Structural Behavior of Cast In Situ Concrete Block Pavement

2005 ◽  
Vol 131 (9) ◽  
pp. 662-668 ◽  
Author(s):  
Teiborlang L. Ryntathiang ◽  
M. Mazumdar ◽  
B. B. Pandey
Keyword(s):  
Concrete Block ◽  
Structural Behavior

In-situ loading tests using the large-sized concrete block for weathered granite

2020 ◽  
pp. 191-198
Author(s):  
Ryunoshin Yoshinaka ◽  
Takeo Endo ◽  
Naoshige Nomura ◽  
Kazuhiko Yamagishi
Keyword(s):  
Concrete Block ◽  
Weathered Granite ◽  
Loading Tests

scholarly journals DIAGNOSIS PROCESSES FOR DESERT ROSE DOMES OF THE SOUF REGION IN ALGERIA

2019 ◽  
Vol XLII-2/W11 ◽  
pp. 115-119
Author(s):  
C. Azil ◽  
B. Djebri ◽  
L. Rovero
Keyword(s):  
Urban Landscape ◽  
Element Model ◽  
Structural Behavior ◽  
Structural Behaviour ◽  
Construction Technique ◽  
Architectural Elements ◽  
Vernacular Buildings ◽  
Dome Shape ◽  
Diagnostic Investigations

<p><strong>Abstract.</strong> In the Souf region of Algeria, all vernacular buildings are covered by domes, built with an unusual building material, the desert rose stone, peculiar to the region. These domes represent an element of identity of the region and describe a unique urban landscape that deserves to be protected and enhanced. Unfortunately, these architectural elements have suffered damage that devalues the urban landscape compromising their conservation. In particular, many domes have severe cracks and have collapsed in large areas.</p><p>Diagnostic investigations were carried out with the aim to understand the causes of the damages and to carry out guidelines for consolidation.</p><p>In particular, in situ surveys have allowed to analyze the employed construction technique, the collection of samples for the chemical-physical and mechanical investigations of the materials and a manual geometric survey of a typical building module. In addition, a Finite Element Model of a building module was realized with the aim of investigating structural behavior.</p><p>Considerations were made on the influence of the dome shape on structural behaviour and on the fractures pattern detected in many domes.</p>

In-situ TEM Study of Bismuth Nanostructures

2007 ◽  
Vol 1044 ◽  
Author(s):  
Xiaoting Jia ◽  
Vincent Berube ◽  
Shuo Chen ◽  
Bed Poudel ◽  
Son Hyungbin ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Thermoelectric Materials ◽  
Figure Of Merit ◽  
Structural Behavior ◽  
In Situ Tem ◽  
Electrical Measurements ◽  
Dimensionless Figure Of Merit ◽  
Bi Nanoparticles ◽  
Nanostructured Thermoelectric Materials

AbstractNanostructured thermoelectric materials have attracted lots of interest in recent years, due to their enhanced performance determined by their thermoelectric dimensionless figure of merit. However, because of equipment limitations, not much work has been done on combining simultaneous transport measurements and structural characterization on individual nanostructured thermoelectric materials. With an integrated TEM-STM system, we studied the structural behavior and electrical properties of bismuth (Bi) nanobelts and nanoparticles. Results showed that clean Bi nanostructures free of oxides can be produced by in-situ high temperature electro-migration and Joule annealing processes occurring within the electron microscope. Preliminary electrical measurements indicate a conductivity of two orders of magnitude lower for Bi nanoparticles than that for bulk Bi. Such in-situ studies are highly advantageous for studying the semimetal-semiconductor transition and how this transition could enhance thermoelectric properties.

scholarly journals Fatigue lifetime of a RC bridge along the Carajás railroad

2012 ◽  
Vol 5 (5) ◽  
pp. 627-658
Author(s):  
R. R. F. Santos ◽  
D. R. C. Oliveira
Keyword(s):  
Reinforced Concrete ◽  
Laboratory Tests ◽  
Structural Safety ◽  
Structural Behavior ◽  
Concrete Bridge ◽  
Structural Elements ◽  
Fatigue Lifetime ◽  
Reinforced Concrete Bridge ◽  
Bridge Number

The aim of this paper is to present and discuss the results obtained with a methodology used to characterize the concrete and to evaluate the structural safety against fatigue of the reinforced concrete bridge number 50A located in the Carajás railroad. An "in situ" inspection was carried out in order to assess the evolution of damage in structural elements, with reference to information available in existing projects, calculation memory and reporting of previous inspections. Extractions of concrete testimonies, alkalinity tests, sclerometry, pacometry and laboratory tests were also performed to characterize the materials mechanically and estimate the structural behavior of the bridge under higher future loads.

The Linhuaigang Main Dam Openings Vertical Interlocking Block Revetment Design and Calculation

2012 ◽  
Vol 212-213 ◽  
pp. 846-852
Author(s):  
Zhong Yang ◽  
Gui Sheng Wang
Keyword(s):  
Flood Control ◽  
Ground Deformation ◽  
Concrete Block ◽  
Earth Dam ◽  
High Wind ◽  
The Earth ◽  
Water Conservancy ◽  
Large Water ◽  
First Time

The design “non-rope opening vertical interlock block” is used in the main dam of Linhuaigang Project for the first time in China. The opening of the block can effectively reduce the uplift pressure induced by waves. The vertical interlock can make block interlock three- dimensionally so as to enhance the integrity of the block and improve the anti-wave performance. The design can not only improve the protection of the main dam slope under long blowing distance and high wind and waves, but also save the use of stone and construction investment as well as protect the environment. Openings vertical interlock concrete block between the rigid in-situ concrete slope and the flexible dry stone slope, not only avoid the shortcomings of in-situ concrete slope suited to soft ground deformation, but also resist the larger storms owing to the better integrity than dry stone pitching ,from the interlocked effect between the blocks. Compared with the entity block, opening vertical interlock block thickness is reduced greatly. The earth dam project of Lin Huai Gang flood control project applied openings vertical interlock block successfully in water conservancy projects .The project has the pioneering position in the use in the wave elements of reservoirs, lakes and the other large water conservancy revetment constructions.

Recruitment of juvenile abalone (Haliotis spp.) measured in artificial habitats.

1995 ◽  
Vol 46 (3) ◽  
pp. 549 ◽  
Author(s):  
GE Davis
Keyword(s):  
Natural Habitat ◽  
Concrete Block ◽  
First Year ◽  
Haliotis Rufescens ◽  
Artificial Habitats ◽  
Red Abalone ◽  
Young Of The Year ◽  
One Year ◽  
Empty Control

In September 1989, 45 concrete block habitats were deployed at three sites 25 km apart along the southern shores of Santa Rosa and Santa Cruz Islands, California, at depths of 10-16 m. In October 1989, 7200 small (≈ 41 mm) hatchery-reared red abalone, Haliotis rufescens, were introduced into 36 of the habitats. Nine habitats remained empty as controls. The habitats were surveyed in situ periodically for two years. Sufficient numbers of native abalone, H. rufescens and H. corrugata, were detected (315) to identify spring recruitment events. Habitats with introduced abalone contained more than twice as many native abalone as did empty control habitats during the first year. Average densities of native abalone in the artificial habitats (0.011 m-2) approximated densities of young-of-the-year abalone discovered by previous destructive sampling in natural habitat. Approximately 32% of the introduced abalone survived one year and 24% survived two years. Three to eight artificial habitats were sufficient to detect 20% differences in mean abalone densities during peak spring recruitment events.

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