Development of nano structured polyurethane based bituminous waterproofing membrane

Abstract

Polymer-based composites, fortified with nanomaterials like carbon, graphene, or nano clay, offer exceptional durability, water repellence, and mechanical strength, making them indispensable in construction and infrastructure projects. Their versatility allows tailored solutions for various applications, providing cost-effectiveness through reduced maintenance and extended service life. In this thesis, the focus is on developing a composite that combines bitumen and polymer to yield a versatile solution for waterproofing requirements. This composite is then fabricated into a protective membrane for structures. Fabricated membrane specimens made from combinations of different grades of polyurethane and bitumen undergo a comprehensive series of experimental tests, including tensile strength, elongation, tear load, puncture resistance, and shore hardness, with respect to relevant ASTM standards to assess their various properties. The analysis of these experimental results helps in identifying the optimal blend of polyurethane with bitumen for the creation of an effective protective membrane. The study also delved into the permeability of membranes produced from the optimized PU-Bitumen composite. Furthermore, the behavior of this optimized mixture of PU and bitumen was investigated when varying percentages of carbon nanoparticles were introduced. The optimized composite-made membrane was then compared with other waterproofing materials available in the market, providing valuable insights into its performance and suitability for practical applications. The findings from this study carry substantial implications for practical applications. It provides valuable insights into the design, development, and utilization of these membranes across diverse domains and in protective coating applications in real-world scenarios. This research bridges the gap between theoretical understanding and practical implementation, enhancing the efficiency and reliability of these purpose-designed membranes in engineering projects.