In this paper, five reinforced concrete double-corbel specimens with the same designed bearing capacity are produced according to triangular-truss method (TTM) in GB 50010-2010. Corbels different dimensions and reinforcement configurations obtained by separately varying compressive strength shear span. The differences mechanical performance load-bearing of corbels compared evaluate accuracy rat...

Punching capacity is one of the main items in design both pre-stressed and non-pre-stressed flat slabs. All international codes include provisions to prevent this type failure. Unfortunately, there no code provision for UHPC yet, hence, aim research experimentally investigate impact column dimensions punching reinforcement on post-tensioned slabs compare results with codes’ evaluate its validit...

The effect of pigments on mechanical properties coloured concrete intended for structural applications, including the bond stress-slip behaviour to embedded steel bars, is not well understood. Series mixtures containing different types and oncentrations iron oxide (red grey colour), carbon black, titanium dioxide (TiO2) are investigated in this study. Regardless colour, incorporating increased ...

An assessment of the methods codes ACI 318 and Eurocode 2 is performed to establish a minimum slenderness for reinforced concrete slabs, which simplified method controlling deflection slabs. This by comparing these with each other two further that have inspired, among others, Australian standard structures. The variables evaluated include those most influence control (span, load allowable defle...

An experimental study on the shear behavior of dune sand reinforced concrete (DSRC) deep beams was conducted to determine feasibility using (DS) in engineering. Nine DSRC were designed and thoroughly analyzed for failure modes, diagonal cracks, load–deflection curves this study. The results showed that strength ductility increased when DS replacement rate 30%, but opposite effect occurred 50%. ...

This study investigated the effect crumb rubber recycled from wasted tires on properties of structural lightweight aggregate concrete (LWAC). Two types were tested: control LWAC and rubberized (RLWAC). The consisted cement, fine (river sand), coarse (porous aggregates). For RLWAC, was replaced by at rate 10, 20, 30, 40, 50% volume. water to cement ratio for both set 0.35. experiment series dens...

Concrete, a highly heterogeneous material, exhibits clear size-dependence of its compressive strength. As the Young’s modulus is generally assumed to be proportional strength, this would, in principle, implies dependence on sample size for modulus. However, elastic directly related linear deformation, while strength results from strongly non-linear processes due progressive development damage a...

Punching shear is the most common failure mechanism of slabs that are supported directly on columns. The slab–column connection always vulnerable to critical punching shear; thus, it necessary investigate effect various parameters behavior flat slabs. This work presents an experimental study evaluate level prestressing force and layout strands in terms maximum load, deflection, stiffness, ducti...

BACKGROUND Azorella compacta is traditionally used in the form of tea (infusion), in the Andean region of South America, to treat various chronic diseases. However, the health-promoting properties of this herbal tea have not yet been extensively explored. MATERIALS AND METHODS The free radical scavenging activity of A. compacta infusion (ACI) was evaluated by the 1,1-diphenyl-2-picrylhydrazyl...

BACKGROUND Although autologous chondrocyte implantation (ACI) is a well-established therapy for the treatment of isolated cartilage defects of the knee joint, little is known about typical complications and their treatment after ACI. HYPOTHESIS Unsatisfactory outcome after ACI is associated with technique-related typical complications. STUDY DESIGN Case series; Level of evidence, 4. METHO...