[PDF] Top 20 Rev. IBRACON Estrut. Mater. vol.2 número2

... Having discarded the possibility that these incoherencies could have occurred due to inadequate procedures during the tests, a decision was made to seek a limit value for the selection of valid L e values that would be ... See full document

... The MCFT is an analytical model to represent the behavior of two-di- mensional reinforced concrete structures discretized by membrane ele- ments subjected to normal and shear stresses, as shown in Figure 2. This ... See full document

... The sample “ine” develops in the temperature range 1150 - 1450°C in accordance to the phase relations in the CAS system. The free- lime calculation as shown in igure 2 leads at 1150°C to a compo- sition CAS ... See full document

... Eurocode 2 [10]. It was observed, in general, equation proposed by Eurocode 2 [10] is reasonably well approximated the experimental values of tension specimens made of plain ... See full document

... A typical load versus midspan delection relationship is shown in ig- ure 4 for two different specimens: Series A prototype 2 and Series B prototype 4. The analysis of these results indicates that both slabs have ... See full document

... (Editor, UFRGS, Porto Alegre, RS, Brazil) • José Luiz Antunes de Oliveira e Sousa (Editor, UNICAMP, Campinas, SP, Brazil) • Luiz Carlos Pinto da Silva Filho (Editor, UFRGS, Porto[r] ... See full document

... The values obtained for the static modulus of elasticity of LWAC were on average one third of the values obtained for NWC, indi- cating the greater capacity of LWAC to absorb [r] ... See full document

... diagrams, the irst with the average strain used in the calculation of the force in the columns observing the limit strains for com- pression (2 ‰) and lexural-compression (3.5 ‰) and the second the relation among ... See full document

... Figure 2 illustrates, from the moment-rotation curve of a reinforced concrete section, the main input parameters of the constitutive mod- el at hand. In a design situation, these parameters can be obtained from ... See full document

... taken into account in the evaluation of the load carrying capacity. This assumption not always yields to a safe design condition, as for instance in the case of lightly reinforced concrete beams, where the tensile ... See full document

... The structural behavior of pile caps can be deined through the strut and tie models due to the discontinuous areas, where the Ber- noulli hypotheses are not valid. In the strut and tie model the com- pression ... See full document

... design tables for slabs presented the most conservative value (about 67% higher than the load used to design the slab). This behavior occurs because the tables often give maximum values for design bending mo- ments and ... See full document

... termined by the proposed method NM 45/00 – Aggregates – De- termination of bulk density and empty voids. For each aggregate, the bulk density was determined twice using two samples. The ob- jective of the bulk density ... See full document

... submitted to combinations of vertical and horizontal loads up to failure. Jabarov et al. [3] tested similar masonry walls but with 2 rectangu- lar openings each. Previously damaged walls were coated with 25 mm ... See full document

... Environmental aggressiveness is normally the term utilized to de- scribe the potential contribution of triggering substances of the oxidation processes (oxygen and chlorides, mainly) in reinforced concrete structures. On ... See full document

... User can choose the resistance of concrete typing the value in the TextField located in the JPanel “Materais”, noting that this value should be between 15 MPa and 50 MPa. If the value entered is outside those limits, the ... See full document

... Sudret [3] explains that to any point of a volume W of reinforced material are associated geometrically coincident particles: one par- ticle of the matrix phase and N particles of the reinforcement phase. These N + 1 ... See full document

... Bearing in mind the importance of studying dams and the analy - sis and computing methods of the stresses previously presented, the aim now is to comment on the Safebarr program developed in MATLAB™. This program allows ... See full document

... and 2), which is associated with the time required for ire resistance (TRRF), the smallest dimension of the beam (b min ) and the distance between the centroid of the reinforced steel and the face exposed to ire ... See full document

... Table 2 illustrates the particle size analysis of cement and ly ash, while the X-Ray luorescence can be observed in table 3. Tests were conducted at LACER (Laboratory of Ceramics) at UFRGS. Table 4 illustrates the ... See full document