Influence of the bonding of rebar dowel with adhesive on wood-concrete composite specimens

Autor(es)

Molina, Julio Cesar ^[1] ; Barros Oliveira, Carolina Aparecida ^[2] ; Christoforo, Andre Luis ^[3] ; Boas, Daniel Villas ^[1] ; Calil Junior, Carlito ^[4]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo State UNESP, Sch Timber Ind Engn, Itapeva - Brazil

^[2] Univ Sao Paulo State UNESP, Dept Mech Engn FEG, Guaratingueta - Brazil

^[3] Fed Univ Sao Carlos UFSCar, Dept Civil Engn, Sao Carlos - Brazil

^[4] Univ Sao Paulo, Dept Struct Engn EESC, Sao Carlos - Brazil

• Tipo de documento: Artigo Científico
• Fonte: PROCEEDINGS OF THE INSTITUTION OF CIVIL ENGINEERS-STRUCTURES AND BUILDINGS; v. 173, n. 12, p. 904-913, DEC 2020.
• Citações Web of Science: 1

Resumo

Ensuring the quality of the connector used in wood-concrete composite systems is a critical factor affecting the performance of the system. The main objective of this research was to study the strength and stiffness of wood-concrete composite specimens with two types of rebar dowel connectors: fixed to the wood (solid timber) using epoxy adhesive and by pre-drilling on smaller diameter holes in the wood (without the use of adhesive). In the composition of the test specimens, rebar dowels of 12.7 mm dia. were used. The strength and stiffness of the connectors were determined by double shear tests, performed on composite specimens. Statistical analysis was used to compare the results obtained and regression models were proposed for estimating the stiffness parameters of the connections. The connectors glued with epoxy adhesive provided better strength and stiffness for the composite specimens when compared to the connectors fixed to the wood by pre-drilling. The differences between the strength and stiffness of the connection systems analysed were statistically significant. The regression models proposed presented a good approximation for the estimation of the K-ser and K-u slip moduli of the composite specimens analysed. (AU)

• Processo FAPESP: 08/06726-5 - Estudo de ligações metálicas de sistemas mistos de madeira e concreto em situação de incendio
• Beneficiário: Julio Cesar Molina
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado