Road Construction in Black cotton soil
Road Construction in Black cotton soil
(OP)
I am working in sudan and we plan to construct Gravel road in Malakal area through labor intensive techniques.The problem is that the subgrade in this area is black cotton soil .I wanted to know what techniques we can apply for compaction of this soil





RE: Road Construction in Black cotton soil
f-d
¡papá gordo ain’t no madre flaca!
RE: Road Construction in Black cotton soil
Black Cotton swells in wet conditions and then contracts and forms huge cracks in the dry seasons.
Black Cotton Soil has lots of clay in it. Try Lime stabilization with a geo-grid. This will allow the stabilized sub-grade to "float" over the highly unstable natural soils beneath.
RE: Road Construction in Black cotton soil
RE: Road Construction in Black cotton soil
RE: Road Construction in Black cotton soil
Just a thought. . .
f-d
¡papá gordo ain’t no madre flaca!
RE: Road Construction in Black cotton soil
RE: Road Construction in Black cotton soil
RE: Road Construction in Black cotton soil
-Realignment of the road around the deposits
-Excavation of the clays and replacement with non-expansive backfill materials
-Limiting expansion of the clays by placement of surcharges of non-expansive fills over these deposits
-Precluding variations in moisture content of these clays so that the soils do not undergo alternate cycles of expansion and contraction
-Treatment of the clays with lime and/or cement which reacts with the clay minerals to produce stable compounds which are affected by moisture content changes and
-Utilization of geotextiles to isolate pavement layers from the expansive subgrade.You can choose on of the above said method to solve your problem.
RE: Road Construction in Black cotton soil