Gypsum is a soluble material, and it one of the problematic components in soil west Iraq. Al-Najaf governorates Iraq which suffers from gypsum content different levels. The city mainly sand-sized particles bonded by percentages gypsum. main problem this component dissolution upon wetting process. This paper investigates effect decreasing matric suction (wetting) on deformation under specific st...

This paper elucidates the methodology of applying artificial neural network model (ANNM) to predict the percent swell of calcitic soil in sulphuric acid solutions, a complex phenomenon involving many parameters. Swell data required for modelling is experimentally obtained using conventional oedometer tests under nominal surcharge. The phases in ANN include optimal design of architecture, operat...

The geotechnical behaviour of expansive clay soils is investigated by looking into the geomorphologic, geological and climatic conditions and mineralogical composition of the soils in the study area. The geotechnical results are linked with the performance of the foundation as well as structures. Since swell potential and swell pressure are key properties of expansive soils, the swell parameter...

In this study, a functional relationship between the solid particle density (ρs), void ratio e, and dry (ρd) of mechanically biologically treated (MBT) municipal waste (MSW) was examined. total, 60 specimens were tested with an air pycnometer device corresponding triplets (e, ρd,and ρs) values obtained. addition, long-term oedometer test allowed decomposition process also conducted. Based on ob...

Up to now, the effect of strain rate on adhesive bond shearing resistance stiff clay, which plays a fundamental role in constitutive modeling such kind soils, remains unclear. This paper aims experimentally investigate dependency clay. Both undisturbed and reconstituted overconsolidated samples Merville clay from Flanders region north France are prepared with different overconsolidation ratios ...

This paper critically compares the use of laboratory tests against in situ combined with numerical seepage modeling to determine hydraulic conductivity natural soil deposits. Laboratory determination used constant head permeability and oedometer on undisturbed Shelby tube block samples. The auger hole method Guelph permeameter were performed field. Groundwater table elevations deposits differen...