[PDF] Top 20 Rev. IBRACON Estrut. Mater. vol.8 número1

... With this issue (Volume 8 Number 1, February 2015), we open the eighth volume of the IBRACON Structures and Materials Journal. This issue contains ive articles related to concrete structures and materials. ... See full document

... long-term behavior of the paving blocks. The amorphous structure can lead to alkali-aggregate reactivity causing expansion of the aggregate in hardened concrete structure [30]. Illite can also cause expansion and ... See full document

... Note that if the damage process in the material is not activated (D 1 = D 2 = 0) the Eq. (8) recovers the equation proposed by Comi [7], thus the formulation satisies the proposed condition of initially isotropic ... See full document

... Other data also necessary to the thermal analysis, such as total time of ire exposition, time increment, initial temperature of the structure, α coeficient for the choice of the time integration method, tolerance for ... See full document

... irst 8 hours after casting, which is a minor quantity if compared with the ...ter 8 hours of age, in the hardening state, all mixes lose water in a similar manner (Figure 4), developed similar shrinkage ... See full document

... Chapelle´s method is commonly applied by the IPT- Construction Materials Laboratory for pozzolanic reactivity determination of dif- ferent materials. Raverdy´s et al. procedure underwen[r] ... See full document

... In general, the smooth models with lower compressive strength in the illed region showed slippage 2 or 3 times greater at rupture than the relative slip at the interface of the models[r] ... See full document

... Moreover, the natural frequencies and modal shapes, which were based on the properties of the elements assigned to the structure, were obtained from the numerical model performed, via [r] ... See full document

... A Seção 4.2.4 não deixa claro se os procedimentos são váli- dos para estrutura em construção (ou nova) com problemas de conformidade ou para estruturas existentes, e omite o fato que a[r] ... See full document

... Although the example does not presents the cylinder tests results, the compressive strength values obtained from 8 cores produced much smaller results (f c, max = 19,1 MPa) than the values specifi ed in design. The ... See full document

... de um trecho da introdução e do Flowchart 1 da norma), e justii - cam o uso do critério adotado na Seção 4.2.4 tendo em vista que, nos casos de não conformidade em estruturas ainda em c[r] ... See full document

... excerpt from the introduction and Flowchart 1 of the standard), and justify the use of the criteria adopted in Section 4.2.4 with a view that in cases of non-compliance in structures u[r] ... See full document

... We are publishing the fourth issue of the eighth volume of the IBRACON Structures and Materials Journal. In this issue, the irst of eight articles presents interaction curves for concrete-encased com- posite ... See full document

... We are publishing the fourth issue of the eighth volume of the IBRACON Structures and Materials Journal. In this issue, the irst of eight articles presents interaction curves for concrete-encased com- posite ... See full document

... Weng and Yen [19] investigated the diferences between the approaches of code ACI 318 [20] and AISC/LRFD [16] for the design of composite steel–concrete columns fully encased with concrete and evaluated how their results ... See full document

... These mixtures can be used like backill material in soil retaining walls replacing the clayey soil due to its better strength and shear behavior and low unit weight.. A numerical simula[r] ... See full document

... Among the processes that reduce the durability of reinforced con- crete structures, reinforcement’s corrosion is mentioned as the ma- jor cause. The corrosion process produces the concrete cracking, cover spalling, loss ... See full document

... It was used the algorithm “Calcula_TimeHistory” to generate the corresponding functions and this way to load the nodes of the computational model in order to obtain a time series of t[r] ... See full document

... The result graphics are the vertical displacement of the composite beam, bending moment and normal forces of each of the two beams and the connector shear force. The implementation was[r] ... See full document

... The presence of displaced semicircles suggests a non- ideal be- havior of the capacitor , leading to the introduction of the constant phase element (CPE) to the equivalent circuits. SAGUES et al. [8] introduced ... See full document