引用本文摘 要：以高吸水樹脂（SAP）為內養護水分蓄存載體，采用核磁共振法研究了內養護水分在水泥漿體中的釋放規律，探索了其對水泥漿體毛細負壓的影響以及參與水化的特征。結果表明，高吸水樹脂基內養護水泥漿體的0.1～6ms弛豫峰和32.7～200.9ms、231.0～1629.7ms弛豫峰分別由毛細水、內養護水產生；內養護水分的釋放始于水泥漿體水化加速期，內養護時間隨蓄水SAP摻量的增加而延長;釋放出的內養護水分降低了水泥漿體的毛細負壓，同時也促進了水泥漿體的水化；SAP僅控制的是內養護水分的釋放速率，內養護水泥漿體與直接增加相同額外水量的漿體后期水化程度相當。 Abstract: Based on super absorbent polymer served as carrier of internal curing water, release of internal curing water in cement paste was studied with NMR method, and its effect on capillary pressure of cement paste as well as characteristics of participation in hydration were analyzed. It was indicated from the results that 0.1 ~ 6ms relaxation peak was induced by capillary water, 32.7~200.9ms and 231.0~1629.7ms relaxation peak were induced by internal curing water in internal curing paste; the release of internal curing water started in the beginning of hydration acceleration period, and internal curing duration increased with the increase of dosage of SAP. The internal curing water released would not only reduce the capillary pressure, but also promote the hydration of cement paste. As SAP only controlled release rate of internal curing water, late hydration degree of internal curing paste was the same as that of the paste with adding equal additional water directly.
李享濤.高吸水樹脂基內養護水分在水泥漿體中的釋放及水化規律[J].混凝土與水泥制品,2017(7):1-5. LI X T.Release and Hydration Rules of Internal Curing Water for Super Absorbent Polymer in Cement Paste[J].China Concrete and Cement Products,2017(7):1-5.