Iranian Polymer Journal

, Volume 27, Issue 5, pp 349–358 | Cite as

Effect of superabsorbent polymer on the shrinkage and crack resistance of concrete at early age

  • Juntao Dang
  • Jun Zhao
  • Wei Miao
  • Zhaohua Du
Original Research


The superabsorbent polymer (SAP) with different volumes and modes of entrained water is incorporated into concrete to study the effect of SAP on the compressive strength, flexural strength, shrinkage, plastic cracking and electrical resistivity of concrete at early age. The result indicated that the influence of SAP with different modes of entrained water on the early strength of concrete is relatively obvious. It is beneficial for the early strength of concrete to add pre-absorbed SAP whose internal curing (IC) is detracted from mixing water and unabsorbed SAP. But the early strength of concrete is decreased by adding pre-absorbed SAP. The effect of pre-absorbed SAP is limited on shrinkage of concrete when IC water is detracted from mixing water. The unabsorbed SAP gradually decreases the concrete shrinkage with its volume increase. The moderate volume of pre-absorbed SAP can decrease the early concrete shrinkage. In addition, SAP can effectively alleviate the early appearance and development of concrete cracks. Furthermore, the pre-absorbed SAP can efficiently enhance the crack resistance of concrete. When the unabsorbed SAP is added, the cracking of concrete is reduced with the increase of volume. The longer the curing age, the more obvious would be the influence of SAP on the internal humidity of concrete, which effectively delays the increase of concrete resistivity.


Crack resistance Early performance Internal curing Shrinkage Superabsorbent polymer 



This research was supported by Program for Innovative Research Team of Education Ministry of China (IRT_16R67) and Program for Innovative Research Team (in Science and Technology) in University of Henan Province (15IRTSTHN026).

Compliance with ethical standards

Conflicts of interest

The authors declare no conflict of interest.


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Copyright information

© Iran Polymer and Petrochemical Institute 2018

Authors and Affiliations

  1. 1.College of Civil EngineeringZhengzhou UniversityZhengzhouChina
  2. 2.College of Mechanics and Engineering ScienceZhengzhou UniversityZhengzhouChina
  3. 3.Multi-Functional Design and Research AcademyZhengzhou UniversityZhengzhouChina

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