Shear Strenght of Concrete with Recycled Aggregates

Title: Shear Strenght of Concrete with Recycled Aggregates
Author(s): Fonteboa
Paper category : conference
Book title: International RILEM Conference on the Use of Recycled Materials in Building and Structures
Editor(s): E. Vázquez, Ch. F. Hendriks and G.M.T. Janssen
Print-ISBN: 2-912143-52-7
e-ISBN: 2912143756
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 619 - 628
Total Pages: 10
Nb references: 7
Language: English

Abstract: The investigation was developed in three phases. In a first phase the selection of the
materials was carried out: aggregates, addition, superplasticier, and cement. The fundamental
characteristics of all of them were discussed.
In the second phase the mixes of the different concretes were designed, and mechanical
properties were compared. Two patterns of behaviour were settled down: mix CC
(conventional concrete) was designed to reach a compressive strength of 35MPa and 6-9 cm
consistency. Mix CCS added, moreover, silica fume. Mixes with recycled aggregates were
RC and RCS. RC was produced with the same w/c ratio but with 50% (in volume) of coarse
recycled aggregate (with the same goal of strength and workability). RCS was produced from
RC, adding the same percentage of silica fume as CCS.
In the third and last phase, the study of the structural behaviour of the concretes was
developed. For every concrete, four reinforced beams with different quantities of transverse
reinforcement were made and they were tested up to shear failure.
The results provided by the instrumentation allowed to verify the behaviour of the different
concretes. Results were confirmed using theoretical models (MCFT) and current codes, being
observed that those present, in general, a conservative character.

Online publication: 2004-09-29
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143756.068