DOI: 10.24128/IJRAER.2017.Z67st 15 PREVENTION OF SLAB LEAKAGE WITH CASE STUDY Sushil Bajirao Patil 1 , Shubham Vinod Patil 2 , Sandip Vilasrao Shinde 3 , Swapnil Narayan Pawar 4 , Sawan Kumar 5 1,2,3,4,5 Department of Civil Engineering, KJ College of Engineering & Management Research, Pune, Maharashtra, India Abstract- Water leakage is one of the serious causes of common building defects. Water leakage leads to dampness, corrosion of metals, fungal growth and also affects the structural properties of concrete as well as damage the aesthetic view of the structures. It also has an adverse effect on human health by creating unpleasant condition. If water leakage is prevented, almost 80% building defects can be eliminated. In construction, a building or structure can be prevent water leakage with the use of membranes and coatings to protect contents and structural integrity. The strength parameter gets adversely affected because of water leakages. The objective of this study is to analyze the depreciation in strength caused because of water leakage. Further the study is to be focused on selecting an appropriate method to avoid the leakage. Various methods are to be critically examined and a most economical and most appropriate method is selected for repairing the leakage. Strength parameters [using Rebound Hammer method] are again checked after the remedial measures are executed comparative results before and after applying the remedial measures are to be analyzed. Keywords—Waterproofing, Case study, prevention of water leakage, Rebound hammer test, Strengthening test of harden concrete, Ultrasonic Pulse velocity test, Ferro cement cover, external plate bonding, Non destructive test, External post tensioning etc. I. INTRODUCTION 1.1 Structural Leakage of slab: The term water leakage in the buildings is use to mean the coming out water from components like walls and floors of the building. It is observed in building industry that 99% of water leakage problems are focused on the terrace roof and in the toilets. The water leakage of the building is common problem in all types of buildings such as residential flats, hospital, office, school buildings etc. Water leakage or water seepage is one of the major causes of common building defects. Water leakage leads to dampness, corrosion of metals, fungal growth and also affects the structural properties of concrete as well as damage the aesthetic view of the structures. It also has an adverse effect on human health by creating discomfort condition. If leakage can be prevented, almost 80% building defects can be eliminated. Thus, selecting the best method for waterproofing plays an essential role in the welfare of the structure. In construction, a building or structure can be waterproofed with the use of membranes and coatings to protect contents and structural integrity. Waterproofing can be categorized under traditional and advanced (coating) waterproofing techniques. The objective of this study is to compare the different waterproofing techniques by considering factors like cost, durability and ease of use. The discovery of this study recommends that traditional methods are simple in use; however they are uneconomical and can be easily splinter due to change in atmospheric conditions. Whereas, advance waterproofing methods like coating and laminate system gives better results but are costly and acquire a great problems while installation. Coating method needs special scrutiny during surface preparation which requires skilled workmanship. The objective of this study is to analyze the depreciation in strength caused because of water leakage. Further the study is to be focused on selecting an appropriate method to avoid the leakage. Various methods are to be critically examined and a most economical and most appropriate method is