Publication detail

The Effects of Silica Fume and Superplasticizer Type on the Properties and Microstructure of Reactive Powder Concrete

ŠOUKAL, F. BOCIAN, L. NOVOTNÝ, R. DLABAJOVÁ, L. ŠULEKOVÁ, N. HAJZLER, J. KOUTNÝ, O. DRDLOVÁ, M.

Original Title

The Effects of Silica Fume and Superplasticizer Type on the Properties and Microstructure of Reactive Powder Concrete

Type

journal article in Web of Science

Language

English

Original Abstract

This paper deals with the optimization of reactive powder concrete mixtures with respect to the addition of silica fume and the type of polycarboxylate superplasticizer used. First, the properties of reactive powder concrete with eight different commercial polycarboxylate superplasticizers were tested in terms of workability, specific weight, and mechanical properties. It was found that different commercially available superplasticizers had significant effects on the slump flow, specific weight, and compressive and flexural strengths. The optimal superplasticizer (BASF ACE430) was selected for further experiments in order to evaluate the influences of silica fume and superplasticizer content on the same material properties. The results showed that the silica fume and superplasticizer content had considerable effects on the mini-cone slump flow value, specific weight, flexural and compressive strengths, and microstructure. There were clearly visible trends and local minima and maxima of the measured properties. The optimal reactive powder concrete mixture had a composition of 3.5–4.0% superplasticizer and 15–25% silica fume.

Keywords

reactive powder concrete; ultra-high-performance concrete; silica fume; superplasticizer; microstructure; pozzolanic reaction;

Authors

ŠOUKAL, F.; BOCIAN, L.; NOVOTNÝ, R.; DLABAJOVÁ, L.; ŠULEKOVÁ, N.; HAJZLER, J.; KOUTNÝ, O.; DRDLOVÁ, M.

Released

13. 10. 2023

Publisher

MDPI

Location

St. Alban-Anlage 66 4052 Basel, Switzerland

ISBN

1996-1944

Periodical

Materials

Year of study

16

Number

20

State

Swiss Confederation

Pages count

19

URL

https://www.mdpi.com/1996-1944/16/20/6670

Full text in the Digital Library

http://hdl.handle.net/11012/214419

BibTex

@article{BUT184924,
  author="František {Šoukal} and Luboš {Bocian} and Radoslav {Novotný} and Lucie {Dlabajová} and Nikola {Šuleková} and Jan {Hajzler} and Ondřej {Koutný} and Martina {Drdlová}",
  title="The Effects of Silica Fume and Superplasticizer Type on the Properties and Microstructure of Reactive Powder Concrete",
  journal="Materials",
  year="2023",
  volume="16",
  number="20",
  pages="19",
  doi="10.3390/ma16206670",
  issn="1996-1944",
  url="https://www.mdpi.com/1996-1944/16/20/6670"
}