Keyword(s):  
Fly Ash ◽  
Chemical Properties ◽  
Clay Soils ◽  
Statistical Characteristics ◽  
Oxide Content ◽  
Physical And Chemical Properties ◽  
High Calcium ◽  
Class C ◽  
Physical And Chemical ◽  
And Chemical Properties

Coal-burning utilities using subbituminous coal from Wyoming typically produce fly ash, which, because of its high calcium oxide content, may be classified as Class C fly ash. These ashes are characterized by their self-cementing property and therefore can be used for soil improvement. Stabilization characteristics of clay soils blended with Class C fly ash were evaluated. Because fly ash is a by-product, uniformity of its physical and chemical properties is significant for quality control. The statistical characteristics of fly ash physical and chemical properties are obtained and compared with the data in literature. Fly ash is blended with several different clay soils of varying plasticity to study moisture-density relationships and strength behavior of stabilized soils. It is observed that the fly ash used in these experiments has a rapid hydration characteristic. Consequently, higher densities and strengths are achieved when the compaction is performed with little or no delay after the addition of moisture to clay-fly ash blends. Conversely, delayed compaction produces low densities and strength. In addition, it is observed that the stabilization characteristics are closely related to the soil mineral type and plasticity. Results also are presented for strength gain behavior with curing period for the various soil-fly ash blends.

scholarly journals RESEARCH OF CEMENT ADDITIVES INFLUENCE ON THE PROPERTIES OF SOILCRETE

2016 ◽  
Vol 7 (3) ◽  
pp. 140-145 ◽  
Author(s):  
Vaidas Marčiulaitis ◽  
Danutė Sližytė ◽  
Rimantas Mackevičius ◽  
Tatyana Zhilkina
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Laboratory Tests ◽  
Clay Soils ◽  
Jet Grouting ◽  
Fly Ash Utilization ◽  
Made In

The article analyses a possibility of replacing a part of cement with fly ash in jet grouting piles, because the received strength of cement treated grout is much higher than it is necessary for these piles. The paper presents the problems of fly ash utilization, overviews experimental and theoretical works and analyses laboratory tests on the samples of cement treated grout. The conducted experiments involved manufacturing cylindrical cement treated grout samples containing different additives when the diameter of the cylinder is 35 mm, and its height is 70 mm. The experiments on the samples comprising the additives of fly ash were made in sand and clay soils. 25% to 75% of cement was replaced with fly ash in cement treated grout samples tested under compressive strength following 7 days hardening in air.

scholarly journals Protection of environment by the use of fly ash in road construction

2013 ◽  
Vol 10 (1) ◽  
pp. 108-113
Keyword(s):  
Particle Size ◽  
Fly Ash ◽  
Mechanical Characteristics ◽  
Low Cost ◽  
Road Construction ◽  
Electrical Energy ◽  
The Other ◽  
Clay Soils ◽  
Forest Road ◽  
Great Availability

Fly ash is an important industrial by-product that comes from the combustion of coal, for the production of electrical energy. In our country, only a small percentage is used for the construction of technical projects, while the rest is stockpiled, causing serious problems. Because of its great availability and its low cost, further possibility of its usage should be investigated. In the present assignment, clay soils, natural and crushed sand-gravel were stabilized with different quantities of fly ash, for the creation of durable forest roads. From research, it has been found that stabilization with fly ash, improves the natural and mechanical characteristics of soils (plasticity, compressive strength and particle size distribution). As a result, the improvement of the forest road networks from one side and the economy in natural inert materials and the exploitation of fly ash from the other, the importance of such an intervention in the protection of the forest ecosystem and the natural environment in general are obvious.

scholarly journals STABILIZATION OF SUBGRADE SOIL USING CALCIUM LIGNOSULFONATE AND GRANITE DUST- A REVIEW

2021 ◽  
pp. 117-123
Author(s):  
N. Manikyala Rao ◽  
B.P.R.V.S Priyatham
Keyword(s):  
Fly Ash ◽  
Soil Stabilization ◽  
Mechanical Energy ◽  
Soil Characteristics ◽  
Clay Soils ◽  
Soil Types ◽  
Chemical Substances ◽  
Subgrade Soil ◽  
Chemical Soil ◽  
Mechanical Approach

India is a geographically diverse country with varied soil types in different places. As a result, stabilising techniques are employed to enhance those regions with low bearing capacity. Soil strength is improved using both mechanical and chemical stabilising techniques. In the mechanical approach, mechanical energy is employed (rollers, plate compactors, tempers, etc., depending on the choice or type of the soil) to enhance soil characteristics by compaction. Chemical Soil Stabilization is a chemical approach that involves blending and combining chemical additions to improve the soil’s engineering qualities. Chemical substances such as calcium lignosulfonate, granite dust, cement, and fly ash were added in. Although calcium lignosulfonate may stabilise a wide variety of soil types, it works best in soft soils and clay soils with moderate to medium flexibility. Granite dust is primarily used in clay soils with a lot of flexibility. KEY WORDS: Calcium lignosulfonate, Granite dust, soil, stabilization, subgrade

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