Lateritic Gravel Research Articles

Closure to “Lateritic Gravel Evaluation for Road Construction”

Closure to “Lateritic Gravel Evaluation for Road Construction”

Discussion of “Lateritic Gravel Evaluation for Road Construction”

Discussion of “Lateritic Gravel Evaluation for Road Construction”

Lateritic Gravel Evaluation for Road Construction

The influence of geology, topography and climatic conditions on the mode of formation of typical lateritic soil profiles have been investigated, with emphasis on conditions in Ghana, West Africa. The physical chemical mechanical and weathering characteristics of such gravels have been studied. Significant statistical correlations are developed between various physical properties and mechanical strength. In addition, very significant correlation exists between the ratio of oxides of silica to iron and the mechanical strength. No such correlation seem to exist between the ratios of silica to alumina or silica sesquioxide, indicating that iron oxide plays a dominant role in the development of mechanical strength in laterites. On the basis of field studies and laboratory data, lateritic gravels have been divided into four groups, each group having a range of physical, chemical and mechanical properties which corresponds with the performance of the gravels in the field.

A New Palæolithic Find in Tapti Valley, Khandesh, India

IN 1863 Foote reported a first palaeolith from laterite gravels occurring at Pallavaram, near Madras. This find proved the presence of early man, maybe in the Pithecanthropoid or Neanderthaloid stage in India1.