PROPERTIES OF STRUCTURAL LIGHTWEIGHT HIGH STRENGTH SELF-COMPACTING CONCRETE

Authors

  • Shahd Hesham Mohamed Al-Azhar university
  • Ahmed Gomaa Asran
  • Mohamed Taha Noman
  • Mohamed Abdel Azim

Keywords:

Structural lightweight concrete, Self-compacting concrete, High strength concrete, Pumice

Abstract

Combining structural lightweight concrete and self-compacting concrete advantages is a significant challenge in modern concrete technology research. The density of concrete can be reduced by using lightweight aggregate. Consequently, structural self-weight is also reduced. Porous lightweight aggregates have low compressive strength, which presents a challenge in developing high-strength structural lightweight self-compacting concrete. The strength and weight of self-compacting concrete can be enhanced to obtain a special concrete with multiple benefits. Pumice from North Sinai in Egypt was used as a locally available natural lightweight aggregate. The properties of the concrete produced were studied at fresh and hardened states in different proportions of partial replacement of dolomite with pumice to find the optimum replacement percentage. The optimum mix has a high strength of 60 MPa and 1.98 g/cm³ unit weight, which is considered structural lightweight concrete and high strength. Moreover, it has self-compacting concrete characteristics. Results showed that the workability of self-compacting concrete increased with the decrease of concrete unit weight.

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Published

2022-08-01

How to Cite

Hesham Mohamed, S., Gomaa Asran, A., Taha Noman, M. ., & Abdel Azim, M. . (2022). PROPERTIES OF STRUCTURAL LIGHTWEIGHT HIGH STRENGTH SELF-COMPACTING CONCRETE. GEOMATE Journal, 23(96), 50–60. Retrieved from https://geomatejournal.com/geomate/article/view/3292