The accurate measurement of effective absorption capacity is crucial for highly absorptive materials when they are used within cement-based materials. In this study, a method for examining effective absorption capacity using isothermal calorimetry is reviewed and investigated in detail to accommodate different circumstances. Specifically, the effect of different pore structures and water-to-cement ratios in determining effective absorption capacity is experimentally examined using activated carbon fibre and powdered activated carbon. The results suggest that the method may be suitable for porous materials with micropores but not suitable for those with mesopores. Also, the results indicate that the effective absorption capacity value can change with the water-to-cement ratio used. These findings can be used to find the effective absorption capacity of highly absorptive materials more accurately using the isothermal calorimetry method.

中文翻译：

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等温量热法测定的有效吸收能力：孔结构和水灰比的影响

当将高吸收性材料用于水泥基材料中时，有效吸收能力的准确测量至关重要。在这项研究中，对使用等温量热法检查有效吸收容量的方法进行了综述和详细研究，以适应不同的情况。具体地，使用活性炭纤维和粉末状活性炭，通过实验检查了不同的孔结构和水灰比对确定有效吸收能力的影响。结果表明该方法可能适用于具有微孔的多孔材料，但不适用于具有中孔的多孔材料。而且，结果表明有效吸收容量值可以随所使用的水灰比而变化。