list the materials require for building roads and buildings and probable sources
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Soil constitutes the primary material for the foundation, subgrade, or even the pavement (for low-cost roads with low traffic in rural areas).
Materials Used for the Construction of Roads: Methods, Process, Layers and Road Pavement
•Soil.
•Stone Aggregates.
•Bituminous Materials.
•Cement, Cement Mortar and Cement Concrete.
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answer given below
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Materials Used for the Construction of Roads: Methods, Process, Layers and Road Pavement
Soil: Soils can be studied effectively if they are classified according to certain principles into a definite system. ...
Stone Aggregates: ...
Bituminous Materials: ...
Cement, Cement Mortar and Cement Concrete:
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