Shrinkage cracking of cementitiously stabilized layers (CSL) causes distresses in a pavement structure and decreases the pavement’s service life. Thus it is important to develop methods that can characterize properties of cementitiously stabilized materials (CSM) that lead to shrinkage cracking. Limited test methods are available to characterize the shrinkage behaviour of CSM. Shrinkage of CSM consists mainly of free drying shrinkage, autogenous shrinkage, and thermal shrinkage. This study developed new test methods that characterize these shrinkage properties of CSM and quantify the contribution of each of them to the shrinkage of CSM. The test methods were evaluated in the laboratory on both heavily and lightly stabilized materials and were found to be effective in quantifying the shrinkage behaviour of CSM. Results also showed that autogenous shrinkage strain is relatively small when compared with drying and thermal shrinkage. The temperature cycling test is effective in measuring the coefficient of thermal expansion of the CSM and can separate the thermal shrinkage from drying and autogenous shrinkage during a test.

水泥稳定层（CSL）的收缩开裂会导致人行道结构中的应力，并缩短人行道的使用寿命。因此，重要的是要开发出能够表征导致收缩裂缝的胶凝稳定材料（CSM）特性的方法。有限的测试方法可用于表征CSM的收缩行为。CSM的收缩主要包括自由干燥收缩，自生收缩和热收缩。这项研究开发了表征CSM收缩特性的新测试方法，并量化了每种方法对CSM收缩的贡献。在实验室中对重度和轻度稳定的材料都进行了测试方法评估，发现该方法可有效量化CSM的收缩行为。结果还表明，与干燥和热收缩相比，自发收缩应变相对较小。温度循环测试可以有效地测量CSM的热膨胀系数，并且可以在测试过程中将热收缩与干燥和自发收缩区分开。