Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Onesmus Mulwa Munyao"'
Autor:
Eric Nthiga Njiru, Jackson Wachira Muthengia, Onesmus Mulwa Munyao, Daniel Karanja Mutitu, David Munyao Musyoki
Publikováno v:
Advances in Civil Engineering, Vol 2023 (2023)
Grinding aids (GAs) are polar chemicals introduced in cement mills in either liquid or powder form to improve on mill grindability efficiency. Studies have shown that some GAs not only help in grinding efficiency but also play vital roles in improvin
Externí odkaz:
https://doaj.org/article/69594ae1b23a4d5e951825575ba1abf8
Autor:
Onesmus Mulwa Munyao, Joseph Karanja Thiong’o, Jackson Muthengia Wachira, Daniel Karanja Mutitu, Romano Mwirichia
Publikováno v:
Journal of Chemistry, Vol 2020 (2020)
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 attack. Microbial activit
Externí odkaz:
https://doaj.org/article/a58c007e89cf47dbaf57646488e23807
Autor:
Daniel Karanja Mutitu, Jackson Muthengia Wachira, Romano Mwirichia, Joseph Karanja Thiong’o, Onesmus Mulwa Munyao, Muriithi Genson
Publikováno v:
Journal of Chemistry, Vol 2020 (2020)
The concrete/mortar durability performance depends mainly on the environmental conditions, the microstructures, and its chemistry. Cement structures are subject to deterioration by the ingress of aggressive media. This study focused on the effects of
Externí odkaz:
https://doaj.org/article/d6cb50a06f4943df8012dfea974d1970
Autor:
Onesmus Mulwa Munyao, Joseph Karanja Thiong’o, Jackson Muthengia Wachira, Daniel Karanja Mutitu, Genson Murithi, Romano Mwirichia
Publikováno v:
Advances in Materials Science and Engineering, Vol 2020 (2020)
Concrete structures placed in aggressive aqueous environments are vulnerable to degradation. Majority of studies have linked structural failures to the ingress of deleterious ions into the cement matrix. Some microbial activities may accelerate the p
Externí odkaz:
https://doaj.org/article/a08abd5c94954cc49efa5940673b4a1b
Autor:
Onesmus Mulwa Munyao, Joseph Karanja Thiong'o, Jackson Wachira Muthengia, Daniel Karanja Mutitu, Romano Mwirichia, Genson Muriithi, Joseph Mwiti Marangu
Publikováno v:
Heliyon, Vol 6, Iss 1, Pp e03232- (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 attack has not attracted muc
Externí odkaz:
https://doaj.org/article/611818f9a7a6400ebd14f880a6767d2d
Autor:
Daniel Karanja Mutitu, Jackson Muthengia Wachira, Romano Mwirichia, Joseph Karanja Thiong'o, Onesmus Mulwa Munyao, Genson Muriithi
Publikováno v:
Heliyon, Vol 5, Iss 11, Pp e02881- (2019)
Cement structures are subject to degradation either by aggressive media or development of micro/macro cracks which create external substance ingress pathways. Microbiocementation can be employed as a self-intelligent solution to this deterioration pr
Externí odkaz:
https://doaj.org/article/9fbcc1de7f884db2a3f18a3f0f26811e
Autor:
Genson Murithi, Daniel Karanja Mutitu, Joseph Karanja Thiong’o, Romano Mwirichia, Onesmus Mulwa Munyao, Jackson Muthengia Wachira
Publikováno v:
Advances in Materials Science and Engineering, Vol 2020 (2020)
Concrete structures placed in aggressive aqueous environments are vulnerable to degradation. Majority of studies have linked structural failures to the ingress of deleterious ions into the cement matrix. Some microbial activities may accelerate the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::873a04af45422b3092d4315fc40b15c5
https://doi.org/10.1155/2020/4191806
https://doi.org/10.1155/2020/4191806
Autor:
Daniel Karanja Mutitu, Jackson Muthengia Wachira, Romano Mwirichia, Joseph Karanja Thiong'o, Onesmus Mulwa Munyao, GENSON MURITHI
Publikováno v:
SSRN Electronic Journal.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01bb5e90358e1522f0bd7a3312a42080
https://doi.org/10.2139/ssrn.4108856
https://doi.org/10.2139/ssrn.4108856
Autor:
Genson Murithi, Daniel Karanja Mutitu, Onesmus Mulwa Munyao, Mwirichia Romano, Joseph Karanja Thiong’o, Jackson Muthengia Wachira
Publikováno v:
Journal of Chemical Reviews. 1:187-299
Deleterious ions in the environment such as sulfates may degrade the concrete structures. The interaction of cement hydration products with these destructive agents contributes to severe durability threat of the concrete structures. External sulfate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::096ca2c31d8704629aaa719fe8b7e970
https://doi.org/10.33945/sami/jcr.2019.4.5
https://doi.org/10.33945/sami/jcr.2019.4.5
Autor:
Joseph Karanja Thiong’o, Daniel Karanja Mutitu, Romano Mwirichia, Jackson Muthengia Wachira, Genson Muriithi, Onesmus Mulwa Munyao
Publikováno v:
Heliyon, Vol 5, Iss 11, Pp e02881-(2019)
Heliyon
Heliyon
Cement structures are subject to degradation either by aggressive media or development of micro/macro cracks which create external substance ingress pathways. Microbiocementation can be employed as a self-intelligent solution to this deterioration pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec3d51b02cc0bcfdf8c75cad85ae0577
http://www.sciencedirect.com/science/article/pii/S2405844019365405
http://www.sciencedirect.com/science/article/pii/S2405844019365405