Publication detail

Permeability of High Performance Concrete With the Addition of Modified Polypropylene Fibers at Elevated Temperature

FIEDLEROVÁ, M. BODNÁROVÁ, L. BRUCKNER, H. KIRNBAUER, J.

Original Title

Permeability of High Performance Concrete With the Addition of Modified Polypropylene Fibers at Elevated Temperature

English Title

Permeability of High Performance Concrete With the Addition of Modified Polypropylene Fibers at Elevated Temperature

Type

conference paper

Language

en

Original Abstract

Increasing intensity of road and railway transport and thus a higher risk of accidents leads to the constant increase of safety standards in tunnels. Fire tests undertaken in past showed that increasing temperature leads to evaporation of chemically and physically bounded water and causes explosive spalling of dense high performance concrete (HPC) [1, 2]. New modified PP-fibers with melt flow index (MFI) 2500 provide required fire protection at highly reduced fiber dosage due to decrease of melt viscosity of fiber. Analysis of HPC with the addition of polypropylene fibers of different melt flow indexes and their mode of action is presented in the paper. This paper is focused on clarifying behaviour of concrete at elevated temperature with employing test set-up constructed at Institute of Building Construction and Technology, Vienna University of Technology. This test set-up allows measuring gas permeability of different building materials such as concrete, mortar or ceramic at both high temperature (up to 400°C) and pressure (up to 6 bars).

English abstract

Increasing intensity of road and railway transport and thus a higher risk of accidents leads to the constant increase of safety standards in tunnels. Fire tests undertaken in past showed that increasing temperature leads to evaporation of chemically and physically bounded water and causes explosive spalling of dense high performance concrete (HPC) [1, 2]. New modified PP-fibers with melt flow index (MFI) 2500 provide required fire protection at highly reduced fiber dosage due to decrease of melt viscosity of fiber. Analysis of HPC with the addition of polypropylene fibers of different melt flow indexes and their mode of action is presented in the paper. This paper is focused on clarifying behaviour of concrete at elevated temperature with employing test set-up constructed at Institute of Building Construction and Technology, Vienna University of Technology. This test set-up allows measuring gas permeability of different building materials such as concrete, mortar or ceramic at both high temperature (up to 400°C) and pressure (up to 6 bars).

Keywords

polypropylene fibers, high performance concrete, permeability, explosive spalling

RIV year

2015

Released

19.11.2015

Publisher

Institut für Hochbau und Technologie

Location

Technische Universität Wien

ISBN

978-3-900576-07-3

Book

EVENT MATERIALS

Edition

1

Edition number

1

Pages from

84

Pages to

91

Pages count

266

Documents

BibTex


@inproceedings{BUT122260,
  author="Michaela {Dvořáková} and Lenka {Bodnárová} and Heinrich {Bruckner} and Johannes {Kirnbauer}",
  title="Permeability of High Performance Concrete With the Addition of Modified Polypropylene Fibers at Elevated Temperature",
  annote="Increasing intensity of road and railway transport and thus a higher risk of accidents leads to the constant increase of safety standards in tunnels. Fire tests undertaken in past showed that increasing temperature leads to evaporation of chemically and physically bounded water and causes explosive spalling of dense high performance concrete (HPC) [1, 2]. New modified PP-fibers with melt flow index (MFI) 2500 provide required fire protection at highly reduced fiber dosage due to decrease of melt viscosity of fiber. Analysis of HPC with the addition of polypropylene fibers of different melt flow indexes and their mode of action is presented in the paper. This paper is focused on clarifying behaviour of concrete at elevated temperature with employing test set-up constructed at Institute of Building Construction and Technology, Vienna University of Technology. This test set-up allows measuring gas permeability of different building materials such as concrete, mortar or ceramic at both high temperature (up to 400°C) and pressure (up to 6 bars).",
  address="Institut für Hochbau und Technologie",
  booktitle="EVENT MATERIALS",
  chapter="122260",
  edition="1",
  howpublished="print",
  institution="Institut für Hochbau und Technologie",
  year="2015",
  month="november",
  pages="84--91",
  publisher="Institut für Hochbau und Technologie",
  type="conference paper"
}