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A platform for research: civil engineering, architecture and urbanism
Potassium Geopolymer Reinforced with Alkali‐Treated Fique
In this study, potassium geopolymer was reinforced with alkali‐treated unidirectional fique fibers and 2‐D fique weaves. Tensile and flexure measurements indicated that the unidirectional composite had higher tensile and flexure strength than did the 2‐D fique weave composite. Scanning electron microscopy (SEM) confirmed that alkali‐treatment smoothened the fique fiber surface and reduced its diameter. This improved the area of contact between fique fiber tows and potassium geopolymer, thereby avoiding delamination problems, which would otherwise occur while preparing the composite using as‐received fique weave. The failure mode of the pressed tensile specimen was delamination, and unpressed samples underwent matrix cracking. Plate impact tests revealed that the fique composite had better impact properties than did alkali‐treated jute composite of Mf∼0.3. X‐ray diffraction confirmed the formation of geopolymer and thermogravimetric analysis confirmed the removal of hemicellulose on alkali‐treated fique. SEM images of fique composite cross section showed poor fiber‐matrix bonding.
Potassium Geopolymer Reinforced with Alkali‐Treated Fique
In this study, potassium geopolymer was reinforced with alkali‐treated unidirectional fique fibers and 2‐D fique weaves. Tensile and flexure measurements indicated that the unidirectional composite had higher tensile and flexure strength than did the 2‐D fique weave composite. Scanning electron microscopy (SEM) confirmed that alkali‐treatment smoothened the fique fiber surface and reduced its diameter. This improved the area of contact between fique fiber tows and potassium geopolymer, thereby avoiding delamination problems, which would otherwise occur while preparing the composite using as‐received fique weave. The failure mode of the pressed tensile specimen was delamination, and unpressed samples underwent matrix cracking. Plate impact tests revealed that the fique composite had better impact properties than did alkali‐treated jute composite of Mf∼0.3. X‐ray diffraction confirmed the formation of geopolymer and thermogravimetric analysis confirmed the removal of hemicellulose on alkali‐treated fique. SEM images of fique composite cross section showed poor fiber‐matrix bonding.
Potassium Geopolymer Reinforced with Alkali‐Treated Fique
Kriven, Waltraud M. (editor) / Zhu, Dongming (editor) / Moon, Kyoung II (editor) / Hwang, Taejin (editor) / Wang, Jingyang (editor) / Lewinsohn, Charles (editor) / Zhou, Yanchun (editor) / Sankar, Kaushik (author) / Kriven, Waltraud M. (author)
2014-12-19
18 pages
Article/Chapter (Book)
Electronic Resource
English
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