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International Research Journal of Engineering and Technology (IRJET) Volume: 09 Issue: 11 | Nov 2022

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e-ISSN: 2395-0056 p-ISSN: 2395-0072

Life-Cycle Cost Analysis of Concrete Structures Jaydeep Singh Sanodiya1, Harsh Rathore2 M.Tech Scholar, Civil Engineering Department, SAGE University, Bhopal, Madhya Pradesh, India 2 Professor, Civil Engineering Department, SAGE University, Bhopal, Madhya Pradesh, India ---------------------------------------------------------------------***-------------------------------------------------------------------- Carbonation Abstract - The initial cost of structural design and 1

construction is usually prioritized in concrete structural design. The performance and durability of a building, however, gradually decrease over time due to the progressive loss of material traits and attributes. To maintain the performance of the buildings, maintenance of decaying concrete structures is necessary on a regular basis. But when it comes to upkeep, it's important to utilize your money as efficiently as you can. The predicted number of maintenance needs for both new and decaying structures must thus be estimated using techniques. This essay examines a number of approaches that academics have suggested for examining the life-cycle costs of buildings.

 Chloride attack  Sulphate attack  Freeze thaw attack  Alkali Silica Reactivity (ASR)

 Corrosion induced cracking Numerous researchers have identified corrosion-induced cracking as the primary factor contributing to the degeneration of concrete structures. The entry of chloride ions and carbonation are the main causes of corrosion.

Key Words: Life cycle cost, rehabilitate, deteriorating

 Carbonation

structures, Carbonation Chloride attack Alkali Silica Reactivity (ASR), one-dimensional environmental

In the process of carbonation, atmospheric carbon dioxide seeps into the concrete and interacts with hydroxides to produce carbonates. This lowers the concrete's alkalinity (pH) and raises the possibility of corrosion.

1. INTRODUCTION For many years, concrete has been a common building material. Research over the last several decades, however, has shown that concrete constructions deteriorate with time and need care. A building's life-cycle cost also includes maintenance and repair expenses in addition to construction expenditures. Traditionally, structural design has tended to place a lot of emphasis on the upfront costs associated with structural design and construction. The fact that this method does not carefully take into account the real future expenses that would accrue over the course of the structure's life is a significant disadvantage [1]. Therefore, it was necessary to determine when and how to repair, renovate, and replace the failing buildings. In order to analyse maintenance costs for deteriorating buildings throughout their service life, efficient approaches are thus required [2].

 Chloride concentration Concrete provides a passive layer on steel that shields it from corrosion thanks to its extremely alkaline composition. The protective coating may be destroyed by a high input of chloride ions from saltwater.

 Sulphate Attack Sulphates attack concrete by cooperating with hydrated parts in the solidified concrete glue, outstandingly calcium aluminates hydrate, which is why excessive levels of sulphates in soil or water may attack and ruin concrete. Places where cement is presented to the wetting and it are more helpless against dry cycle to sulphate assault.

The lifespan of a concrete building is comparable to that of a person. As people age, their bodies may deteriorate and become obsolete [3]. In general, life cycle cost analyses take into account the costs of construction, inspection, maintenance, and failure. This article examined many studies done by academics to determine the life cycle costs of concrete buildings..

 Freezing and thawing attack Alternating cycles of freezing and thawing have an impact on concrete's durability. Concrete expands as it freezes as a result of the displacement of water by ice formation, which damages the concrete. The aggregate particles, subsequent expansion of the cement paste, or both may lead to degradation.

2. CONCRETE STRUCTURES' DETERIORATION MECHANISMS

 Alkali Silica Reactivity (ASR)

Major processes of RC Structures' degradation have been recognised as:

When the alkali hydroxides and reactive silica in the concrete react, the concrete deteriorates. Alkali silica gel has

 Corrosion induced cracking

Impact Factor value: 7.529

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