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  1. A new approach for the mix design of (patch) repair mortars

    A new approach for the mix design of (patch) repair mortars

    Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Inès L. Tchetgnia Ngassam --- Department of Civil Engineering, South Africa Philemon Arito --- Department of Civil Engineering, South Africa Hans Beushausen --- Department of Civil Engineering, South Africa
    The failure of most repairs in concrete structures is mainly manifested in the form of cracking and/or debonding of the repair layer. These two repair mechanisms could lead to the continuous corrosion of reinforcing steel in concrete. Cracking and debonding...
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  2. Rice husk ash as a sustainable supplementary cementitious material for improved concrete properties

    Rice husk ash as a sustainable supplementary cementitious material for improved concrete properties

    Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Nsesheye Susan Msinjili --- Division 7.4 - Technology of Construction Materials, Germany Wolfram Schmidt --- Division 7.4 - Technology of Construction Materials, Germany Andreas Rogge --- Division 7.4 - Technology of Construction Materials, Germany Hans-Carsten Kühne --- Division 7.4 - Technology of Construction Materials, Germany
    There is a wide range of research worldwide on supplementary cementitious materials (SCMs) such as fly ash, slag and silica fumes that have pozzolanic properties sufficient for substituting ordinary Portland cement (OPC). These SCMs are known to significantly improve concrete...
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