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A review on microstructural study and compressive strength of geopolymer mortar, paste and concrete

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dc.citedby152
dc.contributor.authorNg C.en_US
dc.contributor.authorAlengaram U.J.en_US
dc.contributor.authorWong L.S.en_US
dc.contributor.authorMo K.H.en_US
dc.contributor.authorJumaat M.Z.en_US
dc.contributor.authorRamesh S.en_US
dc.contributor.authorid57203065131en_US
dc.contributor.authorid26533874300en_US
dc.contributor.authorid55504782500en_US
dc.contributor.authorid55915884700en_US
dc.contributor.authorid6506523621en_US
dc.contributor.authorid41061958200en_US
dc.date.accessioned2023-05-29T06:50:43Z
dc.date.available2023-05-29T06:50:43Z
dc.date.issued2018
dc.descriptionAluminosilicates; Binders; Compressive strength; Computerized tomography; Concretes; Curing; Inorganic polymers; Microcracking; Microcracks; Microstructure; Mortar; Portland cement; Sodium hydroxide; Alkali activators; Cementitious properties; Geopolymer; Industrial by-products; Microstructural investigation; Microstructure analysis; Ordinary Portland cement; Sodium hydroxide solutions; Geopolymersen_US
dc.description.abstractThe utmost priority in reducing the usage of ordinary Portland cement (OPC) while replicating the cementitious properties by utilizing industrial by-products in construction materials is seriously undertaken by many researchers. The technology of geopolymerization that utilizes materials and activator solution to form geopolymer matrix could lead to alleviate some of the issues related to OPC based concrete. Numerous experiments have established that geopolymer concrete has higher compressive strength, higher acid resistivity and lower shrinkage than ordinary concrete. This review article focusses on the microstructure analyses of the geopolymer specimens and comparison of geopolymers with various binders. The review analysis of various binders used and their microstructural investigations reveal that different molarity of sodium hydroxide or phosphoric acid solution, liquid-to-binder ratio, curing temperature and duration yield geopolymers of diverse properties. Most of the geopolymer products revealed a wide hump in the XRD analysis due to the amorphous structure of aluminosilicate. Investigation of MIP and Micro CT reveals that aged geopolymer has a denser matrix arrangement and produce high compressive strength. Geopolymerization prevents interconnectivity of micropores due to the formation of denser matrix of geopolymer gel. Generally, the use of 12M of sodium hydroxide solution, low liquid-to-binder ratio of about 0.4 and curing temperature at approximately 70 �C for at least 24 h produced high strength geopolymers. The binders mixed with lower sodium silicate to sodium hydroxide mass ratio of 2.0�2.5 tend to react more efficiently. � 2018 Elsevier Ltden_US
dc.description.natureFinalen_US
dc.identifier.doi10.1016/j.conbuildmat.2018.07.075
dc.identifier.epage576
dc.identifier.scopus2-s2.0-85050403254
dc.identifier.spage550
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85050403254&doi=10.1016%2fj.conbuildmat.2018.07.075&partnerID=40&md5=2a6a4830394c6d4f15bc3e93591ccd18
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/23645
dc.identifier.volume186
dc.publisherElsevier Ltden_US
dc.sourceScopus
dc.sourcetitleConstruction and Building Materials
dc.titleA review on microstructural study and compressive strength of geopolymer mortar, paste and concreteen_US
dc.typeReviewen_US
dspace.entity.typePublication
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