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首页> 美国卫生研究院文献>Materials >Metakaolinite Phosphate Cementitious Matrix: Inorganic Polymer Obtained by Acidic Activation
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Metakaolinite Phosphate Cementitious Matrix: Inorganic Polymer Obtained by Acidic Activation

机译：偏高岭石磷酸盐水泥基体：通过酸性活化获得的无机聚合物

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摘要

This work aims to study an aluminosilicate phosphate cementitious matrix. The cementitious matrix was studied on paste samples. The synthesis of metakaolinite phosphate cement (MKPC) was investigated using calorimetric techniques. A systematic study was performed by emphasizing a broad range of Al/P molar ratios, covering the different behavior of the material to the extremes, as well as the optimum composition. X-ray diffraction and scanning electron microscopy revealed that the final structure was mainly an amorphous network, albeit with some non-reacted phases. The compressive strength was studied on mortars using a cement/sand ratio of 1:3. MKPC specimens with Al/P ratios close to 1/1 showed optimal behavior. MKPCs with Al/P ratios above 1/1 were characterized by high porosity and low strength, whereas MKPCs with Al/P < 1 contained an excess of phosphates. The influence of the Al/P molar ratio on compressive strength was also studied, reaching a maximum of 68 MPa for the optimum composition. Based on the results, MKPC may be a promising candidate for construction purposes.
机译：这项工作旨在研究一种铝硅酸盐磷酸盐水泥基体。在糊状样品上研究了胶结基质。使用量热技术研究了偏高岭土磷酸盐水泥（MKPC）的合成。通过强调广泛的Al / P摩尔比进行了系统的研究，涵盖了材料到极限的不同行为以及最佳的组成。 X射线衍射和扫描电子显微镜显示，最终结构主要是无定形网络，尽管有一些未反应的相。在水泥/砂比为1：3的砂浆上研究了抗压强度。 Al / P比接近1/1的MKPC标本显示出最佳性能。 Al / P比大于1/1的MKPC具有高孔隙率和低强度的特征，而Al / P <1的MKPC含有过量的磷酸盐。还研究了Al / P摩尔比对抗压强度的影响，对于最佳组成，最大抗压强度为68 MPa。根据结果​​，MKPC可能是有前途的候选建筑。

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