Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Poisson behaviour of bedding mortar under multiaxial stress state
The main goal of this work is to understand the tri-axial compression capacity of joint mortar through the Poisson behaviour. The conclusions drawn from the present study are the following: the behaviour of stress-strain diagram is strongly non-linear and depends on the increase of lateral stress. In all studies present here, the ultimate strength envelope can be represented by a linear function in the p-q plane and the angular coefficient is quite similar. The initial elasticity modulus of confined mortar decreases with the increase in the confining stress for mortar type 1:1:6 in studies of KHOO [1] and MOHAMAD [3], in opposition with the results from ATKINSON and NOLAND [2]. All authors observed a significant reduction in Poisson ratio of mortar when the confined stress increases. Apparently this decrease shows to be exponential for mortars types 1:1:6 and 1:2:9 and linear for mortars type 1:1/4:3 and 1:1/2:4.5. A simple model is proposed to represent the modification of Poisson ratio throughout the normalized stress range.
Poisson behaviour of bedding mortar under multiaxial stress state
The main goal of this work is to understand the tri-axial compression capacity of joint mortar through the Poisson behaviour. The conclusions drawn from the present study are the following: the behaviour of stress-strain diagram is strongly non-linear and depends on the increase of lateral stress. In all studies present here, the ultimate strength envelope can be represented by a linear function in the p-q plane and the angular coefficient is quite similar. The initial elasticity modulus of confined mortar decreases with the increase in the confining stress for mortar type 1:1:6 in studies of KHOO [1] and MOHAMAD [3], in opposition with the results from ATKINSON and NOLAND [2]. All authors observed a significant reduction in Poisson ratio of mortar when the confined stress increases. Apparently this decrease shows to be exponential for mortars types 1:1:6 and 1:2:9 and linear for mortars type 1:1/4:3 and 1:1/2:4.5. A simple model is proposed to represent the modification of Poisson ratio throughout the normalized stress range.
Poisson behaviour of bedding mortar under multiaxial stress state
Mohamad, Gihad (Autor:in) / Lourenço, Paulo B. (Autor:in) / Roman, Humberto R. (Autor:in)
01.01.2006
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
DDC:
690
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