Banca de DEFESA: Ricardo Dias Campos Filho

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : Ricardo Dias Campos Filho
DATA : 23/08/2017
HORA: 14:00
LOCAL: VERIFICAÇÃO DA ADERÊNCIA ENTRE AÇO E CONCRETOS COM A UTILIZAÇÃO DE AGREGADO GRAÚDO RECICLADO
TÍTULO:

VERIFICATION OF THE BOND STRESS BETWEEN STEEL AND CONCRETE WITH THE USE OF RECYCLED AGGREGATE

PALAVRAS-CHAVES:

Bond stress; Recycled Aggregate; Construction and demolition waste (CDW)

PÁGINAS: 140
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
SUBÁREA: Estruturas
RESUMO:

The adhesion between steel and concrete is the property that guarantees the effectiveness of reinforced concrete. ABNT-NBR 15116/2004 does not allow concrete produced for structural purposes to have recycled aggregates. But many countries already use this technology. Therefore, the main objective of this work is to study the behavior of concrete steel adhesion in concretes produced with recycled aggregate having a compressive strength greater than 25 MPa. For this, the recycled aggregate was characterized, also tests were carried out to characterize the mechanical properties of the concrete: resistance to uniaxial compression, according to ABNT-NBR 5739/2007, static modulus of elasticity, according to ABNT-NBR 8522 / 2008, tensile strength by diametrical compression, according to ABNT-NBR 7222/1994. In order to evaluate the adhesion stress, direct pullout tests were performed, as described in RILEM-CEB RC6 / 1983 and confined rod tests, according to ABNT-NBR 7477/1982. Test specimens were prepared using standard bulk aggregate, with 25% replacement of the standard heavy aggregate by recycling, 50% replacement of the bulk aggregate with recycled and with 100% recycled aggregate. The results for the confined rod tests did not meet the standard, presenting a smaller number of cracks than established. The results obtained in the pullout tests were satisfactory and presented variations consistent with that presented in the literature.

MEMBROS DA BANCA:
Interno - CONRADO DE SOUZA RODRIGUES
Interno - FLAVIA SPITALE JACQUES POGGIALI
Presidente - NILTON DA SILVA MAIA
Externo à Instituição - WHITE JOSE DOS SANTOS - UFMG