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Current Issue [Vol. 05, No. 03] [March 2019]

Paper Title :: Effect of Admixtures on Engineering Properties of Self Compacting Concrete
Author Name :: Shreyas.K
Country :: India
Page Number :: 01-08
An experimental study on self-compacting concrete (SCC) having water cement content of 0.42 with the work involving in three types of mixes namely the first consisting of different percentages of fly ash (FA) mixed with concrete, secondly with different percentages of silica fume (SF) with self-compacting concrete testing for its engineering properties and thirdly using a mixture of Fly Ash with super plasticizer SP-430 for a notable variation in its strength characteristics, after the preparation of each mix cylindrical specimens are casted and cured for 7 & 28 days for testing its properties. Since the study involved is with self-compacting concrete, slump cone and V-funnel tests are carried out on the fresh SCC while concrete compressive & split tensile strength values are determined on hardened blocks as an engineering properties. It has been found that there is an increase in compressive strength of SCC with 20% addition of silica fumes to the concrete compared with 30% of fly ash for 28 days cured specimens & also the specimens containing super plasticizer with fly ash in the concrete will be strong & gives notable compressive & split tensile strength with good workability characteristics when compared to only fly ash & Silica fumes which has been mixed with self-compacting concrete.
Keywords:Water cement ratio, fly ash & silica fumes, super plasticizer-SP 430, mix design, compressive & Split tensile strength.
[1]. Zhengyue Ren, Lijiu Wang. Research of High Fly Ash Content in Concrete with Dippy Construction Formwork. International Workshop on Sustainable Development and Concrete Technology.
[2]. Bentz DP, Snyder KA, Stutzman PE. The effect of Curing Conditions, Hydration of Portland cement. In: Presented at the 10th international congress chemistry of cement, vol. 2, Sweden, 1997.
[3]. Salih Yazicioglu, Sinan Caliskan, Kazim Turk. Effect of curing conditions on the engineering properties of self-compacting concrete. Ind J Eng Mater Sci 2006;13:25–9.
[4]. Ravikumar MS, Selvamony C, Kannan SU, Basil Gnanappa S. Behavior of self-compacted self-curing kiln ash concrete with various admixtures. ARPN J Eng Appl Sci 2009.
[5]. Mehta, P. K., “Concrete Structure: Properties and Materials”, Prentice~Hall, pp. 367-378, 1986, Neville, A. M., “Properties of Concrete”, 4th ed., Longman Group, pp. 757-758, 1986.

Paper Title :: Environmental Impact from a Satellite perspective before the construction of the new International Airport in Mexico City
Author Name :: Fernando Mireles Arellano || Amayrani Martínez Mendoza || Amanda Oralia Gómez González
Country :: México
Page Number :: 09-30
¿The construction of the new International Airport in Mexico City (NAICDMX) will cause irreversible environmental impact?, ¿Dried in the Lake Nabor Carrillo to avoid the presence of migratory birds?, ¿What will happen with the vegetation that exists in that place?, ¿What consequences will have its construction?, Answers to questions like these give rise to the next article where will be displayed using satellite images for remote sensing the change that over four years of construction of the new International Airport in Mexico City has caused to the environment. For the study will be used Landsat imagery and Sentinel through a spatial-temporal analysis will show the change in temperature of the affected area, with the NDVI (Index of Natural Vegetation) will analyze the quality and quantity of vegetation along with a MNDWI (Index of water saturation) which will allow us to show the change in bodies of water ending with virtual combinations which will show important properties.
Keywords: Landsat, Mexico City, Remote Sensing, Satellite, Sentinel
[1]. Heat Islands in México City: A Perspective from Remote Sensing Satellite Images, Author: Fernando Mireles Arellano, Amanda Oralia Gómez González, Carlos Hernández López; International Journal of Latest Research in Engineering & Technology (IJLRET) (ISSN: 2454-5031).
[2]. Amanda Oralia Gómez González, Fernando Amir Espinoza Acuña, Carolina Coronado Alderete and Frida Ximena Jimenez Law (2017). Qgis Manual focused on Tele-Epidemiologia. First Edition, Mexico City.
[3]. The United States Geological Survey, USGS https://earthexplorer.usgs.gov/
[4]. National Commission for the Knowledge and Use of Biodiversity https://www.gob.mx/conabio
[5]. Copernicus European Space Agency https://scihub.copernicus.eu/dhus/#/home

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