Godani, Palash and Priya, T. Shanmuga and Alengaram, U. Johnson (2024) Evaluation of chemo-physio-mechanical characteristics of GGBS-MBS-based ready-mix geopolymer under ambient curing condition. Construction and Building Materials, 449. ISSN 0950-0618, DOI https://doi.org/10.1016/j.conbuildmat.2024.138202.
Full text not available from this repository.Abstract
This research demonstrates the synthesis of GGBS-based ready-mix (one-part) geopolymer (RMG) utilizing MBS as partial replacement to GGBS (10, 20 and 30 % by-mass) in addition to solid-alkaline reagents (NaOH-flakes and Na2SiO3 powder) using thermal and mechanical treatments, resulting in the formation of ``ready-to-use'' geopolymer product, ``just-add-water'' alike cement. The RMG was characterized by analyzing mineral phases, functional-groups identification followed by surface-morphology and elemental analysis at multiple stages, and engineering properties such as setting-time, flowability, compressive strength and ultrasonic-pulse-velocity were evaluated under ambient curing condition. The results show that GGBS-MBS-based RMG has dense morphology, affirming the development of C-S-H and C(N)-A-S-H gels due to its amorphous nature with some crystalline-phases (SiO2) which are in-linked to Si-O-Si and Al-O-Si bonds. The dry-mix of GGBS with powdered-Na2SiO3 and 4 m molality NaOH (Na2SiO3/NaOH=1), pre-heated at 105 +/- 5 degrees C for 6 h, followed by 6 h ball-milling with 20 % MBS replacement, achieved the highest 28-day compressive strength of 72.8 MPa, 10 % higher than the referenced mix and had satisfactory UPV results. The RMG not only solves handling problems caused due to concentrated aqueous-alkaline reagents used in two-part geopolymer synthesis but also provides sustainability by utilizing industrial and agricultural waste/by-products, hence reducing Portland cement demand, carbon footprint and waste-disposal issues.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Ready-mix geopolymer; Ground granulated blast furnace slag; Micronized biomass silica; Alkaline reagent; Compressive strength; Microstructure properties |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering > Department of Civil Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 22 Oct 2025 01:57 |
| Last Modified: | 22 Oct 2025 01:57 |
| URI: | http://eprints.um.edu.my/id/eprint/46487 |
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