| Title |
Effect of Combined Superabsorbent Polymers and Expansion Agent on Shrinkage Behavior of High Strength Mortar |
| Authors |
Kim, Minsoo ; Hong, Sung-Gul |
| DOI |
https://doi.org/10.5659/JAIK_SC.2019.35.12.157 |
| Keywords |
High Strength Mortar; Superabsorbent Polymers; Autogenous Shrinkage; Drying Shrinkage |
| Abstract |
Superabsorbent polymers(SAPs) are powdery material that absorb water several tens or hundreds of times its own mass. It has been reported
that when SAPs are incorporated into a high strength cementitious material, the autogenous shrinkage of the material is reduced. Cross-linked
sodium polyacrylate type SAPs are relatively safe for human body and low in production cost. In order to apply this type of SAPs to the
admixture for total(plastic+autogenous+drying) shrinkage reduction of high strength mortar, the shrinkage behavior of mortar when an
expansion agent(EA) and SAPs were mixed together was analyzed. As a result, it was found that the shrinkage was reduced when an EA
5% (mass % of cement) and SAPs 0.4% were mixed together than the mortar containing only an EA 10%. The shrinkage was further
reduced when EA 10% and SAPs 0.4% were incorporated into mortar. |