本文介绍了以对苯二酚为添加剂的缓效尿素中缩二脲含量分析方法的试验研究情况。
The analysis method for biuret content in long-efficacy urea using hydroquinone as an additive is studied and tested.
干缩试验结果表明：随着失水率的增加，二灰稳定土的干缩系数先增大后减小。
Dry-shrink tests show that the dry-shrink coefficient firstly increases, then decreases with the increment of the increment of the water loss rate.
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