TTE151

ABSTRACT "STUDY OF CONCRETE MADE WITH WASTE FROM CONSTRUCTION AND DEMOLITION"

Considering that concrete is the most widely used construction material in the

world and that the volumes associated with its demolition processes are

considerable, this research is proposed, with the aim of exploring the potential of

this material as a replacement for natural arid in the manufacture of concrete, thus

becoming a recyclable product within the same life cycle of the natural material,

responding to the continuous search for new tools to improve its processes and

reduce the use of resources, also achieving with the stipulated international

standards but minimizing environmental impacts.

The study consists of the comparative analysis of the resistance of hardened

concrete, through compression and bending tests, and for fresh concrete through

the Abrams test, in the mixture, a part of natural coarse arid is replaced by a

percentage of recycled arid, and it is compared with a conventional concrete

mixture, with project resistance of 34 MPa.

The percentages to replace will be 20% and 40%, for an age of 7 days (2 test

tubes) and 28 days of curing for the compression test (3 test tubes), for the flexion

test (2 test tubes) at 28 days.

The mixture was made with Melón cement, fine arid or sand and coarse natural

arid, obtained from the Áridos San Vicente quarry used by the laboratory of the

Catholic University of Temuco.

It should be noted that both the natural and recycled arid underwent the tests

necessary of density, water absorption and granulometry in order to know their

characteristics and proceed to dosage using the Faury-Josiel method.

5