[논문]Application of the Arrhenius Equation in Geotechnical Engineering

Yoon, Hyung-Koo

doi:10.9720/kseg.2014.4.575

Application of the Arrhenius Equation in Geotechnical Engineering 원문보기

지질공학 = The journal of engineering geology, v.24 no.4, 2014년, pp.575 - 581

Yoon, Hyung-Koo (Department of Geotechnical Disaster Prevention Engineering, Daejeon University)

Abstract ▼ AI-Helper

The reliable measurement of geotechnical properties in cold regions should account for their fluctuations with temperature. The objective of this paper is to introduce a chemical model based on the Arrhenius equation that can predict the properties of materials as their temperature changes. The model can monitor phases and reaction rates as they change with temperature. It has been already applied in the fields of geology, construction, chemistry, materials engineering, and food science. The application of the Arrhenius equation requires a reliable estimate of the activation energy. Therefore, this study also demonstrates several methods for evaluating activation energy in different contexts through summaries and reviews of previous research related to the Arrhenius equation. This paper may be of wide use in obtaining temperature-dependent parameters in geotechnical engineering.

주제어

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문제 정의

Other factors that influence the rate of a reaction include the type of reaction, the effect of any catalysis, and the reactants’ concentrations. Among these factors, this paper focuses on the effects of temperature with regard to phase changes.
Logsdon (2008) plotted the activation energy according to the electrical spectrum in soil using the Arrhenius equation. The method was similar to that of a previous study; however, this work sought to investigate the factors affecting the activation energy. The resulting relationship between the water content of soil and activation energy is shown in Fig.
(1999) used the Arrhenius equation to obtain temperature-compensated electrical conductivity in the Earth’s mantle. The study was conducted to find accurate activation energies giving consideration to the increasing temperature with depth. Therefore, they suggested equation (6), which is a function of the temperature, pressure, and volume changes that occur deep in the earth.
This paper investigated the change in concrete strength when various materials were added to the mixture. The general chemical reaction is an exothermic hydration process due to the alkene substrate.
The activation energy was estimated by curve fitting. This study demonstrates that statistical methods can improve activation energy prediction by considering the error ratio.

제안 방법

The estimated activation energies show a linear relationship between reactivity and temperature with a high coefficient of determination. The study suggested a temperature index (TI), an integrated data set including the calculated activation energies, for providing the trend of activation energy according to the compound.
This work introduces the Arrhenius equation, and examines previous studies of its application in various fields. The activation energy in the Arrhenius equation is an important parameter to predict the products of a reaction system, which greatly depend on the temperature.

이론/모형

The vibration frequency generally affects chemical reactions inside or on the surface of crystalloids; Polanyi and Wigner (1928) suggest a value of 1013 Hz. An equation for predicting characterization in the transition range of a chemical process was introduced by Shannon (1964), who used the divided function for distinguishing desorption and loss in the gaseous phase. Young (1966) studied an interesting irreversible reaction under thermo-mechanical conditions, and suggested a new equation assuming zero vibration frequency.
The increments of strength were monitored with the Arrhenius equation as the temperature rose during hardening. The activation energy was also determined using the Arrhenius equation. This paper is significant in that it predicts the activation energy according to the concrete’s composition.

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