This study describes the chemical composition and biological activities of extracts and compounds obtained from the roots of Bowdichia virgilioides (Fabaceae). A mixture of very long-chain free fatty acids (VLFAs) and pure compounds, namely isocordoin, cordoin, lupeol, lupenone, β-sitosterol, stigmasterol, and sitostenone, were isolated from the soluble fraction of the methanol extract by using sequential column chromatography procedures. The molecular structures of the compounds were determined using infrared (IR), nuclear magnetic resonance (NMR), and mass spectrometry (MS) techniques. Notably, this is the first report of the occurrence of both chalcones within this plant genus. Besides, the VLFAs were identified by electrospray ionization mass spectrometry (ESIMS) and the presence of these compounds in roots is suggested to be an adaptive response to environmental stress, which exhibited moderate antioxidant properties when tested against the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical and in the β-carotene/linolenic acid auto-oxidation assay. However, the MeOH soluble fraction demonstrated significant toxicity in the brine shrimp lethality assay. Fabaceae. Fabaceae . (Fabaceae) longchain long chain (VLFAs isocordoin cordoin lupeol lupenone βsitosterol, βsitosterol β sitosterol, sitosterol β-sitosterol stigmasterol sitostenone procedures IR, IR , (IR) NMR, NMR (NMR) MS (MS techniques Notably genus Besides ESIMS (ESIMS stress 2,2diphenyl1picrylhydrazyl 22diphenyl1picrylhydrazyl diphenylpicrylhydrazyl 2,2 diphenyl 1 picrylhydrazyl 2 DPPH (DPPH βcarotene/linolenic βcarotenelinolenic carotene/linolenic carotene linolenic autooxidation auto oxidation assay However (Fabaceae (IR (NMR 2diphenyl1picrylhydrazyl 22 2, βcarotene carotenelinolenic

This study highlights the synthesis of innovative polyurethane materials derived from Moringa oleifera oils extracted from two distinct sources. The oils were converted into their respective polyols through the in situ generated performic acid method. Diverse material characteristics were observed due to different agroclimatic and cultivation conditions for the sources. Extraction yields were 45.21% (source 1) and 40.32% (source 2), with acid values of 28.70 and 26.00 mg KOH per g of oil, respectively. Oleic acid constituted 79.87 and 67.11% of the oils composition, respectively. Nuclear magnetic resonance and Fourier transform infrared spectroscopy (FTIR) confirmed the hydroxylation of the oils. FTIR also identified the isocyanate structures in the synthesized polyurethane materials. Gel permeation chromatography analysis revealed a higher oligomer content in the polyol synthesized from the oil extracted from source 2. Thermogravimetric analysis demonstrated enhanced thermal stability post-oil conversion, highlighting decomposition stages for rigid and flexible segments. Differential scanning calorimetry indicated higher unsaturation in the oil extracted from source 1, resulting in an elevated crystallization temperature. Tensile testing showed increased elasticity as the [NCO]/[OH] ratio decreased in the material, emphasizing the influence of polyol and crosslinking agent concentrations on mechanical resistance of polyurethane materials. sources method 4521 45 21 45.21 1 4032 40 32 40.32 2, 2 , 2) 2870 28 70 28.7 2600 26 00 26.0 respectively 7987 79 87 79.8 6711 67 11 67.11 composition (FTIR postoil post conversion segments temperature NCO/OH NCOOH NCO / OH [NCO]/[OH 452 4 45.2 403 3 40.3 287 7 28. 260 0 26. 798 8 79. 671 6 67.1 45. 40. 67.

The essential oil extracted from Anemia tomentosa (EOAT) has shown larvicidal potential against Aedes aegypti, based on methods in vitro and in silico. Chromatographic and spectrometric techniques (gas chromatography-mass spectrometry (CG-MS), gas chromatography-flame ionization detector (GC-FID)), as well as mono and bidimensional nuclear magnetic resonance spectroscopy (NMR) were used to assess 10 essential oil components. Chemical composition of essential oil comprised 87.51% sesquiterpenes, with emphasis on presilphiperfolan-1-ol (42.13%) and silphiperfol-5-ene (19.47%). Larvicidal assay conducted in vitro with EOAT has evidenced potential cytotoxic activity up to 48 h exposure to it; mortality rate observed for A. aegypti larvae exposed to essential oil reached 100%. Study conducted in silico with chemical compounds deriving from the herein investigated plant species has evidenced its potential to inhibit acetylcholinesterase in A. aegypti. Activity of triquinane sesquiterpenes ranging from -6.8 to -8.2 kcal mol-1 stood out in comparison to that of temephos (-7.5 kcal mol-1). Chemical compounds identified in the investigated essential oil presented low human and environmental toxicity, as observed in absorption, distribution, metabolism and excretion, and toxicity (ADMETox) predictions. (EOAT chromatographymass chromatography mass CGMS, CGMS CG MS , (CG-MS) chromatographyflame flame GCFID, GCFID GC FID (GC-FID)) NMR (NMR 1 components 8751 87 51 87.51 presilphiperfolan1ol presilphiperfolanol presilphiperfolan ol 42.13% 4213 42 13 (42.13% silphiperfol5ene silphiperfolene silphiperfol 5 ene 19.47%. 1947 19.47% . 19 47 (19.47%) 4 it A 100 100% 6.8 68 6 8 -6. 8.2 82 2 -8. mol1 mol mol- 7.5 75 7 (-7. mol1. mol-1) absorption distribution excretion ADMETox (ADMETox predictions (CG-MS (GC-FID) 875 87.5 42.13 421 (42.13 194 19.47 (19.47% 6. -6 8. -8 7. (-7 (GC-FID 87. 42.1 (42.1 19.4 (19.47 - (- 42. (42. 19. (19.4 ( (42 (19. (4 (19 (1

This study aimed to isolate, purify and characterize secondary metabolites present in Amburana acreana leaves, native to the state of Rondônia, using classical chromatographic methods and 1D, 2D nuclear magnetic resonance spectroscopy. From the hydroethanolic leaves extract of A. acreana, p-hydroxybenzoic acid, vanillic acid, coumarin, campesterol 3-β-D-glucoside and amburoside B, all known compounds, were identified. To the best of our knowledge, this is the first report of isolation and chemical characterization of secondary metabolites in A. acreana. In addition, in vitro assays indicated that amburoside B does not have inhibitory potential on the growth of gram-negative bacteria. The presence of these compounds suggests that, thus far, amburosides (A and B) could be chemotaxonomic markers of the genus Amburana. isolate Rondônia 1D D spectroscopy A phydroxybenzoic p hydroxybenzoic acid coumarin 3βDglucoside βDglucoside 3 β glucoside identified knowledge addition gramnegative gram negative bacteria far

This study aims to propose a new method for derivatizing fatty acids (FAs) from human milk (HM), eliminating the lipid extraction step, and simplifying the preparation for gas chromatography with a flame ionization detection (GC-FID) analysis to quantify the FAs. The Design Expert software optimized the reaction times, concentrations, and sample amount. The proposed method (PM) was validated for lyophilized HM and results for the figures of merit for precision in relative standard deviation (RSD) (RSDintra-day 1.34-4.03% and RSDinter day 2.08 5.16%), accuracy (99.87-102.16%), and robustness are within a linear range of 3 to 38% lipids in HM samples. The atmospheric solids analysis probe tandem mass spectrometry (ASAP-MS/MS) technique confirmed the efficiency of PM by expressing the molecular composition of triacylglycerol formed by FAs from the GC-FID technique. The PM requires a small sample size and conducts derivatization directly in the sample matrix, minimizing extraction errors. (FAs HM, , (HM) step GCFID GC FID (GC-FID times concentrations amount (PM RSD (RSD RSDintraday RSDintra 1.344.03% 134403 1.34 4.03% 1 34 4 03 1.34-4.03 208 2 08 2.0 5.16%, 516 5.16% 5 16 5.16%) 99.87102.16%, 998710216 99.87 102.16% 99 87 102 (99.87-102.16%) 38 samples ASAPMS/MS ASAPMSMS ASAP MS/MS MS (ASAP-MS/MS matrix errors (HM 344 1.344.03 13440 134 1.3 403 4.03 0 1.34-4.0 20 2. 51 5.16 87102 99.87102.16% 99871021 9987 99.8 10216 102.16 9 8 10 (99.87-102.16% ASAPMS MSMS 1.344.0 1344 13 1. 40 4.0 1.34-4. 5.1 8710 99.87102.16 9987102 998 99. 1021 102.1 (99.87-102.16 1.344. 4. 1.34-4 5. 871 99.87102.1 998710 102. (99.87-102.1 1.344 1.34- 99.87102. 99871 (99.87-102. 99.87102 (99.87-102 99.8710 (99.87-10 99.871 (99.87-1 (99.87- (99.87 (99.8 (99. (99 (9 (

Protium ovatum Eng. Burseraceae is an endemic species in Brazil used in traditional medicine. This study investigated the chemical variation and the in vitro antioxidant and antimicrobial properties of dichloromethane soluble fraction of hydrolate (DSFH) from leaves of P. ovatum collected from five different vegetation physiognomies within the Cerrado Goiano. The region was characterized based on the DSFH chemical composition by gas chromatography coupled to mass spectrometry (GC-MS) analysis. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) were performed to compare the different DSFHs from five Savannah regions in Brazil. The DSFHs from the Cerrado stricto sensu (CSS), Mata de Galeria (MG) and Cerradão (C) regions were grouped in the negative part of PC1, showing high similarity. Samples from the C and MG regions showed antioxidant activity of IC50 = 0.98 and 0.78 mg mL-1, respectively, and 0.250 mg mL-1 of butylated hydroxytoluene (positive control). DSFH from different regions exhibited antifungal activity against Candida albicans. The results show that the chemical composition and the biological activity of DSFHs can be affected according to the area of collection. Eng medicine (DSFH P Goiano GCMS GC MS (GC-MS PCA (PCA HCA (HCA CSS, CSS , (CSS) (MG (C PC1 PC similarity IC IC5 098 0 98 0.9 078 78 0.7 mL1, mL1 mL 1, 1 respectively 0250 250 0.25 mL- positive control. control . control) albicans collection (CSS 09 9 0. 07 7 025 25 0.2 02 2

In the Amazon, Euterpe oleracea Mart. (açaí), is part of the identity of traditional communities, and the fruit is integrated into their everyday sociocultural dynamics. Hydrolysis and pyrolysis of residual biomass can be alternatives to yield sugars, ethanol, biochar and bio-oil. The açaí seeds subjected to oxidative pretreatment followed by acid hydrolysis increased cellulose to fermentable sugars (reaching 23.5%) and second-generation ethanol production (17.441 L t−1). Açaí oil (ca. 30%) was extracted using a Soxhlet apparatus (using hexane as solvent) and detected through gas chromatography coupled to mass spectrometry (GC-MS), where acids accounted for 82.43% of the total composition, while alcohols comprised only 13.15%. For pyrolysis, temperatures (500 and 550 °C), time (20 and 30 min), and activation temperature (750 and 800 °C) were evaluated, resulting in yields of ca. 22% for biochar and 30% for bio-oil. For the bio-oil, the main compounds detected by GC-MS were acids (16.3%), aldehydes (13.08%), amides (12.19%), alcohols (6.72%), and phenols (4.64%). The obtained biochar displayed surface area values of 553.7 m2 g−1 and 10% crystallinity, indicating its more amorphous nature. Amazon Mart açaí, , (açaí) communities dynamics biooil. biooil bio oil. bio-oil reaching 23.5% 235 23 5 secondgeneration second generation 17.441 17441 17 441 (17.44 t−1. t1 t t−1 . 1 t−1) ca (ca solvent GCMS, GCMS GC MS (GC-MS) 8243 82 43 82.43 composition 1315 13 15 13.15% 500 (50 55 °C, C °C 20 (2 3 min, min min) 750 (75 80 evaluated 22 biooil, oil, 16.3%, 163 16.3% 16 (16.3%) 13.08%, 1308 13.08% 08 (13.08%) 12.19%, 1219 12.19% 12 19 (12.19%) 6.72%, 672 6.72% 6 72 (6.72%) 4.64%. 464 4.64% 4 64 (4.64%) 5537 553 7 553. m g1 g g− 10 crystallinity nature (açaí 23.5 2 17.44 1744 44 (17.4 t− (GC-MS 824 8 82.4 131 13.15 50 (5 ( 75 (7 16.3 (16.3% 130 13.08 0 (13.08% 121 12.19 (12.19% 67 6.72 (6.72% 46 4.64 (4.64% 23. 17.4 174 (17. 82. 13.1 16. (16.3 13.0 (13.08 12.1 (12.19 6.7 (6.72 4.6 (4.64 17. (17 13. (16. (13.0 12. (12.1 6. (6.7 4. (4.6 (1 (16 (13. (12. (6. (4. (13 (12 (6 (4

Lantana caatingensis Moldenke (Verbenaceae) is an endemic plant from northeastern Brazil. However, its chemical composition is almost unknown. This study aimed to characterize the chemical compounds found in L. caatingensis and investigate the antileishmanial potential of its hydroalcoholic extract and polar fractions. Compounds present in the hydroalcoholic extract obtained from L. caatingensis leaves and its polar fractions (ethyl acetate and methanolic) were analyzed by liquid chromatography with a photodiode-array detector coupled to electrospray ionization quadrupole time-of-flight mass spectrometry. An antileishmanial assay was performed in a 96-well plate against Leishmania major promastigotes using resazurin on a plate spectrophotometer and the results were expressed as percentage of growth inhibition. Nine compounds were determined in the investigated extract and fractions, classified as flavonoids, flavonoid C-glycosides and phenylethanoid glycosides. The antileishmanial activity revealed that the hydroalcoholic extract and the ethyl acetate fraction were active against L. major promastigotes with inhibitory concentration of 71.78 and 26.86 µg mL-1, respectively, while the methanolic fraction was inactive (478.40 µg mL-1). This is the first report on the chemical composition and antileishmanial activity of L. caatingensis extracts. These results contribute to further knowledge of species belonging to the Lantana genus. Verbenaceae (Verbenaceae Brazil However unknown L photodiodearray photodiode array timeofflight time flight spectrometry 96well well 96 inhibition flavonoids Cglycosides C glycosides 7178 71 78 71.7 2686 26 86 26.8 mL1, mL1 mL 1, 1 mL-1 respectively 478.40 47840 478 40 (478.4 mL1. . mL-1) extracts genus 9 717 7 71. 268 2 8 26. mL- 478.4 4784 47 4 (478. 478. (478 (47 (4 (

Layered double hydroxides (LDHs) and related materials have been studied for a long time and their application in catalytic processes remain attractive due to the tuned properties, morphologies and metal-support interactions obtained from a variety of composition and synthesis route. In this mini-review, some important reactions, such as photocatalysis, electrocatalysis, reduction, carbon-carbon cross-couplings and water-gas shift will be emphasized along with the role of LDHs as catalysts, co-catalysts or catalytic precursors when it was clearly indicated. (LDHs properties metalsupport metal support route minireview, minireview mini review, review mini-review reactions photocatalysis electrocatalysis reduction carboncarbon carbon crosscouplings cross couplings watergas water gas catalysts cocatalysts co indicated

Two poly(acrylic acid-b-acrylamide) copolymers, and a poly(acrylic acid) homopolymer were synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization and tested for nickel removal from aqueous media. RAFT was used for better interchain composition homogeneity and to facilitate the synthesis of the block copolymers. Liquid-phase polymer-based retention (LPR) was used to compare the nickel binding capacity. Uptake tests were carried out at pH 3.0, 4.0, and 5.0. Nickel adsorption isotherms in the range of 1 to 7 mmol L−1 were achieved and the Langmuir adsorption model was applied. Maximum binding capacity (Qm) of Ni2+ at 298 K depended on the composition of the copolymers and pH. The polyacid block (PAA) was the major structural feature responsible for high values of nickel binding. All materials presented better uptake at higher pH, probably due to polyacid deprotonation and the increase in the electrostatic interactions. Up to approximately 100 mg of nickel per gram of homopolymer could be retained at pH = 5.0. Even though the presence of a poly(acrylamide) block decreases the binding capacity compared to PAA, that block has a specific contribution to nickel binding and can also provide better features to the material as better solubilization, and others. polyacrylic poly acrylic acidbacrylamide acid b acrylamide acid-b-acrylamide additionfragmentation addition fragmentation (RAFT media Liquidphase Liquid phase polymerbased polymer based LPR (LPR 30 3 0 3.0 40 4 4.0 50 5 5.0 L1 L L− applied Qm (Qm Ni2 Ni 29 PAA (PAA interactions 10 polyacrylamide poly(acrylamide solubilization others 3. 4. 5. 2

Silver film is commonly used to examine the structure and composition of molecules due to its surface-enhanced Raman scattering (SERS) effect. A simple method for preparing SERS silver films is proposed in this paper by electrodeposition in an amide-based liquid mixture (urea-acetamide-LiBr). The electrochemical behavior of silver in urea-acetamide-LiBr mixture was studied by cyclic voltammetry (CV) and chronoamperometry. It was found that the nucleation mechanism of silver shifts to instantaneous nucleation under diffusion control with increasing overpotential and temperature. The energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) investigations confirmed that the obtained deposits are pure silver. Scanning electron microscopy (SEM) analysis showed that the morphology of the silver deposits depends on the deposition potential and temperature. Rhodamine 6G was used as probe molecules for SERS experiments, showing that these new active substrates have high sensitivity to SERS response with high enhancement factors, of approximately 107, and enable Raman scattering even for diluted solutions. surfaceenhanced surface enhanced (SERS effect amidebased amide based ureaacetamideLiBr. ureaacetamideLiBr urea acetamide LiBr . (urea-acetamide-LiBr) CV (CV chronoamperometry temperature EDS (EDS Xray X ray XRD (XRD SEM (SEM G experiments factors 107 solutions (urea-acetamide-LiBr 10 1

The present study analyzed the chemical composition and phytotoxic activity of Artemisia lancea essential oil (EO). Gas chromatography-mass spectrometry (GC-MS) results showed the presence of 55 compounds, representing 82.36% of the entire EO, with eucalyptol (18.7%) being the most abundant constituent. Phytotoxic bioassay results indicated that the EO (concentration ranging from 0.25-5 mg mL−1) inhibited the growth of Amaranthus retroflexus and Setaria viridis. Root length of A. retroflexus and S. viridis were reduced with the increasing concentration of the EO, especially when the EO was applied at 1-5 mg mL−1. When treated with 1-5 mg mL−1 EO, shoot length of A. retroflexus and S. viridis were also significantly suppressed. The half maximal inhibitory concentration (IC50) values for inhibiting root and shoot growth of A. retroflexus by the EO were 0.284 and 0.246 mg mL−1; for S. viridis, the EO showed IC50 values of 0.44 and 0.262 mg mL−1 for root and shoot inhibition, respectively. The most promising findings were observed when A. lancea EO concentration reached 1 mg mL−1 and higher, which completely inhibited seed germination of A. retroflexus and S. viridis. These findings suggest A. lancea EO has potential as an eco-friendly bioherbicide for agricultural weed control. EO. . (EO) chromatographymass chromatography mass GCMS GC MS (GC-MS 5 compounds 8236 82 36 82.36 18.7% 187 18 7 (18.7% constituent 0.255 0255 0.25 0 25 0.25- mL1 mL A S 15 1- mL− suppressed IC (IC50 0284 284 0.28 0246 246 0.24 IC5 044 44 0.4 0262 262 0.26 inhibition respectively higher ecofriendly eco friendly control (EO 823 8 3 82.3 18.7 (18.7 255 025 0.2 2 (IC5 028 28 024 24 04 4 0. 026 26 82. 18. (18. 02 (IC (18 (1 (

Abstract Concrete is a material susceptible to different degradation mechanisms that can lead to the formation of expansive products resulting from external sulfate attack (ESA). In this context, supplementary cementing materials (SCMs), like fly ash, metakaolin, silica fume, and rice husk ash, have effectively suppressed the effects caused by ESA. However, each SCM may present different behavior depending on the exposure conditions, sulfate type, SO 4 2- concentration, etc. Thus, this study presents a multicriteria decision-making analysis of fixed binder content for mortars (1: 3.2 a/agl=0.60) aiming to achieve the best performance against ESA (exposure to Na 2 SO 4 or MgSO 4 ). The criteria selected for the decision-making analysis are the sustainability impact of the mixture, economic performance, and the effect of ESA on the mechanical properties and durability of the mortars. The results indicate that the most suitable composition for aggressive environments containing Na 2 SO 4 was the mortar containing 10% rice husk ash and, for exposure to MgSO 4 , the use of fly ash in the same proportion. . (ESA) context SCMs, SCMs (SCMs) metakaolin fume However conditions type concentration etc Thus decisionmaking decision making 1 (1 32 3 3. a/agl=0.60 aagl060 aagl agl 0 60 ) mixture 10 proportion (ESA (SCMs ( a/agl=0.6 aagl06 6 a/agl=0. aagl0 a/agl=0 a/agl= a/agl

Resumo O concreto é um material suscetível a diferentes mecanismos de degradação que podem causar a formação de produtos expansivos, como o ataque externo por sulfatos. As adições minerais, como a cinza volante, o metacaulim, a sílica ativa e a sílica de casca de arroz são opções que possuem sua eficácia comprovada em argamassas e concretos expostos a ambientes com sulfatos. O presente estudo busca, por meio de um método de análise multicritérios de decisão, realizar a escolha do teor de aglomerante em argamassas (1: 3,2 a/agl=0,60) que apresentar melhor desempenho frente ao ataque externo por sulfato de sódio (Na2SO4) e magnésio (MgSO4). Tendo uma base de dados pré-definida, foram escolhidos critérios e subcritérios para composição da matriz hierárquica, levando em consideração a sustentabilidade, desempenho econômico das diferentes composições e o efeito do ataque químico nas propriedades mecânicas e na durabilidade das argamassas. Ao final da análise, a composição mais indicada para ambientes agressivos contendo Na2SO4 foi a argamassa contendo 10% de sílica da casca de arroz em substituição parcial ao cimento Portland e, para a exposição ao MgSO4, a utilização de cinza volante na mesma proporção. expansivos sulfatos minerais metacaulim busca decisão 1 (1 32 3 2 3, a/agl=0,60 aagl060 aagl agl 0 60 NaSO Na SO (Na2SO4 MgSO4. MgSO4 MgSO . (MgSO4) prédefinida, prédefinida pré definida, definida pré-definida hierárquica sustentabilidade Na2SO 10 proporção ( a/agl=0,6 aagl06 6 (Na2SO (MgSO4 a/agl=0, aagl0 (MgSO a/agl=0 a/agl= a/agl

Abstract Given the environmental impacts associated with the production of conventional Portland cement, the study of special cements with reduced environmental impact has been a trend. In this context, cements containing ye'elimite (YCC) stand out due to their low CO 2 emissions. Despite the environmental advantages, the high demand for aluminum economically limits the production of these cements.An alternative to making its production feasible is using residual raw materials as a source of Al 2 O 3 , such as SFCC (spent fluidized catalytic cracking).In view of this, this work aims to evaluate hydration at the initial age of cements. For this, six clinkers were produced with different ye'elimite contents, with and without SFCC. These were characterized by XRD/Rietveld. The pastes were evaluated by TG/DTG and XRD/Rietveld to understand the hydration mechanism on the third day of these cements. It was possible to synthesize the main phases of YCC, in clinkers with and without SFCC. In addition, at the age evaluated, the pastes with and without SFCC presented comparable phase composition, indicating the potential for co-processing this residue. cement trend context yeelimite ye elimite YCC (YCC emissions advantages cementsAn An spent cracking.In crackingIn cracking .In contents XRDRietveld XRD Rietveld TGDTG TG DTG addition composition coprocessing co processing residue

Resumo Diante dos impactos ambientais associados à produção do cimento Portland convencional, o estudo de cimentos especiais de reduzido impacto ambiental tem sido uma tendência. Neste contexto, os cimentos contendo ye’elimita (YCC) se destacam devido à baixa emissão de CO2. Apesar das vantagens ambientais, a alta demanda por alumínio limita economicamente a produção destes cimentos. Uma alternativa para viabilizar a sua produção é o uso de matérias-primas residuais como fonte de Al2O3, a exemplo do SFCC (catalizador gasto do craqueamento catalítico de leito fluidizado). Diante disso, este trabalho tem como objetivo avaliar a hidratação na idade inicial de cimentos YCC produzidos a partir do coprocessamento do SFCC. Para isso, foram produzidos seis clínqueres com diferentes teores de ye’elimita, com e sem SFCC. Estes foram caracterizados por DRX/Rietveld. As pastas foram avaliadas por TG/DTG e DRX/Rietveld para compreender o mecanismo de hidratação em idade inicial destes cimentos. Foi possível sintetizar as principais fases dos YCC, nos clínqueres com e sem SFCC. Além disso, na idade avaliada, as pastas com e sem SFCC apresentaram composição de fases comparáveis indicando o potencial de coprocessamento do SFCC neste tipo de cimento. convencional tendência contexto yeelimita ye elimita (YCC CO2 CO matériasprimas matérias primas Al2O3 AlO Al O catalizador fluidizado. fluidizado . fluidizado) disso isso yeelimita, elimita, DRXRietveld DRX Rietveld TGDTG TG DTG avaliada Al2O

Abstract The objective of this study is to characterize the industrial solid waste generated by a geopolymeric composites precast industry in Goiás and use them in the production of mortar, in partial replacement of cement in the contents of 5%, 10%, 15% and 25%, due to its probable pozzolanic effect. For the research the residue underwent crushing in a hammer mill and sieving in a #40 mesh conducted in the industry itself. Then, physical-chemical analyzes were conducted to verify if the residue meets the parameters established by NBR 12653 (ABNT, 2014) Pozzolanic Materials - Requirements. The residue showed potential to be used as pozzolana, as in the particle size analysis only 19% was retained on sieve #325 and the moisture content also met the parameters of the aforementioned standard. However, the fire loss content and the alkali content available in ���� 2 �� were higher than the standard requirements, because the residue contains tire shavings and sodium hydroxide (NaOH) in its composition. In relation to the performance index with Portland cement at 28 days, the mortar with 5% residue in its composition met the standard conditions, but the performance with lime did not obtain the desired result, as the resistance decreased. After analysis, it has been realized that the residue does not qualify as pozzolan but can be used as a filler. 5 10 10% 15 25 25% effect 40 #4 itself Then physicalchemical physical chemical 1265 ABNT, ABNT (ABNT 2014 Requirements pozzolana 19 325 #32 However ��� � requirements NaOH (NaOH days conditions result decreased filler 1 4 # 126 201 32 #3 12 20 3

Resumo O objetivo deste estudo é caracterizar os resíduos sólidos industriais gerados por uma indústria goiana de pré-moldados de compósitos geopoliméricos e utilizá-los na produção de argamassa, em substituição parcial ao cimento nos teores de 5%, 10%, 15% e 25%, devido ao seu provável efeito pozolânico. Para a pesquisa o resíduo passou por trituração em moinho martelo e peneiramento em malha #40 realizados na própria indústria. Em seguida, foram realizadas análises físico-químicas para verificar se o resíduo atende aos parâmetros estabelecidos pela NBR 12653 (ABNT, 2014b) Materiais Pozolânicos - Requisitos. O resíduo apresentou potencial para ser utilizado como pozolana, pois na análise granulométrica apenas 19% ficaram retidos na peneira #325 e o teor de umidade também atendeu aos parâmetros da referida norma. No entanto o teor de perda ao fogo e o teor de álcalis disponíveis em Na 2 �� foram maiores do que os requisitos da norma, devido ao fato de o resíduo possuir em sua composição, raspas de pneu e hidróxido de sódio (NaOH). Em relação ao índice de desempenho com cimento Portland aos 28 dias, a argamassa que possui em sua composição 5% de resíduo atendeu as condições da norma, mas o desempenho com cal não obteve o resultado desejado, pois a resistência diminuiu. Após análise, percebeu-se que o resíduo não se enquadra como pozolana, mas pode ser usado como enchimento. prémoldados pré moldados utilizálos utilizá los 5 10 10% 15 25 25% pozolânico 40 #4 seguida físicoquímicas físico químicas 1265 ABNT, ABNT (ABNT 2014b b Requisitos pozolana 19 325 #32 norma � NaOH. NaOH . (NaOH) dias desejado diminuiu percebeuse percebeu enchimento 1 4 # 126 32 #3 (NaOH 12 3