[PDF] Top 20 Rev. IBRACON Estrut. Mater. vol.3 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

... The authors already published studies on the mechanical charac- teristics of concretes with different types and content of recycled aggregates, comprising properties such as compressive strength [3] and elastic ... See full document

... In addition, the development of new polymeric materials, such as CFRP-Carbon Fiber Reinforced Polymer, GFRP- Glass Fiber Reinforced Polymer and AFRP-Aramid Fi- ber Reinforced Polymer has allowed a great flexibility for ... See full document

... Speciically, regarding the numerical study of the shear stress on the reinforced concrete structures, there is a number of theoretical and experimental studies on concrete beam subjected to shear [1- 3] although ... See full document

... This is due, maybe, to the structural calculation, because this build- ing is relatively slender. Out of the 14 existent columns in the build- ing, 5 of them would demand intervention type I4 for which shoring would be ... See full document

... The rivulets’ position varies almost linearly with wind velocity. Hikami and Shiraishi [3] showed that the occurrence of vibrations induced by rain and wind is limited to cables geometrically inclined against the ... See full document

... Each specimen was taken to a humid chamber (90%<UR<95%) for 27 days, having after the surface regularized for the tests. The tests were performed in an Ibertest machine. It is worth to remind that the given values ... See full document

... of the numerical analysis developed in item 4, it is noticed that for beams conined through square stirrups, the factors that inlu - ence this index are: concrete compression strength [r] ... See full document

... Nowadays lightweight concrete is used on a large scale for structural purposes and to reduce the self-weight of structures. Speciic grav- ity, compressive strength, strength/weight ratio and modulus of elasticity are ... See full document

... Environmental aggressiveness is normally the term utilized to de- scribe the potential contribution of triggering substances of the oxidation processes (oxygen and chlorides, mainly) in reinforced concrete structures. On ... See full document

... of the multimedia tool, the applet “Veriicação de seções quaisquer de concreto armado sob lexão composta oblíqua”, was used as a.. programming language called JavaTM and the development [r] ... See full document

... Además del oxígeno y de la humedad, indispensables para el ini- cio de la reacciones de oxidación de los sulfuros de hierro, otros agentes pueden causar un efecto acelerador del proceso, como es el caso de la ... See full document

... um as illustrated in Figure 10, indicated that the predominant iron sulfate in the sample is jarosite, KFe 3 (SO 4 ) 2 (OH) 6 . Likewise, we studied the effloescence found in the rock from the Torán dam quarry ... See full document

... In-situ compressive strength at about 60 days was obtained from cores drilled from different parts of the box-culverts such as the central areas of the sides (wall-A and wall-B) and slab, see Fig- ure 9. Cores drilled ... See full document

... as a punching failure surface crossing this reinforcement was intended. Figure 2 and Table 1 show the characteristics of the tested slabs. The load was applied upward to the bottom from a jack located at the centre of ... See full document

... the 3 faces of the columns and at two levels, so that the irst strain gages was placed at 1,200 mm from the superior surface of the inferior slab and the second one positioned to 2,200 mm, as shows the Figure ... See full document

... The inite element analysis encloses the computational modeling of the following phenomena: chemical, thermal, diffusion and mechanical which occur at the irst days after the concrete ca[r] ... See full document

... calculations, from the coordinates relative to each point on the image. After obtaining the corrected coordinates of all points referent to grid lines crossings, you must proceed to calculations for determi- nation of ... See full document

... The current knowledge does not clearly establish an accurate group of strength and deformation parameters and their respective weight- ing and safety factors for a Limit State analysis. It is necessary to go forward ... 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