Banca de QUALIFICAÇÃO: Marcela Palhares Miranda

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : Marcela Palhares Miranda
DATA : 05/07/2017
HORA: 14:00
LOCAL: Centro Federal de Educação Tecnológica de Minas Gerais
TÍTULO:

EXPERIMENTAL EVALUATION AND ANALYSIS OF INFLUENCES OF SPECIMENS CHARACTERISTICS AND FAILURE MODE ON BOND WITH PULL-OUT TEST IN THIN STEEL BARS (CA-50)

PALAVRAS-CHAVES:

Bond, Pull-out Test, Thin steel bars, Specimens geometry.

PÁGINAS: 65
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
SUBÁREA: Estruturas
RESUMO:

The bond between steel and concrete is the property that ensures reinforced concrete structures viability, preventing steel bars slip on the inside of the concrete. The evaluation of the bond behavior is carried out through mechanical testing, being the Pull-Out Test (RILEM CEB FIP RC6 (1992)) the more commonly used to bond studies. This test primarily consists of tensile force application to a steel bar, positioned in a cubic concrete specimen. There is no Brazilian standard for this test, unlike other countries. Few studies evaluate the phenomenon considering only thin steel bars, that are highlight in construction, in a view the projects on even slender concrete elements. The specimen geometry of pull-out test is a highlight parameter search, since surveys indicate improvement tension distributions, on the specimen side with cylindrical geometry. In this way, proposed to the bond evaluation with thin steel bars CA-50 (6.3, 8 and 10 mm) and concrete C35 from pull-out test, used the anchorage length of 10ϕ, based on literature, and the compare bond tension from cubic and cylindrical specimens. Preliminary results, with 6,3 mm steel bars, suggest satisfactory numbers, with low variability and possibility of specimen test substitution , from cubic to cylindrical, according to statistical analysis.

MEMBROS DA BANCA:
Interno - CLAUDIO JOSE MARTINS
Presidente - ELIENE PIRES CARVALHO
Interno - NILTON DA SILVA MAIA