FIELD: road construction.
SUBSTANCE: invention can be used to strengthen the subgrade soil of railways during its construction, repair and reconstruction. Soil mixture for road construction comprises, wt.%: cement brand M300 3-7, silty sand 10, heavy clay soil with a high content of montmorillonite and plasticity number from 27 to 50 82-86, the rest is water.
EFFECT: increased strength, reduced swelling and frost heaving of heavy clay soil.
1 cl, 2 tbl
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