Revista Brasileira de Engenharia Agrícola e Ambiental
versão On-line ISSN 1807-1929
MESQUITA, Ligia P. et al. Determination of the bamboo-concrete bond stress. Rev. bras. eng. agríc. ambient. [online]. 2006, vol.10, n.2, pp. 505-516. ISSN 1807-1929. http://dx.doi.org/10.1590/S1415-43662006000200036.
This paper presents and discusses a study about the bamboo-concrete bond stress. Based on a statistical design of experiment, the investigation was divided in two steps: the first one, where the effects of the concrete compressive strength and the dimensions of the bamboo-splint cross-section were investigated; and the second, where the effect of artificial pins studding in the bamboo splints were evaluated. In both steps, ten replicates for each factor combination were done, resulting in 159 push-out tests. Bond stress versus relative displacement curves were presented and discussed. In addition, the design bond stresses of bamboo-concrete were calculated and their values were compared with those specified by International Building Codes for smooth steel and concrete. In the first step, it was observed that only the concrete compressive strength influences the bamboo-concrete bond stress and that, this stress is only 20% inferior to the smooth steel-concrete bond stress. In the second step, it was verified that bamboo and steel pins increased the transfer stress capacity between the concrete and bamboo.
Palavras-chave : cross section dimensions; compressive concrete strength; mechanic bond.