Strength and durability characteristics of biopolymer-treated desert sand

2017 ◽  
Vol 12 (5) ◽  
pp. 785-801 ◽  
Author(s):  
Mohsin U. Qureshi ◽  
Ilhan Chang ◽  
Khaloud Al-Sadarani
Keyword(s):  
Desert Sand ◽  
Strength And Durability

Microstructure of an extruded rapidly solidified Al-8Fe-2Mo alloy

1986 ◽  
Vol 44 ◽  
pp. 548-549
Author(s):  
W. T. Donlon ◽  
J. E. Allison ◽  
S. Shinozaki
Keyword(s):  
Electron Microscopy ◽  
Automotive Industry ◽  
Fuel Economy ◽  
High Strength ◽  
Al Alloys ◽  
Light Weight ◽  
Thin Sections ◽  
Strength And Durability ◽  
Rapidly Solidified ◽  
Whitney Aircraft

Light weight materials which possess high strength and durability are being utilized by the automotive industry to increase fuel economy. Rapidly solidified (RS) Al alloys are currently being extensively studied for this purpose. In this investigation the microstructure of an extruded Al-8Fe-2Mo alloy, produced by Pratt & Whitney Aircraft, Goverment Products Div. was examined in a JE0L 2000FX AEM. Both electropolished thin sections, and extraction replicas were examined to characterize this material. The consolidation procedure for producing this material included a 9:1 extrusion at 340°C followed by a 16:1 extrusion at 400°C, utilizing RS powders which have also been characterized utilizing electron microscopy.

Use of backscattered electron image intensity signals to calculate the water/cement ratio of concrete

1992 ◽  
Vol 50 (1) ◽  
pp. 356-357
Author(s):  
R. J. Lee ◽  
A. J. Schwoeble ◽  
Yuan Jie
Keyword(s):  
Reliable Data ◽  
X Ray ◽  
Rapid Measurement ◽  
Trained Personnel ◽  
Electron Image ◽  
Backscattered Electron ◽  
Production Period ◽  
Strength And Durability ◽  
Automated Procedures ◽  
Standard Density

Water/Cement (W/C) ratio is a very important parameter affecting the strength and durability of concrete. At the present time, there are no ASTM methods for determining W/C ratio of concrete structures after the production period. Existing techniques involving thin section standard density comparative associations using light optical microscopy and rely on visual comparisons using standards and require highly trained personnel to produce reliable data. This has led to the exploration of other methods utilizing automated procedures which can offer a precise and rapid measurement of W/C ratio. This paper discusses methods of determining W/C ratio using a scanning electron microscope (SEM) backscattered electron image (BEI) intensity signal and x-ray computer tomography.

INCREASING THE WEAR RESISTANCE OF ELEMENTS AND COMPONENTS OF FORGING AND STAMPING EQUIPMENT (FOR EXAMPLE, PERFORMING SEPARATION OPERATIONS)

2020 ◽  
Author(s):  
K.O. Kobzev ◽  
◽  
S.A. Vyalov ◽  
E.S Bozhko ◽  
I.A. Zolotuhina ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Technological Capabilities ◽  
Recoil Force ◽  
The Press ◽  
Strength And Durability

The article describes the possibilities of increasing the durability of crank presses. The influence of the main parameters of the press on the value of the recoil force was studied. Based on the analysis of this topic, the types of expansion of technological capabilities of crank presses and their strength and durability were summarized.

Strength and Durability Characteristics of Stabilized and Compressed Laterite Bricks

2014 ◽  
Vol 4 (4) ◽  
pp. 1-6
Author(s):  
Shanmuka K.N ◽  
◽  
Manjunath. K S ◽  
Prahallada M.C. ◽  
◽  
...  
Keyword(s):  
Strength And Durability

Wątek składania ofiar w dekoracji budowli sakralnych Dura Europos

Vox Patrum ◽  
2015 ◽  
Vol 64 ◽  
pp. 393-402
Author(s):  
Ilona Skupińska-Løvset
Keyword(s):  
Roman Empire ◽  
Late Antiquity ◽  
Archaeological Research ◽  
Dominant Form ◽  
Xxth Century ◽  
Desert Sand ◽  
Military Camp ◽  
The Military

Dura Europos, or as proposed today Europos Dura, was a fortified settlement on the border between the Roman Empire and the East. The archeological dis­coveries reflected the character of the settlement – the fortified agglomeration grouped at the military camp. After its fall Europos Dura was covered by desert sand only to be discovered in the XXth century. Archaeological research has dis­closed documentation of its multicultural character. This paper points to the fact of coexistence of various religions in late antiquity Europos Dura. Paintings and sculptures discovered in situ indicate that scene of offering was a favorite subject in the sacral art of Europos Dura, independent of religion. The ceremony of in­cense burning constitutes the dominant form of offering regarding visualizations of this important ceremony.

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