[PDF] Top 20 Rev. IBRACON Estrut. Mater. vol.10 número5

... the IBRACON Structures and Materials Journal (Volume 10, Num- ber 5, October 2017), with ten articles approaching relevant topics on concrete structures and ... See full document

... Contudo, em geral, é bastante difícil de encontrar uma lei cons- titutiva que reproduza o comportamento do concreto em função de um tipo qualquer de solicitação devido à sua complexidade de comportamento, por se tratar ... See full document

... In Brazil was created a method, which despite being called equivalent time method is not the original equivalent time method but a consensual procedure enshrined in standards [r] ... See full document

... Tendo em vista que na versão inal do EC1 (2002) a inluência da altura havia sido retirada do método do tempo equivalente e que as tabelas recomendadas nas IT8 (2001 e 2004) apresentav[r] ... See full document

... The Brazilian Standards don’t propose a superior limit for γ z to ensure the global stability of the structure. Vasconcelos and Fran- ça [10] states that for values greater 1,30 the structure is exces- sively ... See full document

... Kimura [3] airma que quanto maiores os efeitos de 2ª ordem, menos estável será a estrutura e por isso a estabilidade de um edifício pode ser avaliada por meio de um cálculo ou estimativa desses efeitos. Como forma de ... See full document

... In order to evaluate the application of the proposed formulation in quasi-brittle materials as concrete, some numerical simulations based on mechanical behavior of the microstructure of the con- crete are performed. ... See full document

... Figure 6 shows the load versus steel strains curve for specimen 01A, where negative values indicate tensile strains. During the uncracked stage, a linearly proportional increase of the tensile strains occurs in the ... See full document

... sões de (5x10) cm, rompidos aos 7 dias de idade. Os ensaios de compressão nos CPs normalizados com dimensões de (5x10) cm têm o intuito de validar o material, o procedimento de dosagem e preparação das amostras, adotados ... See full document

... The concrete mixture needs to be systematically implemented in order of to avoid low durability or emergence of problematic issues after concreting. The general criteria for be considered in the mix design are: i) which ... See full document

... The bond between steel and concrete is a determinant factor for the good behavior of reinforced concrete structural. The FIB (2000) [8] stresses that the knowledge of the behavior of the bond is es- sential for the ... See full document

... g z are illustrated in Figure 10 and Figure 11, respectively. Figure 12 depicts the search for lowest stiffness ( k ) of the beam-to-column connection, which satisies the design constraints. Note that to satisfy ... See full document

... No caso, considerando-se que a dispersão estava pa- dronizada em todos estes concretos a partir do uso de teor óti- mo de dispersante (sendo que, em teores absolutos, o concreto de refe[r] ... See full document

... For the measurement of the surface area, Blaine’s diffused method was not performed because this technique does not yield precise results for the characterization of very ine particles with dimensions smaller than ... See full document

... Portland cement with high initial strength (CP V – ARI), whose chemical and physical properties analyses are presented in Tables 1 and 2, respectively, according to the standard NBR 5733 [10], was used. This ... See full document

... relationships it can be noticed that for certain compression val- ues (-0.1 ≥ η ≥- 0.5), as long as the concrete is suficiently con- ined, the strength drop is not abrupt. This can be valuable infor- mation when ... See full document

... Desta forma, o objetivo deste trabalho é avaliar o potencial das RNAs para interpretação de dados com vistas a apresentar a mo- delagem de uma RNA capaz de realizar uma aproximação não[r] ... See full document

... Esse fato não é exclusivo do nosso país, tanto que na última década houve um grande desenvolvimento dos sistemas de pesagem em movimento em pontes (bridge weigh-in-motion, B-WIM), espec[r] ... See full document

... When EC2 is compared to NBR 6118:2007, there is a big diference in results obtained by the two codes, and it is noticed that the European code is more economical. The European code is [r] ... See full document

... According to Obrien, Quilligan and Karoumi [31], although the IL can be easily obtained from the theoretical or numerical analysis of the struc- ture, the results usually do not meet th[r] ... See full document