TY - JOUR
T1 - Steel furnace slag aggregate expansion and hardened concrete properties
AU - Brand, Alexander S.
AU - Roesler, Jeffery R.
N1 - Funding Information:
This study was jointly supported by the Illinois State Toll Highway Authority (ISTHA) and the National Slag Association (NSA); acknowledgement is given to Steve Gillen and Ross Bentsen (ISTHA), John Yzenas (Edw. C. Levy Co.), and Karen Kiggins (NSA). Acknowledgement is given to Abbas Kachwalla and Jeff LaHucik for all the assistance with testing, and to Tube City IMS, South Shore Slag, and Edw. C. Levy Co. for providing SFS materials. The XRD and TGA were carried out in part in the Frederick Seitz Materials Research Laboratory Central Research Facilities, University of Illinois.
Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.
PY - 2015/7/1
Y1 - 2015/7/1
N2 - Steel furnace slag (SFS) is an industrial by-product that is not commonly utilized in bound applications because of its potential to contain high contents of free calcium and magnesium oxides, which expand when hydrated. In this study, a process was developed to quickly screen SFS aggregates for free oxide contents and expansion potential using complexometric titration, thermogravimetric analysis, and an autoclave expansion test. Two of the three SFS aggregate sources (high and low expansion) were selected for testing as a coarse aggregate in concrete. It was confirmed that SFS aggregates in concrete can produce acceptable strength properties, suitable freeze/thaw durability, and exceptional fracture properties. However, these SFS aggregates produced greater free drying shrinkage than concrete with dolomite aggregates. For SFS aggregates having low expansion potential, the hardened property tests indicate that SFS may be a suitable aggregate for concrete.
AB - Steel furnace slag (SFS) is an industrial by-product that is not commonly utilized in bound applications because of its potential to contain high contents of free calcium and magnesium oxides, which expand when hydrated. In this study, a process was developed to quickly screen SFS aggregates for free oxide contents and expansion potential using complexometric titration, thermogravimetric analysis, and an autoclave expansion test. Two of the three SFS aggregate sources (high and low expansion) were selected for testing as a coarse aggregate in concrete. It was confirmed that SFS aggregates in concrete can produce acceptable strength properties, suitable freeze/thaw durability, and exceptional fracture properties. However, these SFS aggregates produced greater free drying shrinkage than concrete with dolomite aggregates. For SFS aggregates having low expansion potential, the hardened property tests indicate that SFS may be a suitable aggregate for concrete.
KW - Autoclave expansion
KW - Basic oxygen furnace (BOF) slag
KW - Electric arc furnace (EAF) slag
KW - Free CaO
KW - Free MgO
KW - Steel furnace slag (SFS)
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U2 - 10.1016/j.cemconcomp.2015.04.006
DO - 10.1016/j.cemconcomp.2015.04.006
M3 - Article
AN - SCOPUS:84927712898
SN - 0958-9465
VL - 60
SP - 1
EP - 9
JO - Cement and Concrete Composites
JF - Cement and Concrete Composites
ER -