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Technical and environmental assessment for soil stabilization using coal ash

dc.creatorGómez D.
dc.creatorCarvajal G.
dc.creatorBalaguera A.
dc.creatorArias Y.P.
dc.date2019
dc.date.accessioned2020-04-29T14:53:41Z
dc.date.available2020-04-29T14:53:41Z
dc.identifier.isbn9780996043762
dc.identifier.urihttp://hdl.handle.net/11407/5697
dc.descriptionIn most Latin American countries, low-volume roads are composed of unpaved roads; this is considered a problem of economic, social and environmental interest. There are different stabilization alternatives for this type of roads with traditional materials, i.e., Portland cement (OPC) and lime (L), both of which have a high environmental impact due to anthropogenic CO2 emissions. This paper presents the results of the environmental assessment of an industrial residue Coal Ash (CA) with pozzolanic characteristics. The residue was alkaline activated with Ca(OH)2 from commercial lime (L). The binary system (CA+L) is called (CLM) and forms a material with cementing properties, and when it is mixed with soil, it increases the capacity to support loads. The CLM as a soil stabilizer is proposed along with the modification of some construction processes associated with lime technology and Portland cement. Finally, a technical and environmental comparison is made for conventional stabilizers and the binary system CLM. The results showed that stabilization of a silty soil with CLM can achieve a reduction of 58% and 75% in CO2 emissions when compared with L and OPC, respectively. Copyright © 2019 ISEC Press.
dc.language.isoeng
dc.publisherISEC Press
dc.relation.isversionofhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85070371831&partnerID=40&md5=baee659990def428547189da0a9f3ce1
dc.sourceISEC 2019 - 10th International Structural Engineering and Construction Conference
dc.subjectCO2 emissions
dc.subjectLatin America
dc.subjectPozzolans
dc.subjectSustainability
dc.subjectCarbon dioxide
dc.subjectCoal ash
dc.subjectEnvironmental impact
dc.subjectHydrated lime
dc.subjectLime
dc.subjectPortland cement
dc.subjectPozzolan
dc.subjectSoil cement
dc.subjectSoil mechanics
dc.subjectSoils
dc.subjectStructural design
dc.subjectSustainable development
dc.subjectSystems (metallurgical)
dc.subjectCementing properties
dc.subjectCO2 emissions
dc.subjectConstruction process
dc.subjectEnvironmental assessment
dc.subjectIndustrial residues
dc.subjectLatin America
dc.subjectSocial and environmental
dc.subjectTraditional materials
dc.subjectStabilization
dc.titleTechnical and environmental assessment for soil stabilization using coal ash
dc.typeConference Papereng
dc.rights.accessrightsinfo:eu-repo/semantics/restrictedAccess
dc.publisher.programIngeniería Civil;Ingeniería Ambiental
dc.publisher.facultyFacultad de Ingenierías
dc.affiliationGómez, D., Universidad de Medellín, Medellín, Colombia; Carvajal, G., Universidad de Medellín, Medellín, Colombia; Balaguera, A., Universidad de Medellín, Medellín, Colombia; Arias, Y.P., Universidad Nacional de Colombia, Medellín, Colombia
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dc.type.versioninfo:eu-repo/semantics/publishedVersion
dc.type.driverinfo:eu-repo/semantics/article


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