Modulus of elasticity of concretes produced with basaltic aggregate

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Lino Maia (Author) FEUP; Aslani, F (Author) Other

Journal

Title: Computers and Concrete

Vol. 17

Pages: 129-140

ISSN: 1598-8198

Publisher: Techno Press

Indexing

ISI Web of Knowledge - 7 Citations

Scopus - 8 Citations

Other information

Authenticus ID: P-00K-9H0

DOI: 10.12989/cac.2016.17.1.129

Abstract (EN): Basalt is a type of volcanic rocks, grey to black in colour, contains less than 20% quartz, 10% feldspathoid, and at least 65% of the feldspar of its volume. Basalt is considered an igneous rock with fine grains due to the rapid cooling of lava. Basaltic rocks have been widely used as aggregate for various purposes. The study presented in this paper was carried out on basalts that are widespread in the Madeira Island of Portugal and that comprise the major source of local crushed rock aggregates. This paper discusses an experimental programme that was carried out to study the effects of basaltic aggregate on the compressive strength and modulus of elasticity of concrete. For this purpose, cylinder specimens with 150x300 mm dimensions and prism specimens with 150x150x375 mm dimensions were cast. The experimental programme was carried out with several concrete compositions belonging to strength classes C20/25, C25/30, C30/37, C40/50 and C60/75. The Eurocode 2 indicates the modulus of elasticity should be 20% higher when the aggregates are of basaltic origin, however results showed significant differences and a correction is proposed.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12