石灰土刚性较大,它具有良好的整体性,作为黑色表面处治路面的底层是很好的。但是石灰土也有其一定的缺点,主要是容易产生裂缝。裂缝的防止,除施工时注意质量要求严格掌握操作工艺外,还可采取预留缝的办法,在1964年河北保磨线施工中是采用人工锯缝灌油砂,其法如下: 锯缝工具用半圆锯(如图示),用这种工具锯 Lime soil is more rigid and has good integrity. It is good as a base for treating black pavement surfaces. However, limestone also has its own drawbacks, mainly prone to cracks. Crack prevention, in addition to pay attention to the quality of the construction requirements strictly control the operation of technology, but also to take the way to reserve the seam in 1964, Hebei Bao line construction is the use of artificial sawing seam oil sands, its method is as follows: Saw sewing tools Use a semicircle saw (as shown) with this tool saw