论文部分内容阅读
研究了玉米秸秆掺量对氯氧镁水泥基建筑复合保温材料(C-MOC)力学性能、耐水性能、密度及导热系数的影响,通过XRD、SEM对C-MOC中氯氧镁水泥微观形貌和物相进行了分析。结果表明,当玉米秸秆掺量为20%时,C-MOC的性能最佳,密度为912 kg/m3,导热系数为0.236 W/(m·K),吸水率为33.64%,软化系数为0.61,28 d抗压强度为9.16 MPa,28 d抗折强度为5.72 MPa。玉米秸秆渗出液改变了氯氧镁水泥物相及形貌,由5·1·8相的针状结构转变为糖、酯包裹氯氧镁水泥的片状结构。
The effect of corn straw content on the mechanical properties, water resistance, density and thermal conductivity of CMOC composite insulation material (C-MOC) was studied. The micromorphology of magnesium oxychloride cement in C-MOC was studied by XRD and SEM. We analyzed the matter and phase. The results showed that when the content of corn straw was 20%, the performance of C-MOC was the best, the density was 912 kg/m3, the thermal conductivity was 0.236 W/(m·K), the water absorption was 33.64%, and the softening coefficient was 0.61. The compressive strength was 9.16 MPa on 28 d and the flexural strength was 5.72 MPa on 28 d. The corn straw leaching solution changed the phase and morphology of the magnesium oxychloride cement, and changed from the needle structure of 5·1·8 phase to the sheet structure of sugar and ester-encapsulated magnesium oxychloride cement.