Gypsic and petrogypsic horizons occur in large areas of arid and semi-arid regions of the world. The occurrence of gypsum in soils is considered a key feature by most soil classification and mapping systems, that have coined specific names for these soils and horizons. However, the current methodology for description and definition of gypsic and petrogypsic horizons in the two most popular soil...

Investigation of the effect of using nanomaterials for improving and Stabilizing the gypseous soil was carried out using laboratory works. The gypseous soils were collected from a site of intake in Bahar Al-Najaf and mixed with two types of nanomaterials (Nano-silica and, Nano-clay) where the nanomaterials were added in small amounts as a percent of the dry weight of the soil sample. Tests to d...

Abstract Gypseous soil is located in dry and semi-arid areas unsaturated conditions this type of becomes a serious issue for engineering geotechnical when it wet. the properties structure change, exposed to soaking leaching, because gypsum dissolved water causing rupture bonds that hold particles together reduction suction power holds them together. Large settlements potential collapse will hap...

Gypsum-exclusive species (gypsophiles), are restricted to gypseous soils in natural environments. However, it is unclear why gypsophiles display greater affinity gyspeous than other soils. These plants edaphic endemics, growing alkaline with high Ca and S. Gypsophiles tend show higher foliar S, lower K and, sometimes, Mg non-exclusive gypsum species, named gypsovags. Our aim was test if the uni...

The presence of gypsum in soil has a high effect on the mechanical and physical properties soil. This depends fundamentally type quantity existent present study attempts to improve gypseous using new pozzolanic material discovered as from attapulgite clay. It is called “High Reactivity Attapulgite” HRA. objective this investigate ability be moderate stabilizer used for treating was obtained one...

The dynamic response of foundation rest on collapsible soil in dry and soaked states is studied through wide experimental programmed. Gypseous from Tikrit governorate area was obtained subjected to various physical chemical analysis determine its properties. Steel rectangular footing (400x200x20) mm manufactured. machine fitted the footing, then model placed centrally over prepared layer steel ...