二元有机酸多孔基体夊合相变储能材料的制备及性能研究-Li-.PDF

International Conference on Material Science and Application (ICMSA 2015) Mechanical Activated Fly Ash and Mechanism Li-Guang XIAO1,a, Bo JIANG1,b 1School of Materials Science and Engineering, Jilin Jianzhu University, Changchun 130118,China a b xlg627@163.com, 478048400@ Keywords: Fly Ash, Mechanical Activation, Microscopic Analysis. Abstract. When the replacement of cement and fly ash strength 28d 3d have the same amount of 10% of the rise. Experimental Comparison of mechanical properties of fly ash by different grinding time when grinding 15min replace an equal amount of 10% of cement, mortar best. And draw 15min when grinding through microscopic analysis, the activity of fly ash to be excited, active SiO2 reaction was complete. Thus, 15min short time grinding activation can save costs while improving the utilization of fly ash, improve the strength of concrete. Test Raw Materials (1)Cement: The Jilin Yatai Group production of Tripod Deer brand ordinary portland cement. Its physical properties are shown in table1: Tab.1 Tripod Deer brand P.042.5R cement physical properties Project National Standard Found Degree of fineness( ％) R+8μm ≤10.0 ％ 0.8 Setting time(h) Initial setting ≥0:45 02:00 Final setting ≤10:00 03:00 Stability Reye law ≤5.0 Qualified (2)Sand: coarse, medium and fine quartz sand of different particle sizes.