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Prof. Jackson W. Muthengia Publications

Journal Papers

  1. Mwangi Wanjiku, K., Muthengia, J. W., Ogunah, J., Mutitu, D. K., Kinuthia, J., Mwirichia, R., ... & Musyoki Munyao, D. (2022). Effects of Lysinibacillus sphaericus on Physicomechanical and Chemical Performance of OPC Blended with Natural Tuff and Pulverized Fly Ash. Advances in Materials Science and Engineering, 2022.
  2. Musyoki, D. M., Muthengia, J. W., Ogunah, J., Mutitu, D. K., Kinuthia, J., Mwirichia, R., ... & Genson, M. (2022). Effect of Immobilizing Bacillus megaterium on the Compressive Strength and Water Absorption of Mortar. Journal of Chemistry, 2022.
  3. Mutitu, D. K., Muthengia, J. W., Mwirichia, R., Thiong’o, J. K., Mulwa, M. O., & Genson, M. (2021). Microbial effect on water sorptivity and sulphate ingress by Bacillus megaterium on mortars prepared using Portland Pozzolana cement. Journal of Applied Microbiology, 131(2), 528-542.
  4. Ngari, R. W., Thiong'o, J. K., Wachira, J. M., Muriithi, G., & Mutitu, D. K. (2021). Bioremediation of mortar made from Ordinary Portland Cement degraded by Thiobacillus thioparus using Bacillus flexus. Heliyon, 7(6), e07215.
  5. Munyao, O. M., Thiong’o, J. K., Muthengia, J. W., Mutitu, D. K., Mwirichia, R., Muriithi, G. and Marangu, J. M. (2020) Study on the Effect of Thiobacillus intermedius Bacteria on the Physico-Mechanical Properties of Mortars of Ordinary Portland Cement, Heliyon, Volume 6, Issue 1, January 2020, e03232 https://doi.org/10.1016/j.heliyon.2020.e03232
  6. Kugeria, P. M., Mwangi, I. W., Muthengia, J. W. and Njoroge, P. W. (2019) Monitoring the Extraction of Copper from Chicken Dung Leachate Using an Aluminium Electrode as Indicator, Heliyon, 5 (2019) https://doi.org/10.1016/j.heliyon.2019.e02921
  7. Mutitu, D. K., Wachira, J. M., Mwirichia, R., Thiong’o, Munyao, O. M. and Muriithi, G. (2019) Influence of Lysinibacillus Sphaericus on Compressive Strength and Water Sorptivity in Microbial Cement Mortar, Heliyon, 5 (2019) e02881, https://doi.org/10.1016/j.heliyon.2019.e02881
  8. Kariuki, S. W., Wachira, J., Kawira, M. and Murithi, G. L. (2019) Characterisation of Prototype Formulated Particleboards from Agroindustrial Lignocellulose Biomass Bonded with Chemically Modified Cassave Peel Starch, Advances in Materials Science and Engineering, Volume 2019, Article ID 1615629, 15 pages, https://doi.org/10.1155/2019/1615629
  9. Kariuki, S. W., Wachira, J., Kawira, M. and Murithi, G. (2019) Formaldehyde Use and Alternative Biobased Binders for Particleboard Formulation: A Review, Journal of Chemistry, Volume 2019, Article ID 5256897, 12 pages, https://doi.org/10.1155/2019/5256897
  10. Nalobile, P., Wachira, J. M., Thiongó J. K. and Marangu, J. M. (2019) Pyroprocessing and the Optimum Mix Ratio of Rice Husks, Brocken and Spent Bleaching Earth to Make Pozzolanic Cement, Heliyon, Volume 5, Issue 9, Article e02443, https://doi.org/10.1016/j.heliyon.2019.e02443
  11. Wachira, J. M. and Marangu, J. M. (2019) Chloride Diffusivity in Blended Cement Made from Selected Industrial and Agrowastes Advances in Materials Science and Engineering, Volume 2019, Article ID 2814320, 7 pages, https://doi.org/10.1155/2019/2814320
  12. Wachira, J. M. Thiongó J. K., Marangu, J. M. and Murithi L. G. (2019) Physicochemical Performance of Portland – Rice Husk Ash-Calcined Clay – Dried Acetylene Lime Sludge Cement in Sulphate and Chloride Media, Advances in Materials Science and Engineering, Vol. 2019, https://doi.org/10.1155/2019/5618743
  13. Wachira, J. M. (2019) Effects of Chlorides on Corrosion of Simulated Reinforced Blended Cement Mortars, International Journal of Corrosion, Vol. 2019, https://doi.org/10.1155/2019/2123547
  14. Marangu, J. M., Thiongó J. K. and Muthengia, J. W. (2019) Review of Carbonation Resistance in Hydrated Cement-Based Materials, Journal of Chemistry, Volume 2018, https://doi.org/10.1155/2018/1595230
  15. Kugeriaa, M. P., Mwangi, I., Wachira, J. M., Njoroge, P. (2019) Copper extraction by wet chemical method. Journal of Sustainable Mining Volume 17, Issue 4, 2018, Pages 202-208
  16. Marangu, J. M., Thiongó J. K. and Wachira, J. M. (2018) Properties of Activated Blended Cement Containing High Content of Calcined Clay, Heliyon, Volume 4 Issue 8. https://doi.org/10.1016/j.heliyon.2018.e00742
  17. Kugeria, P. M., Mwangi, I. Wachira, J. and Njoroge, P. (2018) Copper Extraction by Wet Chemical Method, Journal of Sustainable Mining, https://doi.org/10.1016/j.jsm.2018.07.003  
  18. Marangu, J. M., Thiongó J. K. and Wachira, J. M. (2018) Chloride Ingress in Chemically Activated Calcined Clay-Based Cement, Journal of Chemistry, https://doi.org/10.1155/2019/8489671
  19. Mutitu, D. K., Karanja, J. K. and Wachira, J. M. (2014) Diffusivity of Sulphate in Selected Ordinary Portland Cement and Portland Pozzolana Cements, Journal of the Kenya Chemical Society, Volume 8 Issue 1, pp 13 - 25
  20. Wachira, J. M., Ngari, R. W., Thiongó J. K. and Marangu, J. M. (2019) Effect of Sulphate and Chloride Ingress on Selected Cements Mortar Prisms Immersed in Sea Water and Leather Industry Effluent, Advances in Civil Engineering, in the Issue: The Effect of Coastal Environment on the Degradation of Reinforced Concrete Structures, Volume 2019, https://doi.org/10.1155/2019/8191689
  21. Ngui, F., Wachira, J. M., Marangu, J. M., Thiongó, J. K. and (2019) Performance of Ground Clay Brick Mortars in Simulated Chloride and Sulphate Media, Journal of Engineering, Volume 2019, Article ID 6430868, 12 pages https://doi.org/10.1155/2019/6430868
  22. Mutitu, K. D., Munyao, M. O. Wachira, J. M. Mwirichia, R., Thiongó J. K. and Marangu, M. J. (2019) Effects of Biocementation on Some Properties of Cement-Based Materials Incorporating Bacillus Species Bacteria, Journal of Sustainable Cement-Based Materials, https://doi.org/10.1080/21650373.2019.1640141
  23. Mwiti M. J., Karanja T. J., Muthengia W. J. (2018) Thermal Resistivity of Chemically Activated Calcined Clays-Based Cements. In: Martirena F., Favier A., Scrivener K. (eds) Calcined Clays for Sustainable Concrete. RILEM Bookseries, vol 16. Springer, Dordrecht, https://doi.org/10.1007/978-94-024-1207-9_53

2017- 2005

1.Mutitu, D. K., Karanja, J. K. and Wachira, J. M. Diffusivity of Sulphate in Selected Ordinary Portland Cement and Portland Pozzolana Cements, Journal of the Kenya Chemical Society, Volume 8 Issue 1, pp 13 - 25
2. Mbugua, G.W., Mbuvi, H. M. and Muthengia, J. W. Ash Derived Zeolite Blended with Water Hyacinth Ash for Enhanced Adsorption of Cadmium Ions, Current World Environment, International Research Journal of Environmental Science.
3. Mutitu, D. K., Karanja, J. K. and Wachira, J. M. (Mar-April 2014) Diffusivity of Chloride Ion in Mortar Cubes Made Using Ordinary Portland and Portland Pozzolana Cements, IOSR Journal of Applied Chemistry, Volume 7, Issue 2 Ver. 1, PP 67-73.
4. Mutembei, P. K., Naftali, T. M. and Muthengia, J. W. (March, 2014) Iron Enrichment In Laterites Soils From Selected Regions In Kenya Using Magnetic Separation, IOSR Journal of Engineering Vol. 04, Issue 03 pp 42-48.
5. Kenyanya, O., Muthengia J. and Harun, M. (2013) Determination of Potassium Levels in Intensive Subsistence Agricultural Soils in Nyamira County, Kenya International Journal of Agriculture and Forestry 3 (7):294 - 302.
6. Kenyanya, O., Muthengia, J. M. Mbuvi, H. M. and Omayo, E. K. (November 2013) Comparative Studies of four parametric Models for Potassium Adsorption in Soils of Nyamira County, Kenya, International Journal of Management, IT and Engineering.
7.Marangu, J. M., Muthengia, J. W. and wa-Thiong’o, J. K. (2014) Performance of Potential Pozzolanic Cement in Chloride Media IOSR Journal of Applied Chemistry IOSR-JAC Vol 7, Issue 2 Ver. 1, PP 36-44.
8. Muthengia, J. W., Muthakia, GK and wa-Thiong’o JK (2012) Cementing Material from Rice Husk – Broken Bricks – Spent Bleaching Earth – Dried Calcium Carbide Residue, Mediterranean Journal of Chemistry
9. Wachira, J (2012) Chloride Ingress  in Pozzolana Based Cement, 7Th Kenya Chemical Society International Conference, Abstract Book, Held in Maseno University between 15Th – 19Th October, 2012
10. Muriithi NT, Wachira, JM, Mutembei, PK, Njoroge, PW, Wanjau RN and Keru, GK, Concentration of Iron in Laterites: Increasing the Availability of Iron to Achieve Vision 2030, 7Th Kenya Chemical Society International Conference, Book of Abstract, Held in Maseno University between 15Th – 19Th October, 2012
11. Muriithi, NT, Wachira JM and Keru, GK (2010) Wasted Natural Resources, Case Study of Iron Rich Murram Deposits in Kenya, 1ST East African Regional Scientific Conference, Kenyatta University, Nairobi
12. Muthengia, JW, wa-Thiong’o, JK and Muthakia, GK, (2005) Spent Bleaching Earth as a Pozzolanic Material, Journal of Civil Engineering Research and Practice, Vol 2 pp 15 -21
13. Muthengia, JW, wa-Thiong’o, JK and Muthakia, GK (2005) Calcium Carbide Residue as Alternative to Calcium Hydroxide for Commercial Building Lime Pozzolana Material, Kenya Chemical Society, 5Th International Conference, August, 22ND – 26TH 2005, pp 209 – 213.


Conferences/Workshops/Seminars Attended and Participated

1.     4th – 7th November, 2014, 1st Dedan Kimathi University of Technology Conference
2.     15th – 18th October, 2012, 7Th Kenya Chemical Society International Conference, Held at Maseno University.
3.     28th April, 2012 – The Kenya Chemical Society Workshop Held at Jomo Kenyatta University of Agriculture and Technology, Nairobi
4.     14th – 15th April, 2012 – Research Methodology Workshop of the Association of African Universities (AAU) – EASRN of Tertiary Institution Against The HIV/AIDS   Pandemic, Held at Kenyatta University, Nairobi
5.     10th  - 14th August, 2010 – 1St East African Regional Scientific Conference held at Kenyatta University, Nairobi
6.     25th April, 2009 -  The Kenya Chemical Society Workshop Held at University of Nairobi

Patent/Innovations

  1. Marangua, J. M., Isaksson, R., Muthengia, J. W., Karanja, T. J. and Kinuthia, J. M. (2019) Affordability and Sustainability of Non-Conventional Construction Materials in Kenya, 18th International Conference on Non-Conventional Materials and Technologies” Construction Materials & Technologies for Sustainability” (18th NOCMAT 2019) 24th – 26th July 2019 Nairobi, Kenya
  2. Muriithi, N., Waithaka, P., Wanjau, R. and Muthengia J. W. (2015) Concentration of Laterites Using Biomass, Industrial Property Journal, KIPI
    Peer-Reviewed Conference Papers
  3. Kariuki, S. W., Onindo, C. and Muthengia, J. W. (2014) Concentration of Titanium in Iron-Rich Laterites Using In-Situ Carbonized Biomass, The First DeKUT International Conference on Science, Technology and Innovation, Conference Proceedings, Nyeri, Kenya.

Peer-Reviewed Conference Papers

  1. Mburu, J. N., Njogu, P. M. and Muthengia, J. W. (2015) Pyrolysis Process Studies for Post-Consumer Polyethene Waste Conversion and Upgrading of the Pyrolysis Oil, The10th JKUAT Scientific Technological and Industrialization Conference and Exhibitions, Conference Proceedings, Kenya

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