収縮・クリープ１

[1293] 高温養生を受けたスラグセメントモルタルの乾燥収縮に関する研究：炭酸カルシウム微粉末，セッコウ，収縮低減剤の影響

HABIRUN Asiya Nurhasanah¹, 浅本晋吾¹, LUAN Yao¹, 高橋恵輔² (1.埼玉大学 2.香川大学)

キーワード：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.