Workability and compressive strength properties of normal weight concrete using high dosage of fly ash as cement replacement

  • S. A. Shaikuthali
  • M. A. Mannan
  • Eethar Thanon DawoodEmail author
  • D. C. L. Teo
  • Raudhah Ahmadi
  • Idawati Ismail
Research Article


This study evaluates the workability and compressive strength properties of normal weight concrete (NWC) using high dosage of fly ash cement replacement. The goal is to find the suitable mix proportion of G40 NWC and to study the slump-loss at different interval time with fly ash replacement up to 60%. The strength properties of NWC were investigated using rebound hammer test as non-destructive and compressive strength test for verifying it. The acceptable mix proportion for fly ash replacement was then investigated using laboratory experiments. For strength properties of NWC, the samples were tested for 3, 7, 14 and 28 days. Results indicate that the inclusion of fly ash as partial cement replacement improves the workability of NWC concrete. The slump-loss of NWC with fly ash increases and it delays the setting time of fresh concrete. The strength of concrete reduces with an increment of fly ash. The strength measured using non-destructive test is lower when compared to compressive strength test. The results demonstrate that the replacement of cement with fly ash in concrete is beneficial and the targeted strength of concrete will achieve with time.


Slump-loss Non-destructive strength test Fly ash Compressive strength test 



The research was conducted at Department of Civil Engineering, Faculty of Engineering, Universiti Malaysia Sarawak, Sarawak, Malaysia.


This study was not funded.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of Civil Engineering, Faculty of EngineeringUniversiti Malaysia SarawakSarawakMalaysia
  2. 2.Department of Building and Construction Engineering, Technical College of MosulNorthern Technical UniversityMosulIraq

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