Evaluation of the superplasticizer effect on the workability and strength of concrete

  • Authors

    • Salahaldein Alsadey 1Department of Civil Engineering, Faculty of Engineering, Bani Waleed University, Libya
    • Saieed Mohamed Biotechnology Research Center, Libya University of Tripoli, Libya
    2020-02-18
    https://doi.org/10.14419/ijet.v9i1.29909
  • Concrete, Admixtures, Superplasticizers, Workability, Compressive Strength Semicolon.

  • Abstract

    The adverse effects of temperature on the properties of fresh concrete include increased water demand, shorter setting time and increased slump loss. Superplasticizer (SP) is important for enhancing the workability and setting time of concrete in hot weather. Hence, an experi-mental investigation was conducted to determine the optimum dosage of an admixture and to study the effect of over dosing this admixture. Concrete mixes with SP dosages of 0.8%, 1% and 1.2% by weight of cement were prepared along with a control mix (water/cement ratio of 0.55). After casting, the concrete samples underwent normal curing. Among the properties of fresh concrete determined were compressive strength as well as workability. The over dosage of SP appeared to degrade the properties of concrete with an indication of lower compres-sive strength. However, if the dosage levels are lower than the optimum dosage, raising the admixture dosage might help enhance the con-crete characteristics.

     

  • References

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      [6] Salahaldein Alsadey, 2015 “Effect of Superplasticizer on Fresh and Hardened Properties of Concrete†Journal of Agricultural Science and Engineering, Vol. 1, No. 2, 2015, pp. 70-74, http://www.publicscienceframework.org/journal/jase. American Institute of Science (AIS).

      [7] Salahaldein Alsadey*, (2012) “Effects of Superplasticizing Admixture on Properties of Concrete†Paper presented at International Conference on Transport, Environment and Civil Engineering (ICTECE’ 2012). Kuala Lumpur (Malaysia), August 25-26, 2012.

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  • How to Cite

    Alsadey, S., & Mohamed, S. (2020). Evaluation of the superplasticizer effect on the workability and strength of concrete. International Journal of Engineering & Technology, 9(1), 198-201. https://doi.org/10.14419/ijet.v9i1.29909

    Received date: 2019-09-25

    Accepted date: 2019-12-25

    Published date: 2020-02-18