[PDF] Top 20 Rev. IBRACON Estrut. Mater. vol.6 número5

... This paper presents comparisons between experimental results of 36 tests in internal slab-column connections with double- headed shear studs, which are largely used in North America, [r] ... See full document

... Some studies show the development of strut and tie models which are used in designing monolithic connection pile caps. DELAL- IBERA & GIONGO [3] present a study on the inluence of column cross section on the strut ... See full document

... According to [4], the causes of cracking in the masonry inill walls of tall buildings include the incompatibility of structural deformations compared with the capacity of accommodating deformations and the strength of ... See full document

... Although not belonging to this work purpose, a mention de- serves to be done to a computer aid method, based on the mo- ment ampliication factor γ z . Presented in 1991 by Franco and Vasconcelos [6], it also ... See full document

... The following materials comprising the concrete dosage were characterized: Portland cement CP II F 32 (Table [3]), basaltic gravel (Table [4]), natural sand (Table [5]) and polycarboxylate - superplasticizer (Table ... See full document

... Still, advancement in all three dimensions of the sustainability tri- pod is not equally balanced. Literature reviewed by Reap et al. [15] and Heijungs et al. [16] has pointed out many unsolved dificulties regarding ... See full document

... The number 5 of the sixth volume of the IBRACON Structures and Materials Journal (October 2013) is now released. Seven articles on relevant topics related to concrete materials and structures are published. The ... See full document

... For each rupture age three cylindrical specimens (10 x 20 cm) were molded, according to ABNT NBR 5738:2003 [6]. They were com- pacted using a vibrating table completed in two concrete layers of 10s duration per ... See full document

... Many works have been proposing the automation of the identii- cation and valuation of the increase rate of cracks on masonry. Some works have utilized video images, applying color contrast techniques between concrete and ... See full document

... Previously works using photogrammetry and image processing in structural monitoring have shown that the precision obtained in the displacement ield is typically better than 0.050 mm. Thus, in order to measure a uniform ... See full document

... Prassianakis & Prassianakis [4] evaluated the ability of non-destruc- tive testing to determine the integrity of concrete specimens, and they concluded that this methodology is feasible for blocks evaluation. Hamid ... See full document

... From the perspective of rheological behavior, it is assumed that mortar adhesives are concentrated suspensions of solid particles immersed in a viscous liquid which has the function of ensuring the cohesion of the system ... See full document

... The April 2013 issue of the IBRACON Structures and Materials Journal (Volume 6 Number 2) is now released. In this issue, the irst article discusses cathodic protection methods for both preventing premature ... See full document

... Test data was compared to results obtained from the matrix analysis program Sistema Computacional TQS v11.0 and from the inite element model program SAP2000 v14.2.2.. Slab behavior was [r] ... See full document

... Finally, the utilization of numerical models to represent the bond behavior in a beam test, using ordinary concrete (OC) and self- compacting concrete (SCC), presented a good approach, [r] ... See full document

... The inite element model used for numerical simulations has shown to be a valuable tool to analyze this type of problem. Its eficiency was demonstrated when the results were compared with the ex- perimental values ... See full document

... As can be seen in Figure 6, the cathodic protection current ap- plied on the steel reinforcement may cause other chemical modi- ication in the concrete. Negative ions (hydroxides, chlorides, carbonates and ... See full document

... In assessing the consistency of ready mix concrete over the ive sampling points during discharge from mixer truck can observe a linear reduction of the slump from the starting [r] ... See full document

... We are now releasing the June 2013 issue of IBRACON Structures and Materials Journal (Volume 6, Number 3). This issue contains eight articles on remarkable topics of concrete materials and struc- tures. The ... See full document

... Figure 6, the values for the compliance function for 365 days from specimens loaded at 14 days was 99me/MPa and 78 me/MPa regarding specimens kept inside and outside the cham- ber, respectively ... See full document