[PDF] Top 20 Rev. IBRACON Estrut. Mater. vol.5 número1 pt v5n1a01

... (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

... tive has led to the study of red mud for various applications, such as adsorbent for the removal of heavy metals from aqueous solu- tions [4], building materials such as bricks [5], ceramics and tiles [6], ceramic ... 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

... 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

... Results of crack openings obtained from beams VFC_PC_01 and VFC_PC_02 cannot be compared directly, due to the difference regarding the maximum and minimum loads applied to generate th[r] ... 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

... 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

... 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

... 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

... 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

... 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

... According to El-Hacha [5], FRP are well suited to prestressing applications because of their high strength-to-weight ratio that provides high prestressing forces, without increases on the self- weight of the ... See full document