Volume Stability of Cement Paste Containing Limestone Fines

The common cause of cracking in cement paste is shrinkage due to different reasons, such as loss water and chemical reactions. Incorporating limestone fines (LF) a replacement can affect the paste. To examine this effect, five mixes were prepared with 0, 5, 10, 15 20% LF water-to-binder ratio (w/b) 0.45. Four volume stability tests conducted for each paste: chemical, autogenous drying expansion. Chemical was tested hour first 24 h thereafter every 2 days total period 90 days. shrinkage, expansion monitored until results showed that replacing 15% enhanced However, found increase between 0 10% decline sharply at LF. Drying content. Expansion exhibited little variation an above These are discussed terms formation hydration products self-desiccation hydration.