MPGI National Multi Conference 2012
Innovative Approaches in Civil Engineering
A Special Issue of
Indian Research Transaction
Dr. Rajiv Dharaskar
Director, MPGI Integrated Campus, Nanded
Dr. Mrs Sadhana Chidrawar
Dean, School of Engineering, MPGI Integrated
Prof. K. H. Walse
IRT ISSN: 2250-0804 (Online)
Strength Assessment of RCC Beams Subjected To
Anand Kumar B.G|
Anand Kumar B.G, "Strength
Assessment of RCC Beams Subjected To Corrosion", IRT Proceeding on national conference on Innovative Approaches in Civil Engineering, 7-8
April, 2012, published by Indian research transaction, India
damage assessment of civil structural members is one of the
most important and recently emerging fields in engineering.
Deterioration of a structure may occur due to a host of
factors such as poor workmanship, improper maintenance,
atmospheric effects, accidents, natural calamities. Certain
causes like environmental effects, natural calamities can not
be controlled. Therefore, durability of concrete structures
especially those exposed to aggressive environments is of
great concern. In spite of many deterioration causes and
factors have been investigated in turn corrosion of steel
reinforcement was found to be one of the major deterioration
problems. Thus, an Engineer may need to examine the state of
reinforcement in structures for a number of reasons including
assessment for change of use or exposure, routine maintenance,
or investigating signs of distress. In turn, there is a
requirement for a method that can determine simply, accurately
and non-destructively not only whether corrosion of
reinforcement is taking place but also its intensity and the
rate of damage. The main aim of this paper is to assess and
evaluate the corrosion condition of reinforced concrete beams
by using Non-destructive test (NDT) methods such as Half-cell
potential test, Rebound hammer test, and Ultrasonic pulse
velocity test. Also another thrust of this pilot program is to
establish a correlation between Rebound hammer number, and
Ultrasonic pulse velocity variation versus concrete strength
for different degree of corrosion in turn to interpret the
effectiveness of degree of corrosion on NDT values as well as
concrete compressive strength. For that a total of six
reinforced concrete beams (150x150x1000) mm were considered.
An impressed current was applied to beams with different
degree of corrosion (5%, &10%) in order to accelerate steel
corrosion. Mean while electrochemical measurements were
carried out to obtain open circuit potential. Finally the
results show that the Linear regression analysis is the best
fit for the compressive strength prediction relationship by
using Rebound hammer and Ultrasonic pulse velocity test at
compression as well as tension side of reinforced concrete
beam with different degree of corrosion (5%, &10% ).
Corrosion, Electrochemical test,
Ultrasonic pulse velocity test, Rebound hammer test, ,
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