Contribution to Comparative Study of Physical-Chemical Characteristics of Diack Basalt and Bandia Limestone for Use in Railway Engineering

Abstract

This paper presents a comparative study of Physical-Chemical characteristics of Limestone and Basalt (from Senegalese quarries). First, chemical tests show that Basalt is richer in silica 51.59% versus 2.84% for Limestone. Basalt is made up of silica minerals and essentially carbonated minerals with a CaO percentage of 50.05%. Chemical results also show that Basalt is richer in iron 12.71% versus 0.44% for Limestone. Finally, they revealed a fire loss of 40.91% for Limestone and 2.44% for Basalt. Second, physical analysis results show that Diack Basalt has the best characteristics with a flattening coefficient of 5% between 5% and 20%; the percentage of pollutants is 0.36% less than 1%; the Los Angeles coefficient is 12.21% below 15, while Bandia Limestone gives a flattening coefficient of 3%; the Los Angeles coefficient of 40.17% and the percentage of pollutant (2.4%) well above 2%. It is noted that the percentage of Limestone pollutant is too high. These important results show the net advantage of Basalt compared to Limestone in terms of physical-chemical characteristics.

Coupling Discriminating Statistical Analysis and Artificial Intelligence for Geotechnical Characterization of the Kampemba’s Municipality Soils (Lubumbashi, DR Congo)

“…The municipality of Kampemba consists of the Kafubu, Bel-Air 1 and 2, Bongonga, Industriel, Kigoma and Kapemba quarters, and has a total area of 9,741,644.63 m 2 . This municipality is part of the square degree of the city of Lubumbashi city between the parallels 11˚36'5.60'' and 11˚44'44.91'' of Northing (South Latitude), and the meridians 27˚29'59.31'' and 27˚33'19.57'' of Easting (East Longitude).…”