The Phoenix is a new test method that can measure the water-to-cementitious ratio (w/cm) in fresh concrete in 15 min by evaporating the mixing water and scaling the binder content. This work will aim to investigate how the results of the test changes with time after mixing and also the length of time the sample spends in the furnace. The time after mixing is important as the water in the mixture begins reacting with the binder as soon as mixing starts. Also, as materials are stored in the furnace the high temperatures may cause the materials to decompose and this would again change the results of the test. These are important questions that limit the timing in the test method and also provide insight into the early reactions of Portland cement with water. This work uses isothermal calorimetry, w/cm testing over time, thermogravimetric analysis, and degree of hydration tests to establish reasonable limits for the test method.

Phoenix 是一种新的测试方法，它可以通过蒸发混合水和对粘合剂含量进行缩放，在 15 分钟内测量新拌混凝土中的水胶比 (w/cm)。这项工作的目的是研究混合后测试结果如何随时间变化以及样品在熔炉中停留的时间长度。混合后的时间很重要，因为一旦混合开始，混合物中的水就开始与粘合剂反应。此外，由于材料储存在炉中，高温可能会导致材料分解，这将再次改变测试结果。这些重要的问题限制了测试方法的时间，也提供了对波特兰水泥与水的早期反应的深入了解。这项工作使用等温量热法、w/cm 随时间的测试、热重分析、