Effect of Pollution on Mechanical Properties of Foundations in Towers of Electrical Transmission
González Rolón Bárbara,
Fuentes Castañeda Pilar
Issue:
Volume 2, Issue 1, March 2018
Pages:
1-7
Received:
27 February 2018
Accepted:
21 March 2018
Published:
18 April 2018
Abstract: The effect of meteorological variables such as relative humidity, maximum temperature, and predominant wind orientation, as well as oxidant species on the variation of mechanical resistance to compression of the cylinders extracted from two electric transmission towers was investigated. The obtained results are compared with the mechanical strength to compression achieved in concrete cylinders prepared in the laboratory and submerged in solutions of nitric acid and sulfuric acid in concentrations taken from the statistical data of nitrous oxide and sulfurous present in the environment where have installed the towers under study. The results show a decrease in the mechanical strength of the exposed cores in the predominant direction of the wind and of the cylinders submerged in the solution with acids, concluding that both conditions favor the degradation of concrete properties.
Abstract: The effect of meteorological variables such as relative humidity, maximum temperature, and predominant wind orientation, as well as oxidant species on the variation of mechanical resistance to compression of the cylinders extracted from two electric transmission towers was investigated. The obtained results are compared with the mechanical strength...
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Synthesis of Copper Oxides Nanostructures by an Overstressed Nanosecond Discharge in Atmospheric Pressure Air between Copper Electrodes
Alexander K. Shuaibov,
Alexander Y. Minya,
Antonina A. Malinina,
Alexander N. Malinin,
Vladislav V. Danilo,
Mihail Yu. Sichka,
Igor V. Shevera
Issue:
Volume 2, Issue 1, March 2018
Pages:
8-14
Received:
13 February 2018
Accepted:
8 April 2018
Published:
7 May 2018
Abstract: The results of study of the characteristics and parameters of plasma of a high-current nanosecond discharge in atmospheric pressure air between copper electrodes under conditions of strong overstress of the discharge gap are presented. Under such conditions, favorable conditions are created for igniting an atmospheric pressure diffuse discharge in an inhomogeneous electric field. The spatial, electrical and optical characteristics of the discharge, as well as the parameters of the air plasma with small additions of copper vapor are studied. It is shown that this type of discharge can be used for the synthesis of copper oxides nanostructures.
Abstract: The results of study of the characteristics and parameters of plasma of a high-current nanosecond discharge in atmospheric pressure air between copper electrodes under conditions of strong overstress of the discharge gap are presented. Under such conditions, favorable conditions are created for igniting an atmospheric pressure diffuse discharge in ...
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