Browsing School of Pure and Applied Sciences by Author "Thiong'o, Joseph Karanja"
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Pyroprocessing and the Optimum Mix Ratio of Rice Husks, Broken Bricks and Spent Bleaching Earth to Make Pozzolanic Cement
Nalobile, Protus; Wachira, Jackson Muthengia; Thiong'o, Joseph Karanja; Marangu, Joseph Mwiti (Elsevier, 2019)This paper presents the findings of an experimental investigation on optimizing pozzolanic activity of a blend of Rice Husks (RH), Spent Bleaching Earth (SBE) and Broken Bricks (BB) to form pozzolana that would have ... -
Study on the Effect of Thiobacillus Intermedius Bacteria on the Physico-Mechanical Properties of Mortars of Ordinary Portland Cement
Munyao, Onesmus Mulwa; Thiong'o, Joseph Karanja; Muthengia, Jackson Wachira; Mutitu, Daniel Karanja; Mwirichia, Romano; Muriithi, Genson; Marangu, Joseph Mwiti (PubMed, 2020)Most of concrete structural failures are attributed to poor workmanship and poor engineering designs. Some microorganisms present in sewer systems can degrade the concrete and/or mortar. Concrete failures due to microbial ...