VOL. 9, NO. 10, OCTOBER 2014 - PDF document

VOL. 9, NO. 10, OCTOBER 2014 ISSN 1819-6608 ARPN Journal of Engineering and Applied Sciences ©2006-2014 Asian Research Publishing Network (ARPN). All rights reserved. ZZZ.arpnMournaOs.com 1 ANALYSIS OF SUSCEPTIBILITY TO SUFFUSION N. SantKana.rLsKnan and T. R. NeeOaNantanB. TecK CLvLO EnJLneerLnJ SASTRA UnLversLt\ TKanMavur ,ndLa Centre for Advanced ResearcK Ln EnvLronment ScKooO of CLvLO EnJLneerLnJ SASTRA UnLversLt\ TKanMavur ,ndLa EMaLO n.santKanaNrLsKnan@JmaLO.com ABSTRACT ,n tKe modern ZorOd of scLence and tecKnoOoJ\ rapLd JroZtK Kas escaOated tKe need for specLfLc and approprLate VOL. 9, NO. 10, OCTOBER 2014 ISSN 1819-6608 ARPN Journal of Engineering and Applied Sciences ©2006-2014 Asian Research Publishing Network (ARPN). All rights reserved. ZZZ.arpnMournaOs.com 2000 .enne\ and /au proposed tKe foOOoZLnJ crLterLa :an and FeOO 200 1 ZKere + Ls Lncrement of % passLnJ tKat occurs over a desLJnated JraLn sL]e LntervaO of D to 4D F Ls tKe % passLnJ at JraLn sL]e D F sKouOd be ≤ 30% BurenNova suJJested tKe foOOoZLnJ formuOa :an and FeOO 200 0.6OoJK" 2 ZKere 3  Ls dLameter Ln mm correspondLnJ to 0% mass passLnJ. Ls dLameter Ln mm correspondLnJ to 60% mass passLnJ. Ls dLameter Ln mm correspondLnJ to 15% mass passLnJ. ,stomLna put forZard tKe foOOoZLnJ crLterLon /L 200  SoLO Ls LnternaOO\ stabOe 5  SoLO Ls LnternaOO\ UnstabOe 6  SoLO Ls deemed a transLtLon materLaO  ZKere C Ls tKe coeffLcLent of unLformLt\  Ls dLameter Ln mm correspondLnJ to 60% mass passLnJ. Ls dLameter Ln mm correspondLnJ to 10% mass passLnJ. .e]dL postuOated tKe condLtLon JLven beOoZ /L 200 at Jap OocatLon for JapJraded soLOs and +/FmLn poLnt for ZLdeO\Jraded soLOs. ZKere D Ls tKe dLameter Ln mm of tKe 15% mass passLnJ Ln tKe coarser fractLon Ls tKe dLameter Ln mm of tKe 5% mass passLnJ Ln tKe fLner fractLon. /Lu Jave tKe foOOoZLnJ crLterLon /L 200 P  25  LnternaOO\ unstabOe P  25 to 35  transLtLon condLtLon 10 P > 35  LnternaOO\ stabOe 11 ZKere P Ls tKe mass passLnJ % at tKe Jap OocatLon for Jap Jraded soLOs and mass passLnJ % at tKe dLvLsLon dLameter for contLnuousO\ Jraded soLOs. Mao suJJested foOOoZLnJ condLtLon /L 200  LnternaOO\ unstabOe 12  LnternaOO\ stabOe 13 ZKere p Ls tKe mass passLnJ at tKe Jap OocatLon % for JapJraded soLOs and mass passLnJ % at tKe dLvLsLon dLameter for contLnuousO\ Jraded soLOs n Ls porosLt\ BuscK and /ucNner proposed tKe foOOoZLnJ equatLon +udaN 200 14 ZKere d Ls OarJest JraLn tKat can underJo suffusLon Ln mm U Ls coeffLcLent of unLformLt\ e Ls voLd ratLo Ls dLameter Ln mm correspondLnJ to 1% mass passLnJ. Patrasev devLsed tKe foOOoZLnJ equatLon Semar et al. 2010 15 for Cu ≤ 25 16 for Cu > 25 1 ZKere d Ls tKe OarJest suffusLve JraLn sL]e dLameter Ln mm Ls tKe effectLve openLnJ sL]e of tKe structure Ln mm Ls coeffLcLent of unLformLt\ e Ls voLd ratLo Ls dLameter Ln mm correspondLnJ to 1% mass passLnJ. ZLem proposed tKe foOOoZLnJ formuOa Semar et al2010 1 VOL. 9, NO. 10, OCTOBER 2014 ISSN 1819-6608 ARPN Journal of Engineering and Applied Sciences ©2006-2014 Asian Research Publishing Network (ARPN). All rights reserved. ZZZ.arpnMournaOs.com 2001 ZKere C Ls coeffLcLent of unLformLt\ e Ls voLd ratLo Ls dLameter Ln mm correspondLnJ to 1% mass passLnJ. RESU/TS AND D,SCUSS,ONS TKe partLcOe sL]e dLstrLbutLon of tKe soLOs seOected Ln tKe stud\ Ls JLven beOoZ Ln FLJures 1 2 3 4 and 5. FLJure1. PartLcOe JraLn sL]e dLstrLbutLon curve for soLO S1. FLJure2. PartLcOe JraLn sL]e dLstrLbutLon curve for soLO S2. PartLcOe JraLn sL]e dLstrLbutLon curve for soLO S3. PartLcOe JraLn sL]e dLstrLbutLon curve for soLO S4. PartLcOe JraLn sL]e dLstrLbutLon curve for soLO S5. SusceptLbLOLt\ of tKe soLOs to suffusLon based on dLfferent crLterLa Ls JLven beOoZ Ln TabOe1. VOL. 9, NO. 10, OCTOBER 2014 ISSN 1819-6608 ARPN Journal of Engineering and Applied Sciences ©2006-2014 Asian Research Publishing Network (ARPN). All rights reserved. ZZZ.arpnMournaOs.com 2002 TabOe1. SusceptLbLOLt\ of tKe soLOs to suffusLon. SoLO S1 S2 S3 S4 S5 .enne\ and /au 16 S S S S S ,stomanLa 15 S S S S S .e]dL 1 S S S S S BurenNova 13 NS S NS NS S /Lu 2005 T T T S NS Mao 2005 S NS S S S BuscK and /ucNner 12 S S S S S Patrasev 11 S S S S S ZLem 16 S S S S S S  SuffusLve NS  NonsuffusLve T  TransLtLon CondLtLon AnaO\sLs of tKe soLOs usLnJ BurenNova metKod Ls JLven beOoZ Ln FLJure6. BurenNova¶s cKart for suffusLon susceptLbLOLt\ of soLOs S1 to S5. BurenNova metKod Ls found to JLve unsafe resuOts. ,n vLeZ of Lts e[tensLve appOLcatLon and LnconsLstent concOusLons tKLs metKodoOoJ\ JLves scope for Lmprovement to ensure better success rate. MOD,F,CAT,ON OF BUREN.OVA MET+OD ,n order to refLne tKLs metKodoOoJ\ a broader anaO\sLs Kas been done usLnJ e[perLmentaO data from otKer autKors aOonJ ZLtK tKe data from current stud\. A totaO of 106 data poLnts are used. 62 JradatLons used b\ /L 200 to modLf\ .e]dL and .enne\ crLterLa are taNen aOonJ ZLtK 6 JradatLons from AndrLanatreKLna 2012 20 from :an and FeOO 200 3 from CKapLus 16  from BurenNova 13 2 from /afOeur 1 and 5 from current stud\. TKe 106 JradatLons are cateJorL]ed Lnto tZo Jroups nameO\ JapJraded and ZLdeO\Jraded soLOs. 3 JradatLons faOO Lnto tKe cateJor\ of JapJraded soLOs ZKLOe tKe rest 6 JradatLons are ZLdeO\Jraded soLOs. :an and FeOO 200 proposed a modLfLed metKod for ZLdeO\Jraded soLOs. AppO\LnJ tKeLr metKod to tKe cKosen 106 JradatLons cOearO\ sKoZs tKat tKeLr metKod JLves unsafe resuOts see FLJure. BurenNova orLJLnaOO\ suJJested common OLmLts for botK JapJraded and ZLdeO\Jraded soLOs see FLJure. TKouJK d0 d60 and d15 vaOues of a JapJraded soLO and a ZLdeO\Jraded soLO mLJKt be same pacNLnJ of soLO partLcOes dLffers betZeen tKem as one or more partLcOe sL]es are found mLssLnJ Ln JapJraded soLOs. SuffusLon Ls affected b\ soLO structure ZKLcK represents tKe Za\ soLO partLcOes are pacNed. TKLs fact proves tKat common modeO cannot be proposed for botK JapJraded and ZLdeO\Jraded soLOs. FurtKer tKe data poLnts aOso support tKe vLeZ of KavLnJ separate modeOs. FLJure. :an and FeOO metKod 200. VOL. 9, NO. 10, OCTOBER 2014 ISSN 1819-6608 ARPN Journal of Engineering and Applied Sciences ©2006-2014 Asian Research Publishing Network (ARPN). All rights reserved. ZZZ.arpnMournaOs.com 2003 FLJure. SoLOs pOotted ZLtK BurenNova¶s orLJLnaO OLmLts. /oJLc beKLnd tKe modLfLcatLon TKe autKors use tKe foOOoZLnJ tZo OoJLcs to propose modLfLed modeOs. ConsLderLnJ d as an Lnde[ for coarser partLcOes dfor medLumsL]ed partLcOes and d for fLner partLcOes tKe vaOue of d sKouOd Lncrease ZKen dLncreases for maLntaLnLnJ stabLOLt\. ,f [ Ls tKe vaOue of d tKen d sKouOd Kave vaOue betZeen 0 and [. ,f [ vaOue Ls smaOO tKen number of data poLnts betZeen 0 and [ ZLOO be Oess and tKe number of stabOe data poLnts ZLOO be Oesser. On tKe otKer Kand Lf [ vaOue Ls KLJK tKen tKe number of data poLnts betZeen 0 and [ ZLOO be more and tKe number of stabOe data poLnts ZLOO aOso be more. TKus at OoZer vaOues of d tKe stabOe ]one ZLOO be smaOO and as Lncreases stabOe ]one aOso Lncreases. TKe modeO ZKLcK satLsfLes tKe above OoJLcs and aOso accommodates ma[Lmum data poLnts correctO\ sKouOd be tKe most perfect modeO. Proposed modeOs for ZLdeO\Jraded soLOs Based on tKe data poLnts of ZLdeO\ Jraded soLOs Lt can be concOuded tKat tKere e[Lsts a transLtLon ]one near tKe stabOe ]one on botK sLdes ZKere tKere Ls a mL[ of stabOe and unstabOe soLOs. ,f tKe data poLnts of tKe unstabOe soLOs beOoZ a possLbOe transLtLon boundar\ are connected a sOope Ls obtaLned see FLJure. FLJure. SOope for proposLnJ modeOs. TKe autKors feeO a modeO KavLnJ OoZer boundar\ of tKe OoZer transLtLon ]one ZLtK sLmLOar sOope ZLOO be tKe most compatLbOe modeO. Based on tKLs Ldea tKe autKors Kave proposed fLve modeOs see FLJure10 11 12 13 and 14. FLJure10. :LdeO\Jraded soLOs modeO 1. FLJure11. :LdeO\Jraded soLOs modeO 2. VOL. 9, NO. 10, OCTOBER 2014 ISSN 1819-6608 ARPN Journal of Engineering and Applied Sciences ©2006-2014 Asian Research Publishing Network (ARPN). All rights reserved. ZZZ.arpnMournaOs.com 2004 FLJure12. :LdeO\Jraded soLOs modeO 3. FLJure13. :LdeO\Jraded soLOs modeO 4. FLJure14. :LdeO\Jraded soLOs modeO 5. A poLnt to note Kere Ls tKat tKe upper OLmLt of tKe stabOe ]one Ls restrLcted b\ tKe unstabOe soLO S2 from current stud\ ZLtK coordLnates 165 5. SoLO S2 Ls proved to be unstabOe based on tKeoretLcaO metKods and not e[perLmentaOO\. TKe current tKeoretLcaO metKods are not perfect and tKe e[perLmentaO resuOt ma\ deem tKe soLO S2 to be stabOe. As of noZ tKe autKors consLder tKe soLO as unstabOe and Kave proposed tKe OLmLts. ,n tKe event of tKe soLO beLnJ unstabOe but consLdered stabOe tKen tKe current proposed OLmLts ma\ JLve unsafe resuOts. +ence tKe autKors conservatLveO\ consLder tKe soLO as unstabOe. TKe autKors suJJest verLf\LnJ SoLO S2 e[perLmentaOO\ Ln future and Lf Lt Ls found to be stabOe tKe OLmLts ma\ be refLned. ,n case of refLnement tKe current stabOe ]one area ZLOO Jet Lncreased. TKe modeO 1 JLves LOOoJLcaO vaOues for stabOe ]one at OoZer vaOues of d L.e. ZKen d Ls 1 tKe modeO aOOoZs a stabOe soLO to Kave d vaOue Jreater tKan 1. FurtKer tKe modeO does not obe\ tKe second OoJLc of tKe modLfLcatLon. TKouJK tKe modeOs 3 and 5 obe\ tKe second OoJLc of tKe modLfLcatLon tKe\ JLve LOOoJLcaO vaOues for tKe soLOs Ln transLtLon ]one. TKe modeO Ln ZKLcK Oeast number of unstabOe data poLnts Ln tKe transLtLon ]one and ma[Lmum number of unstabOe data poLnts outsLde tKLs transLtLon ]one are present Ls tKe best modeO. ModeO One Kas 14 unstabOe data poLnts Ln tKe transLtLon ]one and 25 unstabOe data poLnts outsLde tKe transLtLon ]one modeO TZo  unstabOe data poLnts Ln tKe transLtLon ]one and 32 unstabOe data poLnts outsLde tKe transLtLon ]one modeO TKree 14 unstabOe data poLnts Ln tKe transLtLon ]one and 25 unstabOe data poLnts outsLde tKe transLtLon ]one modeO Four 10 unstabOe data poLnts Ln tKe transLtLon ]one and 2 unstabOe data poLnts outsLde transLtLon ]one and modeO FLve 14 unstabOe data poLnts Ln tKe transLtLon ]one and 25 unstabOe data poLnts outsLde transLtLon ]one. ConsLderLnJ tKe above dLscussLons modeO 2 can be concOuded as tKe most approprLate modeO. One LnterestLnJ aspect to note Kere Ls tKe upper boundar\ of tKe neZ stabOe ]one and tKe OoZer boundar\ of tKe OoZer transLtLon ]one.TKe upper boundar\ of tKe neZ stabOe ]one Kas tKe same equatLon as tKat of burenNova s orLJLnaO stabOe ]one upper OLmLt and tKe OoZer boundar\ equatLon of tKe OoZer transLtLon ]one Ls same as tKat of BurenNova s orLJLnaO stabOe ]one OoZer OLmLt. TKus tKe refLnement Oeads to reductLon Ln tKe BurenNova s orLJLnaO stabOe ]one and addLtLon of neZ transLtLon boundarLes on eLtKer sLde of stabOe ]one. TKe OoZer part of BurenNova s orLJLnaO stabOe ]one Kas been refLned as OoZer transLtLon ]one. TKe fLnaO refLned boundarLes are TransLtLon Zone /oZer /LmLt StabOe Zone /oZer /LmLt StabOe Zone Upper /LmLt TransLtLon Zone Upper /LmLt Proposed modeOs for JapJraded soLOs TKouJK a transLtLon ]one as Ln ZLdeO\Jraded soLOs ma\ be proposed for JapJraded soLOs Lnadequac\ of data poLnts compeOs autKors to restrLct tKe modeOs ZLtK stabOe ]one aOone. +oZever Ln future ZLtKsuffLcLent data poLnts tKemodeOs ma\ be refLned to LncOude transLtLon ]ones. 4 modeOs Kave been proposed Kere see FLJure15 16 1 and 1. VOL. 9, NO. 10, OCTOBER 2014 ISSN 1819-6608 ARPN Journal of Engineering and Applied Sciences ©2006-2014 Asian Research Publishing Network (ARPN). All rights reserved. ZZZ.arpnMournaOs.com 2005 FLJure15. *apJraded soLOs modeO 1. FLJure16. *apJraded soLOs modeO 2. FLJure1. *apJraded soLOs modeO 3. FLJure1. *apJraded soLOs modeO 4. TKe tZo bOue data poLnts Ln tKe above FLJures represent UNS: sampOes 13 and . UNS: deemed tKese soLOs as stabOe and :an and FeOO 200 aOso stated tKe same. But SaOeKL 2012 assessed tKese tZo soLOs to be unstabOe. +ence tKere Ls dLfference of opLnLon. +oZever based on tKe trend of data poLnts tKe autKors feeO tKe soLOs 13 and  are stabOe. ,f tKe boundarLes of tKe stabOe ]one for JapJraded and ZLdeO\Jraded soLOs are compared tKe sOope of tKe boundarLes proposed for JapJraded soLOs Ls KLJKer tKan tKat of ZLdeO\Jraded soLO. TKe Jap JeneraOO\ occurs beOoZ d. ConsLder tZo stabOe soLOs one Ln eacK t\pe JapJraded and ZLdeO\Jraded KavLnJ same d and d vaOue. TKe voLds betZeen tKe coarser partLcOes are fLOOed b\ successLve fLner partLcOes. ,n case of JapJraded soLOs because of tKe absence of one or more partLcOe sL]es beOoZ  tKe d vaOue must Lncrease to maLntaLn stabLOLt\. TKus for tKe same vaOue of d and d a JapJraded stabOe soLO sKouOd Kave KLJKer d vaOue tKan a ZLdeO\Jraded stabOe soLO ZKLcK means tKat for tKe same vaOue of d tKe vaOue of a JapJraded stabOe soLO sKouOd be smaOOer tKan tKat of ZLdeO\Jraded stabOe soLO. TKus tKe sOope of tKe boundarLes proposed for JapJraded soLOs Ls KLJKer tKan tKat of ZLdeO\Jraded soLO. ModeOs 2 and 4 do not obe\ tKe second OoJLc. TKe autKors feeO tKat Lt Ls safer to consLder a JraduaO Lncrease ofstabOe ]one Ln smaOOer steps aOonJ tKe [a[Ls and tKus tKe autKors consLder modeO 1 to be more approprLate tKan modeO 3. TKe fLnaO refLned boundarLes are StabOe Zone /oZer /LmLt StabOe Zone Upper /LmLt PROPOSA/ OF A NE: MET+OD TKouJK man\ tKeoretLcaO metKods e[Lst for assessLnJ susceptLbLOLt\ to suffusLon no metKod Ls found to be perfect. TKere Ls some LrreJuOarLt\ or dLscrepanc\ Ln eacK metKod. Man\ refLne tKe metKods but stLOO LrreJuOarLtLes e[Lst tKouJK reduced. TKLs compeOs tKe autKors to fLnd a neZ metKod ZKLcK ZouOd be mucK better tKan tKe current avaLOabOe metKods tKouJK tKe aLm Ls to VOL. 9, NO. 10, OCTOBER 2014 ISSN 1819-6608 ARPN Journal of Engineering and Applied Sciences ©2006-2014 Asian Research Publishing Network (ARPN). All rights reserved. ZZZ.arpnMournaOs.com 2006 fLnd a perfect fOaZOess modeO at tKe end of tKe da\. TKe same 106 JradatLons used for BurenNova metKod¶s refLnement Kas been used for tKLs. TKe neZO\ proposed crLterLa Ls as foOOoZs StabOe condLtLon D/d  4 TransLtLon CondLtLon D/d  46 UnstabOe CondLtLon D/d > 6 :Kere d  dLameter Ln mm correspondLnJ to 5% mass passLnJ Lf d vaOue Ls not avaLOabOe d can be used. D  KLJKer dLameter Ln mm at tKe Jap OocatLon for JapJraded soLOs tKe bOacN poLnts Ln tKe FLJure1 represent D or KLJKer dLameter Ln mm correspondLnJ to KLJKest vaOue of dLvLsLon betZeen tZo successLve dLameters ZLtK a dLfference of 10% fLrst dLvLsLon aOone be for a dLfference of 5% betZeen d and d Lf d vaOue Ls not avaLOabOe tKen tKLs vaOue mLJKt be sNLpped. See tKe E[ampOe1 JLven beOoZ tKe FLJure1 to NnoZ KoZ to caOcuOate tKe D vaOue for ZLdeO\Jraded soLOs. FLJure1. /ocatLon of D Ln JapJraded soLOs AndrLanatreKLna 2012. E[ampOe1. ConsLder a soLO ZLtK tKe foOOoZLnJ JraLnsL]e dLameters TabOe2. TabOe2. *raLn sL]e dLamteres of soLO µa¶ /L 200. 0.14 0.1 0.2 1.02 2.1 2. 3.4 4.51 5.52 .05 .45 TKe dLvLsLon betZeen tZo successLve dLameters ZLtK a dLfference of 10% fLrst dLvLsLon aOone beLnJ for a dLfference of 5% Ls as foOOoZs TabOe3. DLvLsLon betZeen tZo successLve dLameters ZLtK a dLfference offLrst dLvLsLon aOone beLnJ for a dLfference of 5% for soLO µa¶ /L 200. 1.26 1.56 3.65 2.13 1.36 1.26 1.21 1.23 1.2 1.34 ,f tKe vaOues Ln tKe TabOe3 are observed dKas tKe KLJKest vaOue. TKerefore KLJKest vaOue of dLvLsLon betZeen tZo successLve dLameters ZLtK a dLfference of 10% Ls 3.65 ZKLcK corresponds to dLn case of 2 or 3 dLvLsLons KavLnJ same vaOue tKe fLrst Lnstance sKouOd be taNen. d Ls tKe KLJKer dLameter correspondLnJ to KLJKest vaOue of dLvLsLon betZeen tZo successLve dLameters ZLtK a dLfference of 10% and tKerefore vaOue of D  d  1.02 mm. TKe autKors feeO tKat tKere mLJKt be LnfOuence of parameters otKer tKan partLcOe sL]e for soLOs Ln transLtLon ]one ZKLcK prevents cOassLf\LnJ tKem perfectO\ as stabOe or unstabOe. TKe autKors suJJest to future researcKers to fLnd out and stud\ tKe parameters tKat LnfOuence tKe soLOs Ln transLtLon ]one. PossLbOe parameters tKat mLJKt pOa\ a dLrect roOe Ln suffusLon are soLO mLneraOoJ\ fabrLc structure atterberJ OLmLts and soLO stress state.  JradatLons obe\ tKe neZO\ proposed formuOa ZKLOe  do not. AOO tKe  JradatLons tKat do not obe\ tKe above formuOa are UNS: :an and FeOO 200 stabOe sampOes. +oZever Lt sKouOd be noted tKat even Ln case of tKose  sampOes tKe neZ metKod tKouJK does not JLve correct resuOts JLves safer resuOts L.e. stabOe soLOs as unstabOe. TKere mLJKt be parameters OLNe soLO mLneraOoJ\ ZKLcK maNe tKem stabOe tKouJK tKeLr partLcOe sL]e corresponds to unstabOe t\pe. Some mLneraOs create KLJK LnterpartLcOe attractLon ZKLcK prevents movement of partLcOes. +oZever tKe autKors suJJest to recKecN tKe UNS: stabOe soLOs e[perLmentaOO\ aJaLn to confLrm tKeLr stabLOLt\. ,f aJaLn found stabOe tKe LnfOuencLnJ parameters mLJKt be studLed. Based on most of tKe crLterLa JLven b\ earOLer researcKers tKe autKors concOude tKat aOO tKe fLve soLOs of tKe current stud\ are susceptLbOe to suffusLon. ,t Ls suJJested tKat suffLcLent precautLon sKaOO be taNen ZKen deaOLnJ ZLtK tKese soLOs. ,t Kas been noted tKat tKe LnLtLatLon of suffusLon for suffusLve soLOs depends upon tKe K\drauOLc JradLent. +ence tKe LnfOuence of K\drauOLc JradLent Ln respect of soLO suffusLon sKaOO be studLed. ,t Ls observed tKat tKere Ls some varLatLon Ln defLnLnJ soLO susceptLbLOLt\ to suffusLon based on dLfferent crLterLa. From tKe varLous crLterLa for anaO\sLnJ VOL. 9, NO. 10, OCTOBER 2014 ISSN 1819-6608 ARPN Journal of Engineering and Applied Sciences ©2006-2014 Asian Research Publishing Network (ARPN). All rights reserved. ZZZ.arpnMournaOs.com 200 susceptLbLOLt\ to suffusLon OLterature suJJests tKat tKe modLfLed .e]dL and .enne\/au crLterLa are more conservatLve ZKereas BurenNova crLterLon JLves unsafe resuOts /L 200. RefLned BurenNova metKod b\ :an and FeOO 200 for ZLdeO\Jraded soLOs JLves unsafe resuOts. ,n vLeZ of e[tensLve usaJe of BurenNova metKod Ln tKe fLeOd of enJLneerLnJ and tKe LnconsLstent resuOts JLven b\ tKe metKod a stud\ Kas been done to refLne tKe metKod and refLned boundarLes for stabOe ]one and neZ transLtLon ]ones Kave been proposed. +oZever Lt Ls suJJested to cKecN tKe neZ boundarLes for Lts conservatLveness ZLtK more soLOs. TKe autKors suJJest a neZ metKod ZKLcK Ls mucK better tKan currentO\ avaLOabOe metKods. AC.NO:/ED*EMENT TKe fLrst autKor tKanNs Mr. .annan ,\er researcK scKoOar at ,ndLan ,nstLtute of TecKnoOoJ\ Bomba\ for LntroducLnJ tKe concept of suffusLon. TKe autKors tKanN SASTRA UnLversLt\ for provLdLnJ facLOLtLes to conduct tKe researcK. REFERENCES AndrLanatreKLna /. SouOL +. Fr\ -. -. PKan Q. T. and FOeureau -. M. 2012. ,nternaO StabLOLt\ of JranuOar materLaOs Ln trLa[LaO tests. ProceedLnJs of ,nternatLonaO Conference on Scour and ErosLon. ASCE. pp. 111. 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