scholarly journals Geo-Engineering Study of Selected Soils for Cement Industry in Al-Kifil District, Babylon, Central Iraq

2021 ◽  
Vol 54 (2F) ◽  
pp. 89-96
Author(s):  
Muhsen Kalaf ◽  
Mohammed Hussien ◽  
Bilal Issa
Keyword(s):  
Grain Size ◽  
Size Distribution ◽  
Grain Size Distribution ◽  
Clayey Soil ◽  
Chemical Properties ◽  
Cement Industry ◽  
Silty Clay ◽  
Plant Laboratory ◽  
Simple Description ◽  
The Relationship

The research was conducted on nine pits for selected soils in Babylon, in the Al-Kifl region in particular. It aims to find the relationship between the physical and chemical properties of the studied soil and its suitability in the cement industry. Nine samples of different depths were taken with a simple description of the soil in the fieldwork stage. As for the stage of laboratory tests, it included testing the grain size distribution to find the percentage of sand, silt, and clay, and Atterberg limits to find plasticity. It was found through these tests that the soil is silty clay and has low plasticity except for samples no. 5, and 6, which were clayey soil with low plasticity. The relationship between physical properties depends on the property of the grain size distribution, as it is the function of the rest of the properties. Chemical tests of the samples and comparing the ratios of their oxides with the standard specifications of the Kufa plant laboratory turned out to be suitable for the manufacture of ordinary Portland cement, as the study area is considered a good quarry for the clays used in such industries.

scholarly journals Study of the Relationship between some Physical Properties of Selected Soils in Babylon, Central Iraq

2021 ◽  
Vol 54 (2D) ◽  
pp. 155-164
Author(s):  
Muhsen O. Khalaf
Keyword(s):  
Grain Size ◽  
Physical Properties ◽  
Size Distribution ◽  
Grain Size Distribution ◽  
Dry Density ◽  
Silty Clay ◽  
Maximum Dry Density ◽  
Engineering Structures ◽  
Different Depths ◽  
The Relationship

The research is based on five selected soil sites in Babylon, Iraq, and aims to find the relationship between the physical properties of the soil. Where five samples were taken at different depths with a description of the soil for them in the fieldwork stage. As for the laboratory investigations phase, it included exploratory grain size distribution and atterberg limits to find plasticity and inspecting the maximum dry density. It was found through these tests that the soil is clay with low plasticity, except the fourth and fifth samples, as it is silty clay with low plasticity. Soil efficiency for all samples is Inactive. The relationship between the physical properties depends on the grain size distribution characteristic, as it is a function of the rest of the properties. It was also found that the percentage of sand in clay soils increases the maximum dry density in them so that 20-30% of the form and the remainder do not exceed fine sizes (silt and clay), and with acceptable plasticity that is important in the field of using the soil for backfilling purposes under the foundations for engineering structures and roads.

The Effect of Grain Size Distribution on the Mechanical Properties of Nanometals

2008 ◽  
Vol 140 ◽  
pp. 185-190 ◽  
Author(s):  
T.B. Tengen ◽  
Tomasz Wejrzanowski ◽  
R. Iwankiewicz ◽  
Krzysztof Jan Kurzydlowski
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Flow Stress ◽  
Size Distribution ◽  
Grain Size Distribution ◽  
Deformation Mechanisms ◽  
Average Grain Size ◽  
Significant Interest ◽  
Size Dispersion ◽  
The Relationship

Predicting the properties of a material from knowledge of the internal microstructures is attracting significant interest in the fields of materials design and engineering. The most commonly used expression, known as Hall-Petch Relationship (HPR), reports on the relationship between the flow stress and the average grain size. However, there is much evidence that other statistical information that the grain size distribution in materials may have significant impact on the mechanical properties. These could even be more pronounced in the case of grains of the nanometer size, where the HPR is no longer valid and the Reverse-HPR is more applicable. This paper proposes a statistical model for the relationship between flow stress and grain size distribution. The model considered different deformation mechanisms and was used to predict mechanical properties of aluminium and copper. The results obtained with the model shows that the dispersion of grain size distribution plays an important role in the design of desirable mechanical properties. In particular, it was found that that the dependence of a material’s mechanical properties on grain size dispersion also follows the HPR to Inverse-HPR type of behaviour. The results also show that copper is more sensitive to changes in grain size distribution than aluminium.

Contribution to a Technological Characterization of Kaolins from Cuba and Brazil

2006 ◽  
Vol 530-531 ◽  
pp. 720-727
Author(s):  
Guillermo Ruperto Martín Cortés ◽  
Wildor Theodoro Hennies ◽  
Francisco Rolando Valenzuela-Díaz
Keyword(s):  
Grain Size ◽  
Size Distribution ◽  
Grain Size Distribution ◽  
X Ray Diffraction ◽  
Scanning Electronic Microscopy ◽  
Electronic Microscopy ◽  
Simple Description ◽  
X Ray ◽  
The Republic

This paper studies the main well-know technological types of kaolins clays from the Republic of Cuba and compares it with one from Brazil. A simple description from the Cuban geology and from the involved kaolins deposits is showed. The basic characterization of each kind of kaolin, includes, chemical analyzes, grain size distribution, scanning electronic microscopy, X-ray diffraction and X-ray fluorescence for chemicals. For special assays it had conformed, by a simple axis hand press up to 5 t, test bodies, which had been burnt to the temperatures of 950, 1250 and 1450°C. These results include refractory and contraction results.

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