Advances of Science and Technology. 7th EAI International Conference, ICAST 2019, Bahir Dar, Ethiopia, August 2–4, 2019, Proceedings

Research Article

Assessment of Quality of Sand Sources and the Effect on the Properties of Concrete (The Case of Bahir Dar and Its Vicinities)

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  • @INPROCEEDINGS{10.1007/978-3-030-43690-2_48,
        author={Abel Fantahun and Kassahun Admassu},
        title={Assessment of Quality of Sand Sources and the Effect on the Properties of Concrete (The Case of Bahir Dar and Its Vicinities)},
        proceedings={Advances of Science and Technology. 7th EAI International Conference, ICAST 2019, Bahir Dar, Ethiopia, August 2--4, 2019, Proceedings},
        proceedings_a={ICAST},
        year={2020},
        month={6},
        keywords={Concrete Sand Sand quality Chemical composition Workability Compressive strength Cost},
        doi={10.1007/978-3-030-43690-2_48}
    }
    
  • Abel Fantahun
    Kassahun Admassu
    Year: 2020
    Assessment of Quality of Sand Sources and the Effect on the Properties of Concrete (The Case of Bahir Dar and Its Vicinities)
    ICAST
    Springer
    DOI: 10.1007/978-3-030-43690-2_48
Abel Fantahun1,*, Kassahun Admassu2,*
  • 1: Bahir Dar University
  • 2: Addis Ababa University
*Contact email: abelfantahun10@gmail.com, kassahun.admassu@eiabc.edu.et

Abstract

The main purpose of this study is to assess the quality of sand sources, the effect on workability, compressive strength and cost of concrete in and around Bahir Dar. Initially, questionnaires and interviews were made with stakeholders and suppliers. After that, different natural sand samples were collected from 13 sand supply locations. Then, their physical and chemical properties were tested in laboratory. Finally, mix design is prepared for a normal strength concrete. From the survey results, it was found that, about 87.5% of the stakeholders use Arno, Tana, Tis-Abay, Addis-Zemen, Andasa and Rib as the major sand sources out of the thirteen around Bahir Dar and its vicinities. And about 67.5% of the stakeholders use more than one source. Trial mix designs were prepared for concrete production focusing on six of the common sources. The results have shown that, for normal strength concrete, the blended sand from six common sand sources met workability of the fresh concrete and there is no significant difference in compressive strength of concrete with blended sand. Finally, the finding has indicated that, all the thirteen supply locations have quality problems; especially in gradation as well as, in silt and clay contents. Based on the research outcome blending Addis-Zemen sand with that of Ribb sand incurs the least cost, while at the same time fulfilling requirements of fresh and hardened concrete.