The major decision in construction process involves the selection of suitable site with best soil conditions, as structure resides in the soil. Most problematic soils like expansive soils hardly proved to be the best engineering subgrade profile for pavement constructions. Thus, this has undeniably led to the soil improvement options accompanying the reduction in resource depletion and solid wa...

In recent years, the nanoscale zero-valent iron (NZVI) particles have been used successfully for the degradation of hydrocarboncompounds and remediation of other pollutants. Nevertheless, as far as we know, there is no specific study on the improvement of thegeotechnical properties of contaminated soils with hydrocarbon compounds by NZVI. This study used NZVI particles to remove gasoil in a cla...

This study explores whether Thermomagnesium (TM), a by-product of Ni ore mining, is an efficient fertilizer for maize. The effects TM on soil pH, the supply Si and Mg to plants, carbohydrate metabolism, grain filling, yield were assessed in two simultaneous experiments performed greenhouse conditions. Five doses applied textures—clayey (0, 55, 273, 709, 2018 mg kg−1) sandy 293, 410, 645, 1260 k...

In this paper the use of the Hilbert-Huang Transform (HHT), for the decomposition and characterization of seismic ground response, is discussed. The HHT, integrated by the Empirical Mode Decomposition (EMD) and the Hilbert Transformation (HT), enables engineers to analyze non-stationary oscillation systems and to obtain more detailed intensity descriptions on time-varying frequency diagrams. Th...

This paper addresses the differences between two approaches of damping estimation in resonant column testing: Steady-State Vibration (SSV) and Free Decay (FVD) method, at small (<0.005%) to medium (0.07%) strain range. The tests were conducted on “two types reconstituted sands” clayey soils” different relative densities confining pressures. test results suggested use SSV method measurement FVD ...

The hydromechanical behavior of compacted clayey soils is significantly influenced by its microstructure. microstructural void ratio a key parameter that strongly associated with the state. objective this study to provide practical and reliable estimation approach for predicting evolution clay subjected wetting drying paths. In paper, 12 was investigated quantitatively using mercury intrusion p...