Mahdi Khodaparast

Mahdi Khodaparast
University of Qom · Civil Engineering

About

26
Publications
9,860
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
104
Citations

Publications

Publications (26)
Article
One of the best methods for improving the tensile strength of soil, especially for stabilization of slopes and retaining walls, is to reinforce it using metal or polymer components. In the present experimental study, six soil slopes were reinforced with geotextiles at 1:30 scale. The footings were square-, rectangular-, or strip-shaped and were loc...
Article
Full-text available
Landslides can cause extensive damage, particularly those triggered by earthquakes. The current study used back propagation of an artificial neural network (ANN) to conduct risk studies on landslides in the area affected by the Manjil-Rudbar earthquake in Iran in 1990 (M = 7.7). Newmark displacement analysis was used to develop an earthquake-induce...
Book
Full-text available
Excavation designed using stress-based design method is sufficient for the induced stresses but in some cases does not guarantee the safety of the adjacent structures and their serviceability in exposure to the even slightest ground deformations. Vulnerability of the adjacent structures could be defined based on ground deformations as well as later...
Article
Nanotechnology is extensively used in engineering to improve systems, characteristics and standards. Various techniques can be used for soil improvement in road embankment and geotechnical engineering. The present study examined the effect of nano calcium carbonate (nano-CaCO3) on clayey sand soil using uniaxial and consolidation tests on specimens...
Article
The effect of nano-CaCO3 on the geotechnical properties of clayey sand (SC) soil was investigated. SC soil containing 10%, 20% and 30% clay and 0.3%, 0.7%, 1.1% and 1.5% nano-CaCO3 were cured for 7, 14 and 28 days and then subjected to uniaxial compression testing. The experimental results were analyzed numerically by the group method of data handl...
Article
There are different methods to identify dispersive soil and several studies have attempted to produce a reliable method for this goal. Some studies have shown incompatibility between field observations and laboratory test results, especially for a chemical criterion. In this study, the dispersivity potential of 328 soil samples having a broad distr...
Article
Understanding the cause of structural damage and loss caused by surface faulting rupture requires research on the fault rupture-foundation interaction and geotechnical mitigation methods. The present study investigated the interaction of reverse-faulting surface rupture and a foundation system comprising a mat foundation and micropiles. The effects...
Article
Full-text available
Soil contamination by petroleum contaminants and their derivatives has harmful effects on the environment, including groundwater and marine contamination and on the geotechnical properties of the soil. It decreases the soil strength, bearing capacity of foundations, and slope and trench stability. Petroleum contaminants can also alter the structure...
Article
The present study investigated the effect of zinc oxide (ZnO) nanoparticles on the geotechnical properties of lime-stabilized silty clay soil using uniaxial compressive strength, direct shear and Californian bearing ratio tests as well as scanning electron microscopy of the improved microstructure of the specimens. The optimum lime content of 6% in...
Article
A new installation method for micropile is introduced, called driven grouted micropiles (DGMs), in which closed-end perforated steel pipes are driven to the refusal depth using a light hammer and grout is injected incrementally into the pipe using pneumatic packers. The increased bearing capacity and ease of construction of these micropiles recomme...
Article
Full-text available
The unconfined aquifer beneath the Aliabad plain is one of the few freshwater resources in northwestern Qom province in Iran. Land subsidence in the Aliabad plain is primarily the result of extensive overexploitation of groundwater resources and successive droughts. The harmful effects of overexploitation include significant socioeconomic consequen...
Article
Full-text available
The geo-mechanical behavior of granular materials rigorously depends on their initial packing density, stress level and particle size distribution. Moreover, the behavior of binary granular soil is affected by the quality and quantity of their small particles named the fines content (FC). The contribution mechanism of the FC to the load-bearing str...
Article
Full-text available
Traffic disorder and excavation hazards due to substructure construction are of the foremost challenges in great cities. Deep excavation causes stress changes in adjacent soil mass near the excavated site which induces ground deformations. Magnitude of this deformation depends on many factors including excavation geometry, ground conditions, suppor...
Article
Full-text available
A suite of relationships has been developed between cone penetration resistance (qc) and SPT values of clayey and sandy soils. The major difference between these relationships and those of previous studies lies in the range of data and variety of soils. Most studies with the same scope of research since 1959 have been considered herein, and their p...
Preprint
In recent years, the use of geothermal energy has increased. However, the initial construction costs of geothermal boreholes are high. Thus, engineers have suggested an alternative strategy, which is using pile foundations as energy supply and support of the superstructure. However, this application results in increasing temperature in the pile and...
Article
Full-text available
In the present study, ground subsidence in the Aliabad plain (central Iran) was investigated using differential synthetic aperture radar interferometry. The data used for this purpose were Sentinel 1 images acquired during the time range from 24/03/2015 to 8/09/2016. Four interferogram pairs with high coherence were selected to minimize temporal de...
Article
Full-text available
One of the best methods for rehabilitating loos and soft soils is the application of stone columns. This method enhances the soil properties by increasing its load-bearing capacity, decreasing the soil subsidence, and accelerating the consolidation rate. In the present paper, numerical analysis of a stone column of 10 m in length into a clayey soil...
Article
Full-text available
Stress changes due to deep excavations will cause ground deformations near the excavated site. Deformation control in the vicinity of worn-out urban textures and important buildings is crucially significant. Prediction of ground deformation trends needs numerical modeling which should be calibrated with field studies; therefore, the accuracy of mon...
Article
Full-text available
Qom is the eighth most populated city in center of Iran, and its population growth rate is among the highest in this country. Th presence of a Great Salt Lake, petroleum potential and tourism attractions in this city sheds light on the importance of how solid waste landfill locations should be disposed, located and managed as an environmental issue...
Article
Full-text available
Tanguyeh dam, an embankment dam with a clay core, located in southeastern Iran, is the main hydraulic structure in Kerman Province. The study area, as one of the most active tectonic zones of Iran, is covered by coloured melange and pyroclastic rocks of different lithologies. In this study, we take into account the engineering geological properties...
Article
Full-text available
The Dynamic Probe is an effective tool used in site investigation. It is more economic than the use of direct drilling, particularly in explorations with moderate depth. This paper presents an experimental study to investigate the capability of using dynamic probing to evaluate the shear strength and compaction percent of fine soil. A series of dyn...

Network

Cited By