Effects of nano titanium and nano silica on high-strength concrete properties incorporating heavyweight aggregate

Abu el-Hassan, Khaled, Department of Civil Engineering, Faculty of Engineering, Mansoura, Dakahlia, Egypt; Hakeem, Ibrahim Y., Department of Civil Engineering, Najran University, Najran, Najran, Saudi Arabia; Amin, Mohamed, Civil and Architectural Constructions Department, Faculty of Technology and Education, Suez, Suez, Egypt; Tayeh, Bassam A., Department of Civil Engineering, Islamic University of Gaza, Gaza, Palestine; Zeyad, Abdullah M., Department of Civil Engineering, Jazan University, Jizan, Jazan, Saudi Arabia; Agwa, Ibrahim Saad, Civil and Architectural Constructions Department, Faculty of Technology and Education, Suez, Suez, Egypt, Department of Civil Engineering, El-Arish High Institute for Engineering and Technology, El-Arish, North Sinai, Egypt; Elsakhawy, Yara, Department of Civil Engineering, Faculty of Engineering, Mansoura, Dakahlia, Egypt