Katimi, Eng. Lordficus. 2016. “The Effect of Retarding Chemical Superplasticizers on the Setting Time of Cement Pastes in Kenya: A Case Study of Ready Mix Concrete in Nairobi”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 28 (2):184-219. https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/5881.