Papers by Ganesan senthil kumaran
Strengthening of existing reinforced columns in old structures is becoming a major issue during r... more Strengthening of existing reinforced columns in old structures is becoming a major issue during repair and maintenance. Reinforced columns in a structure get distressed due to various reasons like aging, deterioration of materials, corrosion of steel and abnormal loading conditions like earthquake, fire, higher wind loads, shock loads and blasts, etc. Retrofitting of existing buildings to meet safety requirements in seismic areas where older constructions were not designed for earthquake actions. Other typical application of strengthening techniques can be found where the bearing capacity has to be increased because of the change in the use of structure, retrofitting reduces further destruction of historical structures, industrial structures, urban transport structures, marine structures and earth retaining structures. There are different methods for strengthening of existing structures. Jacketing is one of the most popular method for columns. Steel jacket, reinforced concrete jacke...
Carbon, 2010
... found to be 0.02 h −1 and 34.6 h. The reactivity data on this carbon was compared with that o... more ... found to be 0.02 h −1 and 34.6 h. The reactivity data on this carbon was compared with that of modified whetlerites such as ASC-M-NACO/C, ASC-M-KCO/C, ASC-M-CCO/C, ASC-M-AHM/ C, ASC-M-CAN/C carbons and values of rate constant and half life are enlisted in Table 2 ...
Strengthening of existing reinforced columns in old structures is becoming a major issue
during r... more Strengthening of existing reinforced columns in old structures is becoming a major issue
during repair and maintenance. Reinforced columns in a structure get distressed due to various
reasons like aging, deterioration of materials, corrosion of steel and abnormal loading conditions like
earthquake, fire, higher wind loads, shock loads and blasts, etc. Retrofitting of existing buildings to
meet safety requirements in seismic areas where older constructions were not designed for
earthquake actions. Other typical application of strengthening techniques can be found where the
bearing capacity has to be increased because of the change in the use of structure, retrofitting reduces
further destruction of historical structures, industrial structures, urban transport structures, marine
structures and earth retaining structures.
There are different methods for strengthening of existing structures. Jacketing is one of the
most popular method for columns. Steel jacket, reinforced concrete jacket, fiber reinforced polymer
composite jacket, etc are most common examples of jacketing. Strengthening of concrete member
with externally applied steel and Ferro cement is an accepted option for repair and rehabilitation of
structures, which will improve the load carrying capacity together with ductile characteristics,
required in the case of seismic retrofit.
In this study, two methods of retrofitting of short reinforced concrete square columns were
attempted. Wire mesh mortar jacketing (WMM) and Steel Cage Mortar jacketing (SCM) were given
to the reinforced concrete column. For analysis of test results, a plain reinforced column (CS) was
tested. A total of 9 column specimens were tested after 28 days and results were analysed.
The design and the testing was done as per the Indian Standard. Results were analysed for
SCM and WMM. Theoretical capacities of columns were calculated and compared. The stiffness
variation for various columns are presented. The energy absorption was obtained from load versus
axial shortening graphs.From the result analysis, it was observed that when compared to control specimen CS, WMM
was 1.75 times greater, SCM was 2.28 times greater. The stiffness of WMM was the highest value
initially, 1.2 times higher that CS. The energy absorption was 5.01 times higher for WMM than CS.
Finally, from the strength consideration SCM is preferred. From the stiffness and energy
absorption consideration WMM is preferred.
Keywords: Concrete-Restoration-Steel Jacket.
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Papers by Ganesan senthil kumaran
during repair and maintenance. Reinforced columns in a structure get distressed due to various
reasons like aging, deterioration of materials, corrosion of steel and abnormal loading conditions like
earthquake, fire, higher wind loads, shock loads and blasts, etc. Retrofitting of existing buildings to
meet safety requirements in seismic areas where older constructions were not designed for
earthquake actions. Other typical application of strengthening techniques can be found where the
bearing capacity has to be increased because of the change in the use of structure, retrofitting reduces
further destruction of historical structures, industrial structures, urban transport structures, marine
structures and earth retaining structures.
There are different methods for strengthening of existing structures. Jacketing is one of the
most popular method for columns. Steel jacket, reinforced concrete jacket, fiber reinforced polymer
composite jacket, etc are most common examples of jacketing. Strengthening of concrete member
with externally applied steel and Ferro cement is an accepted option for repair and rehabilitation of
structures, which will improve the load carrying capacity together with ductile characteristics,
required in the case of seismic retrofit.
In this study, two methods of retrofitting of short reinforced concrete square columns were
attempted. Wire mesh mortar jacketing (WMM) and Steel Cage Mortar jacketing (SCM) were given
to the reinforced concrete column. For analysis of test results, a plain reinforced column (CS) was
tested. A total of 9 column specimens were tested after 28 days and results were analysed.
The design and the testing was done as per the Indian Standard. Results were analysed for
SCM and WMM. Theoretical capacities of columns were calculated and compared. The stiffness
variation for various columns are presented. The energy absorption was obtained from load versus
axial shortening graphs.From the result analysis, it was observed that when compared to control specimen CS, WMM
was 1.75 times greater, SCM was 2.28 times greater. The stiffness of WMM was the highest value
initially, 1.2 times higher that CS. The energy absorption was 5.01 times higher for WMM than CS.
Finally, from the strength consideration SCM is preferred. From the stiffness and energy
absorption consideration WMM is preferred.
Keywords: Concrete-Restoration-Steel Jacket.
during repair and maintenance. Reinforced columns in a structure get distressed due to various
reasons like aging, deterioration of materials, corrosion of steel and abnormal loading conditions like
earthquake, fire, higher wind loads, shock loads and blasts, etc. Retrofitting of existing buildings to
meet safety requirements in seismic areas where older constructions were not designed for
earthquake actions. Other typical application of strengthening techniques can be found where the
bearing capacity has to be increased because of the change in the use of structure, retrofitting reduces
further destruction of historical structures, industrial structures, urban transport structures, marine
structures and earth retaining structures.
There are different methods for strengthening of existing structures. Jacketing is one of the
most popular method for columns. Steel jacket, reinforced concrete jacket, fiber reinforced polymer
composite jacket, etc are most common examples of jacketing. Strengthening of concrete member
with externally applied steel and Ferro cement is an accepted option for repair and rehabilitation of
structures, which will improve the load carrying capacity together with ductile characteristics,
required in the case of seismic retrofit.
In this study, two methods of retrofitting of short reinforced concrete square columns were
attempted. Wire mesh mortar jacketing (WMM) and Steel Cage Mortar jacketing (SCM) were given
to the reinforced concrete column. For analysis of test results, a plain reinforced column (CS) was
tested. A total of 9 column specimens were tested after 28 days and results were analysed.
The design and the testing was done as per the Indian Standard. Results were analysed for
SCM and WMM. Theoretical capacities of columns were calculated and compared. The stiffness
variation for various columns are presented. The energy absorption was obtained from load versus
axial shortening graphs.From the result analysis, it was observed that when compared to control specimen CS, WMM
was 1.75 times greater, SCM was 2.28 times greater. The stiffness of WMM was the highest value
initially, 1.2 times higher that CS. The energy absorption was 5.01 times higher for WMM than CS.
Finally, from the strength consideration SCM is preferred. From the stiffness and energy
absorption consideration WMM is preferred.
Keywords: Concrete-Restoration-Steel Jacket.