Engineering and Technology Journal

Investigation of Some Properties for Laminated Composite Used for Prosthetic Socket

Shereen A. Abdulrahman; Qahtan A. Hamad; Jawad K. Oleiwi

Volume 39, Issue 11 , November 2021, , Page 1625-1631

https://doi.org/10.30684/etj.v39i11.2050

Abstract

Polyester has been used as a prosthetic socket base. It is well documented that the raw material of the socket base should have exhibited good mechanical properties. Prosthetic socket ... Read More ...

Study the Effects of Nano-Materials Addition on Some Mechanical Properties of Cement Mortar

F.A. Rasin; L.K. Abbas; M.J. Kadhim

Volume 35, 4A , April 2017, , Page 348-355

https://doi.org/10.30684/etj.35.4A.6

Abstract

This research involves nano-materials addition and interaction with cement mortar behavior for many mortar samples under variable curing time with constant water to cement ratio (W/C ... Read More ...

Study the Effect of Nano Ceramic Particles on Some Physical Properties of Acrylic Resins

Q.A. Hamad

Volume 35, 2A , February 2017, , Page 124-129

https://doi.org/10.30684/etj.2017.127322

Abstract

In the present research, study the effect of adding two different types of reinforcing particles, which included: nano-alumina (nano-Al2O3) and nano-silica (nano-SiO2), that added with ... Read More ...

Effect of Al2O3 Powder on Some Mechanical and Physical Properties for Unsaturated Polyester Resin Hybrid Composites Materials Reinforced by Carbon and Glass Fibers

Reem Alaa Mohammed

Volume 34, 12A , December 2016, , Page 2371-2379

https://doi.org/10.30684/etj.34.12A.18

Abstract

This research is a study of the effect of Al2O3 powder on physical and mechanical properties of the polymer hybrid composites based on unsaturated polyester resin reinforced with carbon ... Read More ...

Effect of Micro Powder on Mechanical and Physical Properties of Glass Fiber Reinforced Epoxy Composite

Aseel Basim Abdul-Hussein; Fadhel Abbas Hashim; Tamara Raad Kadhim

Volume 34, 7A , July 2016, , Page 1402-1414

https://doi.org/10.30684/etj.34.7A.12

Abstract

In the present study, composites were prepared by Hand lay-up molding. The composites constituents were epoxy resin as the matrix, 3% volume fractions of Glass Fibers (G.F) as re enforcement ... Read More ...

Water Absorption of HDPE/Al2O3,TiO2 Composites

Harith I. Jaffer; Z. R. Al-Shammary; Ali A. Abbas; Ali Qassim

Volume 33, 7B , August 2015, , Page 1337-1347

https://doi.org/10.30684/etj.2015.116703

Abstract

The water absorption of high density polyethylene filled with micro hybrid (titanium dioxide and alumina), alumina and titanium dioxide with weight ratio of 15%, 20%, 25% and 30% , ... Read More ...

Effect of Nature Materials Powders on Mechanical and Physical Properties of Glass Fiber / Epoxy Composite

Aseel Basim Abdul-Hussein; Emad Saadi AL-Hassani; Reem Alaa Mohammed

Volume 33, 1A , January 2015, , Page 175-197

https://doi.org/10.30684/etj.33.1A.14

Abstract

In the present study composites were prepared by Hand lay-up molding. The composites constituents were epoxy resin as the matrix, 6% volume fractions of Glass Fibers (G.F) as reinforcement ... Read More ...

Assessing the Dynamic Behavior of Asphalt Stabilized Gypseous Soil

Mahmood D. Ahmed

Volume 32, Issue 4 , May 2014, , Page 822-841

https://doi.org/10.30684/etj.32.4A.3

Abstract

The study presents the test results of stabilizing gypseous soil embankment obtained from Al- Faluja University Campus at Al-Ramady province. The laboratory investigation was divided ... Read More ... The study presents the test results of stabilizing gypseous soil embankment obtained from Al- Faluja University Campus at Al-Ramady province. The laboratory investigation was divided into three phases, the physical and chemical properties; the optimum liquid asphalt (emulsion) requirements (which are manufactured in Iraq) were determined by using one dimensional unconfined compression strength test. In the first phase , the optimum fluid content was 11% (6% of emulsion with 5% water content). At phase two, the effect of aeration technique was investigated using both direct shear and permeability test. At phase three, a laboratory soil model of dimensions 50x50x30 cm was used as a representative of gypseous soil; pure soil, and asphalt stabilized soil have been compacted in five layers after practicing an aeration technique at maximum dry density (modified compaction) cyclic loading test was carried out on four gypseous soil models, two of them were pure soil under (dry and absorbed condition), and the other two were stabilized with emulsion also under (dry and absorbed condition). The impact of charging the hydraulic conductivity due to asphalt stabilization was investigated and the vertical deformations were determined using LVDT. For the pure soil in dry condition the vertical settlement at the top surface was (7.45 mm) at (157 load cycles), while for pure soil model under absorbed condition, the water was raised to the surface in three days , so the vertical settlement at the top surface was (12.5 mm) at (29 load cycles), this means that the pure gypseous soil under absorbed condition show reduction in strength by(85%). When the stabilized soil is in dry condition, the vertical settlement at the top surface was (9.75 mm) at (911 load cycles), while the soil was stabilized and subjected to water absorbed for seven days. The water stopped rising at second layer which is the same inlets level from the bottom, and the vertical settlement was (10.47 mm) at (897 load cycles), so there is no change in strength at failure.

Keywords = Water absorption

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