Detail publikace

HYBRID ALKALI-ACTIVATED PORTLAND CEMENTS

KALINA, L. BÍLEK, V. BRADOVÁ, L. NOVOTNÝ, R. OPRAVIL, T. ŠOUKAL, F.

Originální název

HYBRID ALKALI-ACTIVATED PORTLAND CEMENTS

Anglický název

HYBRID ALKALI-ACTIVATED PORTLAND CEMENTS

Jazyk

en

Originální abstrakt

The most promising way to improve the sustainability of cement is to produce blended Portland cements with supplementary cementitious materials. Blast furnace slag (BFS) is one of significant pozzolan sources used worldwide in blended cements which contributes to lowering the environmental impact of cement industry. On the other hand, the replacement of Portland clinker is connected with undesirable effects such as the reduction of early strength development. In order to overcome this disadvantage, the study deals with the development of hybrid cements in which the utilization of solid waste alkaline activator quickly awakens the pozzolanic properties of BFS. New types of blended alkali activated cements were designed to meet the European standard EN 197-1 and classified to the Blastfurnace CEM III cements in accordance with the mechanical, physical and chemical requirements. The alkali activation caused an increase of early compressive strength in comparison with reference cement and at the same time the initial setting time was delayed which is also interesting from the point of view of concrete production. Moreover, this non-traditional hybrid alkali-activated Blastfurnace cement provides considerable ecological and economical potential.

Anglický abstrakt

The most promising way to improve the sustainability of cement is to produce blended Portland cements with supplementary cementitious materials. Blast furnace slag (BFS) is one of significant pozzolan sources used worldwide in blended cements which contributes to lowering the environmental impact of cement industry. On the other hand, the replacement of Portland clinker is connected with undesirable effects such as the reduction of early strength development. In order to overcome this disadvantage, the study deals with the development of hybrid cements in which the utilization of solid waste alkaline activator quickly awakens the pozzolanic properties of BFS. New types of blended alkali activated cements were designed to meet the European standard EN 197-1 and classified to the Blastfurnace CEM III cements in accordance with the mechanical, physical and chemical requirements. The alkali activation caused an increase of early compressive strength in comparison with reference cement and at the same time the initial setting time was delayed which is also interesting from the point of view of concrete production. Moreover, this non-traditional hybrid alkali-activated Blastfurnace cement provides considerable ecological and economical potential.

Dokumenty

BibTex


@inproceedings{BUT150964,
  author="Lukáš {Kalina} and Vlastimil {Bílek} and Lada {Bradová} and Radoslav {Novotný} and Tomáš {Opravil} and František {Šoukal}",
  title="HYBRID ALKALI-ACTIVATED PORTLAND CEMENTS",
  annote="The most promising way to improve the sustainability of cement is to produce blended
Portland cements with supplementary cementitious materials. Blast furnace slag (BFS) is one
of significant pozzolan sources used worldwide in blended cements which contributes to
lowering the environmental impact of cement industry. On the other hand, the replacement of
Portland clinker is connected with undesirable effects such as the reduction of early strength
development. In order to overcome this disadvantage, the study deals with the development of
hybrid cements in which the utilization of solid waste alkaline activator quickly awakens the
pozzolanic properties of BFS. New types of blended alkali activated cements were designed
to meet the European standard EN 197-1 and classified to the Blastfurnace CEM III cements
in accordance with the mechanical, physical and chemical requirements. The alkali activation
caused an increase of early compressive strength in comparison with reference cement and at
the same time the initial setting time was delayed which is also interesting from the point of
view of concrete production. Moreover, this non-traditional hybrid alkali-activated
Blastfurnace cement provides considerable ecological and economical potential.",
  address="RILEM Publications",
  booktitle="Interdisciplinary Approaches for Cement-based Materials and Structural Concrete: Synergizing Expertise and Bridging Scales of Space and Time",
  chapter="150964",
  doi="10.5281/zenodo.1405563",
  howpublished="print",
  institution="RILEM Publications",
  year="2018",
  month="october",
  pages="455--460",
  publisher="RILEM Publications",
  type="conference paper"
}