Using isothermal calorimetry, X-ray diffraction, thermogravimetry and FTIR to monitor the hydration reaction of Portland cements associated with red mud as a supplementary material

Romano, Roberto; Bernardo, Heitor Montefusco; Maciel, Marcel Hark; Pileggi, Rafael Giuliano; Cincotto, Maria Alba

doi:10.1007/s10973-019-08095-x

Cited by 25 publications

(12 citation statements)

References 29 publications

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“…As it is commonly known, the calorimetric studies are of special importance in the determination of hydraulic activity of binders. Many crucial problems were resolved due to this method, not only in the case of Portland and blended cements but also in the case of CACs; some of them appeared quite recently [20][21][22][23].…”

Section: Resultsmentioning

confidence: 99%

Calorimetry in the studies of by-pass cement kiln dust as an additive to the calcium aluminate cement

Nocuń-Wczelik

Stolarska

2019

J Therm Anal Calorim

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The studies focused on the kinetics of early hydration in the high-calcium aluminate cement (CAC 70)-bypass cement kiln dusts (BPCKD)-mixtures. For this purpose, the mixtures of cement with this additive or with some potential constituents of dusts were produced. The microcalorimeter was applied to follow the kinetics of hydration. The investigations with the aim of finding the relationship between the components of initial mixtures and the modification of hydration process were carried out. The rheological properties were characterized, and the chemical shrinkage characteristics were produced. The phase assemblage characterization and microscopic observations were done as well. In case of the high-calcium aluminatebased binders, the modification of setting process was observed; the rheological properties and chemical shrinkage were affected too. The acceleration of heat evolution-the shortening of so-called induction period in the presence of BPCKD additive-was observed. The results were compared to those obtained for the CAC with ordinary Portland cement additive. The results of calorimetric measurements are discussed in terms of the chemical and phase assemblage of this additive as compared to the Portland cement clinker precursors and potassium chloride-the solid and liquid components of the dust.

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Section: Resultsmentioning

confidence: 99%

Calorimetry in the studies of by-pass cement kiln dust as an additive to the calcium aluminate cement

Nocuń-Wczelik

Stolarska

2019

J Therm Anal Calorim

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“…As reported by many researchers, replacing cement (clinker + calcium sulfate) by SCMs as slags [106,107], fly ash [99,[108][109][110][111] (especially high calcium fly ashes [108,111]), silica fume [112], calcined clay [9,[113][114][115][116], limestone [9,117], red mud [118,119], zeolite [120], and ground waste expanded perlite (highly reactive pozzolan) [112], usually anticipate sulfate depletion, thus increasing the sulfate demand per clinker. Because of the high amounts of calcined clay and limestone, LC 3 cements usually require more gypsum in comparison with plain Portland cement [9,[121][122][123][124][125][126].…”

Section: Supplementary Cementitious Materials (Scms)mentioning

confidence: 99%

“…The aluminum content of the SCMs may also influence sulfate demand [79,107,109,113,115,118,119,124]. Using SCMs with higher aluminum contents, increases the amount of ettringite formed, which increases the sulfate consumption and anticipating sulfate depletion.…”

Section: Supplementary Cementitious Materials (Scms)mentioning

confidence: 99%

Effects of sulfates on the hydration of Portland cement – A review

Neto

Torre

Kirchheim

2021

Construction and Building Materials

113

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“…X-ray fluorescence (FRX), in PANalytical equipment, model Minipal Cement, and X-ray diffraction (XRD) in a PANalytical X'PERT-MPD, were used to determine the chemical and mineralogical composition of each raw material, respectively, following the procedures reported by Romano et al [12], and the thermal decomposition was quantified using a Netzsch thermobalance, model STA409EP [24].…”

Section: Characterizationmentioning

confidence: 99%

“…Romano et al [11], [12] applied different methods for monitoring the chemical reaction of Portland cement in association with using bauxite residue, detecting, beyond the ordinary hydrated products of pure Portland cement, the formation of sodium silicoaluminate hydrate (NASH), and calcium aluminate. Fujii et al [13] evaluated the impact of using superplasticizers in the consolidation of Portland cement suspensions blended with bauxite residue, concluding that the stage of hardening was considerably affected by the kind and content of admixture.…”

Section: Introductionmentioning

confidence: 99%

Combined evaluation of oscillatory rheometry and isothermal calorimetry for the monitoring of hardening stage of Portland cement compositions blended with bauxite residue from Bayer process generated in different sites in Brazil

Romano

Mesquita

Bernardo

et al. 2021

Rev. IBRACON Estrut. Mater.

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Bauxite residue (BR), a by-product of alumina and aluminum production, consists of high aluminum, silica, and iron content, and sodium from the bauxite ore digestion during the Bayer process. This waste is still being disposal into the lakes of mud, causing some environmental problems. So, the search for its application has gained interest. Studies reported in literature point out that one of the most promising applications is in association with Portland cement, which can also help to reduce the environmental impact caused by the CO2-emissions in its production. In this work, a combined evaluation of oscillatory rheometry and isothermal calorimetry was performed for the monitoring of the hardening stage of Portland cement (PC) compositions blended with BR generated in different sites in Brazil. The time-sweep test was applied to obtain the consistency gain of suspensions over-time, allowing us to understand the physical parameters of consolidation, while the changes in the hydration reaction showed considerable differences in the chemical contribution. As a conclusion, it was clear the impact of each BR, mainly due to the aspects related to soluble aluminates, silicates, and sodium, which in association with the soluble ions from PC, affected the chemical reaction and agglomeration/flocculation forces of particles.

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Using isothermal calorimetry, X-ray diffraction, thermogravimetry and FTIR to monitor the hydration reaction of Portland cements associated with red mud as a supplementary material

Cited by 25 publications

References 29 publications

Calorimetry in the studies of by-pass cement kiln dust as an additive to the calcium aluminate cement

Calorimetry in the studies of by-pass cement kiln dust as an additive to the calcium aluminate cement

Effects of sulfates on the hydration of Portland cement – A review

Combined evaluation of oscillatory rheometry and isothermal calorimetry for the monitoring of hardening stage of Portland cement compositions blended with bauxite residue from Bayer process generated in different sites in Brazil

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