In this study, the macro properties (residual compressive strength), meso properties (mesoscopic images), and micro properties (reaction products and pore structures) of paste specimens with various limestone and calcined clay contents at elevated temperatures (20, 300, 550, and 900 °C) are experimentally investigated. According to the experimental results, (1) the strengths of all samples increase at 300 °C, while those of the LC³ ternary blended pastes increase more significantly because of the formation of katoite and the further hydration of binders. After the treatments at 550 and 900 °C, the reduction in the strengths of the LC³ samples is greater than that of the plain paste. (2) With further increasing temperature, all samples generate more meso cracks. (3) At 900 °C, a large gehlenite crystalline phase is formed in the samples with calcined clay. In summary, the microscopic explanation for the macroscopic and mesoscopic properties of LC³ paste at elevated temperature is investigated.

在这项研究中，在高温（20、300、550，和900°C）进行实验研究。根据实验结果，（1）所有样品的强度在300°C时都会增加，而LC ³三元共混浆料的强度则由于形成了钙矾石和粘合剂进一步水合而显着增加。在550和900°C下处理后，LC ³的强度降低样品大于纯浆。（2）随着温度的进一步升高，所有样品都会产生更多的细观裂纹。（3）在900°C下，经煅烧的粘土样品中会形成大的菱沸石晶相。总之，研究了高温下LC ³胶的宏观和介观性能的微观解释。