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Effect of Foundry Sand and Mineral Admixtures on Mechanical Properties of Concrete

Autor(en):


Medium: Fachartikel
Sprache(n): Englisch
Veröffentlicht in: Archives of Civil Engineering, , n. 1, v. 64
Seite(n): 117-131
DOI: 10.2478/ace-2018-0008
Abstrakt:

Foundry sand waste can be utilized for the preparation of concrete as a partial replacement of sand. The strength properties of M25 grade concrete are studied with different percentages of replacement of fine aggregates by foundry sand at 0%, 10%, 20%, 30%, 40%, and 50%. The optimum percentage of foundry sand replacement in the concrete corresponding to maximum strength will be identified. Keeping this optimum percentage of foundry sand replacement as a constant, a cement replacement study with mineral admixtures such as silica fume (5%, 7.5%, 10%) and fly ash (10%, 15%, 20%,) is carried out separately. The maximum increase in strength properties as compared to conventional concrete was achieved at 40% foundry sand replacement. Test results indicated that a 40% replacement of foundry sand with silica fume showed better performance than that of fly ash. The maximum increase in strengths was observed in a mix consisting of 40% foundry sand and 10% silica fume. SEM analysis of the concrete specimens also reveals that a mix with 40% foundry sand and 10% silica fume obtained the highest strength properties compared to all other mixes due to the creation of more C-H-S gel formations and fewer pores.

Structurae kann Ihnen derzeit diese Veröffentlichung nicht im Volltext zur Verfügung stellen. Der Volltext ist beim Verlag erhältlich über die DOI: 10.2478/ace-2018-0008.
  • Über diese
    Datenseite
  • Reference-ID
    10476746
  • Veröffentlicht am:
    25.11.2020
  • Geändert am:
    25.11.2020
 
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