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    Copper extraction by wet chemical method 

    Kugeria, Peterson M.; Mwangi, Isaac; Wachira, Jackson M.; Njoroge, Peter (Elsevier, 2018-07)
    In many countries large deposits of copper with no locally established copper based industries occur because known methods for extraction are prohibitively expensive and unaffordable. This study reports on an affordable and ...
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    Properties of activated blended cement containing high content of calcined clay 

    Marangu, Joseph M.; Karanja, Thiong’o J.; Wachira, Jackson M. (Elsevier, 2018-08)
    This paper presents findings of an experimental investigation on sodium sulphate (Na2SO4) activated calcined clay e Portland cement blends in sulphuric acid media. Calcined clays were blended with Ordinary Portland Cement ...
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    Review of Carbonation Resistance in Hydrated Cement Based Materials 

    Marangu, Joseph Mwiti; Thiong’o, Joseph Karanja; Wachira, Jackson M. (Hindawi, 2019)
    Blended cements are preferred to Ordinary Portland Cement (OPC) in construction industry due to costs and technological and environmental benefits associated with them. Prevalence of significant quantities of carbon dioxide ...
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    Effects of biocementation on some properties of cement-based materials incorporating Bacillus Species bacteria – a review 

    Mutitu, Karanja D.; Munyao, Mulwa O.; Wachira, Jackson M.; Mwirichia, Romano K.; Thiong'o, Karanja J. (Taylor and Francis, 2019-11)
    There is a growing need in the construction industry to improve transfer and durability aspects of Portland pozzolana cement. Ureolytic bacteria have recently emerged as potential micro-organisms well known for precipitation ...
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    Influence of Starkeya novella on Mechanical and Microstructural Properties of Cement Mortars 

    Munyao, Onesmus Mulwa; Thiong’o, Joseph K.; Wachira, Jackson M.; Mutitu, Daniel Karanja; Mwirichia, Romano K. (Hindawi, 2020-04)
    Cement-based materials are subject to degradation during their service life. Most of the structural failures have been associated with corrosion of the rebar due to chloride ingress, alkali aggregate reaction, and/or sulfate ...
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    Formaldehyde Use and Alternative Biobased Binders for Particleboard Formulation: A Review 

    Kariuki, Stephen Warui; Wachira, Jackson M.; Kawira, Millien; Murithi, Genson Leonard (Hindawi, 2019-10)
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    Equilibrium Studies for Adsorption of Zn2+ on to Acid Treated Kikuyu Grass Pennisetum Clandestinum Biomass 

    Murithi, Genson; wa-Thiong’o, Karanja; Wachira, Jackson M. (2016-04)
    The feasibility of using Pennisetum clandestinum biomass as low-cost adsorbent for the removal of Zn2+ was investigated in batch studies. The Freundlich, Langmuir,Dubinin Raduskevich and Temkin adsorption isotherms were ...
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    Effects of Chlorides on Corrosion of Simulated Reinforced Blended Cement Mortars 

    Wachira, Jackson M. (Hindawi, 2019-03)
    Cementitious materials are subject to degradation when subjected to corrosive chloride media. This paper reports the experimental results on corrosion studies conducted on a potential cementitious material, PCDC, made ...
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    Copper extraction by wet chemical method 

    Mutembei, Peterson K.; Wachira, Jackson M.; Mwangi, Isaac; Njoroge, Peter (Elsevier, 2018-07)
    In many countries large deposits of copper with no locally established copper based industries occur because known methods for extraction are prohibitively expensive and unaffordable. This study reports on an affordable and ...
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    Physicochemical Performance of Portland-Rice Husk Ash-Calcined Clay-Dried Acetylene Lime Sludge Cement in Sulphate and Chloride Media 

    Wachira, Jackson M.; Thiong’o, Joseph K.; Marangu, Joseph M.; Murithi, Leonard G (Hindawi, 2019-03)
    This paper reports leach and/or intake of SO42−, Cl−, Ca2+, Na+, and K+ from and/or into cement mortar cubes made from a novel cementious material in naturally encountered environmental simulated media. The paper also ...
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    Author
    Wachira, Jackson M. (30)
    Mwirichia, Romano K. (6)Thiong’o, Joseph K. (5)Kawira, Millien (4)Marangu, Joseph M. (4)Munyao, Onesmus Mulwa (4)Mutitu, Daniel Karanja (4)Muriithi, Genson (3)Mutembei, Peterson K. (3)Thiong’o, Joseph Karanja (3)... View MoreSubjectCompressive strength (4)Materials science (3)Adsorption (2)Aggressive media (2)alkaliphilic (2)bacteria (2)biocementation (2)calcite precipitation (2)cement (2)Chemical engineering (2)... View MoreDate Issued2019 (10)2020 (6)2014 (4)2018 (4)2013 (2)2012 (1)2015 (1)2016 (1)2021 (1)Has File(s)Yes (30)

    University of Embu copyright ©  2021
    Contact us | Send Feedback
    Library ER 
    Atmire NV