| 封培然,宋利丽.再论水泥强度[J].水泥工程,2024,37(5):1-4 |
| 再论水泥强度 |
| Further discussion on cement strength |
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| DOI： |
| 中文关键词: 水泥强度,守恒,内能,活度 |
| 英文关键词: cement strength,conservation,internal energy,activity |
| 基金项目: |
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| 中文摘要: |
| 讨论水泥强度的极限依然十分重要，其涉及不同龄期水泥抗压强度的高低和耐久性。通过从材料微观到宏观性能参数的分析，尝试建立一个新的强度预测模型，该模型期望使用动态的数据分析水泥自身强度的发展规律，研究结果显示单位体积的水泥的强度是存在极限的，其与水泥自身的活度有关；不同时间的水泥强度存在差异，但是其具有的能量是守恒的。过度地追求水泥早期强度牺牲了后期的增长率，这对水泥的耐久性是一种挑战；即使具有相同强度的两种水泥也无法保证后期拥有相同的安全性。水泥强度是其内能对环境做的功，其他胶凝材料与水泥有类似的结论。 |
| 英文摘要: |
| It is still very important to discuss the limit of cement strength, which related to the compressive strength and durability of cement at different ages. Through analyzing of material performance parameters from micro to macro, a new strength prediction model is tried to establish, which expected to use dynamic data to analyze the development law of cement's own strength. The research results showed that there is a limit to the strength per unit volume of cement, which is related to the activity of cement itself. The strength of cement varies at different times, but its energy is conserved. Excessive pursuit of cement early strength was at the expense of the later growth rate, which is a challenge to the durability of cement. Even two types of cement with the same strength are not guaranteed to have the same safety later. The strength of cement is the work done by its internal energy to the environment, and other cementing materials have similar conclusions with cement. |
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