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dc.contributor.authorPaudel, Shree Raj
dc.description.abstractAlkali silica reaction (ASR) is detrimental to concrete. It is a time-dependent phenomenon, which can lead to strength loss, cracking, volume expansion, and premature failure of concrete structures. In essence, it is a particular chemical reaction involving alkali hydroxides and reactive form of silica present within the concrete mix. Geopolymer is a type of alkaline activated binder synthesized through polycondensation reaction of geopolymeric precursor and alkali polysilicates. In this thesis, three types of reactive aggregates with different chemical compositions were used. Systematic laboratory experiments and microstructural analysis were carried out for the geopolymer concrete and the OPC concrete made with the same aggregates. The result suggests that the extent of ASR reaction due to the presence of three reactive aggregates in geopolymer concrete is substantially lower than that in OPC based concrete, which is explained by the pore solution change and verified through their microstructural variations and FTIR images.en_US
dc.publisherNorth Dakota State Universityen_US
dc.rightsNDSU policy 190.6.2en_US
dc.titlePore Structure and Pore Solution in Alkali Activated Fly Ash Geopolymer Concrete and Its Effect on ASR of Aggregates with Wide Silicate Contentsen_US
dc.typeThesisen_US
dc.date.accessioned2021-01-08T22:12:59Z
dc.date.available2021-01-08T22:12:59Z
dc.date.issued2019
dc.identifier.urihttps://hdl.handle.net/10365/31687
dc.subjectconcreteen_US
dc.subjectexpansionen_US
dc.subjectfly ashen_US
dc.subjectgeopolymeren_US
dc.subjectmicrostructureen_US
dc.subjectporosityen_US
dc.rights.urihttps://www.ndsu.edu/fileadmin/policy/190.pdfen_US
ndsu.degreeMaster of Science (MS)en_US
ndsu.collegeEngineeringen_US
ndsu.departmentCivil and Environmental Engineeringen_US
ndsu.programCivil Engineeringen_US
ndsu.advisorYang, Mijia


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