Next Article in Journal
Preparation and Tribological Study of Graphene Coating on Glass Fiber-Reinforced Composite Using Modified Percolating-Assisted Resin Film Infusion Method
Next Article in Special Issue
Load Capacity and Displacement of Recycled Concrete and Self-Insulation Block Masonry Wall
Previous Article in Journal
The Impact of Zinc Oxide Nanoparticles on Male (In)Fertility
Previous Article in Special Issue
Durability and Aesthetics of Architectural Concrete under Chloride Attack or Carbonation
Open AccessArticle

Mechanical Properties of Concrete Containing Liquefied Red Mud Subjected to Uniaxial Compression Loads

1
Department of Architectural Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea
2
Department of Architecture, Woosuk University, Jincheon, 27841, Korea
*
Author to whom correspondence should be addressed.
Materials 2020, 13(4), 854; https://doi.org/10.3390/ma13040854
Received: 27 December 2019 / Revised: 28 January 2020 / Accepted: 10 February 2020 / Published: 13 February 2020
(This article belongs to the Special Issue Concrete and Construction Materials)
This study used liquefied red mud (RM) sludge, an aluminum industry by-product, as a construction material. Accordingly, various methods were examined that used the fabricated liquefied red mud (LRM) as an admixture for concrete, and the mechanical properties of concrete were then evaluated according to the cement type and the amount of LRM. The LRM mixing methods (replacement and addition) were compared, and the slump and compressive strengths of concrete were evaluated for each method. To examine the mechanical properties according to the cement type and the amount of LRM, two types of cement (ordinary Portland cement and slag cement (SC)) were used, and 20 and 40 wt% LRM (with respect to the cement weight) were added. The mechanical properties of the stress–strain curve (SSC), compressive strength, peak strain, and elastic modulus were quantified. When the slump and compressive strength of concrete were considered based on the experimental results, the addition LRM mixing method was recommended as the appropriate method for LRM. As the addition of LRM increased, the mechanical properties of concrete degraded. However, when SC was used, the mechanical properties did not significantly change when different amounts of LRM were added (up to 20%). In addition, the SSC of LRM concrete could be approximated based on the use of the relationship of the compressive strength and peak strain according to the cement type and the amount of LRM. View Full-Text
Keywords: cement type; liquefied red mud; mechanical property; stress–strain curve; compression load cement type; liquefied red mud; mechanical property; stress–strain curve; compression load
Show Figures

Figure 1

MDPI and ACS Style

Choe, G.; Kang, S.; Kang, H. Mechanical Properties of Concrete Containing Liquefied Red Mud Subjected to Uniaxial Compression Loads. Materials 2020, 13, 854.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop