Abstract
Alkali activation is promising for low environmental impact soil stabilisation. Given soils’ complexity, there is a lack of fundamental understanding of how the different components in soil influence their alkali activation behaviour. A novel method was developed to compare three natural soils with synthetic versions. Precursors and products were characterised by XRD, SEM, TGA and FTIR to explore the soils’ alkali activation phase formation behaviour. It is shown that only the clay minerals will determine phase formation, whereas most associated minerals had negligible influence. The trade-off between Na:Al and NaOH concentration in mix design means lower plasticity soils are more suitable.
Original language | English |
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Article number | 116816 |
Pages (from-to) | 1-16 |
Number of pages | 16 |
Journal | Construction and Building Materials |
Volume | 229 |
Early online date | 10 Sept 2019 |
DOIs | |
Publication status | Published - 30 Dec 2019 |
Keywords
- Alkali activation
- Geopolymer
- Zeolite
- Soil
- Earth
- Stabilisation
- Clay minerals
- Associated minerals
ASJC Scopus subject areas
- Civil and Structural Engineering
- Inorganic Chemistry
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Dive into the research topics of 'Influence of clay minerals and associated minerals in alkali activation of soils'. Together they form a unique fingerprint.Datasets
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Dataset for "Influence of clay minerals and associated minerals in alkali activation of soils"
Marsh, A. (Creator), Heath, A. (Supervisor), Patureau, P. (Supervisor), Evernden, M. (Supervisor) & Walker, P. (Supervisor), University of Bath, 10 Sept 2019
DOI: 10.15125/BATH-00565
Dataset
Equipment
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Fourier Transform Infrared spectrometer (FT-IR)
Material and Chemical Characterisation (MC2)Facility/equipment: Equipment