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Assessing the Influence of Aggregates and Cement Types on Fresh Roller Compacted Concrete Mixture

Saad I Sarsam
Professor, Sarsam and Associates Consult Bureau (SACB), Baghdad-IRAQ. Formerly at Department of Civil Engineering, College of Engineering, University of Baghdad, Iraq

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Abstract

Roller compacted concrete mixture RCC is considered as a sustainable pavement construction material, it is a heavy-duty concrete mixture with zero slump. An attempt has been made in the present investigation to design the fresh RCC mixture using two types of coarse aggregates (crushed and rounded), two types of fine aggregates (silica and river sand) and two types of cement (ordinary Portland and sulphate resistance). Concrete mixtures with dense gradation were prepared and compacted according to modified proctor design procedure. A moisture-density test was used to determine the maximum density and optimum moisture content and of RCC mixtures for each mix.  Five different percentages of cement (10-18) % are implemented and six different percentages of moisture (4 – 8) %) % are used to determine the dry density-moisture content relationships. It was observed that the maximum dry density of rounded aggregates mixture is higher than that of crushed aggregate mixture by (4.2, 8.3, 4.2, 4.2, and 5.1) % and (4.1, 1.4, 4.1, 2.0, and 2.7) % for (18, 16, 14, 12, and 10) % cement content respectively for mixtures constructed with silica and river sands respectively with ordinary Portland cement. However, the maximum dry density of rounded aggregate mixture is higher than that of crushed aggregate mixture by (3.5, 4, 7.1, 5.5, and 4.4) % and (2.7, 4.8, 2.3, 4.4, and 4.2) % for (18, 16, 14, 12, and 10) % cement content respectively for mixtures constructed with silica and river sands respectively with sulphate resistance cement. It was concluded that 12 % of Portland cement and (6 to 7) % of moisture are proper combination when silica or river sand were implemented, while (12 and 14) % of sulphate resistance cement and (6 to 7) % of moisture are proper combination when silica or river sand were implemented. abstract must be a precise and reflection of what is in your article.

Keywords

  • Density,
  • Roller Compacted Concrete,
  • Compaction,
  • Crushed aggregate,
  • Silica Sand

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Article Details

Volume 3, Issue 3, Year 2021

Published 2021-05-04

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How to Cite

Sarsam, S. I. (2021). Assessing the Influence of Aggregates and Cement Types on Fresh Roller Compacted Concrete Mixture. International Research Journal of Multidisciplinary Technovation, 3(3), 23–31. https://doi.org/10.34256/irjmt2134

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