[PDF] Top 20 Rev. IBRACON Estrut. Mater. vol.5 número6

... Estamos publicando o número de dezembro de 2012 da Revista IBRACON de Estruturas e Materiais (Volume 5 Número 6). O primeiro artigo aborda a análise do desempenho mecânico de vigas-parede de concreto, com ... See full document

... The test samples were broken at 7 and 28 days after casting. The average of the results are shown on igures 2 to 5. Figure 2 presents the average values obtained from 3 test samples, for the concretes produced ... See full document

... Several types of studies on precast concrete connections have been done in research centers around the world. In general, studies include the development of connections which provide high rigidity and easiness of ... See full document

... Thus, the way to check if the compressive force respects this limit is different from that presented in the method based on Baumann`s criteria, because the concrete capacity now de - p[r] ... See full document

... All the standards allow also for the use of the modal response spectrum analysis. In all the analyzed standards, the required number of considered modes shall assure that at least 90% of the total mass of the structure ... See full document

... the portion of the shear force resisted by shear reinforcement. Attempts to cover this subject are found in literature [2], [3], [4], [5], [6]. Jensen et al. [2], present the test results of sixteen circu- lar ... See full document

... The Pull Off test is based on the concept that the traction force required to pull a metallic disc bonded to a surface layer of con- crete is associated with the compressive strength of the material [19]. In the test, ... See full document

... On the other hand, for the vertical section that passes through the load application point, the maximum horizontal tensile stress for the inal load value occurs on the point at 0.60 m[r] ... See full document

... During the last ive years RIEM has experienced important steps towards the recognition as a relevant International Journal in the area of concrete structures and materials. RIEM started in 2008 publishing 20 articles per ... See full document

... Detailed experimental-theoretical studies of the socket foundation carried out by Canha [4] showed that the behavior of specimens with rough interfaces is similar to that of monolithic connections. The observed ... See full document

... The use of a rebound hammer test was the irst test possibility to be considered due to its simplicity and low cost. This test is based on the evaluation of a mass rebound after being ired against a surface at a standard ... See full document

... With the aim of contributing to the structural evaluation of reinforced concrete bridges it was decided to analyze the stresses in reinforced concrete bridge sections to verify the eff[r] ... 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

... Approximately 35–40% of bauxite ore is discarded in the form of strongly alkaline RM slurry ‎[4]. This mud contains about 60 vol. % of solid content in the form of superine particles. Therefore, this mate- rial ... See full document

... Among the products generated in the processing of iron ore, mud from washing, in most cases, is stored in tailings dams without a commercial use because the technology to transform this waste in metallic iron is more ... See full document

... By the statistical analysis with multiple comparison of compressive strength results of concrete blocks, presented in Tables 3 and 4 and Figures 11 and 12, it is observed that for traits with replace- ment of 50%, 80% ... See full document

... Model 4 characteristics are equal to model 1 except for splitting steel bar addition as shown in Table 1. The objective of this reinforcement is to observe its contribution to pile caps load bearing capacity. Another ... See full document

... The speciication of performance criteria which were not determined with the use of mathematical models to predict the structure service life does not constitute a performance-based spe[r] ... See full document

... taining bagasse residual ash dating to the late 1990. Studies of Martire- na Hernández et al . [11], Singh et al. [12], Ganesan et al. [13] and Mo- rales et al . [14] show that replacing cement by ash (5 to 30% by ... See full document

... Meier [10] suggests that a prestress level as high as 50% of the CFRP strength might be necessary to increase the ultimate strength by delaying the premature failure. Experimental results presented by Deuring [11] showed ... See full document