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Abstract In recent years, research on the use of solar thermal power generation for energy decarbonization has made significant progress. Research on solar-driven calcination of cement clinker has also been initiated. However, the calcination of cement clinker requires continuous heating, and solar energy supply is highly influenced by weather. Intermittent solar energy interruptions, such as those caused by cloud cover, can disrupt the heating process. To investigate the impact of short-term solar interruptions on the performance and calcination process of cement clinker, the study used a high-temperature muffle furnace to simulate intermittent heating, mimicking the effects of temporary solar energy shortages. The results indicate that the performance of clinker fired by short-term interruption of heating is better than that of uninterrupted clinker. In particular, the interruption temperature has the most obvious effect in the solid-phase reaction stage. Quantitative XRD analysis of the clinker confirms that intermittent heating followed by resumed calcination promotes the formation and development of C3S, with its content increasing by up to 25.13%. Additionally, the morphology and distribution of the C3S crystals were improved, hydration products were enhanced, and the 28-day compressive strength of the cement increased by up to 16.1%.
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Published: 03 March 2025
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2025, Vol. 0 
