Cement Composites for High Temperature Applications

Koňáková, Dana; Vejmelková, Eva; Špedlová, Veronika; Polozhiy, Kirill; Černý, Robert

doi:10.4028/www.scientific.net/amr.982.154

Cited by 7 publications

(5 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compressive strength was determined on the halves of the specimens left over after the bending tests. [5] The load area was 40 x 40 mm and the deformation was also controlled. The device for compressive strength EU 40 was used.…”

Section: Experimental Methods and Resultsmentioning

confidence: 99%

Behavior of Cement Composites Loaded by High Temperature

Špedlová

Koňáková

2015

MSF

Self Cite

View full text Add to dashboard Cite

In this paper, there are summarized the results of an experimental program focused on basic, mechanical and thermal properties of cement composites according to the high – temperature loading. Four different materials were studied, which differed in used kind of cement and amount of fibers. As a matrix for studied composites the aluminous cement was chosen because of its resistance in high temperature. For a comparison the Portland cement was also tested. The second main ingredient used to provide better resistance in high temperatures - the basalt aggregate, was mixed in every specimen. The basalt fibers were chosen for two of the measured samples, remaining two ones were tested without fibers. The obtained data in this presented analyses show that the application of the aluminous cement leads to increase (depending on temperature) of porosity, which is the cause of decreasing of the coefficient of thermal conductivity. It can seems, that these cement composites will have low mechanical strength in high temperatures, but because of better sintering, the aluminous cement keeps its strength in high temperatures better than Portland cement.

show abstract

Section: Experimental Methods and Resultsmentioning

confidence: 99%

Behavior of Cement Composites Loaded by High Temperature

Špedlová

Koňáková

2015

MSF

Self Cite

View full text Add to dashboard Cite

show abstract

“…Compressive strength was determined on the remaining fragments of the specimens left over after the bending tests. Measurements were performed employing loading device EU 40 [14,15]. In Table 3 are stated the values of flexural and compressive strength from all mixtures.…”

Section: Experimental Measurement and Resultsmentioning

confidence: 99%

Proposal of Fire Resistant Composites with Application of Lightweight Aggregate Liaver

Jogl

Reiterman

Holčapek

et al. 2014

AMR

View full text Add to dashboard Cite

This paper describes the application of lightweight aggregate (LWA) in the creation of fire resistant composite. The effort of the project is the preparation of a light refractory material with good mechanical properties, which would reach technically economical solutions. We initially chose as lightweight aggregate Liaver, which in combination with chamotte aggregate represent the filler of composite. The following observations were focused on partial replacement of binding components with brick dust and its influence on the mechanical properties of the composite. After design process, test composite specimens were produced to determine hardened properties at standard age. On the 28 day were all the mixtures exposed to 105, 600 and 1000 °C. Lastly, the flexural and compressive strength tests were performed on the composite specimens to identify high temperature effect comparing to strength test results obtained from standard laboratory conditions.

show abstract

“…Mechanical properties of composite composed of basalt aggregates as well as basalt fibres in three temperature treatments (none, 600 °C and 1000 °C thermal loadings) were investigated by Holčapek et al [7]. Our previous study [8] was also focused on utilization of both the basalt aggregate as well as the basalt fibres, but in that article the matter of the study was the scope of properties (basic physical, mechanical, hygric and thermal characteristics) without thermal treatment. Regarding thermal expansion we already proved positive effect of basalt [9], but there were used just one length of basalt fibres.…”

Section: Introductionmentioning

confidence: 99%

Thermal Expansion of Aluminate Cement-Based Composite Containing Basalt Fibres with Different Length

Koňáková

Vejmelková

2016

KEM

View full text Add to dashboard Cite

This article is focused on thermal expansion of cement-based composite. Studied materials are concrete containing alumina cement, silica aggregates and they are reinforced by basalt fibres. Three different concrete varying in fibres length were prepared and its basic physical properties and thermal expansion were measured. Fibres lengths were 6mm and 12mm. Total amount of fibres in mixtures were constant, whereas the ratio of the fibers were changed. Results were compared with reference concrete with no fibres. It was proved positive effect of fibres on thermal expansion, when the lowest values of thermal strain were shown by material with just longer fibres.

show abstract

Cement Composites for High Temperature Applications

Cited by 7 publications

References 12 publications

Behavior of Cement Composites Loaded by High Temperature

Behavior of Cement Composites Loaded by High Temperature

Proposal of Fire Resistant Composites with Application of Lightweight Aggregate Liaver

Thermal Expansion of Aluminate Cement-Based Composite Containing Basalt Fibres with Different Length

Contact Info

Product

Resources

About