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Admixture concepts for the Sub-Saharan African environment with indigenous raw materials

  • 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 mostThe 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.zeige mehrzeige weniger

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  • ACI Superplasticizers - 491 - 505.pdf
    eng
  • Superplasticizers and other chemical admixtures in concrete - Titelblatt_Impressum.pdf
    eng

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Metadaten
Autoren/innen:Wolfram Schmidt, Nsesheye Susan Msinjili, H. C. Uzoegbo, J. K. Makunza
Persönliche Herausgeber/innen:V. M. Malhotra, P. R. Gupta, T. C. Holland
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):11th International Conference on Superplasticizers and Other Chemical Admixtures in Concrete
Jahr der Erstveröffentlichung:2015
Organisationseinheit der BAM:7 Bauwerkssicherheit
7 Bauwerkssicherheit / 7.4 Baustofftechnologie
Herausgeber (Institution):ACI
Erste Seite:SP-302-37, 491
Letzte Seite:505
DDC-Klassifikation:Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Sanitär- und Kommunaltechnik; Umwelttechnik
Freie Schlagwörter:Lignosulfonate; Polycarboxylate ether; Robustness; Self-compacting concrete; Sub-Saharan Africa
Themenfelder/Aktivitätsfelder der BAM:Umwelt
Veranstaltung:11th International Conference on Superplasticizers and Other Chemical Admixtures in Concrete
Veranstaltungsort:Ottawa, Canada
Beginndatum der Veranstaltung:12.07.2015
Enddatum der Veranstaltung:15.07.2015
ISBN:9781942727224
Verfügbarkeit des Volltexts:Volltext-PDF im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:19.07.2016
Referierte Publikation:Nein