Open AccessStudying the influence of fiber reinforcement on the characteristics of roller compacted concrete used in airports with partial replacement of cement by cement kiln dust
Author(s) -
Ali A. Al-Tameemi,
Ehsan A. M. Alkelabi
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/888/1/012011
Subject(s) - cement , materials science , roller compacted concrete , cementitious , compaction , composite material , cement kiln , slump , compressive strength , kiln , flexural strength , reinforcement , fiber , metallurgy
Roller-compacted concrete is defined as that concrete of no-slump consistency in its’ unhardened state that is transported, placed, and compacted by roller compaction. The purpose of this research is to study the effect of using steel fiber reinforcement on the properties of roller compacted concrete in which, 5%, and 10% of the cementitious materials were replaced by cement kiln dust. Different contents of steel fibers were used to reinforce concrete which were compacted using a manually controlled roller device. The results showed that the compressive strength of the roller compacted concrete with 5% replacement of cementitious materials increased by 19, 25, 32, and 42%, when the concrete was reinforced using steel fibers amounts of 30, 50, 70, and 90 Kg per m 3 of concrete respectively. The corresponding increases in the flexural strength were (15, 34, 37, and 40%). Similar increases were recorded for specimens with 10% replacement. The research had confirmed the feasibility of using steel fiber reinforcement to enhance the properties of this kind of concrete to be used in airport pavements. Substitution of 5 to 10 % of the cementitious materials by cement kiln dust will save energy and contribute in decreasing the impact of pollutants on the environment.