[PDF] Top 20 Rev. IBRACON Estrut. Mater. vol.4 número2

... (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

... An alternative approach called multiphase model was recently de- veloped, providing a mechanically consistent framework to analyze the behavior of structures made up of materials reinforced by lin- ear continuous ... See full document

... Due to the exhaustion of the natural aggregates quarries near the consuming centers, the increase of this raw material transport cost and the laws for environment protection that have forbidden the extraction of natural ... See full document

... Figures [11], [12], [13] and [14], show some graphs generated by the program during the Pseudo-Dynamic analysis and the results of the normal, shear and principal stresses in six joint[r] ... See full document

... Table 2 illustrates the particle size analysis of cement and ly ash, while the X-Ray luorescence can be observed in table 3. Tests were conducted at LACER (Laboratory of Ceramics) at UFRGS. Table 4 illustrates the ... See full document

... The Eurocode [2] allows the design of reinforced concrete beams in ire situation using the tabular method (tables 1 and 2), which is associated with the time required for ire resistanc[r] ... See full document

... However, most of the existing calculation methods for that con- nection emphasize the socket design and detailing without in- cluding information and recommendations that describe the in- ternal behavior and design of ... See full document

... Based on the analysis of the results of 1885 compressive strength tests and 245 lexural strength tests, this study determined the acceptance parameters of the concrete batches that wer[r] ... See full document

... The characteristic values of the material properties represent ei- ther the mean values (e.g. modulus of elasticity) or 5%, 95%, or al- ternatively a different distribution fractile of the considered random quantity ... See full document

... In Figure 4, the distance between curves relects the effect of con- crete strength class on reliability indexes. The Figure shows that, for load ratios L n /D n >0,4 reliability indexes decrease slightly as ... See full document

... deviations and coefficient of variance (c.v.) in percent- age. Figure 7 shows the bar graphics with the compres- sive strength of the concrete block (B), the compressive strength of the mortars (des- ignated here as ... See full document

... Revista IBRACON de Estruturas e Ma- teriais (Volume 4, Número 3, de agosto de 2011), com oito artigos discutindo temas relevantes rela- cionados a estruturas e materiais de ... See full document

... This technical note describes the implementation of the Levenberg-Marquardt algorithm for the inverse analysis of three-point bend tests on notched specimens of plain and fi ber reinforc[r] ... See full document

... Having this in mind, the APULOT test coniguration was estab- lished considering that a plastic mould (a PVC tube or a discarded plastic bottle) adequately adjusted could be used to cast the speci- men and would be left ... See full document

... The results presented in Table 9 and Figure 1 indicate that despite the mixtures A1-2 and A1-3 have shown low levels of incorporated air content, their compressive strength is lower th[r] ... See full document

... had been reached, making it impossible for the shear reinforce- ment were requested in order to provide an increase in the failure loads. In relation to punching reinforcements, they provide signii- cant gains for ... See full document

... Tests with FWD (Figure [2]) were performed as described in Table [2], aiming to include two distinct seasons in São Pau- lo: winter (mild) and summer. Deflection measurements were made with seven sensors (geophones), one ... See full document

... Thirty concrete specimens were cast, leading to ifteen families of concrete with two specimens each. These specimens were cut (see igure 1) from 2 different cylinders of 10 cm in diameter. A disc saw was used to cut the ... See full document

... In order to give a better understanding of the applet itself a problem from the Technical Commentaries and Examples from the Brazilian Code (IBRACON [6]) will be solved. The problem consists on ind- ing the ... See full document

... AMBT is not considered as reliable as it should by some research- ers. They argue that this type of test is too severe for some aggre- gates and is not able to detect the potential reactivity of others [4]. Even ... See full document