Citas bibligráficas
Ponce, E., (2016). Estudio comparativo del efecto de aditivos Chema y Sika aceleradores de fragua en la ciudad del Cusco en concretos expuestos a climas alto andinos. [Tesis, Universidad Andina del Cusco]. https://hdl.handle.net/20.500.12557/724
Ponce, E., Estudio comparativo del efecto de aditivos Chema y Sika aceleradores de fragua en la ciudad del Cusco en concretos expuestos a climas alto andinos. [Tesis]. : Universidad Andina del Cusco; 2016. https://hdl.handle.net/20.500.12557/724
@misc{renati/18197,
title = "Estudio comparativo del efecto de aditivos Chema y Sika aceleradores de fragua en la ciudad del Cusco en concretos expuestos a climas alto andinos.",
author = "Ponce Córdova, Edison Simón",
publisher = "Universidad Andina del Cusco",
year = "2016"
}
The comparative Study of the effect of preservatives Chema and accelerating Sika of forge in the city of the Cusco, in exposed concretes to Andean high climates, he/she has for objectives to identify the characteristics of the two mark preservatives Chema and accelerating Sika of forge in exposed concretes to Andean high climates, evaluating the time of forge, resistance to the understanding and difference of costs of the concrete, using a minimum proportion, he/she mediates and maxim of preservative acelerante recommended by each maker. When the ambient temperature descends under the 5°C, the concrete can suffer considerable damage, this happens when the temperature falls to the point that the water contained in fresh mixtures or in young concretes he/she freezes, it is for this reason that the use of preservatives forge acelerantes is recommended marketed in the city of the Cusco in exposed concretes to Andean high climates. At the present time the use of preservatives forge acelerantes, is a technique that is using in the world for the elaboration of concrete and this way to guarantee the time of forge initial from the exposed concrete to cold climates. The present thesis is of descriptive-experimental character, through the one which, it is sought to contribute in the knowledge in the comparison of the commercial preservatives in the city of the Cusco. The attachés used in the present thesis, are of the quarries of Vicho, Huambutio and Cunyac, these attachés in certain proportions complete the properties of the norms ASTM and NTP, for the elaboration of the design of mixtures for the method ACI. The time of forge initial of the cement pasta with addition of preservatives acelerantes, takes in lapses of time of one hour, the resistance to the compression of the different types of concretes is subjected to the 3, 7 and 14 days, these results are shown in the charts of the chapter IV The concretes with addition of preservatives Sika 3 and Chema 5 in a maximum proportion, they reduce their resistance to the 14 days of having forged, while the concretes with addition of preservatives Sika 5 and Chema Estruct in anyone of itsproportions, experiences an increment from the progressive resistance to the 3,7 and 14 days. The costs of materials for m3 of concrete, it varies according to the type of preservative selected acelerante, and the used proportion, turning out to be the most economic in the minimum proportion Sika 5 with S / .312.12, and the most expensive Sika 3 with S / .393.38, in a proportion madia the most economic is Chema Estruct with S / .327.21, and the most expensive is Sika 3 with S / .404.17, in a maximum proportion the most economic is Chema Estruct with S / .341.25, and the most expensive is Chema 5 with S / .437.68, the costs of the inputs for the investigation are taken in the city of the Cusco.
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