Modification of Lightweight Aggregates’ Microstructure by Used Motor Oil Addition
An admixture of lightweight aggregate substrates (beidellitic clay containing 10 wt % of natural clinoptilolite or Na-P1 zeolite) with used motor oil (1 wt %–8 wt %) caused marked changes in the aggregates’ microstructure, measured by a combination of mercury porosimetry (MIP), microtomography (MT),...
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doaj-5682c1bab24246f8910b0037bd2641f82020-11-24T21:07:35ZengMDPI AGMaterials1996-19442016-10-0191084510.3390/ma9100845ma9100845Modification of Lightweight Aggregates’ Microstructure by Used Motor Oil AdditionMałgorzata Franus0Grzegorz Jozefaciuk1Lidia Bandura2Krzysztof Lamorski3Mieczysław Hajnos4Wojciech Franus5Department of Geotechnical Engineering, Faculty of Civil Engineering and Architecture, Lublin University of Technology, Nadbystrzycka 40, 20-618 Lublin, PolandDepartment of Physical Chemistry of Porous Materials, Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, PolandDepartment of Geotechnical Engineering, Faculty of Civil Engineering and Architecture, Lublin University of Technology, Nadbystrzycka 40, 20-618 Lublin, PolandDepartment of Physical Chemistry of Porous Materials, Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, PolandDepartment of Physical Chemistry of Porous Materials, Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, PolandDepartment of Geotechnical Engineering, Faculty of Civil Engineering and Architecture, Lublin University of Technology, Nadbystrzycka 40, 20-618 Lublin, PolandAn admixture of lightweight aggregate substrates (beidellitic clay containing 10 wt % of natural clinoptilolite or Na-P1 zeolite) with used motor oil (1 wt %–8 wt %) caused marked changes in the aggregates’ microstructure, measured by a combination of mercury porosimetry (MIP), microtomography (MT), and scanning electron microscopy. Maximum porosity was produced at low (1%–2%) oil concentrations and it dropped at higher concentrations, opposite to the aggregates’ bulk density. Average pore radii, measured by MIP, decreased with an increasing oil concentration, whereas larger (MT) pore sizes tended to increase. Fractal dimension, derived from MIP data, changed similarly to the MIP pore radius, while that derived from MT remained unaltered. Solid phase density, measured by helium pycnometry, initially dropped slightly and then increased with the amount of oil added, which was most probably connected to changes in the formation of extremely small closed pores that were not available for He atoms.http://www.mdpi.com/1996-1944/9/10/845lightweight aggregatesused oilpore structuremicrotomographyporosimetry |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Małgorzata Franus Grzegorz Jozefaciuk Lidia Bandura Krzysztof Lamorski Mieczysław Hajnos Wojciech Franus |
spellingShingle |
Małgorzata Franus Grzegorz Jozefaciuk Lidia Bandura Krzysztof Lamorski Mieczysław Hajnos Wojciech Franus Modification of Lightweight Aggregates’ Microstructure by Used Motor Oil Addition Materials lightweight aggregates used oil pore structure microtomography porosimetry |
author_facet |
Małgorzata Franus Grzegorz Jozefaciuk Lidia Bandura Krzysztof Lamorski Mieczysław Hajnos Wojciech Franus |
author_sort |
Małgorzata Franus |
title |
Modification of Lightweight Aggregates’ Microstructure by Used Motor Oil Addition |
title_short |
Modification of Lightweight Aggregates’ Microstructure by Used Motor Oil Addition |
title_full |
Modification of Lightweight Aggregates’ Microstructure by Used Motor Oil Addition |
title_fullStr |
Modification of Lightweight Aggregates’ Microstructure by Used Motor Oil Addition |
title_full_unstemmed |
Modification of Lightweight Aggregates’ Microstructure by Used Motor Oil Addition |
title_sort |
modification of lightweight aggregates’ microstructure by used motor oil addition |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2016-10-01 |
description |
An admixture of lightweight aggregate substrates (beidellitic clay containing 10 wt % of natural clinoptilolite or Na-P1 zeolite) with used motor oil (1 wt %–8 wt %) caused marked changes in the aggregates’ microstructure, measured by a combination of mercury porosimetry (MIP), microtomography (MT), and scanning electron microscopy. Maximum porosity was produced at low (1%–2%) oil concentrations and it dropped at higher concentrations, opposite to the aggregates’ bulk density. Average pore radii, measured by MIP, decreased with an increasing oil concentration, whereas larger (MT) pore sizes tended to increase. Fractal dimension, derived from MIP data, changed similarly to the MIP pore radius, while that derived from MT remained unaltered. Solid phase density, measured by helium pycnometry, initially dropped slightly and then increased with the amount of oil added, which was most probably connected to changes in the formation of extremely small closed pores that were not available for He atoms. |
topic |
lightweight aggregates used oil pore structure microtomography porosimetry |
url |
http://www.mdpi.com/1996-1944/9/10/845 |
work_keys_str_mv |
AT małgorzatafranus modificationoflightweightaggregatesmicrostructurebyusedmotoroiladdition AT grzegorzjozefaciuk modificationoflightweightaggregatesmicrostructurebyusedmotoroiladdition AT lidiabandura modificationoflightweightaggregatesmicrostructurebyusedmotoroiladdition AT krzysztoflamorski modificationoflightweightaggregatesmicrostructurebyusedmotoroiladdition AT mieczysławhajnos modificationoflightweightaggregatesmicrostructurebyusedmotoroiladdition AT wojciechfranus modificationoflightweightaggregatesmicrostructurebyusedmotoroiladdition |
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