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Title:Investigations to establish the influence of the thermal energy field on soil properties
Authors:ID Kadali, Srinivas (Author)
ID Lekshmi, Susha (Author)
ID Sharma, Susmita (Author)
ID Singh, D. N. (Author)
ID Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru (Copyright holder)
Files:.pdf Acta_geotechnica_Slovenica_2013_Kadali_et_al._Investigations_to_establish_the_influence_of_the_thermal_energy_field_on_soil_properties.pdf (1,08 MB)
MD5: 0F46918F1BB041CDD9E8D0CD84DD8127
PID: 20.500.12556/dkum/6b47451d-c1ed-47f5-bc5f-4a678d2f8c7f
 
URL http://fgserver3.fg.um.si/journal-ags/2013-2/article-5.asp
 
Language:English
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
Abstract:This paper describes details of a study to investigate and demonstrate the changes undergone by soil when it is exposed to elevated temperatures. Such situations are commonly encountered while designing the foundations for the furnaces, boiler units, forging units, brick kilns, rocket launching pads, buried power-supply cables, air-conditioning ducts, underground explosions, disposal of high-level radioactive and industrial toxic wastes, ground modifications or soil-stabilization techniques, etc. As such, investigations to establish changes undergone by the soil when it is exposed to elevated temperatures assume some importance. With this in view, individual samples of six soils, with entirely different characteristics, were subjected to temperatures up to 300°C (sequentially in steps of 50°C) and after each step of thermal treatment, these samples were characterized for their physical, chemical and mineralogical properties. Based on a critical synthesis of the results, it has been demonstrated that elevated temperatures cause (i) a change in the color, (ii) an increase in the specific gravity, particle size and weight loss, (iii) a reduction in the specific surface area, cation-exchange capacity and zeta-potential, and (iv) a structural transformation of the soil. Though these changes would affect the engineering properties of the soil to a large extent, the scope of this paper is limited to demonstrating the alterations in physical, chemical and mineralogical changes, only, occurring in the soil when it is exposed to elevated temperatures.
Keywords:elevated temperatures, soil, characterization, physical characteristics, chemical characteristics, mineralogical characteristics
Publication status:Published
Publication version:Version of Record
Year of publishing:2013
Number of pages:str. 59-76
Numbering:Letn. 10, št. 2
PID:20.500.12556/DKUM-70809 New window
ISSN:1854-0171
UDC:550.41:624.131
ISSN on article:1854-0171
COBISS.SI-ID:277764096 New window
NUK URN:URN:SI:UM:DK:P9LNOFCC
Copyright:Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru
Publication date in DKUM:14.06.2018
Views:1435
Downloads:70
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Categories:Misc.
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Record is a part of a journal

Title:Acta geotechnica Slovenica
Shortened title:Acta geotech. Slov.
Publisher:Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru
ISSN:1854-0171
COBISS.SI-ID:215987712 New window

Secondary language

Language:Slovenian
Title:Preiskave vpliva toplotno energetskih polj na lastnosti zemljin
Abstract:Članek opisuje podrobnosti študije o preiskavah zemljin in njihovih spremembah pri povišanih temperaturah. Do takšnih situacij pride običajno pri načrtovanju temeljev za peči, kotle, naprave za kovanje, opekarne, izstrelitvene ploščadi, pri polaganju podzemnih napajalnih kablov in klimatizacijskih vodov, pri podzemnih eksplozijah, odlaganju visoko radioaktivnih in strupenih industrijskih odpadkov, modifikaciji in stabilizaciji zemljin itd. V takih primerih je pomembno opraviti preiskave za določitev sprememb, ki so jim podvržene zemljine pri izpostavljanju povišanim temperaturam. V preiskavi so bili posamezni vzorci šestih zemljin s popolnoma različnimi lastnostmi izpostavili temperaturi do 300°C (v zaporednih stopnjah po 50°C), po vsaki končani stopnji termične obdelave pa so bile določene njihove fizikalne, kemične in mineraloške lastnosti. Na osnovi kritične sinteze rezultatov je pojasnjeno, da povišane temperature povzročijo (i) spremembo barve, (ii) povečanje specifične teže, velikosti delcev in izgubo teže, (iii) zmanjšanje specifične površine, sposobnosti kationske izmenjave in zeta potenciala in (iv) strukturne spremembe zemljin. Čeprav bi te spremembe močno vplivale na inženirske lastnosti zemljin, je obseg tega članka omejen zgolj na prikaz fizikalnih, kemičnih in mineraloških sprememb zemljin, ki se pojavijo pri izpostavljanju zemljin povišanim temperaturam.
Keywords:geokemija, vpliv temperature, povišane temperature, zemljine, določanje lastnosti, fizikalne lastnosti, kemične lastnosti, mineraloške lastnosti


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  1. Acta geotechnica Slovenica

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