Pub Date : 2022-06-01DOI: 10.1590/0366-69132022683863223
H. D. S. Carvalho, J. Rocha, M. Cheriaf
{"title":"Influence of bottom ash and red mud additions on self-leveling underlayment properties","authors":"H. D. S. Carvalho, J. Rocha, M. Cheriaf","doi":"10.1590/0366-69132022683863223","DOIUrl":"https://doi.org/10.1590/0366-69132022683863223","url":null,"abstract":"","PeriodicalId":9824,"journal":{"name":"Cerâmica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67184790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-01DOI: 10.1590/0366-69132022683863213
L. F. T. Domingos, A. S. Azevedo, K. Strecker
The study on the physical-mechanical properties of alkali-activated materials (AAM) produced by the ‘one-part’ method was carried out. For this, residues such as fly ash and rice husk ash (RHA) were used. The alkaline activator (NaOH) was calcined together with RHA for 2 h at 750 °C. Dry mixes were prepared by replacing fly ash with 10%, 20%, and 30% by weight of the calcined material. The samples produced were characterized after 7 and 28 days of curing. The results showed that the investigated variables (calcined material content and curing time at room temperature) were responsible for important variations: compressive strength from 2.40 to 24.92 MPa, modulus of elasticity from 0.90 to 12.32 GPa, water absorption from 2.92% to 13.64%, apparent porosity from 4.82% to 20.02%, and density from 1.48 to 1.71 g/cm 3 . It was concluded that these variations were due to the high concentration of Na 2 O and SiO 2 in the dry mixtures.
{"title":"Physical-mechanical behavior of alkali-activated materials produced by the one-part method based on fly ash and rice husk ash","authors":"L. F. T. Domingos, A. S. Azevedo, K. Strecker","doi":"10.1590/0366-69132022683863213","DOIUrl":"https://doi.org/10.1590/0366-69132022683863213","url":null,"abstract":"The study on the physical-mechanical properties of alkali-activated materials (AAM) produced by the ‘one-part’ method was carried out. For this, residues such as fly ash and rice husk ash (RHA) were used. The alkaline activator (NaOH) was calcined together with RHA for 2 h at 750 °C. Dry mixes were prepared by replacing fly ash with 10%, 20%, and 30% by weight of the calcined material. The samples produced were characterized after 7 and 28 days of curing. The results showed that the investigated variables (calcined material content and curing time at room temperature) were responsible for important variations: compressive strength from 2.40 to 24.92 MPa, modulus of elasticity from 0.90 to 12.32 GPa, water absorption from 2.92% to 13.64%, apparent porosity from 4.82% to 20.02%, and density from 1.48 to 1.71 g/cm 3 . It was concluded that these variations were due to the high concentration of Na 2 O and SiO 2 in the dry mixtures.","PeriodicalId":9824,"journal":{"name":"Cerâmica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67184999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-01DOI: 10.1590/0366-69132022683853152
L. J. Cardenas-Flechas, J. Barba-Ortega, M. Joya
{"title":"Analysis and evaluation of structural properties of Co3O4 microparticles obtained at low temperature","authors":"L. J. Cardenas-Flechas, J. Barba-Ortega, M. Joya","doi":"10.1590/0366-69132022683853152","DOIUrl":"https://doi.org/10.1590/0366-69132022683853152","url":null,"abstract":"","PeriodicalId":9824,"journal":{"name":"Cerâmica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67184231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-01DOI: 10.1590/0366-69132022683853175
M. S. L. Rosa, R. A. O. Silva, P. E. A. Sousa, R. T. Nascimento, T. Knoerzer, M. C. D. Santos
{"title":"Doxazosin adsorption in natural, expanded, and organophilized vermiculite-rich clays","authors":"M. S. L. Rosa, R. A. O. Silva, P. E. A. Sousa, R. T. Nascimento, T. Knoerzer, M. C. D. Santos","doi":"10.1590/0366-69132022683853175","DOIUrl":"https://doi.org/10.1590/0366-69132022683853175","url":null,"abstract":"","PeriodicalId":9824,"journal":{"name":"Cerâmica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67184577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-01DOI: 10.1590/0366-69132022683853241
M. D. C. R. D. Silva, D. Bertuol, P. P. Lopes
{"title":"Characterization and potential applications of new boron-phosphate glass in the CaO-P2O5-K2O-B2O3 system","authors":"M. D. C. R. D. Silva, D. Bertuol, P. P. Lopes","doi":"10.1590/0366-69132022683853241","DOIUrl":"https://doi.org/10.1590/0366-69132022683853241","url":null,"abstract":"","PeriodicalId":9824,"journal":{"name":"Cerâmica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48573506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-01DOI: 10.1590/0366-69132022683853178
C. G. Renda, C. Oliveira, R. Bertholdo
{"title":"Study of nanocomposites with carbon nanotubes and their tendency for carbon organization","authors":"C. G. Renda, C. Oliveira, R. Bertholdo","doi":"10.1590/0366-69132022683853178","DOIUrl":"https://doi.org/10.1590/0366-69132022683853178","url":null,"abstract":"","PeriodicalId":9824,"journal":{"name":"Cerâmica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67184245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-01DOI: 10.1590/0366-69132022683853169
J. Bertoldi, R. Marangoni, L. Zatta
Resumo Materiais baseados em oxi-hidróxidos mistos de alumínio e ferro (III) foram preparados pela síntese hidrotérmica a partir da ureia, sais de nitrato ou cloreto e em diferentes razões molares Al3+:Fe3+. Foram avaliadas as propriedades estruturais, morfológicas e térmicas dos materiais. As misturas de nitratos de Al3+ e Fe3+ conduziram à formação da hematita enquanto que nos materiais obtidos a partir dos cloretos, diferentes fases cristalinas de Fe3+ foram identificadas. Para o comportamento térmico observou-se que, independente do ânion dos precursores, a amostras de composição 30%:70% (Al3+:Fe3+) se diferenciaram das demais. Após a calcinação, a fase hematita foi identificada em todas as amostras. Os sais precursores e as razões Al3+:Fe3+ refletiram em diferenças entre as amostras nas propriedades avaliadas. Pelos resultados observados, a ocorrência de substituições isomórficas de Fe3+ pelo Al3+ na fase hematita foi identificada, o que proporcionou alterações nas propriedades avaliadas em relação ao material sem a presença de Al3+.
{"title":"Caracterização de oxi-hidróxidos e óxidos mistos de Fe-Al obtidos por síntese hidrotérmica empregando nitratos, cloretos e ureia como precursores","authors":"J. Bertoldi, R. Marangoni, L. Zatta","doi":"10.1590/0366-69132022683853169","DOIUrl":"https://doi.org/10.1590/0366-69132022683853169","url":null,"abstract":"Resumo Materiais baseados em oxi-hidróxidos mistos de alumínio e ferro (III) foram preparados pela síntese hidrotérmica a partir da ureia, sais de nitrato ou cloreto e em diferentes razões molares Al3+:Fe3+. Foram avaliadas as propriedades estruturais, morfológicas e térmicas dos materiais. As misturas de nitratos de Al3+ e Fe3+ conduziram à formação da hematita enquanto que nos materiais obtidos a partir dos cloretos, diferentes fases cristalinas de Fe3+ foram identificadas. Para o comportamento térmico observou-se que, independente do ânion dos precursores, a amostras de composição 30%:70% (Al3+:Fe3+) se diferenciaram das demais. Após a calcinação, a fase hematita foi identificada em todas as amostras. Os sais precursores e as razões Al3+:Fe3+ refletiram em diferenças entre as amostras nas propriedades avaliadas. Pelos resultados observados, a ocorrência de substituições isomórficas de Fe3+ pelo Al3+ na fase hematita foi identificada, o que proporcionou alterações nas propriedades avaliadas em relação ao material sem a presença de Al3+.","PeriodicalId":9824,"journal":{"name":"Cerâmica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67184370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-01DOI: 10.1590/0366-69132022683853174
F. Teixeira, V. N. Lima, D. J. C. Moutinho, R. Fujiyama
{"title":"Mechanical properties and fractography of cement-based composites reinforced by natural piassava and jute fibers","authors":"F. Teixeira, V. N. Lima, D. J. C. Moutinho, R. Fujiyama","doi":"10.1590/0366-69132022683853174","DOIUrl":"https://doi.org/10.1590/0366-69132022683853174","url":null,"abstract":"","PeriodicalId":9824,"journal":{"name":"Cerâmica","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67184486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-01DOI: 10.1590/0366-69132022683853052
P. Souza, E. Nascimento, L. Melo, H. A. Oliveira, V. G. O. Almeida, F. M. C. Melo
{"title":"Study for the incorporation of wood ash in soil-cement brick","authors":"P. Souza, E. Nascimento, L. Melo, H. A. Oliveira, V. G. O. Almeida, F. M. C. Melo","doi":"10.1590/0366-69132022683853052","DOIUrl":"https://doi.org/10.1590/0366-69132022683853052","url":null,"abstract":"","PeriodicalId":9824,"journal":{"name":"Cerâmica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67184606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-03-01DOI: 10.1590/0366-69132022683853181
E. Abdelkader, L. Nadjia, B. Naceur, L. Favier-Teodorescu
{"title":"Thermal, structural and optical properties of magnetic BiFeO3 micron-particles synthesized by coprecipitation method: heterogeneous photocatalysis study under white LED irradiation","authors":"E. Abdelkader, L. Nadjia, B. Naceur, L. Favier-Teodorescu","doi":"10.1590/0366-69132022683853181","DOIUrl":"https://doi.org/10.1590/0366-69132022683853181","url":null,"abstract":"","PeriodicalId":9824,"journal":{"name":"Cerâmica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49123920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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