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Influence of intensive vacuum mixing and heat treatment on compressive strength and microstructure of reactive powder concrete incorporating secondary copper slag as supplementary cementitious material

Romy Suryaningrat Edwin UGent, Elke Gruyaert and Nele De Belie UGent (2017) CONSTRUCTION AND BUILDING MATERIALS. 155. p.400-412
abstract
In this study the effect of vacuum mixing and heat treatment on the compressive strength and microstructure of reactive powder concrete (RPC), made with secondary copper slag as partial cement replacement is investigated. The quickly cooled granulated copper slag was ground using a planetary ball mill. A low water-to-binder ratio of 0.185 was chosen. The series of concrete mixtures and cement paste samples were produced with copper slag contents from 0 to 20 wt%. The pozzolanic activity of slag was determined by the Frattini test. The performance of RPC mixed under vacuum conditions and heat-cured was compared to that of RPC mixed at atmospheric pressure without heat treatment. The porosity evolution of RPC was investigated by mercury intrusion porosimetry. A higher workability of the fresh RPC was obtained by mixing under atmospheric pressure. The presence of copper slag in the RPC had no adverse effect on compressive strength for all treatments. The heat treatment decreases the porosity and enhances the RPC strength. Assessment of the pozzolanic activity by means of the Frattini test indicates low pozzolanic reaction of the slag after 15 days. The presence of slag in the paste tends to decrease the total heat production of the paste. The use of copper slag as cement replacement in the RPC production decreases the energy consumption and reduces the carbon footprint. (C) 2017 Elsevier Ltd. All rights reserved.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
HIGH-PERFORMANCE CONCRETE, BLAST-FURNACE SLAG, MECHANICAL-PROPERTIES, FINE AGGREGATE, COARSE AGGREGATE, BYPASS DUST, TEMPERATURE, HYDRATION, PRESSURE, WASTE, Copper slag, Reactive powder concrete, Compressive strength, Vacuum, mixing-heat treatment, Porosity, Pozzolanic activity
journal title
CONSTRUCTION AND BUILDING MATERIALS
Constr. Build. Mater.
volume
155
pages
13 pages
publisher
Elsevier Sci Ltd
place of publication
Oxford
Web of Science type
Article
Web of Science id
000414886800037
ISSN
0950-0618
1879-0526
DOI
10.1016/j.conbuildmat.2017.08.036
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
8557536
handle
http://hdl.handle.net/1854/LU-8557536
date created
2018-03-27 13:33:59
date last changed
2018-05-14 09:37:48
@article{8557536,
  abstract     = {In this study the effect of vacuum mixing and heat treatment on the compressive strength and microstructure of reactive powder concrete (RPC), made with secondary copper slag as partial cement replacement is investigated. The quickly cooled granulated copper slag was ground using a planetary ball mill. A low water-to-binder ratio of 0.185 was chosen. The series of concrete mixtures and cement paste samples were produced with copper slag contents from 0 to 20 wt\%. The pozzolanic activity of slag was determined by the Frattini test. The performance of RPC mixed under vacuum conditions and heat-cured was compared to that of RPC mixed at atmospheric pressure without heat treatment. The porosity evolution of RPC was investigated by mercury intrusion porosimetry. A higher workability of the fresh RPC was obtained by mixing under atmospheric pressure. The presence of copper slag in the RPC had no adverse effect on compressive strength for all treatments. The heat treatment decreases the porosity and enhances the RPC strength. Assessment of the pozzolanic activity by means of the Frattini test indicates low pozzolanic reaction of the slag after 15 days. The presence of slag in the paste tends to decrease the total heat production of the paste. The use of copper slag as cement replacement in the RPC production decreases the energy consumption and reduces the carbon footprint. (C) 2017 Elsevier Ltd. All rights reserved.},
  author       = {Edwin, Romy Suryaningrat and Gruyaert, Elke and De Belie, Nele},
  issn         = {0950-0618},
  journal      = {CONSTRUCTION AND BUILDING MATERIALS},
  keyword      = {HIGH-PERFORMANCE CONCRETE,BLAST-FURNACE SLAG,MECHANICAL-PROPERTIES,FINE AGGREGATE,COARSE AGGREGATE,BYPASS DUST,TEMPERATURE,HYDRATION,PRESSURE,WASTE,Copper slag,Reactive powder concrete,Compressive strength,Vacuum,mixing-heat treatment,Porosity,Pozzolanic activity},
  language     = {eng},
  pages        = {400--412},
  publisher    = {Elsevier Sci Ltd},
  title        = {Influence of intensive vacuum mixing and heat treatment on compressive strength and microstructure of reactive powder concrete incorporating secondary copper slag as supplementary cementitious material},
  url          = {http://dx.doi.org/10.1016/j.conbuildmat.2017.08.036},
  volume       = {155},
  year         = {2017},
}

Chicago
Edwin, Romy Suryaningrat, Elke Gruyaert, and Nele De Belie. 2017. “Influence of Intensive Vacuum Mixing and Heat Treatment on Compressive Strength and Microstructure of Reactive Powder Concrete Incorporating Secondary Copper Slag as Supplementary Cementitious Material.” Construction and Building Materials 155: 400–412.
APA
Edwin, R. S., Gruyaert, E., & De Belie, N. (2017). Influence of intensive vacuum mixing and heat treatment on compressive strength and microstructure of reactive powder concrete incorporating secondary copper slag as supplementary cementitious material. CONSTRUCTION AND BUILDING MATERIALS, 155, 400–412.
Vancouver
1.
Edwin RS, Gruyaert E, De Belie N. Influence of intensive vacuum mixing and heat treatment on compressive strength and microstructure of reactive powder concrete incorporating secondary copper slag as supplementary cementitious material. CONSTRUCTION AND BUILDING MATERIALS. Oxford: Elsevier Sci Ltd; 2017;155:400–12.
MLA
Edwin, Romy Suryaningrat, Elke Gruyaert, and Nele De Belie. “Influence of Intensive Vacuum Mixing and Heat Treatment on Compressive Strength and Microstructure of Reactive Powder Concrete Incorporating Secondary Copper Slag as Supplementary Cementitious Material.” CONSTRUCTION AND BUILDING MATERIALS 155 (2017): 400–412. Print.