Effect of Curing Period on the Geotechnical Properties of Lime-Treated Organic Soils

2021 ◽  
pp. 41-51
Author(s):  
Annie Joy ◽  
Sruthy Babu ◽  
Benny Mathews Abraham ◽  
A. Sridharan
Keyword(s):  
Geotechnical Properties ◽  
Organic Soils ◽  
Curing Period

A Review to Develop new Correlations for Geotechnical Properties of Organic Soils

2021 ◽  
Author(s):  
Ahmed ElMouchi ◽  
Sumi Siddiqua ◽  
Dharma Wijewickreme ◽  
Herbert Polinder
Keyword(s):  
Geotechnical Properties ◽  
Organic Soils

scholarly journals Effect of Calcium Chloride on Geotechnical Properties of Black Cotton Soil Ramya

2018 ◽  
Vol 2 (1) ◽  
Keyword(s):  
Calcium Chloride ◽  
Liquid Limit ◽  
Geotechnical Properties ◽  
Engineering Properties ◽  
Black Cotton Soil ◽  
Dry Density ◽  
Unconfined Compression ◽  
Maximum Dry Density ◽  
Treated Soil ◽  
Curing Period

The objective of the present study was to understand the effect of calcium chloride on geotechnical properties of black cotton soil. Black cotton soil collected from Siraguppa taluk, Bellary. It was subjected to various concentrations of calcium chloride viz. 0.1 N, 0.5 N, 1.0 N, 2.0 N and 4.0 N. Attempt was made to understand the effect of calcium chloride on index properties and engineering properties of black cotton soil. It was observed that the values of liquid limit, plastic limit and plasticity index of the soil treated with calcium chloride was decreasing with increase in concentration. Further the treated soil was investigated for compaction test. It was observed that the maximum dry density of the soil was increasing at higher concentrations. However, no remarkable changes were observed in the values of optimum moisture content with increase in concentration of calcium chloride. The laboratory investigation was made to obtain the unconfined compression strength (UCS) of treated soil. The soil was cured for 1 day, 7, 14 and 28 days. It was observed that the values of UCS were increasing with increase in concentration at any curing period. The soil was further tested to obtain the effect of calcium chloride on permeability of treated soil. It was observed that the permeability is increasing with increase in concentrations of 0 N, 0.5 N, and 4.0 N.

Stabilization of Artificial Organic Soil at Room Temperature Using Blended Lime Zeolite

2013 ◽  
Vol 723 ◽  
pp. 985-992 ◽  
Author(s):  
Felix Ngee Leh Ling ◽  
Khairul Anuar Kassim ◽  
Ahmad Tarmizi Abdul Karim ◽  
Tze Wei Chan
Keyword(s):  
Room Temperature ◽  
Organic Soil ◽  
Pozzolanic Reaction ◽  
Organic Content ◽  
Organic Soils ◽  
Zeolite A ◽  
Reaction Products ◽  
Lime Stabilization ◽  
Curing Period ◽  
Strength Increment

Organic content in soil is believed to inhibit formation of reaction products in lime stabilization which resulted in low gain of strength when dealing with organic soils. Zeolite, a kind of pozzolan with high CEC capacity is proposed to be use in this study in order to improve lime stabilization of organic soil. The effectiveness of blended lime zeolite in stabilization of organic soils was investigated by using two types of artificial organic soils with predetermined organic contents. Artificial organic soils were formed by mixing inorganic soil (commercial kaolin) with organic matter (commercial humic acid) at specific ratio. Initial consumption of lime for organic soils was determined in order to determine the minimum percentage of stabilizer required for each soil. Potential influencing factors that might affect the strength such as organic contents, contents of stabilizer, and curing periods were studied. The findings of the study showed that high organic contents and low lime contents resulted in lower gain of strength. However, it is found that slight replacement of lime with zeolite works well with low organic soil at long curing period which resulted in highest strength among all the mixes. Overall, longer curing periods will increase the strength of the soil in the order of 56 days > 28 days > 7 days. Nevertheless, the percentage of strength increment over curing periods is linear with the lime contents, which proved that lime is required for pozzolanic reaction.

Ultrastructure of the soil fungus, Geomyces pannorus

1984 ◽  
Vol 42 ◽  
pp. 738-739
Author(s):  
J. A. Traquair ◽  
E. G. Kokko
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Fine Structure ◽  
Low Temperatures ◽  
Soil Fungus ◽  
Organic Soils ◽  
Anatomical Studies ◽  
Transmission Electron ◽  
Electron Microscopical ◽  
Scanning Electron

With the advent of improved dehydration techniques, scanning electron microscopy has become routine in anatomical studies of fungi. Fine structure of hyphae and spore surfaces has been illustrated for many hyphomycetes, and yet, the ultrastructure of the ubiquitous soil fungus, Geomyces pannorus (Link) Sigler & Carmichael has been neglected. This presentation shows that scanning and transmission electron microscopical data must be correlated in resolving septal structure and conidial release in G. pannorus.Although it is reported to be cellulolytic but not keratinolytic, G. pannorus is found on human skin, animals, birds, mushrooms, dung, roots, and frozen meat in addition to various organic soils. In fact, it readily adapts to growth at low temperatures.

The yield of perennial grass stands on drained organic soils of Steppe

2016 ◽  
Vol 1 (90) ◽  
pp. 92-97
Author(s):  
I.T. Slusar ◽  
V.A. Serbenyuk ◽  
A.N. Gera ◽  
A.P. Solyanik ◽  
A.A. Tarasenko
Keyword(s):  
Zinc Sulphate ◽  
Foliar Application ◽  
Perennial Grass ◽  
Mineral Fertilizer ◽  
Dry Weight ◽  
Research Area ◽  
Organic Soils ◽  
Growth Promoters ◽  
Cobalt Sulfate ◽  
The Impact

Research on the impact of the introduction of micro fertilizers and growth promoters on a background of mineral fertilizer and without N90R45К120 spent on old peat in shallow carbonate floodplain r.Supiy, Yahotyn Kyiv region. Power peat horizon about 60-70 cm, 7,4-7,6 pH of the aqueous extract, stupas schedule 56-60%, density 0,49-0,52 assembly soil, total nitrogen content (%) - 1.9; gross forms of phosphorus - 0,4, potassium 0.2, 20% lime. In experiments studying biological rehoplant, radustym, Biolan, emistim, Jets, humisol, plantafol, radyfarm and micronutrients: copper, boric acid, manganese sulphate, zinc sulphate, potassium humates. Treatment drugs conducted in the spring by spraying mixtures. Space research area of 60 m2, three-time repetition. It is established that the use of growth stimulants and micronutrients in the background N90R45К120 provided the highest yield mixtures of years, against making BIOLan - 9.9 t / ha Radyfarmu - 9.6 t / ha Radostymu 9.3 t / ha dry weight. In areas for making other preparations were intermediate yield growth rates - 0.5 - 2.0 t / ha dry weight. Also good gains herbage yields obtained by making all kinds of micronutrients and growth stimulants in the background without making makrodobryv which was within 5.3 - 6.9 t / ha to control without fertilization - 4.5 t / ha dry weight. In deep peat copper fertilizer (25 kg / ha of copper sulphate or 5 kg / ha pirytnoho cinders) in all zones should be making every 3-4 years, and zinc, cobalt and molybdenum advisable to make time for the growing season, spring, by foliar application in such numbers: ammonium molibdenovokyslyy - 0.3 kg / ha; cobalt sulfate - 3 kg / ha zinc sulphate 0.5 kg / ha or placers these salts should be mixed with major fertilizer.

Geotechnical Properties of Tidal Flat Muds: Responses to Tangential and Normal Stresses

2011 ◽  
Author(s):  
Bernard P. Boudreau ◽  
Bruce D. Johnson ◽  
Paul S. Dill
Keyword(s):  
Tidal Flat ◽  
Geotechnical Properties ◽  
Normal Stresses

Studies of Phosphorus Availability in Organic Soils

1958 ◽  
Vol 22 (4) ◽  
pp. 336-339 ◽  
Author(s):  
J. E. Larsen ◽  
G. F. Warren ◽  
Ruble Langston
Keyword(s):  
Phosphorus Availability ◽  
Organic Soils

Studies on the Leaching of Applied Labeled Phosphorus in Organic Soils

1958 ◽  
Vol 22 (6) ◽  
pp. 558-560 ◽  
Author(s):  
J. E. Larsen ◽  
Ruble Langston ◽  
G. F. Warren
Keyword(s):  
Organic Soils

Effect of Adding Zeolitic Tuff on Geotechnical Properties of Lime-Stabilized Expansive Soil

2021 ◽  
Author(s):  
Samer R. Rabab’ah ◽  
Madhar M. Taamneh ◽  
Hussein M. Abdallah ◽  
Osama K. Nusier ◽  
Laith Ibdah
Keyword(s):  
Expansive Soil ◽  
Geotechnical Properties ◽  
Zeolitic Tuff

scholarly journals Evaluation of organic carbon stocks in mineral and organic soils in Lithuania

2021 ◽  
Author(s):  
Kęstutis Armolaitis ◽  
Iveta Varnagirytė‐Kabašinskienė ◽  
Povilas Žemaitis ◽  
Vidas Stakėnas ◽  
Ričardas Beniušis ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Carbon Stocks ◽  
Organic Soils
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