硫铁铝酸钡钙水泥系列矿物的研究  

Study of Calcium Barium Sulfo-Ferritealuminate Series Minerals

作　　者：潘正昭[1] 刘清[1] 叶正茂[1] 常钧[1] 

机构地区：[1]济南大学材料科学与工程学院,山东济南250022

出　　处：《建筑材料学报》2008年第4期397-402,共6页Journal of Building Materials

基　　金：国家自然科学基金资助项目(50502017);山东省中青年科学家奖励基金资助项目(2005B504005)

摘　　要：以硫铝酸钡钙水泥的主要矿物C2.75B1.25A3S^-（1．75CaO·1．25BaO·3Al2O3·CaSO4）为基础，用分析纯化学试剂Fe2O3对C2.75B1.25A3S^-中的铝离子进行取代，合成了硫铁铝酸钡钙水泥系列矿物，并研究了该系列矿物的强度发展规律．设计该矿物的化学式为1．75CaO·1．25BaO·（3-X）Al2O3·XFe2O3·CaSO4，研究表明，当X值取为0．5～1．7时，试样的抗压强度都是令人满意的，但当X值超过1．8时试样强度开始下降；当X值取1．5时试样强度最高．其1．3,28d抗压强度可分别达到64．00，77．75．86．62MPa．Based on C2.75B1.25A3S^-（1.75CaO·1.25BaO·3Al2O3· CaSO4）, which are the dominant minerals in Ba-bearing sulfoaluminate cement, the calcium barium sulfo-ferritealuminate series of new cement minerals were synthesized by a different equivalent of Fe^3＋ , replacing for Al^3＋ ions. With the help of differential scanning calorimetry/thermal gravimetric（DSC/TG）, the optimum burning temperature was discussed. The composition and structure of the clinker minerals were studied by means of X-ray diffraction（XRD） analysis and scanning electron microscope （SEM）. The results indicate that the size of the crystal formed in above condition is about 4- 5 μm in diameter, the molar composition of Fe^3＋ ions is from 0.5 to 1.7, and optimum composition is 1.5. At the optimum level, the compressive strength of the minerals after 1, 3 and 28 d can reach 64.00, 77.75, 86.62 MPa respectively.

关 键 词：硫铁铝酸钡钙 硫铝酸钡钙水泥 氧化铁 强度 

分 类 号：TQ172.18[化学工程—水泥工业]