Physical and Mechanical Properties of Composites Made with Aluminous Cement and Basalt Fibers Developed for High Temperature Application

Reiterman, Pavel; Holčapek, Ondřej; Jogl, Marcel; Konvalinka, Petr

doi:10.1155/2015/703029

Cited by 19 publications

(13 citation statements)

References 36 publications

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“…It must be noted that FGCP had already gone through exposure to elevated temperature during brick production, which could be successfully exploited in the composition formulation of refractory castables. is approach was con rmed in previous research [16,34]. In addition, Table 1 shows the chemical composition of the studied FGCP, when the total amount of Al 2 O 3 is 13.98% and SiO 2 is 64.45%.…”

Section: Fine Ceramic Powdersupporting

confidence: 70%

“…Also the drying process could cause cracks; therefore, the fibers limit the crack propagation [15]. e previous research confirmed that optimal dosage of basalt fibers, in terms of residual mechanical and fracture properties, in fine-grained cement-based composite lies between 1.0 and 2.0% by volume [16] or 4% of ceramic fibers, respectively [17].…”

Section: Introductionmentioning

confidence: 99%

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Development of Composite for Thermal Barriers Reinforced by Ceramic Fibers

Holčapek

Koťátková

Reiterman

2018

Advances in Civil Engineering

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e paper introduces the development process of fiber-reinforced composite with increased resistance to elevated temperatures, which could be additionally increased by the hydrothermal curing. However, production of these composites is extremely energy intensive, and that is why the process of the design reflects environmental aspects by incorporation of waste material-fine ceramic powder applied as cement replacement. Studied composite materials consisted of the basalt aggregate, ceramic fibers applied up to 8% by volume, calcium-aluminous cement (CAC), ceramic powder up to 25% by mass (by 5%) as cement replacement, plasticizer, and water. All studied mixtures were subjected to thermal loading on three thermal levels: 105°C, 600°C, and 1000°C. Experimental assessment was performed in terms of both initial and residual material properties; flow test of fresh mixtures, bulk density, compressive strength, flexural strength, fracture energy, and dynamic modulus of elasticity were investigated to find out an optimal dosage of ceramic fibers. Resulting set of composites containing 4% of ceramic fibers with various modifications by ceramic powder was cured under specific hydrothermal condition and again subjected to elevated temperatures. One of the most valuable benefits of additional hydrothermal curing of the composites lies in the higher residual mechanical properties, what allows successful utilization of cured composite as a thermal barrier in civil engineering. Mixtures containing ceramic powder as cement substitute exhibited after hydrothermal curing increase of residual flexural strength about 35%; on the other hand, pure mixture exhibited increase up to 10% even higher absolute values.

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Section: Fine Ceramic Powdersupporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Development of Composite for Thermal Barriers Reinforced by Ceramic Fibers

Holčapek

Koťátková

Reiterman

2018

Advances in Civil Engineering

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“…In Table 2, the bulk density, flexural strength, compressive strength and fracture energy of used mixtures are shown (after exposure to 105°C, 600°C and 1000°C). All mentioned properties were measured on specimens with dimensions of 40 × 40 × 160 mm and are taken from [24].…”

Section: Composition Of Used Mixturesmentioning

confidence: 99%

“…In previous research [11,23,24], the influence of elevated temperatures on various properties of refractory composites has been investigated after exposure to one loading cycle. In accordance with the goal of this research, the temperature loading scheme was modified.…”

Section: Cycling Temperature Loadingmentioning

confidence: 99%

Cyclic Temperature Loading Residual Flexural Strenght of Refractory Slabs

2017

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Abstract. This paper describes the effect of cyclic elevated temperature loading on refractory slabs made from high performance, fibre reinforced cement composite. Slabs were produced from aluminous cement-based composites, reinforced by different dosages of basalt fibres. The composite investigated in this study had self-compacting characteristics. The slabs used were exposed to different thermal loading -600°C, 1000°C, six times applied 600°C and 1000°C. Then, flexural strength was investigated in all groups of slabs, including group reference slabs with no thermal loading. The results show that the appropriate combination of aluminous cement, natural basalt aggregate, fine filler and basalt fibres in dosage 1.00 % of volume is able to successfully resist to cyclic temperature loading. Tensile strength in bending of these slabs (after cyclic temperature loading at 600°C) achieved 6.0 MPa. It was demonstrated that it is possible to use this composite for high extensive conditions in real industrial conditions.

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“…For the purpose of the ultra-high performance fibre reinforced concrete (UHPFRC), the high strength steel fibres are commonly used, where the optimal dosage oscillates from 1.5 % to 2.0 % of volume [12,13]. The optimal dosage of fibres in the field of refractory composite has also been investigated, where the amount from 1.0 % to 2.0 % of basalt fibres can be classified as suitable for an elevated environment [14]. The optimal dosage of ceramic fibres can be found in a level about 4.0 % [15].…”

Section: No /mentioning

confidence: 99%

Applicability of Carbon Fibres in Refractory Cement Composites

2018

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The main objective of this article is to present the influence of high temperatures on mechanical properties of advanced refractory cement composite reinforced with carbon fibres. The presented material is suitable for industrial applications and can withstand elevated temperatures up to 1000 °C. The action of high temperatures was investigated on two temperature levels 600 °C and 1000 °C and was compared to reference specimens dried at 105 °C. The carbon fibres with flexural strength of 4100MPa were applied in dosage 0.50 %, 0.75% and 1.00% of the total volume. The second investigated modification was mutual ratio between aluminous cement and fine ceramic powder. The influence of high temperatures was investigated by measuring the bulk density, compressive and flexural strength, dynamic modulus of elasticity and fracture energy; all measured on prismatic specimens 40 × 40 × 160 mm. The workability of fresh mixture was limited by the maximum dosage of carbon fibres in 1% of the total volume. Based on the workability and evaluation of residual mechanical properties after temperature loading, the best was found to be the combination of carbon fibres in dosage of 0.75% by volume.

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Physical and Mechanical Properties of Composites Made with Aluminous Cement and Basalt Fibers Developed for High Temperature Application

Cited by 19 publications

References 36 publications

Development of Composite for Thermal Barriers Reinforced by Ceramic Fibers

Development of Composite for Thermal Barriers Reinforced by Ceramic Fibers

Cyclic Temperature Loading Residual Flexural Strenght of Refractory Slabs

Applicability of Carbon Fibres in Refractory Cement Composites

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