Engineering and Technology Journal

Effect of Heating Borehole Spacing on Plasticity of Expansive Soil

Falah H. Rahil; Husam Baqir; Nabeel J. Tumma

Volume 38, 7A , July 2020, , Page 1062-1068

https://doi.org/10.30684/etj.v38i7A.79

Abstract

This paper presents the effect of spacing between boreholes heating on plasticity of expansive soils. The expansive soils used were prepared artificially by mixing Kut clay with different ... Read More ...

Evaluation of Reinforced Sub-Base Layer on Expansive Sub-Grade Soil

Mohammed Y. Fattah; Aqeel S. Aladili; Hussam F. Yousif

Volume 34, 9A , September 2016, , Page 1789-1803

https://doi.org/10.30684/etj.34.9A.7

Abstract

Reinforcedpavementlayershavebeengainingpopularityinthefield ofcivil engineeringdue totheir highlyversatileandflexible nature.Withthe adventofgeosynthetics in civil engineering, reinforced ... Read More ... Reinforcedpavementlayershavebeengainingpopularityinthefield ofcivil engineeringdue totheir highlyversatileandflexible nature.Withthe adventofgeosynthetics in civil engineering, reinforced earth technique has taken a new turn in its era. The practice of reinforced earth technique became easy and simple with geosynthetics. The research requirements are providing the materials and manufacturing of the loading machine (loading test apparatus). Materials include soil (bentonite), granularsub base, sand, and geogrid. The testing program consists of preparing of 6 models that represent layers beneath flexible pavement layers (subgrade and sub base layers). The model dimensions are 800*800*800 mm, subgrade layer is 400 mm thick and sub base layer 300 mm thick. The model tests include using geogrid reinforcement at the interface of the subgrade and sub base layer and in the center of sub base layer. It was concluded that a geo-grid reinforced soil is stronger and stiffer and gives more strength than the equivalent soil without geo-grid reinforcement. Geo-grids provide improved aggregate interlock in stabilizing road infrastructure through sub base restraint and base reinforcement applications, Geo-grid reinforcement provided between the sub base course and subgrade soil carries the shear stress induced by vehicular loads and thus it reduces the load transferred to the subgrade and the volume changes induced by swelling of the subgrade soil. The load carrying capacity of the pavement system is significantly increased for geogrid reinforced sub base stretch compared to unreinforced sub base layer on expansive soil subgrade. Comparison of the results of the model without geogrid reinforcement with other models reveals that there is an increase in the bearing capacity of model that includes geogrid reinforcement at the interface of subgrade by about 40%; and 20% for the model that consists of geogrid reinforcement in the center of sub base layer.

Behavior of Expansive Soil Treated with Silica Fume Material

Zeena Waleed .S. Abbawi

Volume 33, 5A , June 2015, , Page 1226-1246

https://doi.org/10.30684/etj.33.5A.4

Abstract

This research deals with the improvement of the mechanical properties of expansive clay soils by silicafume. The expansive soil was prepared in laboratory by mixing natural soil brought ... Read More ...

Geotechnical Properties of Expansive Soil Treated With Silica Fume

Zeena Waleed S. Abbawi

Volume 31, Issue 17 , October 2013, , Page 3358-3370

https://doi.org/10.30684/etj.31.17A.12

Abstract

Problematic soils such as expansive soil are those clay soils which exhibited significant volume changes as results of soil moisture variation, when a dry mass of clay is allowed to ... Read More ...

Effect of Dual Reinforcement on Wear Resistance by Aluminum Compacts Reinforce by SiC, Al2O3

Mohammed Saeed. Waheed; Hassan Hamed. Abed

Volume 27, Issue 13 , September 2009, , Page 423-429

https://doi.org/10.30684/etj.27.13.19

Abstract

The producing composite materials of dual reinforcement in which the matrix material is aluminum reinforced with two types of ceramic particles : which are Alumina (50μmKeywordscomposite ... Read More ...

Wedge Foundation in Expansive Soils

Mohammad A. Al-Neami; Farah S. Al-Jabary

Volume 27, Issue 13 , September 2009, , Page 2307-2318

https://doi.org/10.30684/etj.27.13.5

Abstract

The object of this study is to find a construction solution to the problem of expansive soils by suggesting of a new shape of the conventional footing which has a sharp edge, this footing ... Read More ...

مساهمة في دراسة العلاقة بين التداعي والانتفاخ مع اجهادات مص التربة

Volume 25, Issue 5 , July 2007, , Page 207-224

https://doi.org/10.30684/etj.25.5.5

Abstract

This research aims to study the role of soil suction and clay minerals on volumetric changes of a collapsible soil selected from Hawy Al-Kanissa area in Mosul city. The effect of low ... Read More ...

Keywords = Expansive soil

Effect of Heating Borehole Spacing on Plasticity of Expansive Soil

Abstract

Evaluation of Reinforced Sub-Base Layer on Expansive Sub-Grade Soil

Abstract

Behavior of Expansive Soil Treated with Silica Fume Material

Abstract

Geotechnical Properties of Expansive Soil Treated With Silica Fume

Abstract

Effect of Dual Reinforcement on Wear Resistance by Aluminum Compacts Reinforce by SiC, Al2O3

Abstract

Wedge Foundation in Expansive Soils

Abstract

مساهمة في دراسة العلاقة بين التداعي والانتفاخ مع اجهادات مص التربة

Abstract