Dr. Duwa Hamisi Chengula. “The Use of Blended Cinder Aggregates for Concrete Mixes”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 61, no. 1 (January 8, 2022): 44-61. Accessed May 24, 2022. https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/13626.