A comparative study of hydration kinetics of different cements by thermogravimetry on calcined mass basis

Dweck, Jo; Melchert, Maura Berger Maltez; Cartledge, Frank K.; Leonardo, R. S.; Filho, Romildo Dias Toledo

doi:10.1007/s10973-016-6080-8

Cited by 20 publications

(6 citation statements)

References 14 publications

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“…Portland cement is the hydraulic binding material consisting mainly of Portland cement clinker anda limited amount of gypsum [1]. Clinker phases are tricalcium silicate (abbreviation C 3 S-3CaO·SiO 2 or Ca 3 SiO 5 , alite), dicalcium silicate (abbreviation C 2 S-2CaO·SiO 2 or Ca 2 SiO 4 , belite), tricalcium aluminate (abbreviation C 3 A-3CaO·Al 2 O 3 or Ca 3 Al 2 O 6 , celite) and calcium aluminoferrite (abbreviation C 4 AF-4CaO·Al 2 O 3 ·Fe 2 O 3 or Ca 4 Al 2 Fe 2 O 10 , brownmillerite) [2,3,4]. Sulfate ions from gypsum (CaSO 4 ·2H 2 O) influence the reaction of C 3 A and Ca(OH) 2 (CH, portlandite), to form ettringite(C 6 AtrueS¯ 3 H 32 ).…”

Section: Introductionmentioning

confidence: 99%

Application of Isothermal and Isoperibolic Calorimetry to Assess the Effect of Zinc on Hydration of Cement Blended with Slag

et al. 2019

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This work deals with the influence of zinc on cement hydration. The amount of zinc in cement has increased over recent years. This is mainly due to the utilization of solid waste and tires, which are widely used as a fuel in a rotary kiln. Zinc can also be introduced to cement through such secondary raw materials as slag, due to increased recycling of galvanized materials. The aim of this work was to determine the effect of zinc on the hydration of Portland cement, blended with ground blast furnace slag (GBFS). This effect was studied by isothermal and isoperibolic calorimetry. Both calorimetry methods are suitable for measurements during the first days of hydration. Isoperibolic calorimetry monitors the hydration process in real-life conditions, while isothermal calorimetry does so at a defined chosen temperature. Zinc was added to the cement in the form of two soluble salts, namely Zn(NO3)2, ZnCl2, and a poorly soluble compound, ZnO. The concentration of added zinc was chosen to be 0.05, 0.1, 0.5, and 1mass percent. The amount of GBFS replacement was 15% of cement dosage. The newly formed hydration products were identified by X-ray diffraction method (XRD).

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Section: Introductionmentioning

confidence: 99%

Application of Isothermal and Isoperibolic Calorimetry to Assess the Effect of Zinc on Hydration of Cement Blended with Slag

et al. 2019

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“…The presence of the aforementioned substances confirms that the products appearing in the cracks are products of the delayed hydration and carbonation reactions, which are the cause of the healing phenomenon during the wet and dry stages. [27] [28]…”

Section: Hydration Products Formed On the Matrixmentioning

confidence: 99%

Self-healing of slag-cement ultra-high performance steel fiber reinforced concrete (UHPFRC) containing sisal fibers as healing conveyor

Moreira

Krelani

Ferreira

et al. 2022

Journal of Building Engineering

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“…The main phases formed during the production of cement are tricalcium silicate (C3S -3CaO•SiO2 or Ca3SiO5, alite), dicalcium silicate (C2S -2CaO•SiO2 or Ca2SiO4, belite), tricalcium aluminate (C3A -3CaO•Al2O3 or Ca3Al2O6, celite) and calcium aluminoferrite (C4AF -4CaO•Al2O3•Fe2O3 or Ca4Al2Fe2O10, brownmillerite) [1][2][3]. Gypsum (CaSO4•2H2O) is added to clinker as a setting agent, which reacts with C3A and Ca(OH)2 (CH, portlandite) to form ettringite (C6A S 3H32) [4].…”

Section: Introductionmentioning

confidence: 99%

Possibilities of Use of Isothermal and Isoperibolic Calorimetry to Study the Effect of Zinc on Hydration of Cement Blended with Fly Ash

Šiler¹,

Kolářová²,

Novotný³

et al. 2020

Preprint

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Increasing utilization of secondary raw materials and alternative fuels results in increasing contents of metals in cements. One of elements, the content of which keeps rising in cement is zinc. It comes to cement with secondary raw materials such as slag or fly ash or by the utilization of used tires as an alternative fuel. Zinc ions significantly prolong the hydration process in cement. This work deals with the influence of zinc ions in the form of very poorly soluble ZnO salt and easily soluble ZnCl2 and Zn(NO)3 on the hydration of cement blended with fly ash. Zinc was dosed in the range of 0.05, 0.1, 0.5 a 1% of cement weight. Final products were next analyzed using X-Ray Diffraction.

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A comparative study of hydration kinetics of different cements by thermogravimetry on calcined mass basis

Cited by 20 publications

References 14 publications

Application of Isothermal and Isoperibolic Calorimetry to Assess the Effect of Zinc on Hydration of Cement Blended with Slag

Application of Isothermal and Isoperibolic Calorimetry to Assess the Effect of Zinc on Hydration of Cement Blended with Slag

Self-healing of slag-cement ultra-high performance steel fiber reinforced concrete (UHPFRC) containing sisal fibers as healing conveyor

Possibilities of Use of Isothermal and Isoperibolic Calorimetry to Study the Effect of Zinc on Hydration of Cement Blended with Fly Ash

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