Improved fire resistance by using slag cements

Éva Lublóy, Katalin Kopecskó, György L. Balázs, Imre Miklós Szilágyi, János Madarász

Research output: Article

5 Citations (Scopus)

Abstract

Concrete is a composite material that mainly consists of mineral aggregates bound by the matrix of hardened cement paste. Composition and microstructure of hardened cement paste have important influences on the properties of concrete exposed to high temperatures. An extensive experimental study was carried out to analyse the post-heating characteristics of concretes subjected to temperatures up to 800 °C. Major parameters of our study were the slag content of cement (0, 16, 25, 41 or 66 m%) and the value of maximum annealing temperature. Our results indicated that (1) the number and size of surface cracks as well as compressive strength decreased by the increasing slag content of cements due to elevated temperature; (2) the most intensive surface cracking was observed by using Portland cement without addition of slag. The increasing slag content of cement increased the relative post-heating compressive strength. Tendencies of surface cracking and reduction of compressive strength were in agreement, i.e. the more surface cracks, the more strength reduction.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalJournal of Thermal Analysis and Calorimetry
DOIs
Publication statusAccepted/In press - ápr. 6 2016

Fingerprint

Slag cement
flammability
Fire resistance
slags
cements
Cements
Slags
compressive strength
Compressive strength
Concretes
Ointments
surface cracks
Cracks
Heating
Temperature
Portland cement
heating
Minerals
temperature
Annealing

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics

Cite this

Improved fire resistance by using slag cements. / Lublóy, Éva; Kopecskó, Katalin; Balázs, György L.; Szilágyi, Imre Miklós; Madarász, János.

In: Journal of Thermal Analysis and Calorimetry, 06.04.2016, p. 1-9.

Research output: Article

Lublóy, Éva ; Kopecskó, Katalin ; Balázs, György L. ; Szilágyi, Imre Miklós ; Madarász, János. / Improved fire resistance by using slag cements. In: Journal of Thermal Analysis and Calorimetry. 2016 ; pp. 1-9.
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AU - Madarász, János

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