Unsaturated behaviour of soils stabilized with fly ash from coal combustion; [COMPORTAMENTO NÃO SATURADO DE SOLOS ESTABILIZADOS COM CINZAS VOLANTES RESULTANTES DA QUEIMA DE CARVÃO]

• Type: Article in International Scientific Journal
• Date: 2024

Authors

Araújo, N (Author) Other; Cristelo, N (Author) Other; António Topa Gomes (Author) FEUP; Miranda, T (Author) Other

Journal

The Journal is awaiting validation by the Administrative Services.

Title: Geotecnia

Vol. 2024

Pages: 37-52

ISSN: 0379-9522

Indexing

Scopus - 0 Citations

Other information

Authenticus ID: P-010-ARZ

DOI: 10.14195/2184-8394_160_3

Abstract (EN): The influence of suction on the mechanical behavior of chemically stabilized soils has not yet been consistently quantified, a situation also motivated by difficulties in the experimental procedure to characterize the unsaturated response. This paper presents retention curves obtained for a soil stabilized with Portland cement or an alkaline cement. Triaxial tests are also presented, for the same curing conditions, up to 90 days. Previous attempts to characterize retention curves for soil-(alkaline) cement are unknown; the results obtained showed that the pore structure is formed at 28 days, before the development of the gel matrix responsible for the increase in strength. The retention curve changed after stabilization, with different shapes for each binder ¿ Portland generated a higher air entry value and a narrower suction range. The differences between curves for each binder suggest a methodology to evaluate the quality of stabilization by alkaline cement. © 2024, Imprensa da Universidade de Coimbra. All rights reserved.

Language: Portuguese

Type (Professor's evaluation): Scientific

No. of pages: 15