[PDF] Top 20 Rev. IBRACON Estrut. Mater. vol.5 número1

... (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

... to compression and the resistance was gradually decreased to the low- est temperature with the worst performance, as might be expected. On the seventh day this variation was 24.4 MPa for a tempera- ture of 15 °C and at ... See full document

... There is a huge necessity for sewage collecting and treatment sys- tems in underdevelopment countries. The concrete pipes can be con- sidered as a very competitive and sustainable alternative in relation to competitors ... 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

... values predicted by formula (93) and listed in table 1. Thus, the application of this formula results in upward errors, whose maxi- mum values are mentioned in table 6. It can be clearly observed that these errors ... See full document

... Reliability analyses, considering extreme actions, are made for two load combinations: the irst considers the 50-year extreme of the life load, combined with the annual maximum of the wind load; the second considers the ... See full document

... This test is performed by applying an axial load to the cylindri- cal specimens. The application is performed in a circular area of 50 mm diameter and two transducers with rods of 50mm are used, placed on opposite sides ... 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

... Table 5) shows that the results obtained with the approximate stiffness criterion are safer with only 4,6% of the Mtest/Mpred values below the appropriate safety range (smaller than ... See full document

... Concrete structures, especially reinforced concrete structures, are one of most used types of structures around world. When it is lo- cated in non aggressive environments, these types of structures respect, in general, ... See full document

... The tests were interrupted when the “unsafe potential” was reached in samples in the dry state. For a better view, these results are presented in Figure 5. As can be seen, the reinforcing bars in specimens ... See full document

... Another study considered important is [4], which proposed a typology of bolted connection with circular cross section CFT column. In this paper it was presented an analytical study, us- ing a reined three-dimensional ... See full document

... Firstly, the compressive strengths found at 7, 28 and 91 days will be compared for the same individual unit compositions and after the mixtures costs, as well as the modulus of elastic[r] ... See full document

... For this purpose, the behavior of short composite steel- concrete columns was studied using physical experimental tests, measuring the increase in temperature of the surface and intern[r] ... 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

... 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, ... 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

... Two columns were used as reference, one having the original dimensions of the column and the other, monolithic, had been cast along the thick- ness of the strengthened piece. The remaining columns received a 35 mm thick ... 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

... 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