In most structural failures, deterioration of reinforced concrete structure is due to corrosion reinforcing bars. Ingress chloride ions and reaction carbon dioxide with the cement paste poor-quality or inadequate cover are main causes corrosion. Corrosion can be reduced by using high-quality providing proper reinforcement. addition, inhibitors used protect reinforcement in order extend service ...

This paper aims to numerically investigate the structural behavior of reinforced high-strength concrete (HSC) beams retrofitted by Carbon Fiber Reinforced Polymer (CFRP) sheets after cracking. Six pre-cracked HSC with CFRP having identical reinforcement are tested four-point loading until failure using Abaqus software, besides two others without as control beams. attached on three beam sides in...

In order to check and eliminate the cracked eggs quickly and exactly in the process of egg products, a nondestructive testing system for eggshells based on digital signal processor (DSP) was established. The system utilized a TMS320VC33 DSP as a hardware platform, and has many functions such as controlling knock-equipment, sampling and processing the acoustics signals, judging the cracked-shell...

In this article, an implementation of the so-called "novelty detection" method to monitor damage in structures is proposed. Whereas conventional damage identiication procedures have the limitation of requiring a suuciently precise mathematical model of the structure , the novelty detection approach requires no "a priori" model, making the method more applicable to systems of arbitrary complexit...

Efficient fracturing is the key issue for exploitation of geothermal energy in a Hot Dry Rock reservoir. By using laser irradiation cracking method, this study investigates changes uniaxial compressive strength, ultrasonic characteristics and crack distributions granite specimens by applying beam under various conditions, including different powers, diameters moving speeds beam. The results ind...

Cracked and un-cracked Brazilian disc specimens subjected to diametral compression were used for conducting fracture toughness and tensile strength experiments on a polymer concrete (PC) material. The value of mode I fracture toughness (KIc) was determined from the center- cracked Brazilian disc and the indirect tensile strength (σt) was obtained from the un-cracked Brazilian disc specimen. The...