[PDF] Top 20 Rev. IBRACON Estrut. Mater. vol.9 número6

... We are publishing the last number of the 2016 Volume of IBRACON Structures and Materials Journal (Volume 9 Number 6, December 2016), with eight articles on relevant topics related to concrete. In the irst ... See full document

... Como não existia, para todos os modelos avaliados, especiicação do fabricante em relação ao diâmetro mínimo de armadura para o qual os espaçadores são adequados, adotou-se o menor diâmetro permitido para estribos, 5 mm, ... See full document

... However, this type of process generates ashes that, dependingon the residue source, contain heavy metals and organic compounds in its composition, as in the case of calcined sewage sludge. An analysis performed on this ... 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

... Tests like L Box, Slump Flow and V Funnel are commonly used to assess this kind of suspension due to their easier use, although they only provide a single point result information about the fresh state characteristics of ... See full document

... Ensaios como caixa L, espalhamento e funil V, são comumente utilizados para a caracterização desse tipo de suspensão devido à praticidade das técnicas, porém somente resultam em infor- mações pontuais sobre as ... See full document

... Em análises numéricas envolvendo esse tipo de problema, é acei- tável que não haja uma correspondência exata entre os modelos numérico e físico, isso porque a obtenção dos parâmetros de[r] ... See full document

... The method of assess the performance of this requirement con- sists in a technical inspection and analysis of the product design to verify if the spacer has an integrated ixity item. If it does not have some type of ... See full document

... During the hydration stage, and concrete hardening, the structural element also exchanges heat with the environment until its internal temperature is balanced with that of the external[r] ... See full document

... The building’s ruin occurred during a heavy rain, where intense winds were registered in the city. In slender structures, the wind is one of the main actions to be considered (see Dyrbye and Hansen [8]) and there are ... See full document

... The embedded length ( l emb ), deined by NBR 9062: 2006 [8], for precast columns with rough walls, is 40 centimeters. The roughness must be equal to 1 centimeter to 10 centimeters. How- ever, by design criterion, it ... See full document

... Observa-se, por meio da Tabela [3], que a ruptura do modelo monolítico se dá por ruptu- ra à tração do concreto na biela junto ao pilar (tração diagonal) seguindo do esmagamento do con[r] ... See full document

... inal displacement was calculated in accordance with NBR 6118 [9]. A plane model was used, where the slabs were modeled as inite quadrilateral elements of thin shell (Shell-Thin: 4 knots, 6 degrees of freedom per ... See full document

... As identiied in Figure 9, the interface area between the steel ibers and the cementitious composite is not characterized by the pres- ence of voids or gaps. Figure 10 shows fractures in the sample, which were ... See full document

... Conforme identiica-se na Figura 9, a zona de interface entre a Fibra metálica e a matriz cimentícia não é caracterizada pela presença de vazios ou falhas. A Figura 10 apresenta fraturas na amostra analisada, sendo ... See full document

... A ruína do edifício ocorreu durante uma forte chuva, onde foram registrados ventos intensos na cidade. Em estruturas esbeltas, o vento é uma das principais ações a ser considerada (ver Dyrbye e Hansen [8]) e existem ... See full document

... 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 expansion reduction may also be attained by chemical addi- tions to the concrete, like lithium compounds. Qinghan et al [7] and Lumley [8] indicate that lithium compounds are efective to inhibit ASR expansion, ... See full document

... An evaluation of the concrete compressive modulus of elasticity is obtained directly from the stress-strain curve experimentally. Nor- mal techniques, such as the Brazilian standard (NBR 8522 [1]) and the American ... See full document

... each group of bars (coated with Zinc, Zinc-Nickel and uncoated), as shown in igures 8 and 9. As expected, in both tests the galvanized bars presented a lower corrosion rate than the uncoated ones. In the aging ... See full document