The fourth issue of volume nine of the IBRACON Structures and Materials Journal (Volume 9 Number 4, August 2016) is now released. The issue begins with a global stability analysis of a reinforced concrete plane frame aiming at an evaluation of the Gama Z coefficient from the Brazilian Norm NBR 6118:2014. In the second article an hourglass-shaped specimen is proposed for determining the compressive resistance of mortar and concrete. Numerical results are presented, showing that the highest stress occurs at the center of the specimen. Experimental results indicate advantages with respect to the cylindrical specimen. Another article deals with the determination of water retention curves for mortars and concrete using the filter paper method. The fourth article describes an automatic procedure for geometry definition and analysis of axisymmetric domes by the membrane theory. An example shows the differences between a spherical dome with constant thickness and a dome subjected to constant stress. The fifth article addresses the effects of electric arc furnace slag on the expansion of mortars subjected to alkali-aggregate reaction, evaluating its effectiveness as a partial replacement of cement according to NBR 15577:2008. In the next article, a digital image correlation procedure is applied for evaluating the concrete modulus of elasticity. The seventh article presents an analysis on corrosion parameters of reinforcing steel bars. Tests confirmed the better performance obtained from the coated bars. The last article presents an experimental study on the partial replacement of fine aggregates in mortar by sugarcane bagasse ash to evaluate the effects on cement hydration at early ages.
We acknowledge the dedication of authors and reviewers, responsible for the high quality of the published articles.
Publication Dates
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Publication in this collection
Aug 2016
