Investigation on Compressive Characteristics of Steel-Slag Concrete

The compressive characteristics of the steel-slag concrete were investigated through an experimental test. The term "steel-slag concrete" in this research work was defined as a kind of concrete using steel-slag material as a coarse aggregate replacement. Three types of the steel-slag concr...

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Bibliographic Details
Published in:Materials 2020-04, Vol.13 (8), p.1928
Main Authors: Nguyen, Thi-Thuy-Hang, Phan, Duc-Hung, Mai, Hong-Ha, Nguyen, Duy-Liem
Format: Article
Language:English
Subjects:
Age
Cement hydration
Compressive strength
Concrete
Concrete properties
Failure analysis
Investigations
Laboratories
Modulus of elasticity
Physical properties
Poisson's ratio
Production capacity
Reinforced concrete
Shape effects
Slag
Water-cement ratio
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Summary:The compressive characteristics of the steel-slag concrete were investigated through an experimental test. The term "steel-slag concrete" in this research work was defined as a kind of concrete using steel-slag material as a coarse aggregate replacement. Three types of the steel-slag concretes were examined under compression as follows: XT01, XT02, XT03 with their cement/water ratios of 1.76, 2.00, 2.21, respectively. The coarse aggregate used in producing concrete was steel-slag material, while the fine aggregate was traditional river sand; the ratio of coarse aggregate to fine aggregate was kept constant at a value of 1.98. Firstly, the age-dependent compressive strength of the steel-slag concretes were investigated up to one year; it was clear that the concrete strength increased rapidly in 7 days, then more and more slowly after that. Secondly, the modulus of elasticity and Poisson's ratio of the steel-slag concretes were explored at the 28-day age. Thirdly, there was an important size and shape effect on the compressive strength of the XT02, and its significance of brittleness in failure was analytically analyzed. Lastly, the effects of water amount added in the XT02 on its compressive strength and slump were evaluated at the 28-day age.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma13081928