In this study, the physicochemical properties of granitic rocks subjected to quenching cycles were studied experimentally. Four granites of similar mineralogy but with different degrees of initial weathering (porosity between 1 and 6%) were slowly preheated at two peak temperatures (200 and 400 °C) and then quenched 35 times.

To study the effect of thermal cycling on the physical properties, non-destructive tests were used such as water porosity, capillary water absorption tests, P- and S- wave propagation velocities, nuclear magnetic resonance relaxometry, and X-ray micro-tomography. Chemical analysis of the granites was performed using X-ray fluorescence, which provided information on the major and trace elements. Water-granite interactions were followed using inductive plasma mass spectrometry (ICP-MS).

The variation of all the measured parameters indicates the creation of cracks with thermal fatigue. The porosity, water uptake, size, and volume of cracks increased while P- and S- wave velocity and Young's modulus decreased. At 200 °C, the changes were progressive up to ten cycles, from which the stress threshold was reached and only small readjustments took place. At 400 °C, the greatest damage was observed during the first five cycles. These changes were a direct consequence of the propagation of the microcracks induced by the strong gradient during the quenching tests. For both temperatures, the changes depended on the initial weathering conditions of the granites. Initially, weathered granites showed crack development or crack closure during quenching, meanwhile the damage on the sound rocks was characterized by the creation of intragranular microcracks.

The analysis of the experimental fluids showed enrichment in K, Na and Ca in the solution as consequence of the dissolution of K-feldspar, plagioclase and the degradation of mica and clays, independently of the physical and mechanical modifications.

在这项研究中，实验研究了经受淬火循环的花岗岩的物理化学性质。四种矿物学相似但初始风化程度不同（孔隙率在 1% 和 6% 之间）的花岗岩在两个峰值温度（200 和 400 °C）下缓慢预热，然后淬火 35 次。

为了研究热循环对物理特性的影响，使用了非破坏性测试，例如水孔隙率、毛细管吸水率测试、P 波和 S 波传播速度、核磁共振松弛法和 X 射线显微断层扫描。使用 X 射线荧光对花岗岩进行化学分析，可提供有关主要和微量元素的信息。使用电感等离子体质谱法 (ICP-MS) 跟踪水-花岗岩相互作用。

所有测量参数的变化表明热疲劳裂纹的产生。孔隙率、吸水量、尺寸和裂缝体积增加，而纵波和横波速度和杨氏模量降低。在 200 °C 时，变化逐渐增加到 10 个周期，从这个周期开始达到应力阈值，并且只发生了很小的调整。在 400 °C 时，在前五个循环中观察到最大的损坏。这些变化是淬火试验期间由强梯度引起的微裂纹传播的直接结果。对于这两种温度，变化取决于花岗岩的初始风化条件。最初，风化花岗岩在淬火过程中出现裂纹发展或裂纹闭合，

对实验流体的分析表明，由于钾长石、斜长石的溶解以及云母和粘土的降解，溶液中钾、钠和钙的富集，与物理和机械改性无关。