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  • Fontsize: + Print Featured  Ironochre Ferrousiron Tuesday,01March2016 1975Hits

    Whatisironochre?

    Ironochreresultsfromachemicalreactionorabiologicalprocess,andbothofthesecausesmayoccureitherindividuallyorsimultaneously: 

    Chemicalreaction:Whenthesoilcontainsiron,itmigratesalongwiththewatertowardsthedrainagesystem.Whenitcomesincontactwiththeatmosphere,itformsasludgeofironhydroxide. 

    Biologicalprocess:Whenironbacteriumispresentwithinthewatertable,thisbacterium,followingoxidationoftheironuponcomingintocontactwiththeatmosphere,producesagel-likemass. 

    Whenthebiologicalprocessaddsuptothechemicalreaction,theoxidationeffectisconsiderablyincreased. 

    Bothcasesresultintheformationofaviscousdepositonthecorrugatedwallofdrainpipes.Thisdepositiswhatwecallironochre.

    Whatconditionsgiverisetoironochre?

    Thissubstanceismorelikelytodevelopinamoreaeratedsoil,suchasthesandysoilscontainingsilt,andwilllesslikelydevelopinclaysoils.Thechemicalorbiologicalreactionisalsoquicker: 

    • wheresoiltendstobeneutral(pHofapproximately7); 
    • whenthewallofthedrainiscorrugated;•whentheopeningsofthedrainarepunchedinsteadofcutout,whichcreates 
    • attachmentzonesforthedeposits; 
    • whenthedrainiswrappedinafilteringmembrane. 

    Undertheactionofironochre,evencrushedgravellosesitsfilteringproperties.Thesoilsrichinironandinironbacteriawillproduceferrousdepositsindefinitely.

    Whatconsequenceshasthepresenceofironochre?

    Ironochrecausesseveralissueswithbuildings:•

    • Itcausesocher-coloredslimysludgedepositstoaccumulateintherainwatercatchbasinandinditches. 
    • Itcreatesreddishdepositsontheconcreteslabofbasements.Thesedepositsgiveasulfur-likeodour. 
    • Itobstructsagriculturaltiledrains:sincerunoffwaterisnolongerchannelledatadistancefromthefoundations,itinfiltratesthebasement,atthejunctionbetweenfoundationwallsandslab. 
    • Itobstructsthebackflowvalves.

    Canoneeliminateironochreorpreventthisbacterialgrowth?

    Ironisnaturallypresentinthesoil.Thus,itisverydifficulttoeliminatealtogether.Evenifonewouldreplacethesoilsurroundingabuilding,ironoriginatingfromtheneighbouringsoilswouldstillmigratetowardsthedrainofthepropertythroughnaturalwaterrunoff.Topreventbacterialgrowth,onewouldneedtoeliminatefromthesoiltwonaturalelements-waterandair-whichisimpossible.Itisthereforenotfeasibletopreventthechemicalreactiongivingrisetoironochre.

    Howcanwepreventironochredeposits,andhowcanweremedyitwhenpresent?

    Itispossibletopreventironochredeposits,eitherbeforeoraftertheconstruction. 

    Beforetheconstruction,onemustkeepvigilantwhentell-talesignsappearsuchasthepresenceofreddishwaters,afterarainfall,inditchesoronthegroundsurface. 

    Duringtheconstructionofaproperty,itisrecommendedtoenquire,withtheneighboursandthemunicipality,aboutanyhistoryofironochreformationsinthearea.Aprofessionalevaluationofthecurrentconditionsshouldalsobemadebeforeproceedingwiththeconstruction.

    1 Tags: ironochre Underpinningofbasements DELTA®-MSdimpledmembrane { "@context":"http://schema.org", "mainEntityOfPage":"https://fondationsajd.com/en/blog/ferrous-ironm-blog/entry/iron-ochre", "@type":"BlogPosting", "headline":"Ironochre", "image":"https://fondationsajd.com/images/easyblog_articles/24/b2ap3_small_ferrous-iron001.jpg", "editor":"FDA", "genre":"Ferrousiron", "wordcount":"521", "publisher":{ "@type":"Organization", "name":"Fondationsd'Aujourd'hui", "logo":{"@type":"ImageObject","url":"https:\/\/fondationsajd.com\/media\/com_easyblog\/images\/schema\/logo.png","width":60,"height":60} }, "datePublished":"2016-03-01", "dateCreated":"2016-03-01", "dateModified":"2016-03-01", "description":"", "articleBody":"<divclass="ebd-block"data-type="heading"><h2>Whatisironochre?<br></h2></div><divclass="ebd-block"data-type="text"><p>Ironochreresultsfromachemicalreactionorabiologicalprocess,andbothofthesecausesmayoccureitherindividuallyorsimultaneously:&nbsp;</p><p><strongdata-redactor-tag="strong"data-verified="redactor">Chemicalreaction</strong>:Whenthesoilcontainsiron,itmigratesalongwiththewatertowardsthedrainagesystem.Whenitcomesincontactwiththeatmosphere,itformsasludgeofironhydroxide.&nbsp;</p><p><strongdata-redactor-tag="strong"data-verified="redactor">Biologicalprocess:</strong>Whenironbacteriumispresentwithinthewatertable,thisbacterium,followingoxidationoftheironuponcomingintocontactwiththeatmosphere,producesagel-likemass.&nbsp;</p><p>Whenthebiologicalprocessaddsuptothechemicalreaction,theoxidationeffectisconsiderablyincreased.&nbsp;</p><p>Bothcasesresultintheformationofaviscousdepositonthecorrugatedwallofdrainpipes.Thisdepositiswhatwecallironochre.</p></div><divclass="ebd-block"data-type="heading"><h2>Whatconditionsgiverisetoironochre?<br></h2></div><divclass="ebd-block"data-type="text"><p><span>Th</span><span>issubstanceismorelikelytodevelopinamoreaeratedsoil,suchasthesandysoilscontainingsilt,andwilllesslikelydevelopinclaysoils.Thechemicalorbiologicalreactionisalsoquicker:&nbsp;</span></p><ul><li><span>wheresoiltendstobeneutral(pHofapproximately7);&nbsp;</span><br></li><li><span>whenthewallofthedrainiscorrugated;•whentheopeningsofthedrainarepunchedinsteadofcutout,whichcreates&nbsp;</span><br></li><li><span>attachmentzonesforthedeposits;&nbsp;</span><br></li><li><span>whenthedrainiswrappedinafilteringmembrane.&nbsp;</span><br></li></ul><p>Undertheactionofironochre,evencrushedgravellosesitsfilteringproperties.Thesoilsrichinironandinironbacteriawillproduceferrousdepositsindefinitely.</p></div><divclass="ebd-block"data-type="heading"><h2>Whatconsequenceshasthepresenceofironochre?<br></h2></div><divclass="ebd-block"data-type="text"><p>Ironochrecausesseveralissueswithbuildings:•</p><ul><li><span>Itcausesocher-coloredslimysludgedepositstoaccumulateintherainwatercatchbasinandinditches.&nbsp;</span><br></li><li><span>Itcreatesreddishdepositsontheconcreteslabofbasements.Thesedepositsgiveasulfur-likeodour.&nbsp;</span><br></li><li><span>Itobstructsagriculturaltiledrains:sincerunoffwaterisnolongerchannelledatadistancefromthefoundations,itinfiltratesthebasement,atthejunctionbetweenfoundationwallsandslab.&nbsp;</span><br></li><li><span>Itobstructsthebackflowvalves.</span><br></li></ul></div><divclass="ebd-block"data-type="heading"><h2>Canoneeliminateironochreorpreventthisbacterialgrowth?<br></h2></div><divclass="ebd-block"data-type="text"><p>Ironisnaturallypresentinthesoil.Thus,itisverydifficulttoeliminatealtogether.Evenifonewouldreplacethesoilsurroundingabuilding,ironoriginatingfromtheneighbouringsoilswouldstillmigratetowardsthedrainofthepropertythroughnaturalwaterrunoff.Topreventbacterialgrowth,onewouldneedtoeliminatefromthesoiltwonaturalelements-waterandair-whichisimpossible.Itisthereforenotfeasibletopreventthechemicalreactiongivingrisetoironochre.</p></div><divclass="ebd-block"data-type="heading"><h2>Howcanwepreventironochredeposits,andhowcanweremedyitwhenpresent?<br></h2></div><divclass="ebd-block"data-type="text"><p>Itispossibletopreventironochredeposits,eitherbeforeoraftertheconstruction.&nbsp;</p><p><strongdata-redactor-tag="strong"data-verified="redactor">Beforetheconstruction</strong>,onemustkeepvigilantwhentell-talesignsappearsuchasthepresenceofreddishwaters,afterarainfall,inditchesoronthegroundsurface.&nbsp;</p><p><strongdata-redactor-tag="strong"data-verified="redactor">Duringtheconstructionofaproperty</strong>,itisrecommendedtoenquire,withtheneighboursandthemunicipality,aboutanyhistoryofironochreformationsinthearea.Aprofessionalevaluationofthecurrentconditionsshouldalsobemadebeforeproceedingwiththeconstruction.</p></div>", "author":{ "@type":"Person", "name":"FDA", "image":"https://fondationsajd.com/components/com_easyblog/assets/images/default_blogger.png" }, "aggregateRating":{ "@type":"http://schema.org/AggregateRating", "ratingValue":"5", "worstRating":"1", "bestRating":"5", "ratingCount":"1" } }
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