Role of the synthesis method on the microstructure and mechanical properties of metakaolin-based potassium geopolymers
Role of the synthesis method on the microstructure and mechanical properties of metakaolin-based potassium geopolymers
复制标题
合成方法对偏高岭土基钾地质聚合物微观结构和力学性能的影响
DOI：
--
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
S. Rossignol
中科院分区：
文献类型：
--
作者：
X. Gao;E. Joussein;P. Michaud;S. Rossignol
所采用的合成方法对材料抗压强度的发展有重要影响。这部作品
目的是研究合成温度(30℃和70℃)、养护条件(干燥和密封养护)和碱性对合成的影响
溶液(SC商用碱性溶液和SL实验室碱性溶液)对抗压强度的发展。
用热分析、孔隙率和微观结构表征了这些地质聚合物的微观结构。
并对结果进行了讨论。总孔隙率对抗压强度有负作用。在较低的合成温度下，由于较低的孔隙率和较小的孔径，显示出较好的抗压强度。由于具有较低的孔隙率，Sl地聚合物表现出比Sc地聚合物更好的抗压强度。研究还发现，当样品在干燥养护条件下固化时，反应受阻。
The synthesis method used has an important effect on the development of the compressive strength of a material. This work
aims to research the effect of synthesis temperature (30°C and 70°C), curing condition (dried and sealed curing) and alkaline
solutions (Sc commercial alkaline solution and Sl laboratory alkaline solution) on the development of compressive strength.
The microstructure of these geopolymers was characterized using thermal analysis as well as porosity and microscopic
observations, and the results were discussed. The total porosity was found to play a negative role on the compressive strength. Synthesis at a lower temperature demonstrated a better compressive strength due to the lower porosity and smaller pore sizes. The Sl geopolymers showed a better compressive strength than the Sc geopolymers due to their lower porosity. It was also found that the reaction was hindered when the samples were cured under a dried curing condition.