Septic systems can be a potential source of phosphorus (P) in groundwater and contribute to eutrophication in aquatic systems. Our objective was to investigate P transport from two conventional septic systems (drip dispersal and gravel trench) to shallow groundwater. Two new in-situ drainfields (6.1 m long by 0.61 m wide) with a 3.72 m2 infiltrative surface were constructed. The drip dispersal ...

In recent years, the rationalization of concrete mix ratios which batches equal volumes sand and gravel in building projects has been gaining grounds Cameroon construction industry. The main objective this study is therefore to investigate if produced with rationalized ratio can be adopted as conventional terms minimum required compression strength for buildings. Specifically work compared 350 ...

Thermal resistance of the structural layers a road is one important parameters that determine choice technical solutions design in permafrost area. The purpose this research quantitative assessment influence extent to which pores gravel bedding are filled with ice or sand on thermal conductivity an ice-gravel sand-gravel mixture. Lichtenecker formula was used calculate coefficient three-compone...