The influence of mineralogical, chemical and physical properties on grindability of commercial clinkers with high MgO level

Souza, Vládia Cristina Gonçalves de; Koppe, Jair Carlos; Costa, João Felipe Coimbra Leite; Vargas, André Luís Marin; Blando, Eduardo; Hübler, Roberto

doi:10.1016/j.cemconres.2008.02.011

Cited by 19 publications

(8 citation statements)

References 7 publications

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“…For instance, Jennings et al presented results from three experimental techniques that are particularly suited to analyzing disordered nanoporous materials: small‐angle neutron scattering, weight and length changes during equilibrium drying, and nanoindentation 7 . Souza et al investigated the hardness and elastic modulus of commercial clinkers with high MgO by nanoindentation tests 8 . Constantinides and Ulm proposed and validated a new technique and experimental protocol to rationally assess the nanomechanical behavior of C–S–H based on a statistical analysis of hundreds of nanoindentation tests 9 .…”

Section: Introductionmentioning

confidence: 99%

“…7 Souza et al investigated the hardness and elastic modulus of commercial clinkers with high MgO by nanoindentation tests. 8 Constantinides and Ulm proposed and validated a new technique and experimental protocol to rationally assess the nanomechanical behavior of C-S-H based on a statistical analysis of hundreds of nanoindentation tests. 9 Mondal et al employed the nanoindentation method to determine the mechanical properties of hardened cement paste and not hardened cement paste at the early age.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on Modulus and Hardness of Ettringite

Yang

Guo

2011

Experimental Techniques

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The experimental study on the modulus and hardness (in‐press rigidity) of ettringite is carried out in this work. Firstly, the ettringite is obtained by chemical synthesis method. Secondly, samples are formed by filling the ettringite into resin matrix. Thirdly, the indentation modulus and hardness of ettringite are measured with different indentation depths by virtue of the instrument of MTS Nanoindenter XP. Finally, analysis on the modulus and hardness of the ettringite is performed according to the sample unloading curves. The results given by this work indicate that the magnitude of the modulus is 20.07 GPa and the hardness is 0.613 GPa.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Study on Modulus and Hardness of Ettringite

Yang

Guo

2011

Experimental Techniques

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“…The greater specific surface represents better grindability and leads to the greater water demand. The differences in mineralogical composition of clinkers significantly impact the grindability of clinkers; C 2 S is known to be the most prominent strength giving components in all clinker minerals [12]. The grindability of RM-2 clinker increases as the amount of C 2 S decreases.…”

Section: Xrd Pattern Of Clinkermentioning

confidence: 99%

Utilization of Iron Ore Tailings as Raw Material for Portland Cement Clinker Production

Luo

Zhang

Bao

et al. 2016

Advances in Materials Science and Engineering

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The cement industry has for some time been seeking alternative raw material for the Portland cement clinker production. The aim of this research was to investigate the possibility of utilizing iron ore tailings (IOT) to replace clay as alumina-silicate raw material for the production of Portland cement clinker. For this purpose, two kinds of clinkers were prepared: one was prepared by IOT; the other was prepared by clay as a reference. The reactivity and burnability of raw meal, mineralogical composition and physical properties of clinker, and hydration characteristic of cement were studied by burnability analysis, differential thermal analysis, Xray diffraction, and hydration analysis. The results showed that the raw meal containing IOT had higher reactivity and burnability than the raw meal containing clay, and the use of IOT did not affect the formation of characteristic mineralogical phases of Portland cement clinker. Furthermore, the physical and mechanical performance of two cement clinkers were similar. In addition, the use of IOT was found to improve the grindability of clinker and lower the hydration heat of Portland cement. These findings suggest that IOT can replace the clay as alumina-silicate raw material for the preparation of Portland cement clinker.

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“…Os ensaios de microdureza de clínqueres foram realizados em seções polidas preparadas segundo os procedimentos descritos em Souza (2007Souza ( , 2008aSouza ( , 2008b) para análises de microscopia óptica. Foi utilizado um indentador Vickers (pirâmide de base quadrada), tendo sido seguidos procedimentos recomendados pela literatura para determinação de microdureza de minerais (Vaughan & Craig (1978), Grabco (2002) Para primeiras estimativas de dureza, adotou-se o número mínimo de 3 seções polidas de cada uma das três frações de tamanho mais representativas do clínquer (com relação à distribuição de tamanhos da alimentação do moinho de clínquer).…”

Section: Materiais E Métodosunclassified

Efeito dos elementos estranhos (foreign íons) sobre a Microdureza Vickers das fases cristalinas em clínqueres co-processados

Souza

Koppe

Costa

2010

Rem: Rev. Esc. Minas

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ResumoEsse trabalho determina o valor médio de microdureza Vickers dos componentes cristalinos do clínquer e estima o efeito dos elementos estranhos (menores) e da composição mineralógica sobre os resultados de microdureza. Para isto, foi coletado um número signifi cativo de amostras sobre a correia de alimentação de moinhos de clínqueres em onze fornos co-processadores no Brasil. Os resultados mostram que a microdureza varia de acordo com o tipo de impurezas e sua distribuição. Também, o conteúdo mineralógico e a razão alumina/ferro desempenham um papel importante. Palavras

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The influence of mineralogical, chemical and physical properties on grindability of commercial clinkers with high MgO level

Cited by 19 publications

References 7 publications

Experimental Study on Modulus and Hardness of Ettringite

Experimental Study on Modulus and Hardness of Ettringite

Utilization of Iron Ore Tailings as Raw Material for Portland Cement Clinker Production

Efeito dos elementos estranhos (foreign íons) sobre a Microdureza Vickers das fases cristalinas em clínqueres co-processados

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