[PDF] Top 20 Rev. IBRACON Estrut. Mater. vol.5 número5

... In order to verify the homogeneity of the concrete used, the com- pressive strength results of the specimens taken to rupture right after the modulus of elasticity tests were irst analyzed. These compressive strength ... See full document

... In this section, are presented the experimental methodology and the results obtained in the development of a cement-based com- posite with characteristics more appropriate to reconstruct the ten- sile zones of RC beams, ... See full document

... Figure 2� � Stringer�s stress theoretical variation in section S21 due to passage of the loaded operational train type on concrete (left) and reinforcement.. limit state of fatigue” of [r] ... See full document

... Table 2 summarizes comparisons between the experimental and theoretical results. It is possible to perceive that the recommenda- tions of ACI are conservative and show a high coeficient of varia- tion if compared to the ... See full document

... The heterogeneity of the composition; the speciic mass with lower density; the adhered mortar quality and the amount of adhered mortar and the variability of the properties are all important char- acteristics of recycled ... See full document

... In Brazil, CAMACHO [5] was the irst to perform studies on the compressive behaviour of block masonry. The author stat- ed that masonry is the oldest and most classical construction method used by man, while the ... 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

... The use of calculation models I and II presented in the Brazilian Standard Code ABNT NBR 6118:2007 [1] are widely discussed. Mota & Laranjeiras [4] concluded via electronic mailing list that cal- culation model I is ... 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

... 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

... (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

... 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

... icients obtained from the diagram M x N x 1/r differ from standards that use a simpliied consideration of PNL; the stiffness reduction coeficient for columns in the arrangements analyze[r] ... See full document

... The FRP strip (1) is wrapped around the wheels (2) and clamped at its ends (3) as shown in Figure [2] (b). The strip can be prestressed by ro- tating one or both wheels (4a) or displace the wheels (4b). As one can see in ... 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

... 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

... 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

... The column-foundation connection through socket consists of em- bedding part of the precast column into the cavity of the foundation element. This connection is widely used in precast concrete struc- tures all over the ... 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

... The independent variables were chosen based on the correlation of each with the dependent variable and based on existing literature on dam be- havior prediction models. The variables selected for the prediction mod- els ... See full document