This book is on the comparative studies on compressive strength of cement and cement-epoxy blends. Ordinary portland cement blended with different ratio of epoxy resin. The compressive strength of these blends after setting were compared. Compressive strength of blends depends on the sequence of blending of cement, epoxy-hardner and water. This work gives the details of the vital role of blending sequence. A mechanism was also proposed for the blending sequence. Co-authors are Shatakshi Verma, Satish Kumar, Pankaj Tiwari, Aditya Sharma and Hemant Kumar. Only two of them are mentioned in cover page due to space restriction. All of them are Chemical Engineers graduated from GB Technical University, Uttar Pradesh, India.