基于磷酸镁水泥的植物茎秆增强混凝土试验研究

Experimental Investigation on Green Concrete Using Magnesium Phosphate Cement(MPC)and Rape Stalk

采用磷酸镁水泥(MPC)、粉煤灰和油菜茎秆制备新型绿色混凝土,探讨了该混凝土作为保温隔热墙体材料的可行性,并讨论了油菜茎秆的掺量和尺寸对混凝土性能的影响,测试了所制备的植物茎秆增强混凝土的表观密度、抗压强度和导热系数.结果表明:所制备的植物茎秆增强混凝土可以满足承重和非承重墙体材料的技术要求;油菜茎秆的多孔隙特征保证了该绿色混凝土具有优异的保温隔热特性;与硅酸盐水泥和石灰等其他胶凝材料相比,磷酸镁水泥更适宜制备植物茎秆增强混凝土.

An investigation on a new material composed of magnesium phosphate cement（MPC）, fly ash, and rape stalk was presented. The main goal was to evaluate the viability of using this new material as an insulation material for buildings. Several composites with different concentrations and rape stalk sizes were prepared. The density, compressive strength, and thermal conductivity of the material were measured. Experimental results show that the proposed MPC rape stalk concrete possesses required properties /or production of lightweight concrete for structural and non-structural applications. The physical properties of the rape stalk indicate that it is promising for producing plant concrete. Results also indicate that MPC might be a better cementitious material for producing plant aggregate concrete compared with Portland cement or lime.