A Mathematical Correlation of Compressive Strength Among Silica, Alumina and Calcia Present in Composite Red Mud and Iron Ore Tailingbricks
- Title
- A Mathematical Correlation of Compressive Strength Among Silica, Alumina and Calcia Present in Composite Red Mud and Iron Ore Tailingbricks
- Creator
- Beulah M.; Das P.; Gayathri G.; Sudhir M.R.; Sarath Chandra K.; Sasha Rai P.
- Description
- Waste Red Mud generated from bauxite beneficiation in aluminium industry contains sodium oxide in minor amount along with silica and alumina in significant quantities. Waste iron ore tailings from beneficiation of iron ore in steel industry contain silica and alumina in significant quantities. A combination of both these materials in different amounts along with GGBS and lime addition resulted in complex alkali-activated reaction products consisting of (Si/Al), (Ca/Si) and (Ca/(Si+Al)) complexes which influence compressive strength of the test samples on curing for extended time periods at room temperature. Individual correlation coefficients of these complexes with compressive strength yielded high values with (Si/Al) and (Ca/Si+Al) ratios (0.92 and 0.96, respectively) while showing a poor correlation coefficient with (Ca/Si) ratio (0.88). A direct regression analysis between compressive strength and (Si/Al) ratio and (Ca/Si+Al) ratio indicated negative values with (Si/Al) ratios but positive values with (Ca/ (Si+Al)) ratios. It is therefore concluded that the addition of lime and GGBS (contributed from both GGBS and lime addition) resulted in Ca-Si-Al complex formations which are responsible for improved compressive strength of the samples. 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
- Source
- Lecture Notes in Civil Engineering, Vol-143 LNCE, pp. 313-327.
- Date
- 2021-01-01
- Publisher
- Springer Science and Business Media Deutschland GmbH
- Subject
- Ground granulated blast slag (GGBS); Iron ore tailings (IOT); Lime stabilizer; Red Mud
- Coverage
- Beulah M., School of Engineering and Technology, Christ (Deemed to be University), Bangalore, India; Das P., ACS College of Engineering, Bangalore, India; Gayathri G., ACS College of Engineering, Bangalore, India; Sudhir M.R., SOET, Christ (Deemed to be University), Bangalore, India; Sarath Chandra K., School of Engineering and Technology, Christ (Deemed to be University), Bangalore, India; Sasha Rai P., KS School of Engineering and Management, Bangalore, India
- Rights
- Restricted Access
- Relation
- ISSN: 23662557; ISBN: 978-981336968-9
- Format
- Online
- Language
- English
- Type
- Conference paper
Collection
Citation
Beulah M.; Das P.; Gayathri G.; Sudhir M.R.; Sarath Chandra K.; Sasha Rai P., “A Mathematical Correlation of Compressive Strength Among Silica, Alumina and Calcia Present in Composite Red Mud and Iron Ore Tailingbricks,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 25, 2025, https://archives.christuniversity.in/items/show/20614.