Fatigue Cyclic Tests on Artificially Cemented Soil

• Type: Article in International Scientific Journal
• Date: 2013

Authors

A. Viana da Fonseca (Author) FEUP; S. Rios (Author) FEUP; M. F. Amaral (Author) Other; F. Panico (Author) Other

Journal

Title: Geotechnical Testing Journal

Vol. 36 No. 2

Pages: 227-235

ISSN: 0149-6115

Publisher: American Society for Testing and Materials

Indexing

ISI Web of Knowledge - 4 Citations

ISI Web of Science

Scopus - 18 Citations

Scientific classification

FOS: Engineering and technology > Environmental engineering

CORDIS: Technological sciences > Engineering > Civil engineering > Geotechnics

Other information

Authenticus ID: P-005-2T9

DOI: 10.1520/gtj20120113

Abstract (EN): Artificially cemented soils are frequently used in the infrastructural layers of road or railway platforms but the durability of these structures is often questioned when subjected to cyclic loads. In order to evaluate the fatigue behavior, this paper presents long cyclic triaxial tests over several soil cement mixtures using a very well graded silty sand and Portland cement In undrained cemented tests, pore pressure decreased as a sign of plastic degradation, resulting that the effective stresses rose during the tests. For that reason, the resilient moduli were normalized to the effective stress, revealing a clear drop on the normalized resilient modulus at a number of cycles depending on the porosity/cement ratio. Notwithstanding, drained and undrained tests presented in this paper performed in uncemented and cemented specimens showed a distinct behavior from granular materials (where the shakedown theory applies) revealing a continuous increase in the accumulated permanent deformations, indicating that long term cyclic triaxial tests, with large number of cycles, may be decisive for a reliable characterization of cyclic triaxial test for bound mixtures.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9