A study on hydrated phases of ternary blended binder via thermal analysis
List of Authors
  • Nuril Izzeaty Ishak

Keyword
  • Ternary blended binder, GGBS, RHA, Thermal analysis, TGA/DTA

Abstract
  • Replacing the cement content with alternatives material such as GGBS is a wonderful way to solve the issues of environmental degradation caused by cement manufacture. However, the concrete produced using GGBS has some drawbacks such as lower initial strength and higher dry shrinkage. Thus, the ternary blended binder replacement was proven to improve the properties of concrete due to its synergistic effect. RHA is an agricultural waste achieving broader awareness because of its considerable impact on the microstructural properties as well as improving the strength of the concrete. Therefore, in this study, cement as a primary binder containing high-volume GGBS was prepared with RHA via adiabatic temperature (steam curing) and normal curing conditions. The effects of increasing the amount of RHA pre-treated as replacement level of the primary binder with 5%, 10%, 15%, and 20%, with a constant amount of GGBS (50% of slag) were characterized using thermogravimetric analysis (TGA/DTA). The findings showed that RHA reacted as a filler and can be used as a secondary source of SiO2 in cement containing high-volume GGBS production. The inclusion of 60% replacement of RHA-GGBS improves the CSH gel due to CH consumption with SiO2 which is more prominent in long terms ages.

Reference
  • 1. Ban, C. ., & Kang, C. W. (2019). Durability Properties of Ternary Blended Flowable High Performance Concrete Containing Ground Granulated Blast Furnace Slag and Pulverized Fuel Ash. Jurnal Teknologi, 81(4), 97–104.

    2. Cassagnabère, F., Mouret, M., & Escadeillas, G. (2009). Early hydration of clinker–slag–metakaolin combination in steam curing conditions, relation with mechanical properties. Cement and Concrete Research, 39(12), 1164–1173.

    3. Christopher, F., Bolatito, A., & Ahmed, S. (2017). Structure and properties of mortar and concrete with rice husk ash as partial replacement of ordinary Portland cement – A review. International Journal of Sustainable Built Environment, 1–18. https://doi.org/10.1016/j.ijsbe.2017.07.004

    4. Cordeiro, G. C., Toledo Filho, R. D., & De Moraes Rego Fairbairn, E. (2009). Use of ultrafine rice husk ash with high-carbon content as pozzolan in high performance concrete. Materials and Structures/Materiaux et Constructions, 42(7), 983–992. https://doi.org/10.1617/s11527-008-9437-z

    5. Deboucha, W., Leklou, N., Khelidj, A., & Oudjit, M. N. (2017). Hydration development of mineral additives blended cement using thermogravimetric analysis (TGA): Methodology of calculating the degree of hydration. Construction and Building Materials, 146, 687–701. https://doi.org/10.1016/j.conbuildmat.2017.04.132

    6. Nidzam, R. M., & Kinuthia, J. M. (2010). Sustainable soil stabilisation with blastfurnace slag - a review. Proceedings of Institution of Civil Engineers: Construction Materials, 163(3), 157–165. https://doi.org/10.1680/coma.2010.163.3.157

    7. Pane, I., & Hansen, W. (2005). Investigation of blended cement hydration by isothermal calorimetry and thermal analysis, 35, 1155–1164. https://doi.org/10.1016/j.cemconres.2004.10.027

    8. Saraya, M. (2010). Stopping of cement hydration by various methods. HBRC Journal, 6(2), 46–58. Retrieved from https://www.researchgate.net/publication/266738538

    9. Zareei, S. A., Ameri, F., Dorostkar, F., & Ahmadi, M. (2017). Rice husk ash as a partial replacement of cement in high strength concrete containing micro silica: Evaluating durability and mechanical properties. Case Studies in Construction Materials, 7(October 2016), 73–81. https://doi.org/10.1016/j.cscm.2017.05.001