Shrinkage & CreepⅠ

[1293] STUDY ON DRYING SHRINKAGE OF SLAG CEMENT MORTAR WITH HEAT CURING: INFLUENCE OF LIMESTONE, GYPSUM, AND SHRINKAGE-REDUCING AGENT

Asiya Nurhasanah HABIRUN¹, Shingo ASAMOTO¹, Yao LUAN¹, Keisuke TAKAHASHI² (1.埼玉大学 2.香川大学)

Keywords:Drying shrinkage、 slag cement、 heat curing、 SRA、 C-(A)-S-H structures

This study examines drying shrinkage in slag cement heat cured at 60°C with added gypsum (Gyp), limestone powder (LS), and shrinkage-reducing agent (SRA). The heat curing accelerates hydration but increased shrinkage, which is gained that ettringite conversion to monosulfate may be related with the increase. Adding Gyp and LS stabilizes ettringite, promotes monocarbonate formation, and shrinkage. SRA further mitigates shrinkage by modifying the C-(A)-SH structures.