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Condition Assessment of Existing Distress Concrete Structures for Effective Restoration/Strengthening Measures

Author(s):

Atul Sharma , Madhav Institute of Technology and Science gwalior; Dr. Manoj Trivedi, Madhav Institute of Technology and Science gwalior

Keywords:

Dismantle, Condition Assessment of Existing Distress Concrete Structures

Abstract

Corrosion is generally found in many RCC structures in India. This corrosion in the form reinforcing corrosion and cracking of cover concrete is found due to free ingress of water, oxygen and carbon dioxide through concrete cover kept to protect reinforcing bars corrosion in these structures. This process of specially apply to save their structure is safe and effective to many years to calculate our structure efficiency to how to know damages. Due to inadequate specifications to different deteriorating influences to resist durability, many RCC structures constructed during early 1990’s & late 2000’s & even upto 2011 in India, till the revision of codal provision on strength and durability as laid down according to IS 456:2000, are we got it to be in partly distressed conditions. With the objective of enhancing the Residual life of RCC members of the 57 year old framed structure, condition assessment carried out through survey, and laboratory analysis of samples collected from building or structure to analysis. Remedial measures & specifications required for restoration and strengthening of the RCC elements of the structure are also represent in this paper. The paper highlights the assessment of strength and durability of concrete to evaluate the extent of distress in this service structure. Apart from visual survey, residual strength and durability of distressed RCC structures, chemical effect of carbonation, chloride content & pH value of concrete as obtained on representative and selected RCC Columns/ beams/slabs is highlighted in this paper. The Non Destructive Evaluation covering UPV & Rebound Hammer values and Half Cell Potential with respect to status of corrosion of reinforcing bars on selected undistressed RCC Columns/ beams/slabs is also presented.

Other Details

Paper ID: IJSRDV5I60278
Published in: Volume : 5, Issue : 6
Publication Date: 01/09/2017
Page(s): 531-535

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