Effects of Superplasticizers on Fresh and Hardened
Portland Cement Concrete Characteristics

Author - 

Fady M. A Hassouna
Hussein Abu-Zant


Superplasticizer or high-range water reducer is a specific type of admixtures that is used to produce low water-cement ratio high-strength concrete with normal or enhanced workability. Therefore, by using superplasticizers, it became easier for contractors nowadays to place highly workable, durable, pumpable concretewith higherstrength, and evenwith less cost than using otherwaysto produceconcretewith such properties. The effects of superplasticizers on physical properties of hardened and fresh concrete have been studied in this paper by using different dosages of superplasticizer. The compressive strength tests were conducted for concrete samples of different dosages at 7 days and 28 days to determine the properties of hardened concrete, while the slump tests were conducted to determine the properties of fresh concrete as well. The results show that thehighest compressive strength at 28 days was achieved at 3% dosage of superplasticizer, while the highest compressive strength at 7days achieved at 1% dosage. Whereas, using higher dosage of superplasticizer resulted in a lower compressive strength with very high slump value


Characteristics of concrete, concrete compressive strength, superplasticizer, workability of concrete


  • S. K. Duggal, Building Materials, 3rd ed. India: New Age International Publishers, 2008. 

  • V. Baroghel-Bouny, T. Q. Nguyen, and P. Dangla, “Assessment and prediction of RC structure service life by means of durability indicators and physical/chemical models”, Cement and Concrete Composites, Vol. 31, 2009, pp.522-534. 

  • W. Merretz, G. Smith, and J. Borget, “Achieving durability in construction”, CIA Concrete DurabilityWorksho,June 2009. [Online]. Available:http://www.sciaust.com.au

  • Michael S. Mamlouk and John P. Zaniewski, Materials for Civil and Construction Engineers, 3 rd ed. United States of America: Prentice Hall,2011. 

  • M. L. Wilson and S. H. Kosmatka, Design and Control of Concrete Mixtures, 15th ed. United States of America: Portland CementAssn, 2011. 

  • Edward G. Nawy, Concrete Construction Engineering Handbook, 4 th ed. United States of America: CRC Press, 2008. 

  • Salahaldein Alsadey, “Effect of superplasticizer on fresh and hardened properties of concrete”, Journal of Agricultural Science andEngineering,Vol.1,No. 2, 2015, pp. 70-74. 

  • I. B. Muhit, “Dosage Limit Detemination of Superplasticizing Admixture and Effect Evaluation on Properties ofConcrete”, InternationalJournal of Scientific and Engineering Research, Vol. 4, No. 3, 2013. [Online]. Available:http://www.ijser.org/researchpaper. ASTM Standard C143/C, 2003, “Slump of Hydralic Cement Concrete”, ASTM International, West Conshohocken, PA, 2003, DOI: 10.1520/C0033-03, www.astm.org.