[PDF] Top 20 Rev. IBRACON Estrut. Mater. vol.9 número3

... the IBRACON Structures and Materials Journal (Volume 9 Number 3) is now released with eight articles related to engineering applications of concrete structures and ... See full document

... The parameters analyzed in the tests are: surface roughness (using bosses on the bonded phase of diferent thicknesses), compressive strength with monotonic and cyclic loadings. The main[r] ... See full document

... The delayed gypsum and ettringite formation due to the presence of iron sulides and the efects on the durability of concrete has been well studied and documented over the last 50 years. Howev- er, there are not so many ... See full document

... Analyzing the resistance of corbels with horizontal stirrups when failure occurs by concrete crushing of the compressive strut, the method of ABNT NBR 9062 [1] is shown to be more accu[r] ... See full document

... Usually residual mismatch from the design proile occurs even when the design camber is applied. Stucchi [4] recommends cor- rections in camber values in the segments yet to be constructed. Oyamada [14] proposes a ... See full document

... A lined tunnel, with an elastic and viscoplastic rockmass combined with an elastic lining, is compared with the results of the GEOMEC91 code.. In the second part, it is compared the sa[r] ... See full document

... When using the ultrasonic pulse velocity (UPV) method to estimate the compressive strength of concrete mixtures, it is necessary to demonstrate that there is a relationship between compressive strength and UPV. Both ... See full document

... Among such factors, can be cited: the elevated temperatures reached by massive elements of concrete, due to the cement hydration heat Portland, as is the case of foundation pile caps,[r] ... See full document

... The efect of connection between column x slab is obtained through a model analogous to the one used in continuous beam, which is modeled half of the column above and half of the column[r] ... See full document

... In order to obtain an equation that represents the results related to the medium and maximum bond stress according to the concrete strength and the diameter of the bar, for Brazilian m[r] ... See full document

... We are now releasing the October 2016 issue of the IBRACON Structures and Materials Journal (Vol- ume 9 Number 5, October 2016). This issue brings eight articles on concrete structures and materials. ... See full document

... From the linear interval (stress x strain) the elasticity modulus and the Poisson ratio were obtained, admitting as the linear interval values from 0.5 MPa to 30% of the average failur[r] ... See full document

... However, the design codes adopt a ixed set of partial safety fac- tors that are applied to all structures present in the implementation scope of the code. This assumption makes that diferent types of structural elements ... See full document

... A tied-arch strut and tie model consistent with the peak measured loads and based on the procedure proposed by Wight & Parra- Montesinos [9], was slightly modiied in order to estimate the ef- fective strength ... See full document

... The study indicated a clear necessity to relection on the subject, since there is no concern, or even, a lack of knowledge by the interviewed professionals regarding the care and proced[r] ... See full document

... O quarto número do volume nove da Revista IBRACON de Estruturas e Materiais (Volume 9 Número 4, Agosto de 2016) está sendo publicado. O número inicia com uma análise da estabilidade global de um pórtico ... See full document

... Recycling is seen as an alternative in trying to remove from the en- vironment the waste produced daily by our society. In Brazil, about 54.38 million tons per year of municipal solid waste are produced [2]. However, a ... See full document

... Table 9 presents the theoretical results for shear resistance ac- cording to the codes ACI 318 [3], EUROCODE 2 [4] and NBR 6118 [5] and the experimental results obtained from tests of the six pre- stressed beams, ... See full document

... the safety aspect. According to Bastos [6], in addition to the transmission of vertical loads to the foundation elements, the pillars are part of the brac- ing system responsible for ensuring the overall stability of the ... See full document

... apresentada na Tabela 3, pode-se dizer que para o teor de 5% de cinza, os resultados obtidos foram inferiores à referência nas idades de 1, 28, 91 e 365 dias, variando entre 4% e 7%. P[r] ... See full document