Detail publikace

Effect of Na3PO4 on the Hydration Process of Alkali-Activated Blast Furnace Slag

Originální název

Effect of Na3PO4 on the Hydration Process of Alkali-Activated Blast Furnace Slag

Anglický název

Effect of Na3PO4 on the Hydration Process of Alkali-Activated Blast Furnace Slag

Jazyk

en

Originální abstrakt

In recent years, the utilization of different non-traditional cements and composites has been increasing. Alkali-activated cementitious materials, especially those based on the alkali activation of blast furnace slag, have considerable potential for utilization in the building industry. However, alkali-slag cements exhibit very rapid setting times, which are too short in some circumstances, and these materials cannot be used for some applications. Therefore, it is necessary to find a suitable retarding admixture. It was shown that the sodium phosphate additive has a strong effect on the heat evolution during alkali activation and effectively retards the hydration reaction of alkali-activated blast furnace slag. The aim of the work is the suggestion of a reaction mechanism of retardation mainly based on Raman and X‑ray photoelectron spectroscopy.

Anglický abstrakt

In recent years, the utilization of different non-traditional cements and composites has been increasing. Alkali-activated cementitious materials, especially those based on the alkali activation of blast furnace slag, have considerable potential for utilization in the building industry. However, alkali-slag cements exhibit very rapid setting times, which are too short in some circumstances, and these materials cannot be used for some applications. Therefore, it is necessary to find a suitable retarding admixture. It was shown that the sodium phosphate additive has a strong effect on the heat evolution during alkali activation and effectively retards the hydration reaction of alkali-activated blast furnace slag. The aim of the work is the suggestion of a reaction mechanism of retardation mainly based on Raman and X‑ray photoelectron spectroscopy.

Plný text v Digitální knihovně

BibTex


@article{BUT125230,
  author="Lukáš {Kalina} and Vlastimil {Bílek} and Radoslav {Novotný} and Miroslava {Mončeková} and Jiří {Másilko} and Jan {Koplík}",
  title="Effect of Na3PO4 on the Hydration Process of Alkali-Activated Blast Furnace Slag",
  annote="In recent years, the utilization of different non-traditional cements and composites has been increasing. Alkali-activated cementitious materials, especially those based on the alkali activation of blast furnace slag, have considerable potential for utilization in the building industry. However, alkali-slag cements exhibit very rapid setting times, which are too short in some circumstances, and these materials cannot be used for some applications. Therefore, it is necessary to find a suitable retarding admixture. It was shown that the sodium phosphate additive has a strong effect on the heat evolution during alkali activation and effectively retards the hydration reaction of alkali-activated blast furnace slag. The aim of the work is the suggestion of a reaction mechanism of retardation mainly based on Raman and X‑ray photoelectron spectroscopy.",
  address="MDPI",
  chapter="125230",
  doi="10.3390/ma9050395",
  howpublished="online",
  institution="MDPI",
  number="5",
  volume="9",
  year="2016",
  month="may",
  pages="395--410",
  publisher="MDPI",
  type="journal article in Web of Science"
}