Shrinkage & CreepⅠ

[1292] Effects of Calcined Clay and Limestone Powder as Supplementary Cementitious Materials on Shrinkage

Niraporn PORNSIRI¹, Shingo ASAMOTO¹, Keisuke TAKAHASHI², Warangkana SAENGSOY³ (1.埼玉大学 2.香川大学 3.Construction and Maintenance Technology Research Center, Sirindhorn International Institute of Technology, Thammasat University)

Keywords:calcined clay、limestone powder、shrinkage、supplementary cementitious materials、weight change

This study investigates autogenous and drying shrinkage of paste samples incorporating calcined clay (CC) and limestone powder (LP) as supplementary cementitious materials. The tested mixtures included binary and ternary blends with 30% replacement by CC and LP, alongside a cement mixture without CC as a control. The results indicate that mixtures containing CC exhibited greater autogenous shrinkage compared to the control, the shrinkage was increased by the addition of LP. Conversely, CC reduced drying shrinkage, resulting in lower values than those observed in the control mixture.