The lack of fine fractions in the expanded clay necessitates the addition of other aggregates. 膨胀性粘土缺乏细料部分，故必须添加其它骨料。
According to the experimental results, adding cement into the sands containing fine contents will significantly be enhanced the unconfined compression strength. 经由试验结果发现，添加水泥于含细料砂质土壤内并加以混合搅拌，对于剪力强度的提供有著明显的效果。
