TY - JOUR
T1 - Amazonian metakaolin reactivity for geopolymer synthesis
AU - Sá Ribeiro, Ruy A.
AU - Sá Ribeiro, Marilene G.
AU - Kutyla, Gregory P.
AU - Kriven, Waltraud M.
N1 - Funding Information:
Collection and initial preparation of the Amazonian kaolinite were done at the Structural Engineering Laboratory (LTEE-INPA). SEM and XRD were carried out at the Frederick Seitz Materials Research Laboratory Central Facilities (FS-MRL) of UIUC. Compressive and flexural strength tests were carried out at the Ceramics Laboratory of UIUC. &is work was partially supported by the US Air Force Office of Scientific Research (AFOSR) through the Tyndall Air Force base in Florida under grant no. FA 8650-11-1-5900 and by CNPq—Conselho Nacional de Desen-volvimento Científico e Tecnológico—Brazil.
Publisher Copyright:
© 2019 Ruy A. Sá Ribeiro et al.
PY - 2019
Y1 - 2019
N2 - To determine the viability of using a local resource for geopolymer synthesis, geopolymers were synthesized using metakaolin made from clay mined in the Amazonian region of Brazil. Samples were made with mixed potassium-sodium and pure sodium metakaolin-based geopolymer. Samples were also made using commercial metakaolin (CMK) from BASF, Inc. as a comparison to the Amazonian metakaolin (AMK). Scanning electron microscopy was used to investigate the microstructure of the materials. X-ray diffraction was able to confirm the formation of geopolymer. The mechanical properties of AMK material were nearly equivalent to those based on CMK. Neither CMK nor AMK reacted completely, although samples made with CMK showed less unreacted material. By increasing the mixing intensity and duration, the amount of residual unreacted material was substantially reduced, and mechanical properties were improved.
AB - To determine the viability of using a local resource for geopolymer synthesis, geopolymers were synthesized using metakaolin made from clay mined in the Amazonian region of Brazil. Samples were made with mixed potassium-sodium and pure sodium metakaolin-based geopolymer. Samples were also made using commercial metakaolin (CMK) from BASF, Inc. as a comparison to the Amazonian metakaolin (AMK). Scanning electron microscopy was used to investigate the microstructure of the materials. X-ray diffraction was able to confirm the formation of geopolymer. The mechanical properties of AMK material were nearly equivalent to those based on CMK. Neither CMK nor AMK reacted completely, although samples made with CMK showed less unreacted material. By increasing the mixing intensity and duration, the amount of residual unreacted material was substantially reduced, and mechanical properties were improved.
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U2 - 10.1155/2019/8950764
DO - 10.1155/2019/8950764
M3 - Article
AN - SCOPUS:85060782202
SN - 1687-8434
VL - 2019
JO - Advances in Materials Science and Engineering
JF - Advances in Materials Science and Engineering
M1 - 8950764
ER -