Influence of polymer modification on the microstructure of shielding concrete

Kamil Załęgowski , Tomasz Piotrowski , Andrzej Garbacz

Abstract

In this paper an analysis of the influence of polymer modification on the microstructure, shielding properties against neutrons, and compressive strength of heavy-weight magnetite concrete is carried out. The modifications involve the addition of acrylic or epoxy dispersions as well as micro- or/and macrofibers. A computer image analysis method is used to evaluate the microstructure of concretes and parameters of pore structure are calculated; these parameters include relative volume fraction, relative specific surface area, and pore arrangement ratios, including a proprietary ratio based on Voronoi tessellation. An assessment of significance of differences between stereological parameters of reference concrete and polymer modified concretes, as well as the impact of polymer form (dispersion or fibers) on shielding properties and compressive strength is carried out using Student’s t-test. The results show that except for the effect of the addition of both polypropylene micro- and macrofibers on the relative volume of pores, all other modifications result in statistically significant changes in the values of stereological parameters. Nevertheless, it is shown that neither polymer dispersions nor fibers have a statistically significant impact on shielding properties, but that they do influence compressive strength.
Author Kamil Załęgowski (FCE / ICE)
Kamil Załęgowski,,
- The Institute of Civil Engineering
, Tomasz Piotrowski (FCE / ICE)
Tomasz Piotrowski,,
- The Institute of Civil Engineering
, Andrzej Garbacz (FCE / ICE)
Andrzej Garbacz,,
- The Institute of Civil Engineering
Journal seriesMaterials, ISSN 1996-1944
Issue year2020
Vol13
No498
Pages1-15
Publication size in sheets0.7
Keywords in Englishpolymer modification; polymer dispersions; polymer fibers; concrete microstructure; image analysis method; stereological parameters
ASJC Classification2500 General Materials Science
DOIDOI:10.3390/ma13030498
URL https://www.mdpi.com/1996-1944/13/3/498/pdf
Languageen angielski
File
materials-13-00498.pdf 3.94 MB
Score (nominal)140
Score sourcejournalList
ScoreMinisterial score = 140.0, 18-06-2020, ArticleFromJournal
Publication indicators Scopus Citations = 2; WoS Citations = 0; GS Citations = 2.0; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.285; WoS Impact Factor: 2018 = 2.972 (2) - 2018=3.532 (5)
Citation count*2 (2020-09-26)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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