路基施工中,控制路基土含水量的目的往往只在于保证路基压实度,实际上,能保证路基压实度的含水量变化幅度,即最佳含水量的正、负增量范围是较大的。施工时,在这个范围内,使最佳含水量的增量保持适当的负值,则可以不仅满足压实度要求,还能提高路基强度,进而达到减小路面厚度或延长路面使用寿命之目的。 Subgrade construction, the control of subgrade soil moisture content is often only to ensure subgrade compaction, in fact, to ensure subgrade compaction moisture content range, that is, the optimal water content of the positive and negative incremental range is larger of. During construction, within this range, keeping the increment of the optimum water content at an appropriate negative value can not only meet the compaction requirement but also improve the subgrade strength so as to reduce the thickness of the road surface or extend the service life of the road surface .