Tensile Strength and Workability of High Strength Concrete Using Super Absorbent Polymer and Metakaolin as Partial Replacement for Cement
  • Author(s): Promise Uka Imo ; Iboroma Z. S Akobo ; Barisua E. Ngekpe
  • Paper ID: 1705458
  • Page: 423-431
  • Published Date: 06-03-2024
  • Published In: Iconic Research And Engineering Journals
  • Publisher: IRE Journals
  • e-ISSN: 2456-8880
  • Volume/Issue: Volume 7 Issue 8 February-2024
Abstract

The use of superabsorbent polymers (SAP) as an internal curing (IC) agent in concrete is one method for reducing autogenous shrinkage. Micro-voids formed by SAP are thought to be harmful to the concrete's mechanical qualities, particularly its compressive strength. The results of an experimental research of SAP's effect on the splitting tensile strength and workability of low water/binder (W/B) high strength concrete are presented in this paper (HSC). Because high doses of Super Absorbent Polymer (SAP) may successfully fill cracks in concrete while reducing strength, there is a need to identify alternate techniques of employing SAP that do not result in significant strength loss. The purpose of this study is to see how SAP performs when combined with Metakaolin (MK). This research used the Absolute Volume technique. Tensile strength characteristics in the hardened condition were assessed. For the experiment, SAP, MK was used to replace cement at a rate of (4 percent, 8 percent, 12 percent, and 16 percent) and (0.25 percent, 0.5 percent, 0.75 percent, and 1 percent). At 28 days, the tensile strength parameters of 0.2 percent 0.25 water binder ratios are compared. The addition of MK and SAP improved the tensile strength qualities of concrete, according to the findings. At 12 percent MK and 0.5 percent SAP, the best results were obtained. For SAP dose of 1% and Metakaolin dosage of 12%, the highest tensile strength was 4.45Mpa and 4.21Mpa at 0.2w/b and 0.25w/b after 28 days. When the dosage of SAP is more than 0.5 percent replacement, the strength increases.

Keywords

Super Absorbent Polymer, Metakaolin

Citations

IRE Journals:
Promise Uka Imo , Iboroma Z. S Akobo , Barisua E. Ngekpe "Tensile Strength and Workability of High Strength Concrete Using Super Absorbent Polymer and Metakaolin as Partial Replacement for Cement" Iconic Research And Engineering Journals Volume 7 Issue 8 2024 Page 423-431

IEEE:
Promise Uka Imo , Iboroma Z. S Akobo , Barisua E. Ngekpe "Tensile Strength and Workability of High Strength Concrete Using Super Absorbent Polymer and Metakaolin as Partial Replacement for Cement" Iconic Research And Engineering Journals, 7(8)