Katimi, Eng. Lordficus. “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, no. 2 (July 12, 2016): 184–219. Accessed July 3, 2024. https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/5881.