Determination of mechanical properties and thermal treatment behavior of alumina-based refractories

Katsavou, Ioanna D.; Krokida, Magdalini; Ziomas, I.

doi:10.1016/j.ceramint.2012.04.021

Cited by 15 publications

(9 citation statements)

References 15 publications

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“…This conversion reaction causes an increase in porosity and decrease in the compressive strength of CACC [19,22,23]. Many researchers have tried to identify this chemical reaction and the effect of this reaction on the performance of CACC [19,20,22,24].…”

Section: Introductionmentioning

confidence: 98%

High temperature material properties of calcium aluminate cement concrete

Khaliq

Khan

2015

Construction and Building Materials

153

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Section: Introductionmentioning

confidence: 98%

High temperature material properties of calcium aluminate cement concrete

Khaliq

Khan

2015

Construction and Building Materials

153

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“…Refractory materials can be divided into several classes based on: chemical composition (acid, basic and special), method of implementation (shaped and unshaped), method of manufacture (fused and sintered), and porosity content (porous and dense) [1,2]. Refractories act as a thermal barrier between a hot medium and the wall of the containing vessel, they insure a strong physical protection, preventing the erosion of walls and they act as thermal insulation, insuring heat retention [3].…”

Section: Introductionmentioning

confidence: 99%

“…One of the most well-known techniques for the production of refractories and ceramics is the mixing of several components in the form of powder, formation of the mixture to the final shape and firing to the suitable temperature, where desired properties are attained [3]. For the formation of refractories can be used different bonding systems, such as ceramic bond, hydraulic bond and organic bond.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Assessment of the Effect of Plasticizing and Air-Entraining Additives on Mechanical Properties of Refractory Cement Composite

Jogl¹,

Reiterman²

2018

Proceedings of the 4th Brazilian Conference on Composite Materials

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This article is focusing on comparison of plasticizing and air-entraining additives and their effect on mechanical properties of composite based on aluminous cement. Achieved results supposed to help during the development of lightweight composite able to withstand temperatures over 1000 °C and reduce heat transfer from a high temperature source, either by direct contact (conduction/convection) or via radiation. Operation at high temperature is of fundamental importance to many major sectors of industry, including material production and processing, chemical engineering, power generation and more. Objective is to achieve competitive performance with competitive life cycle costs. Maximum material efficiency and minimum manufacturing and operating costs are key factors in meeting this objective. Selection of a materials with sufficient economic conditions for a particular application must take account of many factors. For the purpose of this experiment, specimens were created from cement paste and different dosage of chopped carbon fibres. Experimental investigation underwent two series of samples different in the type of used additives. First series contains plasticizing additive, second series contains air-entraining additive. The purpose was to determine the different effect on the workability of fresh mixture, bulk density and mechanical properties. The strength of samples was measured after exposure to high temperatures of 600 °C and 1000 °C. The residual properties were compared between each other and also to samples dried at the temperature of 105 °C. Obtained results revealed the level of influence of mentioned additives on the composition of studied refractory composite.

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“…The major categories of traditional refractories are fireclays, high alumina, and silica. One of the best-known techniques for producing refractory composites is by mixing selected components and then casting them to obtain the required shape [3]. The choice of material for traditional refractory applications, and also for advanced material applications, has always been based on balancing costs and performance lifetime [1].…”

Section: Introductionmentioning

confidence: 99%

Residual Properties of Fiber-Reinforced Refractory Composites With a Fireclay Filler

et al. 2016

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Abstract. The aim of our study was to develop a composite material for industrial use that is resistant to the effect of high temperatures. The binder system based on aluminous cement was modified by adding finely-ground ceramic powder and metakaolin to reduce costs and also to reduce adverse effects on the environment due to high energy consumption for cement production. Additives were applied as a partial aluminous cement replacement in doses of 10, 20 and 30 % by weight. The composites were evaluated on the basis of their mechanical properties and their bulk density after gradual temperature loading. The influence of basalt fibers and modifications to the binder system were studied at the same time. Basalt fibers were applied in doses of 0.5 % and 2.0 % by volume. The results confirmed the potential of the mineral additives studied here for practical applications, taking into account the residual mechanical parameters after thermal loading. The addition of ceramic powder reduced the bulk density by 5 % for each 10 % of cement substitution, but the residual values were very similar. The bulk density and the compressive strength were reduced when basalt fibers were applied, and the flexural strength was significantly increased in proportion to the fiber dosages. Metakaolin seems to be a more suitable additive than the ceramic powder that was applied here, because there was a significant increase in the mechanical parameters and also in the residual values of all properties that were studied.

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Determination of mechanical properties and thermal treatment behavior of alumina-based refractories

Cited by 15 publications

References 15 publications

High temperature material properties of calcium aluminate cement concrete

High temperature material properties of calcium aluminate cement concrete

Experimental Assessment of the Effect of Plasticizing and Air-Entraining Additives on Mechanical Properties of Refractory Cement Composite

Residual Properties of Fiber-Reinforced Refractory Composites With a Fireclay Filler

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