Influence of discrete fibre reinforcement on the uniaxial compression response and seismic wave velocity of a cement-stabilised sandy-clay

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Cristelo, N (Author) Other; Cunha, VMCF (Author) Other; Dias, M (Author) Other; António Topa Gomes (Author) FEUP; Miranda, T (Author) Other; Araujo, N (Author) Other

Journal

Title: Geotextiles and Geomembranes

Vol. 43

Pages: 1-13

ISSN: 0266-1144

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 24 Citations

Scopus - 45 Citations

Other information

Authenticus ID: P-009-ZXR

DOI: 10.1016/j.geotexmem.2014.11.007

Abstract (EN): A sandy clay from the northeast region of Portugal has been reinforced with polypropylene fibres and cement, and seismic wave velocity measurements and uniaxial compression strength tests were performed. Results showed that the fibre induce variations on the wave's velocity that cannot be related to real changes in the material stiffness. Therefore, care should be used when using this technique in fibre reinforced soils. The addition of fibres resulted in an increase of compression strength of the mixtures, for every cement content. Regarding the stiffness, the fibres proved to be increasingly effective with an increase in cementation, especially at the early stages of the stress strain curve, when the secant deformability modulus increases with fibre content. However, no influence of the discrete reinforcement was detected on the peak and post-peak stages of the loading process. Fibre length showed also to be influential on strength and stiffness.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13