Performance of cement based materials is a major concern and new ways to improve the engineering properties of these cementitious materials to ensure longevity are being investigated. Use of nanotechnology is one such novel route through which high performance materials can be developed. Nanotechnology can be gainfully applied in cementitious materials to address the issues of durability and sustainability. Manipulation at the nanoscale can change chemical reactions, temperature, electricity, magnetism etc. In addition, the nanomodification can result improvements in strength, shrinkage,...