Abstract
This paper deals with the investigation of concrete containing varying replacement percentages of Alccofine and conjointly Alccofine and different proportions of steel fibers with aspect ratio 50 to investigate mechanical and morphological properties. The replacement levels of Alccofine was chosen as 5% to 15% with 5% increment and steel fibers of 0.5% to1.5% with an increment of 0.5% by volume of concrete. Mix design was done by using British D.O.E method, fixing water binder ratio as 0.45. Results indicated that concrete replaced with Alccofine in addition of steel fibers increased the compressive and flexural strength of concrete. The maximum strength was obtained for the concrete mix containing 15% Alccofine and 1.5% circular crimped steel fibers. Morphological studies indicated the excess C-S-H gel for concrete mixes containing Alccofine as compared to conventional concrete. Hence, it can be culminated that Alccofine and addition of steel fibers increases the strength properties and crack resistant strength of concrete.
Highlights
Chakravarthy et al, [4] had done the analysis on compressive strength with partial replacement of cement with Alccofine and compared the results with conventional concrete and concluded that the compressive strength was maximum at 16% and on further the strength decreased
It is observed that on increasing the percentage of steel fibers to concrete replaced with varying percentages of Alccofine strength has been gradually increased and achieved maximum strength on addition of steel fibers of 1.5%
Concrete replaced with different percentages of Alccofine irrespective of steel fibers, it was perceived that strength increases on increasing the percentage replacement of Alccofine and yielded maximum strength for 15% replacement
Summary
Concrete quality will depends upon the strength properties and depends on improving the durability of the concrete, reducing the porosity and thereby producing greener concrete [1]. Krishnaraj et al, [5] had done the experimental investigation on the concrete admixed with Alccofine and fly-ash with and without super-plasticizer and from the results obtained authors. Concluded that blending of Alccofine and fly ash will increase the strength and durability properties. Surendra et al, [6] has conducted the experimental study on the strength of concrete containing GGBS and Alccofine and concluded that strength increases with replacement of cement by GGBS and Alccofine because of the hydraulic properties and better compaction of Alccofine and GGBS. Kaur et al, [7] investigated experimentally various properties of mixed fiber reinforced concrete for structural application and from the results obtained authors concluded that utilization of fibers in concrete improves the static and dynamic properties and increases the ability to sustain a load without excessive deformation. Ghaffar et al, [8] had done research on the usage of steel fibers in concrete to enhance the mechanical properties and concluded that inclusion of steel fibers improves the various strengths and gain of strength depends on the amount of fiber content in concrete
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