[PDF] Top 20 Rev. IBRACON Estrut. Mater. vol.7 número1

... the IBRACON Structures and Materials Journal. In this issue (Volume 7 Number 1 – February 2014), seven original articles on concrete materials and struc- tures are ... See full document

... This paper presents the structural behavior of six reinforced concrete pile caps in rectangular arrangement, considering the ground deformability of pile support, different concrete str[r] ... See full document

... More complex models, which focus on the behavioral analysis of rein- forced shell elements, have also been developed (Scordelis [4], Hu [5], Cervera [6], Polak [7], Wang [8], Liu [9], Schulz [10] and Hara [11]). ... See full document

... According with experimental data reported in [6], the irst concrete has tension strength of 2.3 MPa and elasticity modulus of 32,300 MPa. The second concrete has tension strength of 2.25 MPa and elasticity modulus of ... See full document

... The continuum damage is introduced in elastic constitutive law using the effective stress concept (that oc- curs on the undamaged part with defects) and the strain equivalence hypothes[r] ... See full document

... According to Tassios [6] and Ducati [7], the behavior on the limit between the bar and the concrete is of decisive importance for the load capacity and service of reinforced concrete parts. This knowledge is ... See full document

... However, the thermal parameters used during the analysis are not the same as the ones recommended by EC 4 [6], which suggests a 0.7 emissivity for any material exposed to ire and an up[r] ... See full document

... Figure 4 shows the average compressive strength values (Rc) at 7, 28 and 90 days. It is conirmed that the mixture with 10% of replacement of Portland cement by MK and in the same w/b ratio reaches higher strength ... See full document

... O terceiro número do sétimo volume da Revista IBRACON de Estruturas e Materiais está sendo publicado, com sete artigos sobre materiais e estruturas de concreto. A avaliação de momentos de segunda ordem em ... See full document

... a) Used as plasticizer and set retarder, the admixture led to dif- iculties to grout penetration under high temperatures. Its effect was not observed for temperatures greater than 30ºC.[r] ... See full document

... The codes used in this research estimate the punching shear re- sistance of slabs with holes adjacent to the column in a similar way, differing only in the shape, length and position of[r] ... See full document

... The reinforcements’ strains were monitored using electrical strain gauges (EERs) manufactured by Excel Sensors with grid dimen- sions (3.18x3.18) mm² - model PA-06-125AA-120L, which were in- stalled on the steel bars. ... See full document

... All concrete with addition of SBA showed a reduction of at least 10% in the properties related to permeability and an increase in compressive strength of up to 20% compared to standard [r] ... See full document

... This research evaluates the behavior of slab-column connections in a reinforced concrete lat slab system and subjected to symmetrical loading, strengthened to the shear with carbon iber[r] ... See full document

... This study presents an alternative way of assessing the inal efforts of a structure, including second order effects, using both the coef - icients γ z and B 2. A range of medium-sized[r] ... See full document

... has main and secondary ribs: main ribs on the direction of the small- est span and secondary ribs follow the direction of the largest span. The distances between the rib axes differ between the two direc- tions; they are ... See full document

... The third issue of the seventh volume of the IBRACON Structures and Materials Journal is now pub- lished, with seven articles on concrete structures and materials. Evaluation of second order moments in reinforced ... See full document

... The structural behavior and the ultimate punching shear resistance of internal reinforced concrete lat slab-column connections, with one hole adjacent to the column, with or without lexural moment transfer of the slab to ... See full document

... The turbidity and concentration of iron showed a similar behavior to the apparent color, with signiicantly higher values at point 1 and a sig - niicant decrease as the water passed thro[r] ... See full document

... The post-peak behavior of concrete under compression has funda- mental importance on ductility of it, modifying the ultimate behavior of reinforced concrete beams. The fact that post-peak stress-strain rela- tions are ... See full document