Innovation potentials for construction materials with specific focus on the challenges in Africa

Autor: Wolfram Schmidt, Mike Otieno, Kolawole Olonade, Nonkululeko Radebe, Henri Van-Damme, Patience Tunji-Olayeni, Said Kenai, Angela Tetteh Tawiah, Kuukuwa Manful, Akeem Akinwale, Rose Mbugua, Andreas Rogge

Publikováno v: RILEM Technical Letters, Vol 5 (2020)

Africa is urgently in need of adequate basic infrastructure and housing, and it is one of the continents where massive construction activities are on the rise. There is a vast variety of potentially viable resources for sustainable construction on th

Externí odkaz: https://doaj.org/article/70d83df82fc140b39a94b223b572528e

Effect of Gum Arabic karroo as a Water-Reducing Admixture in Concrete

Autor: Rose Mbugua, Ramadhan Salim, Julius Ndambuki

Publikováno v: Materials, Vol 9, Iss 2, p 80 (2016)

Concrete is one of the most popular construction materials in the world. Chemical admixtures are ingredients added to concrete to enhance its properties. However, most chemical admixtures on the market today are expensive, thereby making them out of

Externí odkaz: https://doaj.org/article/3672de7e94cd433a83d3617966efdf66

Plant based chemical admixtures – potentials and effects on the performance of cementitious materials

Autor: Ines Leana Tchetgnia Ngassam, Kolawole Adisa Olonade, Wolfram Schmidt, Rose Mbugua, Hans-Carsten Kühne

Publikováno v: RILEM Technical Letters, Vol 3 (2019)

While today, engineers can choose from a wide range of rheology modifying admixtures, in some parts of the world, these are difficult to access, due to their complex processing. However, alternatives can be bio-based polymers such as polysaccharides

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cff088dd794274e37195d5f5c64f8b3f
https://doi.org/10.21809/rilemtechlett.2018.83

Acacia Karroo as Potential Admixture for Hot African Weather

Autor: Julius M. Ndambuki, Salim Wanjala, Rose Mbugua

Publikováno v: 3rd International Conference on the Application of Superabsorbent Polymers (SAP) and Other New Admixtures Towards Smart Concrete ISBN: 9783030333416

Africa needs a new approach for the use of admixtures that provide specific modification properties to concrete in addition to being compatible with African climatic conditions. For example, when concrete is mixed at elevated temperatures, there is q

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::da763a6a296eef1025f4e466ebec9c3c
https://doi.org/10.1007/978-3-030-33342-3_19

Influence Of Gum Acacia Karroo On Some Mechanical Properties Of Cement Mortars And Concrete

Autor: Rose Mbugua, Ramadhan Wanjala, Julius Ndambuki

Natural admixtures provide concrete with enhanced properties but their processing end up making them very expensive resulting in increase to cost of concrete. In this study the effect of Gum from Acacia Karroo (GAK) as set-retarding admixture in ceme

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4449b4e9a5e71cf93a04ce282a2fcc8f