Study on waterproofing methods used for concrete slabs

Abstract

A building or a structure requires waterproofing, if the building materials are not watertight enough on their own. Therefore, waterproofing has become an essential component of a structure to protect its aesthetic appearance, prevent structural damages and for the safety of the occupants. For concrete slabs, major objective will be to stop the water intrusion into the interior of the building at various locations under various exposure conditions. Accordingly the type and the method of waterproofing required may vary with the location and exposure conditions. In the construction industry, many commercially available materials are used for waterproofing ground slabs, roof slabs and bathroom floors. In this research, field surveys were done to identify the types of waterproofing material, different methods of applications and quality controlling measures regarding to waterproofing. Furthermore, issues related to waterproofing were studied to identify common problems which can be arrived in a functioning building. Then the rectifying methods and their performance related to such issues were also studied. A laboratory test serieswas performed on commercially available waterproofing materials to check their suitability. After applying waterproofing materials ontest specimens, they were checked for water absorption under laboratory conditions for 24 hours. Furthermore specimens with integral admixtures were tested for compressive strength to identify any increase in their compressive strength due to crystalline formation.