Browsing Journals: Department of Physical Sciences by Author "Ngari, Reginah Wangui"
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Bioremediation of mortar made from Ordinary Portland Cement degraded by Thiobacillus thioparus using Bacillus flexus
Ngari, Reginah Wangui; Thiong'o, Joseph K.; Wachira, Jackson M.; Muriithi, Genson; Mutitu, Daniel K. (Heliyon, 2021-06)Cement is widely used as a construction material in the construction industry. However, there are challenges affecting its durability efficacy. Cement mortar/concrete is subject to degradation by aggressive ions such ... -
Effect of Bacillus cohnii on Some Physicomechanical and Microstructural Properties of Ordinary Portland Cement
Ngari, Reginah Wangui; Thiong’o, Joseph K.; Wachira, Jackson M. (Hindawi, 2020-09)Cement-made materials face durability and sustainability challenges. (is is majorly caused by the presence of cracks. Cracking affects the mechanical strength of cement-based materials. Microbiologically induced calcite ...