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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Admixture Concepts for the Sub-Saharan African Environment with Indigenous Raw Materials
Author(s): Wolfram Schmidt, Nsesheye S. Msinjili, Herbert C. Uzoegbo, and John K. Makunza
Publication: Special Publication
Appears on pages(s): 491-506
Keywords: admixtures; lignosulphonate; polycarboxylate ether; robustness; self-compacting concrete; starch ether; sub-Saharan Africa
Abstract:The economic use of chemical admixtures depends on supply chains. Therefore, in most regions ins sub-Saharan Africa (SSA), the use of admixtures is not common practice. This amplifies the unfavorable framework for concrete construction such as fragmentary supply chains, high local cement prices, and unfavorable construction site facilities in this region significantly. The use of superplasticizer (SP) and stabilizing agents (STA) can enhance the concrete technology in SSA, since they can disassociate the concrete quality from external boundary influences. After providing a general overview of the peculiarities of the SSA boundary framework, economic concepts are provided, how existing material solutions can be significantly improved by the use of SPs and STAs based on locally available materials such as lignosulphonates and cassava starch. Finally a three step optimization process is described that helps developing flowable concrete based on materials that can be accessed in most locations in SSA.
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