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The objectives of the study were to investigate the role of specimen type and specimen size on the effect of silica fume on bond strength of reinforcing bars, and to evaluate the effect of bar size and concrete confinement on the anchorage characteristics of the reinforcing bars in silica fume...
A new experimental technique for imposing uniaxial or biaxial confinement on specimens subjected to dynamic load has been developed. A drop weight impact machine was used to “split” the confined specimens. Different levels of pre-stress were chosen to evaluate the change in the impact...
The behavior of mortar, ordinary concrete and high strength concrete under chemical corrosion and stress corrosion attacks is studied in the presented work. The specimens were immersed into a variety of chemical solutions, namely, 5% and 0.5% ammonium sulfate solutions, 10% and 1% ammonium...
Results from small scale models of prestressed concrete frames, tested by a shake table simulating earthquake forces are presented. The primary curves (horizontal force-displacement relationships) and the hysteretic loops are determined experimentally. Concrete strength is approximately between...
Dans cet article, il est proposé un indice d'endommagement pour des murs en maçonnerie confinée par des éléments en béton armé, sous chargement latéral cyclique. L'indice en question, basé sur la dégradation de la raideur latérale, est fonction du niveau de déformation du mur. Une...
The paper reports on data acquired during 700 days of monitoring a widened reinforced concrete underbridge. The deck was monitored before, during and after widening and both portions of the deck, existing and new, were instrumented. Concrete strains were monitored by means of embedment and...
The question of non-destructive testing of porous materials has always been of interest for the engineering profession. A number of empirically based relations between stiffness (modulus of elasticity) and strength (modulus of rupture) of materials have been established in order to control...
The experimental program reported in this paper was planned to investigate the sensitivity of lightly reinforced concrete beams to size and to steel-to-concrete bond properties. Forty-eight micro-concrete reinforced beams were tested; these were of three different sizes, reinforced with various...
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