[PDF] Top 20 Rev. IBRACON Estrut. Mater. vol.1 número1

... of the numerical analysis developed in item 4, it is noticed that for beams conined through square stirrups, the factors that inlu - ence this index are: concrete compression strength [r] ... See full document

... measurement records of over 400 months. These structures suf- fer from internal concrete expansion problems due to alteration of iron sulides in the aggregate used for the concrete mix. Similarly to the Torán dam, both ... See full document

... Para cuantiicar y veriicar la presencia de otros compuestos en la muestra de roca, se ha procedido al análisis químico de la roca mediante el ensayo de FRX, cuyos resultados se presentan en la Tabla 1. Además de ... See full document

... This main objective of this research is to evaluate the variability of the mechanical properties (compressive strength, modulus of elasticity and tensile strength) and bond strength of [r] ... See full document

... Immediately after the irst reading (1 day after molding), specimens were put again in water saturated with lime, where they remain for additional 27 days. Readings at 7, 14, and 28 days after molding, using the ... See full document

... This is due, maybe, to the structural calculation, because this build- ing is relatively slender. Out of the 14 existent columns in the build- ing, 5 of them would demand intervention type I4 for which shoring would be ... See full document

... Speciically, regarding the numerical study of the shear stress on the reinforced concrete structures, there is a number of theoretical and experimental studies on concrete beam subjected to shear [1- 3] although ... See full document

... The midspan displacements were evaluated using a LVDT; defor- mations in concrete, reinforcement steel bars and CFRP compos- ites were evaluated using electric strain-gages (KYOWA KFG-5- 120-C1-11). The beams RTC1 and ... See full document

... The cement dies, such as Portland cement concrete, are brittle, with low tensile strength and low tensile strain capacity. The introduction of steel fiber in the common concrete promotes two important effects: first, it ... See full document

... (Editor, UFRGS, Porto Alegre, RS, Brazil) • José Luiz Antunes de Oliveira e Sousa (Editor, UNICAMP, Campinas, SP, Brazil) • Luiz Carlos Pinto da Silva Filho (Editor, UFRGS, Porto[r] ... See full document

... Correlations between the compressive strength of blocks and samples found in the researches described above are summarized in Table 1. As steel platen restraint and unit geometry cause signiicant effects on test ... See full document

... The representative numerical curve of the beams behavior of group B presented satisfactory conformity with the experimental, especially with the VR1-1 beam. It is observed that after the con- crete cracking the ... See full document

... The agreement between the numerical and experimental results, for the time at which the crack occurs and the increase of the crack width, is excellent. The numerical analysis shows why ring 2, with higher strength, ... See full document

... Resistance to chloride penetration was assessed following ASTM C1202 [17] and the NORDTEST method [18]. This last method has recently been adopted in Portugal as the standard method for resis- tance to chloride ... See full document

... Radial cracks were the irst ones to be visually noted, for a load between 45 kN and 55 kN. The irst radial crack appeared with 19% of the failure load for the L1-A, with around 14% of the failure load for the slabs with ... See full document

... (Editor, UFRGS, Porto Alegre, RS, Brazil) • José Luiz Antunes de Oliveira e Sousa (Editor, UNICAMP, Campinas, SP, Brazil) • Luiz Carlos Pinto da Silva Filho (Editor, UFRGS, Porto[r] ... See full document

... Neste artigo apresenta-se a avaliação do desempenho térmico de uma tipologia habitacional térrea (TI24A) executada pela CDHU - Companhia de De- senvolvimento Habitacional e Urbano do Estado de São Paulo, utilizando o ... See full document

... Today, the spans most commonly requested fall within the range of 3m to 6m (50% of the total), but there is a trend for the sale of joists for larger spans (30% between 6m and 9m), as shown in Graph 1. All the ... See full document

... For isotropic models the damage affects neither the direction nor the initial number of symmetry planes presented by the material. Thus, it does not matter if the medium is initially isotropic or aniso- tropic with some ... See full document

... There were also regions of post-peak instability in the crushing test response, similar to those observed by Figueiredo [7] when low amounts of iber were used. This instability is provoked by the pro- cess of slipping ... See full document