Sg S Institute Of Technology And Science

Indore, India

Sg S Institute Of Technology And Science

Indore, India
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Melani A.,Sg S Institute Of Technology And Science | Khare R.K.,Sg S Institute Of Technology And Science | Dhakal R.P.,University of Canterbury | Mander J.B.,Texas A&M University
Structures | Year: 2016

Seismic evaluation and financial risk analysis of typical low rise reinforced concrete frames are performed. The financial risk assessment is determined on the basis of results of incremental dynamic analysis (IDA) of reinforced concrete frames analyzed using nonlinear time history analyses on IDARC platform with a suite of 20 ground motion records used by Vamvatsikos and Cornell (2002) for mid-rise buildings. Three frames were analyzed with capacity design concepts taking into account shear capacity, flexural capacity and contribution from floor reinforcement to beams. Maximum inter-story drift ratios obtained from time-history analyses are plotted against ground motion intensities. Results are statistically interpreted to develop cumulative distribution functions for frames. Fragility curves are plotted for HAZUS damage states of conventional structures. Fragility curves thus drawn are used to estimate the expected annual loss (EAL) of low rise RC frames using quadruple integral formula based on probabilistic financial risk assessment framework. © 2015 Elsevier B.V.


Verma S.K.,Rajiv Gandhi University | Bhadauria S.S.,Sg S Institute Of Technology And Science | Akhtar S.,Rajiv Gandhi University
Revista Romana de Materiale/ Romanian Journal of Materials | Year: 2013

Chloride ingress in concrete structures has been defined and modeled using Fick's law of diffusion by many researchers, and most of the researchers considered diffusion coefficient and surface chloride content as constants. Now, it has been recognized that diffusion coefficient (D) and surface chloride content (Cs) varies with the increase in age of the structure. This paper presents a methodology for evaluating the values of D and Cs for concrete structures of different age groups, and also investigated the variation of these parameters with respect to age of structure by using results of a field survey.


Verma S.K.,Rajiv Gandhi University | Bhadauria S.S.,Sg S Institute Of Technology And Science | Akhtar S.,Rajiv Gandhi University
Revista Romana de Materiale/ Romanian Journal of Materials | Year: 2015

Premature deterioration and failure of reinforced structures in last 4 -5 decades deviated focus of researchers from compressive strength to durability and service life of structures. Several structures constructed before invention of modern cement and other advanced building materials are in service condition, whereas new structures were deteriorating faster than those old structures. Therefore, determination of remaining service life of concrete structures is significant. This article presents a service life model suitable for semitropical regions of India, developed using MATLAB for estimating residual service life of deteriorating structures and for predicting corrosion initiation time for new structures. © 2015, Procema SA. All rights reserved.


Verma S.K.,Rajiv Gandhi University | Bhadauria S.S.,Sg S Institute Of Technology And Science | Akhtar S.,Rajiv Gandhi University
Revista Romana de Materiale/ Romanian Journal of Materials | Year: 2015

In the last few decades, failure of concrete structures awakened researchers to focus on durability influencing parameters along with compressive strength. Factors like environmental or exposure conditions are found to be governing the service life of reinforced concrete (RC) structures significantly. One of the major processes influencing condition of steel bars is carbonation of concrete surrounding steel bars in RC structures. Hence, considerable researches on the carbonation of concrete in laboratory and field are carried out around the world. Present article reviewed several previous carbonation studies conducted by researchers and by utilizing the results of a field survey determines coefficient of carbonation ‘K’ for concrete structures located in the City of Bhopal, India and for other semitropical regions. © 2015, Procema SA. All rights reserved.

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