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Tailing incorporation into mortars has been the subject of much research in recent years. Despite this, most of these studies did not investigate the harmful effects resulting from the exposure of such mortars to an environment containing aggressive agents. This work investigated the effects of perlite tailing addition into mortars containing cement CP V-ARI MAX and hydrated lime. The raw materials were subjected to chemical characterization (X-ray fluorescence (XRF)) and mineralogical (X-ray diffraction (XRD)), while the samples immersed in 1 N NaOH solution were characterized by XRD, thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and compression strength (CS). The results showed the harmful effects of incorporating perlite tailings into the mortar investigated. Such a degradation was proven by linear expansion and compressive strength experiments accomplished in the samples after the test of resistance to an alkali–silicate reaction.
Roberto Evaristo de Oliveira Neto; Juliana De Melo Cartaxo; Alisson Mendes Rodrigues; Gelmires De Araújo Neves; Romualdo Rodrigues Menezes; Fabiana Pereira da Costa; Sâmea Valensca Alves Barros. Durability Behavior of Mortars Containing Perlite Tailings: Alkali–Silicate Reaction Viewpoint. Sustainability 2021, 13, 9203 .
AMA StyleRoberto Evaristo de Oliveira Neto, Juliana De Melo Cartaxo, Alisson Mendes Rodrigues, Gelmires De Araújo Neves, Romualdo Rodrigues Menezes, Fabiana Pereira da Costa, Sâmea Valensca Alves Barros. Durability Behavior of Mortars Containing Perlite Tailings: Alkali–Silicate Reaction Viewpoint. Sustainability. 2021; 13 (16):9203.
Chicago/Turabian StyleRoberto Evaristo de Oliveira Neto; Juliana De Melo Cartaxo; Alisson Mendes Rodrigues; Gelmires De Araújo Neves; Romualdo Rodrigues Menezes; Fabiana Pereira da Costa; Sâmea Valensca Alves Barros. 2021. "Durability Behavior of Mortars Containing Perlite Tailings: Alkali–Silicate Reaction Viewpoint." Sustainability 13, no. 16: 9203.
Natural stones (limestones, granites, and marble) from mines located in northeastern Brazil were investigated to discover their potential for use in civil construction. The natural stones were characterized by chemical analysis, X-ray diffraction, differential thermal analysis, and optical microscopy. The physical-mechanical properties (apparent density, porosity, water absorption, compressive and flexural strength, impact, and abrasion) and chemical resistance properties were also evaluated. The results of the physical-mechanical analysis indicated that the natural stones investigated have the potential to be used in different environments (interior, exterior), taking into account factors such as people’s circulation and exposure to chemical agents.
Fabiana Costa; Jucielle Fernandes; Luiz Melo; Alisson Rodrigues; Romualdo Menezes; Gelmires Neves. The Potential for Natural Stones from Northeastern Brazil to Be Used in Civil Construction. Minerals 2021, 11, 440 .
AMA StyleFabiana Costa, Jucielle Fernandes, Luiz Melo, Alisson Rodrigues, Romualdo Menezes, Gelmires Neves. The Potential for Natural Stones from Northeastern Brazil to Be Used in Civil Construction. Minerals. 2021; 11 (5):440.
Chicago/Turabian StyleFabiana Costa; Jucielle Fernandes; Luiz Melo; Alisson Rodrigues; Romualdo Menezes; Gelmires Neves. 2021. "The Potential for Natural Stones from Northeastern Brazil to Be Used in Civil Construction." Minerals 11, no. 5: 440.
In this study, we develop ceramic formulations based on quartzite and scheelite tailings collected from mining companies in the northeast of Brazil (Rio Grande do Norte State). New ceramic samples (27 wt% of kaolin, 29 wt% of plastic clay, 11 wt% of quartzite tailing, and 0–8 wt% scheelite tailing) were uniaxially pressed in two steps (20 MPa and 50 Mpa for 20 s); dried at 110 °C for 24 h; and sintered at 1150 °C, 1200 °C, and 1250 °C. The main mineralogical phases (mullite, quartz, calcite, and anorthite) of the sintered samples were identified using X-ray diffraction (XRD). After evaluation of the physical-mechanical properties (water absorption, linear shrinkage, apparent porosity, and flexural strength), it was observed that the incorporation of scheelite tailing by up to 8 wt% did not significantly alter the properties of samples sintered at all temperatures. Our results indicate that the new ceramics formulations developed have strong potentials in manufacturing sustainable materials such as ceramic tiles and porcelain stoneware.
Jucielle Fernandes; Danyelle Guedes; Fabiana Da Costa; Alisson Rodrigues; Gelmires Neves; Romualdo Menezes; Lisiane Santana. Sustainable Ceramic Materials Manufactured from Ceramic Formulations Containing Quartzite and Scheelite Tailings. Sustainability 2020, 12, 9417 .
AMA StyleJucielle Fernandes, Danyelle Guedes, Fabiana Da Costa, Alisson Rodrigues, Gelmires Neves, Romualdo Menezes, Lisiane Santana. Sustainable Ceramic Materials Manufactured from Ceramic Formulations Containing Quartzite and Scheelite Tailings. Sustainability. 2020; 12 (22):9417.
Chicago/Turabian StyleJucielle Fernandes; Danyelle Guedes; Fabiana Da Costa; Alisson Rodrigues; Gelmires Neves; Romualdo Menezes; Lisiane Santana. 2020. "Sustainable Ceramic Materials Manufactured from Ceramic Formulations Containing Quartzite and Scheelite Tailings." Sustainability 12, no. 22: 9417.
Glass-ceramics foams (GCs foams) were manufactured with the aid of the replica method and from cheap and sustainable raw materials (waste glass bottle, bentonite, and alumina). In order to evaluate the Al2O3 effect on the microstructure and physico-chemical properties of the GCs foams, the precursor aqueous solutions were prepared with different contents of the waste glass bottles (30 wt% and 35 wt%), alumina (0 wt%, 2 wt%, 5 wt%, and 8 wt%), and sintered at temperatures 750 °C and 800 °C. The amorphous/crystalline nature of the GCs foams was investigated by XRD, and the calcium sodium silicate (Na2Ca3Si6O16), cristobalite, and corundum were the main crystalline phases identified. In general, the addition of alumina increased porosity and water absorption with a consequent reduction in flexural strength. The manufactured glass-ceramic foams showed average pore sizes in the range of 240–360 μm, porosity between 52% and 85%, and flexural strength between 0.2 MPa and 3.7 MPa.
Fabiana Pereira da Costa; Crislene Rodrigues Da Silva Morais; Haroldo Cavalcanti Pinto; Alisson Mendes Rodrigues. Microstructure and physico-mechanical properties of Al2O3-doped sustainable glass-ceramic foams. Materials Chemistry and Physics 2020, 256, 123612 .
AMA StyleFabiana Pereira da Costa, Crislene Rodrigues Da Silva Morais, Haroldo Cavalcanti Pinto, Alisson Mendes Rodrigues. Microstructure and physico-mechanical properties of Al2O3-doped sustainable glass-ceramic foams. Materials Chemistry and Physics. 2020; 256 ():123612.
Chicago/Turabian StyleFabiana Pereira da Costa; Crislene Rodrigues Da Silva Morais; Haroldo Cavalcanti Pinto; Alisson Mendes Rodrigues. 2020. "Microstructure and physico-mechanical properties of Al2O3-doped sustainable glass-ceramic foams." Materials Chemistry and Physics 256, no. : 123612.
Glass-ceramic foams were manufactured with waste glass bottle (85.7 wt%, 87.5 wt%, and 88.9 wt%) and bentonite. The raw materials were characterized by Energy-dispersive X-ray spectroscopy (EDX) and thermal gravimetric analysis (TGA). The thermal treatment to obtain the glass-ceramic foams were conducted to eliminate the polyurethane without damaging their structure. The glass-ceramic foams sintering was performed at 750 °C, 800 °C, and 850 °C. The macro and microanalysis (optical microscopy) showed a significant porosity reduction, in the samples with higher waste glass contents. Pore closure also was found in samples sintered at 850 °C. In both cases, the pore closure resulted from melting of the glass-ceramic foam. The X-ray diffraction results show that the calcium sodium silicate (Na2Ca3Si6O16) was the main crystalline phase. The physico-mechanical properties (linear shrinkage-LS, loss of mass on fire-LMF, water absorption-WA, apparent porosity-AP, bulk density-BD, and flexural strength-σf) were evaluated for glass-ceramics foams containing 85.7 wt% and 87.5 wt% of waste glass, sintered at 750 °C and 800 °C. The glass-ceramic foams sintered at 750 °C showed an average pore size of 275 μm and 330 μm, porosity of 65.1% and 39.8% and flexural strength of 0.32 MPa and 1.42 MPa for samples containing 85.7 wt% and 87.5 wt% waste glass, respectively. Already sintered foams at 800 °C, the average pore size was 283 μm and 239 μm, the porosity of 37.7% and 18.8% and the flexural strength of 1.90 MPa and 3.77 MPa for samples containing 85.7 wt% and 87.5 wt% waste glass, respectively. In general, the LMF, PA and WA values decrease with the increasing temperature, while the BD, LS, and σf values increase with temperature.
Fabiana Pereira da Costa; Crislene Rodrigues Da Silva Morais; Alisson Mendes Rodrigues. Sustainable glass-ceramic foams manufactured from waste glass bottles and bentonite. Ceramics International 2020, 46, 17957 -17961.
AMA StyleFabiana Pereira da Costa, Crislene Rodrigues Da Silva Morais, Alisson Mendes Rodrigues. Sustainable glass-ceramic foams manufactured from waste glass bottles and bentonite. Ceramics International. 2020; 46 (11):17957-17961.
Chicago/Turabian StyleFabiana Pereira da Costa; Crislene Rodrigues Da Silva Morais; Alisson Mendes Rodrigues. 2020. "Sustainable glass-ceramic foams manufactured from waste glass bottles and bentonite." Ceramics International 46, no. 11: 17957-17961.