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A review on fiber optic sensors for rebar corrosion monitoring in RC structures KU Leuven
Reinforcement steel corrosion is one of the major causes of premature deterioration of concrete structures in marine environments or subjected deicing salts. Steel corrosion causes economic loss and even results in structural collapse and consequently loss of human life. Various optical fiber sensors have been proposed to monitor steel rebar corrosion in concrete structures over the past two decades due to light weight, compactness, small size, ...
Acoustic emission-based damage monitoring to study fracture in cementitious mortars under fatigue loading KU Leuven
In this work, acoustic emission (AE) sensors are used to detect micro-cracking in mortar cylinders subjected to monotonic and step-wise fatigue loads, in a Brazilian splitting test setup. The difference in damage progression between monotonic and fatigue tests was analyzed by using AE monitoring. The rate of AE events in monotonic tests was initially low, but there is a sudden rise of AE events with high amplitude and energy prior to failure. On ...
Acoustic emission monitoring of the chloride-induced corrosion process in reinforced concrete KU Leuven
Sectional analysis of the cyclic behavior of steel fiber reinforced concrete KU Leuven
Steel fiber reinforced concrete (SFRC) is known for improving the tensile post-cracking fatigue behavior of concrete. This paper presents a method to obtain the cyclic tensile behavior of SFRC through sectional analysis, using a limited amount of input parameters. The analytical model is divided into two parts: a monotonic and cyclic model. The monotonic model calculates the uniaxial stress-crack width curves or constitutive laws of SFRC that ...
Bond performance of deformed steel rebars in HSC incorporating industrially produced recycled concrete aggregate KU Leuven
This paper presents an experimental study on the local bond behaviour of deformed steel rebars in high-strength concrete (HSC) incorporating high-quality recycled concrete aggregate (RCA) produced from a recycling plant in Flanders, Belgium. To examine the influence of the coarse RCA on the local bond behaviour between the rebars and concrete, a total of 5 concrete mixtures (target strength class C50/60) are prepared, in which the replacement ...