M R Arefin’s scientific contributions

Zonation based on soft soil is very much significant for the proper identification of soft soil improvement techniques on the specific/defined location of Bangladesh. In this paper, about one thousand boreholes have been used to find the Standard Penetration Test (SPT) values around different locations of Bangladesh. Out of these about one thousand boreholes, four hundred and seventy have been used to identify soft clay soil layer formation. Three Geographic Information system (GIS) maps have been proposed by ArcView-GIS-2010 software as follows: a) Soil parameters information map b) SPT (N) value-based map (SPT 1-5) and c) Soft clay layer thickness maps. Bangladesh is on the delta formed by the three main rivers the Meghna, the Ganges, and the Brahmaputra. These rivers originate outside the country's national boundary and make up the Meghna-Ganges-Brahmaputra river system. Therefore, availability of soft clay is higher in the southern part of the country and the riverside areas.

Zonation based on soft soil is very much important for selecting soft soil improvement techniques on the specific location of Bangladesh. In this research total 1000 boreholes have been conducted for SPT test around Bangladesh. From these boreholes 470 boreholes have been selected for soft clay soil layer formation. Three GIS maps have been created by Arc GIS 2010. One for soil parameters information and second is for SPT N value from 1 to 5. Another is for the soft clay layer thickness. The major part of Bangladesh is on the delta formed by the three major rivers brahmaputra, Jamuna and meghna. These rivers and many of the country's other minor rivers originate outside the national boundary of the country and make up the Jamuna-Brahmaputra-Meghna river system. For this reason, availability of soft clay is high in southern part of the country and in the riverside locations. This paper has proposed three GIS based map for which will be useful for selecting soft ground soil improvement techniques in the different regions of Bangladesh.