3 composite samples were taken from each area from 3 different sites, and a number of physical and chemical analyzes were performed, and the results were linked to the climate factors, mother rock and fertilizing treatments.
In present investigation attempt has been made to study the bearing capacity and settlement
characteristics of footings subjected to central vertical load and resting on layered soil with
the help of model tests and with the application of finite e
lement method (FEM) to
calculate bearing capacity of a strip footing on one-layer and two-layer soil (Sand and
Clay). To investigate the effect of various parameters on soil bearing Capacity a
commercial finite element software, PLAXIS, has been used. Soil profile contains two soil
types including sand and clay. Soil behavior is represented by the elasto-plastic Mohrcoulomb
(MC) -model. For a one-layer case, the bearing capacity also is calculated which
has a good agreement with theoretical equations. For a layered soil, soft-over strong soil,
parametric study was carried out. It is concluded that the bearing capacity of footing
decreases as the height of clayey soil increases whilst the displacement under footing
increases. There is a critical depth where the stronger bottom layer does not affect ultimate
bearing capacity and failure mechanism of footing.
In this research an experimental study has been carried out
to investigate the enhancement of Bosra Alsham´s soil (120 km
south Damascus) by using crushed glass wastes additives by using
experimental approach. The soil samples were taken from Bosr
a
(2m underground surface), which is classified as highly plastic
clayey soil CH according to unified classification.
This research was conducted in 2016c, at the Zahid Western
Research Station in Akkar Plain region of Tartous Governorate, the
objective of this research is study the effect of non-conventional
organic waste (compost of garbage, sewage sludge) and
cow
manure on the physical properties of clay soil in the region. Wastes
was added to the soil at a rate of (0 - 10 - 20 – 30) t/ha, in order to
determine the effect of the difference in the quantity added on
physical properties of the soil and peanut productivity.
In this research, measurement of radioactivity of bismuth-212 in the soil of the
village of the Ien Lailonin- Alhafah area- Latakia city using gamma spectrometry to make
sure the radioactive content to soil, and was measuring the radioactivity of b
ismuth-212
using the alpha spectroscopy, after digestion 10g of soil using nitric acid and sulfuric acid
concentrated, and then spontaneaous deposition into high purity a silver disc.
the results show that: the radioactivity of bismuth-212 (1,48Bq) using gamma
spectrometry and (2,05Bq)using the alpha spectroscopy It is within the range allowed
international border ,taking into account the errors in measurements.
Soil water erosion is one of the most important factors of soil
degradation. Soil erosion is a process that causes loss of big
amounts of nutrients and organic matter from the topsoil layer and
pollutes the surface water bodies. The USDA- WEPP (Wa
ter
Erosion Prediction Project erosion model) represents a new
generation technology for estimating soil loss by water erosion and
sediment delivery from hillslopes and small watersheds. The main
purpose of this study was evaluating the capability of WEPP model.
Being critical, the stability of clayey soil, is a priority for the
civil engineer in constructions of roads and buildings. This
experimental study comes in the context of examination of the
effectiveness of menial stabilizers. Lime (L), Natural P
ozzolana
(NP), and Combinations of both, were examined to enhance the
characteristics of compaction, consistency and to restrict the
shrinkage behavior of clayey soil.
this search has studied to know the effect of addition of three
resources (cows, sheep and poultry) and five levels (0, 7.5, 15.0,
22.5, 30.0) T/h, in some physical properties of soil, and some
characteristics of wheat, class Sham- 4. soil was sel
ected from (0-
30) cm of Ayash village in Dier AZ zour - sandy soil texture. The
experiment carried out in a pot capacity (9) kg using a (RCD) with
three replications.
Earthmoving is the process of moving and processing soil from one location to another to alter an existing land surface into a desired configuration. Highways, dams, and airports are typical examples of heavy earthmoving projects. Over the years, con
struction managers have devised ways to determine the quantities of material to be moved from one place to another. Various types of soil (soft earth, sand, hard clay, …, etc.) create different level of difficulty of the problem. Earthmoving problem has traditionally been solved using mass diagram method or variety of operational research techniques. However, existing models do not present realistic solution for the problem. Multiple soil types are usually found in cut sections and specific types of soil are required in fill sections. Some soil types in cut sections are not suitable to be used in fill sections and must be disposed of. In this paper a new mathematical programming model is developed to find-out the optimum allocation of earthmoving works. In developing the proposed model, different soil types are considered as well as variation of unit cost with earth quantities moved. Suggested borrow pits and/or disposal sites are introduced to minimize the overall earthmoving cost. The proposed model is entirely formulated using the programming capabilities of VB6 while LINDO is used to solve the formulated model to get the optimum solution. An example project is presented to show how the developed model can be implemented.
The Mediterranean region is world’s leading olive growing area. A large amount of
liquid waste results from olive oil extraction these wastewaters have a different effects an
environmental . In this study, four fungal isolates from Samples of soil
Polluted by olive
mill wastewater ,this isolates follow to several types from deuteromycetes, they are follow
to this types : Humicola sp., paecilomyces javanicus, Aspergillus terreus, Aspergillus
flavus. They isolated them on tow media (PDA, CzA) and identify them on colony
character ,Biometric and compare them with reference studies.
