Effect of Calcination Temperature on the Pozzolanic Activity of Brazilian Sugar Cane Bagasse Ash (SCBA)

Ribeiro, Daniel Véras; Morelli, M. R.

doi:10.1590/s1516-14392014005000093

Cited by 60 publications

(39 citation statements)

References 11 publications

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“…At 800°C, some sharp and intense peaks started (quartz and sillimanite) to show up, which implies that the crystallanity increases as temperature rises. Ribeiro and Morell [12] also reported similar observation on SCBA.…”

Section: Phase Analysis At Different Calcination Temperaturessupporting

confidence: 67%

Influence of Calcination on Different Properties of Sugarcane Bagasse and Waste Ash

et al. 2015

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Sugarcane bagasse is a fibrous waste product and important biomass sources, which is used as a fuel in the sugar industry. Bagasse ash is an industrial waste that mainly consists of high amount of silica and carbon materials. In this study sugarcane bagasse ash (SCBA) and sugarcane waste ash (SCWA) were calcined at 400°C, 600°C, 800°C and 1000°C for 2 h. These samples were characterized in order to evaluate the possibility of their use in different industries. XRF and XRD analyses were done for chemical and phase analysis of both calcined samples. The chemical composition of calcined SCBA and SCWA indicated that samples had similar compositions of other pozzolanic material. Carbon content has been determined by elemental analyzer. With increasing temperature the percentage of carbon content decreases in both cases. As temperature increases, the color of SCBA and SCWA samples changing from black to grey and white, which also indicates that the carbon content present in the SCBA were reasonably reduced. XRD patterns showed that crystallinity increases with influence of calcining temperature for both ash samples.

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Section: Phase Analysis At Different Calcination Temperaturessupporting

confidence: 67%

Influence of Calcination on Different Properties of Sugarcane Bagasse and Waste Ash

et al. 2015

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“…The chemical composition of bagasse ashes and Portland Cement used is presented in Table 1 and their and the crystallography in the diffractogram are shown in Figure 1 and Figure 2. These characteristic values with peaks at angles of 26.5º degrees SiO2 were described by Ribeiro (2014) …”

Section: Methodsmentioning

confidence: 98%

On the influence of sugarcane bagasse ashes as a partial replacement of cement in compressive strength of mortars

Berenguer

Silva

Torres

et al. 2018

Revista de la Asociación Latinoamericana de Control de Calidad,

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This paper presents an experimental program objectifying at investigating the potential of the use of sugarcane bagasse ash as a partial replacement of cement in the production of mortars. Sugarcane bagasse ashes from two origins were studied -one from sugarcane industry directly and other from pizzerias that uses this material replacing the wood in their ovens. The methodology followed the characterization of the material, where it was carried out through laboratory tests using X-ray diffraction (XRD) and X-ray fluorescence (WDXRF) and initial tests for the ideal quantification of cement substitution by residues. Results obtained indicated that both residues exhibited pozolanic features presenting about 60% of amorphous material in their composition and compressive strength tests at different ages showed satisfactory results. Concluding that residues played an important role in increasing short and long term compressive strengths. Keywords: sugarcane bagasse ashes; compressive strength of mortars; replacement of cement. Revista ALCONPAT, 8 (1), 2018: 30 -37 On the influence of sugarcane bagasse ashes as a partial replacement of cement in compressive strength of mortars R. A. Berenguer, F. A.Nogueira Silva, S. Marden Torres, E. C. Barreto Monteiro, P. Helene, A. A. de Melo Neto 31A influência das cinzas de bagaço de cana-de-açúcar como substituição parcial do cimento na resistência à compressão de argamassa ABSTRACT O artigo apresenta um programa experimental, objetivando investigar o potencial do uso das cinzas de bagaço de cana-de-açúcar como uma substituição parcial do cimento na produção de argamassas. As cinzas do bagaço de cana-de-açúcar de duas origens foram estudadas: uma oriunda diretamente da indústria de cana-de-açúcar e outra de pizzarias que utilizam este material em substituição a madeira em seus fornos. A metodologia seguiu com a caracterização do material, onde foi realizado através de testes de laboratório utilizando a difração de raios X (XRD) e a fluorescência de raios X (WDXRF) e testes iniciais para a quantificação ideal de substituição do cimento pelos resíduos. Os resultados obtidos indicaram que ambos os resíduos exibiram características pozolanas apresentando cerca de 60% de material amorfo na sua composição e testes de resistência compressiva em diferentes idades mostraram resultados satisfatórios. Concluindo que os resíduos desempenharam um papel importante no incremento das resistências à compressão a curto e de longo prazo. Palavras-chave: cinza de bagaço de cana-de-açúcar; compressão de argamassa; substituição de cimento.

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“…These materials improve the mechanical performance and durability of Portland cement pastes through microstructure control due to pozzolanic reactions that reduces permeability and chloride ion diffusion [21][22][23]. It is known that SCBA contains quartz but there are reports in the literature that this material exhibits pozzolanic activity [23][24][25][26][27]. Some works have been conducted to study the properties of C-S-H, Portland cement phases and pastes prepared with materials pozzolanic materials [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and hardness of cement pastes with mineral admixture

et al. 2017

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Portland cement pastes are highly heterogeneous material and exhibits heterogeneous features over a wide range of length scales. Mechanical properties of microstructure can be determined using depth-sensing indentation. Coupled indentation/SEM technique can be used to location the indents and provides a way to determine the mechanical properties of a specific phase. Thus, the present paper aims to determine the hardness of different phases of cement pastes prepared with different mineral admixtures including sugarcane bagasse ash. The microstructure of cement pastes prepared with different mineral admixtures is analyzed by X ray diffraction, scanning electron microscopy and dynamic hardness tests on polished sections. The different backscatter coefficient allows to differentiate anhydrous phases from C-S-H, calcium hydroxide, silica fume and quartz. A grid of indentation is used to determine the hardness of the different phases and a complete phase segmentation of the different samples is achieved. The results show that the hardness of the different phases follow the sequence (from higher to lower hardness) quartz, anhydrous particles, calcium hydroxide, C-S-H and agglomerated silica fume. The presence of agglomerated silica fume is clearly observed in scanning electron microscopy images and the poor mechanical properties of these areas might compromise the cement pastes. The microstructure of cement pastes prepared with sugarcane bagasse ashes is similar to the observed in samples with crushed quartz.

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Effect of Calcination Temperature on the Pozzolanic Activity of Brazilian Sugar Cane Bagasse Ash (SCBA)

Cited by 60 publications

References 11 publications

Influence of Calcination on Different Properties of Sugarcane Bagasse and Waste Ash

Influence of Calcination on Different Properties of Sugarcane Bagasse and Waste Ash

On the influence of sugarcane bagasse ashes as a partial replacement of cement in compressive strength of mortars

Microstructure and hardness of cement pastes with mineral admixture

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