Bibliographic citations
Varas, E., (2018). Estudio comparativo de las propiedades del concreto de mediana a baja resistencia producido sin equipo, con equipo y con aditivo [Tesis, Universidad Nacional de Ingeniería]. http://hdl.handle.net/20.500.14076/13397
Varas, E., Estudio comparativo de las propiedades del concreto de mediana a baja resistencia producido sin equipo, con equipo y con aditivo [Tesis]. : Universidad Nacional de Ingeniería; 2018. http://hdl.handle.net/20.500.14076/13397
@misc{renati/262645,
title = "Estudio comparativo de las propiedades del concreto de mediana a baja resistencia producido sin equipo, con equipo y con aditivo",
author = "Varas Castro, Ernesto Javier",
publisher = "Universidad Nacional de Ingeniería",
year = "2018"
}
The present thesis " comparative Study of the properties of the concrete one of median to low resistance produced without equipment, with equipment and with additive ", aims to produce concrete mixtures of three different ways (without equipment, with equipment and with I equip more plasticizing additive) and to quantify the differences in the properties both in fresh and hardened. For every relation water / cement = 0.60, 0.65 and 0.70 and with the help of a mechanical equipment, it is achieved to define the respective design of mixture. Each of these three designs of mixture with equipment, used as base to realize the designs of mixture for other two remaining forms in those who were produced, it is worth saying, with I equip more plasticizing additive and without equipment (on floor of I make concrete). The materials used in the present investigation were the Cement Portland type I "Sun", thin attaché proceeding from the quarry of Trapiche, thick attaché proceeding from the quarry Unicon, drinkable water and additive Chema Plast. At first they managed to determine the physical properties of the attachés; after it and with the help of the above mentioned information, the design of mixture realized for every relation water / cement and for each of three forms in those that it was produced. With the design of mixture already defined for each one the cases, there was elaborated certain quantity of shifts of mixture of concretly to proceed to effect the diverse tests to I make concrete so much in fresh as hard condition. The tests realized in the Laboratory N º 1 Material testing " Ing. Manuel Gonzales de La Cotera ", of the Faculty of Civil Engineering of the U.N.I. The main conclusions are: Mixes made without equipment and with equipment more additive, require less water. The exudation of a mixture elaborated without equipment increases in average 46%, and for a mixture elaborated with I equip more additive it diminishes in average 11%. The time of final forge of a mixture elaborated without equipment increases in average 15%, and for a mixture elaborated with I equip more additive it increases in average 7%. The resistance to the compression to 28 days for the concrete one produced without equipment diminishes in average 5%, and for the concrete one produced with I equip more additive it increases in average 12%. This is due to a poor mixing process in the first case and the effect of the plasticizer additive in the second case.
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