Influence of Br-Mk Blend on Micro Structure, Workability and Mechanical Properties of Concrete
Kotha Bala Tripura Sundari1, Venkeswaram Ramanjaneyulu2, Chandolu Raaga Praneetha3, Chava Venkatesh4, Polu Sathish5
1Kotha Bala Tripura Sundari, Civil Engineering, VFSTR Deemed to be University, Guntur, A.P, India.
2Venkeswaram Ramanjaneyulu, Civil Engineering, Narasaraopeta College of engineering, Narasaraopeta, A.P, India.
3Chandolu Raaga Praneetha, Civil Engineering, VFSTR Deemed to be University, Guntur, A.P, India.
4Chava Venkatesh, Civil Engineering, VFSTR Deemed to be University, Guntur, A.P, India.
5Polu Sathish, Civil Engineering, VFSTR Deemed to be University, Guntur, A.P, India.
Manuscript received on 02 June 2019 | Revised Manuscript received on 10 June 2019 | Manuscript published on 30 June 2019 | PP: 151-155 | Volume-8 Issue-8, June 2019 | Retrieval Number: G6204058719/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: From the past few decades, a number of researchers are working on concrete by diffusing some substances such as industrial wastes and natural pozzolanic material in order to reduce the pollution as well as the economy. Hence, to minimize the environmental impact due to industrial waste, present work is initiated. This research paper informs about the modification of cement by adding two different mineral admixtures to it and examines how mechanical properties and microstructure of concrete are improved by this alteration. Bauxite residue (BR) and Metakaolin (MK), which are finer than ordinary Portland cement, are introduced as secondary and tertiary mineral admixtures. Apart from normal concrete, four BR-MK concrete mixes are prepared by partially replacing the cement with BR-MK blend at intervals of 5%, 10%, 15% and 20%. BR-MK blend is prepared by adding bauxite residue and metakaolin in equal proportions. Slump cone test, compressive, flexural and split tensile strength tests are conducted to know the workability as well as mechanical resistance of concrete. In order to know the microstructure of concrete SEM and XRD analyses are executed to the BR-MK concrete mix having higher compressive strength and to the normal concrete mix. Results are showing that BR-MK concrete mix with 15% replacement level has shown greater improvement in microstructure and mechanical properties of concrete.
Keyword: Bauxite Residue (BR), Metakaolin (MK), Workability, Mechanical Properties, Micro structure.
Scope of the Article: Mechanical Maintenance