Concrete contains numerous pores that allow degradation when chloride ions migrate through these paths and make contact with the steel reinforcement in a structure. Chlorides come mainly from the sea or de-icing salts. To keep the reinforcement from being exposed to chlorides, it is possible to electrokinetically force nanoparticles into the pores, blocking access. This procedure is called elec...

A safe and economic realisation of tall buildings and other slender structures calls for accurate structural analysis. Several current analysis programs allow for a materially and geometrically nonlinear analysis of reinforced concrete frames, either by frame or three-dimensional elements. For the evaluation of these programs the authors suggest a benchmark. The benchmark comprises seven testin...

Corrosion of reinforcement can affect durability and integrity of reinforced concrete structures. Repair cost for a badly corroded structure can be very costly and time consuming. In this paper, several capacitor sensors were developed to monitor corrosion potential of reinforcement in concrete. The impedance capacitive of sensors was tested in various acid and alkali solutions using Agilent 42...

Abstract Each structure is exposed to different influences during operation. As a result, there are various defects and damages of these elements that affect their safe The article presents the results experimental studies reinforced concrete beams with stretched reinforcement made without initial load application. were accepted one or five Ø5.6 mm holes. In case, damage was until beam destruct...

In order to obtain the study of bonding properties between reinforcement-concrete and give full play material properties, a lot research has been carried out on reinforcement-concrete. Existing studies contain mainly bonds, reinforcement lap, anchorage reinforcement. The bond test measures bond-slip curve two determine strength concrete. lap is used for performance length in concrete, whether b...

Borated water leakage through spent fuel pools (SFPs) at pressurized water reactors is a concern because it could cause corrosion of reinforcement steel in the concrete structure and compromise the integrity of the structure. Because corrosion rate of carbon steel in concrete in the presence of boric acid is lacking in published literature and available data are equivocal on the effect of boric...

This paper presents the experimental results of four full-scale coupling beams in which only horizontal reinforcements are placed, without diagonal reinforcements, with the aim to develop reinforcement details for coupling beams used in connecting side walls in a wall-slab structural system. Each coupling beam specimen was designed according to the deep-beam design procedure that does not use d...

In this paper the parametric study is carried out to investigate the effect of number of cells in optimal cost of the non-prismatic reinforced concrete (RC) box girder bridges. The variables are geometry of cross section, tapered length, concrete strength and reinforcement of the box girders and slabs that are obtained using ECBO metaheuristic algorithm. The design is based on AASHTO standard s...

C ommercially available fiberbased reinforcement for concrete is made of carbon, aramid, or glass filament fibers impregnated in a resin. Some aramid fiber reinforcement consists of aramid filaments without a resin matrix. For general applications, the most important feature of fiber-based reinforcement is its resistance to corrosion, which makes it ideal for reinforcing concrete exposed to hig...