[PDF] Top 20 Rev. IBRACON Estrut. Mater. vol.1 número3

... Samples of this random variable were obtained from the 32 avail- able experimental results, for each of the design code provisions, as shown in Tables 1 and 2. Histograms of these results are pre- sented in Figure ... See full document

... In order to obtain the stress-strain curve of the longitudinal re- inforcement bars and the compressive strength of the concrete, specimens of these materials were tested. Figure 1 shows an example of the ... See full document

... [04] SHEHATA, I. A. E. M., GARCIA, S. L. G., SHEHATA. L. C. D. Analysis of the Minimum Steel Consumption in Beams Subjected to Shear and Flexure Using the Truss Model. Proceedings of the Seventh East Asia-Paciic ... See full document

... of the steel longitudinal reinforcement, respectively. The other two GFRP-reinforced concrete beams (V04 and V06) were designed to have the same tensile force as specimen V01 but with a similar tensile limit strain of 10 ... See full document

... In the lack of experimental data, NBR 6118 suggests using k = 0.01µ. The tendon manufacture (Belgo [4]) speciies a value for the fric- tion coeficient µ between 0.06 and 0.07. NBR 6118 [3], on the other hand, suggests ... See full document

... more 1 locomotive and 104 wagons, representing 80% of the trains working ...Figures 1 and 2 show the longitudinal dimensions considered for these locomotives and wagons, ... See full document

... ire and the discretization of the numerical model constructed for thermal analysis purpose, are schematized. For the concrete slab, in the structural analysis, it was considered a uniform temperature variation along the ... See full document

... In modeling the structure, some simpliications are generally made, directly related to the consequences on the inal product built. Some of these simpliied hypotheses and their respective consequences have been related by ... See full document

... Silica fume is a by-product of silicon metal or ferrosilicon alloys in- dustries, derived from the production of highly pure quartz and coil in electric arc furnaces. When the raw material used to produce these materials ... See full document

... The test method to measure creep in laboratory was conducted utilizing 15 by 30cm cylindrical specimens cast with conventional concrete. This concrete had 30MPa of compressive strength at 28 days, and the mix proportion ... See full document

... The guarantee of a satisfactory bond and a monolithic strengthen- ing depends on the correct treatment of the old concrete surface and substrate cleaning and saturation before the subsequent plac- ing of the new concrete ... 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 existing cracks in the concrete matrix can be intercepted by the ibers (Figure 1) who avoid the widening of the cracks due its bond with the matrix. As result, occurred a increase in the mate- rial toughness ... 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 ... See full document

... The irst scientiic studies of seismicity in the Brazilian territory began around the year 1970, from which seismic data began be- ing collected, but these studies have not yet been completed. Initially, it had been ... See full document

... The evolution of construction techniques and of the performance of construction materials revealed the advantage of eliminating some elements by means of leaner and more economical solutions. An example of this is ... See full document

... Since the beginning of the Industrial Revolution, society has in- creasingly needed energy sources. As a result, the governments of several countries began to invest heavily in building dams, be- cause they can generate ... See full document

... Mercury intrusion porosimetry (MIP) performed on the crushed pieces of the composites of the size of up to 5 mm was used for as- sessment of the level I porosity, i.e., pores in the range from 0.6 µm to 10µm, which ... See full document

... This paper attempts to evaluate the eficiency of Branson’s inertia equivalent [1] to consider the physical nonlinearity of beams in simple form. To this end, various numerical analyses of plane frames belonging to ... See full document

... The geometry and loading data for the column is inputted into the screen shown in Figure 1. This data includes the dimensions for the rectangular section, the effective length for the column in the x and y ... See full document