[PDF] Top 20 Rev. IBRACON Estrut. Mater. vol.7 número2

... The second issue of the Volume 7 of the IBRACON Structures and Materials Journal is now released. This issue brings an article on ire design of composite ribbed slabs, a topic not covered by the Brazil- ian ... See full document

... To evaluate the thermal insulation of the slab with cementitious plate, the thickness of the concrete lange was varied from 4 to 8 cm. Having in mind that the thermal and physical properties of cement and sand mortar are ... See full document

... each frequency of excitation and according to each value of soil shear modulus are presented in Table 11. The effective velocities, resulting from the combination of the velocities for the different fre- quencies, are ... See full document

... The absence of limitations on the carrying capacity of these pave- ments, allied to the numerous available choices of shape, patterns, colors and hues to allow for countless aesthetic possibilities, en- sure their ... See full document

... From the support reactions obtained from the spatial model, for each combination under rigid and lexible base, considering the described methodology for the consideration of th[r] ... See full document

... In this expression, the constant k takes on different values according to the border condition of the loor slab, specifying k = 1 , 0 when the slab is simply supported in the secon[r] ... See full document

... To scale the beams to be tested, it was followed the procedure of Rilem (1978) [1] according to the specifications of Table 2. In the concrete, it was used the trace 1:6, by mass, the pro- portion between the binder and ... 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