本研究探討石灰石水泥在添加強塑劑下之流變行為，試驗內容以音叉式黏度儀與迷你坍度錐來探討石灰石水泥漿體的黏度和坍流度隨水化時間與強塑劑劑量之關係，最後並藉由強塑劑吸附與離子濃度的變化來說明漿體的流變行為。試驗結果發現，未添加強塑劑時，添加石灰石粉末提高漿體的黏度且該黏度隨著水化時間的增加而增加;漿體的坍流度則隨著石灰石粉末取代量的增加及水化時間而降低。當使用強塑劑時，漿體的黏度隨著強塑劑劑量與石灰石粉末取代量的增加而降低並隨著水化時間增加而增加;漿體的坍流度隨著強塑劑劑量與石灰石粉末的增加而增加並隨著水化時間的增加而降低。強塑劑的吸附試驗結果說明，漿體的流變行為係受其吸附行為所影響。當石灰石取代量越高時，強塑劑的吸附量會增加，同時發現其中有吸附轉移的趨勢。當水泥用量減少時，漿體孔隙水溶液中的總離子濃度降低故造成強塑劑的吸附量增加。

This study explores the rheogoical behaviors of the cements in the presence of superplasticizers using the vibro-viscometer and the mini-slump cones. The viscosities and the mini-slumps of the cement pastes were related to the hydration time and superplasticizer dosages. The adsorption of the superplasticizers and ion concentrations in the pastes were measured to explain those changes in the rheological behaviors. Results showed that the viscosities of the plain pastes were increased by both the limestone addition and the hydration time. The mini-slumps were decreased by the limestone addition and the hydration time. In the presence of superplasticizers, the viscosities of the pastes were decreased by the limestone addition but increased with the hydration time. The mini-slumps were increased by the limestone addition but decreased with the hydration time. Results also showed that the viscosities and the mini-slumps were found associated with the adsorption, which was increased by the limestone addition. Further results showed that the increased adsorption was attributed to the decreases in the ion concentrations. With higher limestone addition, less cements were used and the limestone did not hydrate most.

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