| 摘要 |
Thixotropy is measured by analyzing a sample in two different states. First, the total load to break thixotropic set is determined. To achieve maximum rheopectic set before breaking the thixotropic set, a viscosimeter-type apparatus is loaded by impacting steel balls into a fixed container at regular intervals. Second, the minimum load to initiate flow is determined by vibrating the sample to break thixotropic set, while simultaneously loading a fixed container in the above manner. The two tests provide values for (1) the total load to shear the set sample, and (2) the minimum load to initiate flow. Algebraically, these values are combined into a thixotropic index.
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