A review on microstructural study and compressive strength of geopolymer mortar, paste and concrete
Aluminosilicates; 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 inve...
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2023
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my.uniten.dspace-236452023-05-29T14:50:43Z A review on microstructural study and compressive strength of geopolymer mortar, paste and concrete Ng C. Alengaram U.J. Wong L.S. Mo K.H. Jumaat M.Z. Ramesh S. 57203065131 26533874300 55504782500 55915884700 6506523621 41061958200 Aluminosilicates; 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; Geopolymers The 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 Ltd Final 2023-05-29T06:50:43Z 2023-05-29T06:50:43Z 2018 Review 10.1016/j.conbuildmat.2018.07.075 2-s2.0-85050403254 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85050403254&doi=10.1016%2fj.conbuildmat.2018.07.075&partnerID=40&md5=2a6a4830394c6d4f15bc3e93591ccd18 https://irepository.uniten.edu.my/handle/123456789/23645 186 550 576 Elsevier Ltd Scopus |
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Aluminosilicates; 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; Geopolymers |
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57203065131 |
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57203065131 Ng C. Alengaram U.J. Wong L.S. Mo K.H. Jumaat M.Z. Ramesh S. |
| format |
Review |
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Ng C. Alengaram U.J. Wong L.S. Mo K.H. Jumaat M.Z. Ramesh S. |
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Ng C. Alengaram U.J. Wong L.S. Mo K.H. Jumaat M.Z. Ramesh S. A review on microstructural study and compressive strength of geopolymer mortar, paste and concrete |
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Ng C. |
| title |
A review on microstructural study and compressive strength of geopolymer mortar, paste and concrete |
| title_short |
A review on microstructural study and compressive strength of geopolymer mortar, paste and concrete |
| title_full |
A review on microstructural study and compressive strength of geopolymer mortar, paste and concrete |
| title_fullStr |
A review on microstructural study and compressive strength of geopolymer mortar, paste and concrete |
| title_full_unstemmed |
A review on microstructural study and compressive strength of geopolymer mortar, paste and concrete |
| title_sort |
review on microstructural study and compressive strength of geopolymer mortar, paste and concrete |
| publisher |
Elsevier Ltd |
| publishDate |
2023 |
| _version_ |
1806428431172239360 |