Abstract
In this study, we explore a new method based on color variation data to derive the kinetics of the entire process of the hydration of alkali-activated slag (AAS). Using this image analysis technique, we can monitor the induction period that cannot be observed using conventional microcalorimetry techniques. Color variation was recorded across a sequence of 9999 images, which were processed via MATLAB software package. Further, an average pixel value (APV) was determined to represent the color in each image. Reaction parameters, such as color variation velocity v(t), reaction speed ε(t), and hydration degree α(t), that govern the entire hydration process were determined. On the basis of the reaction parameters and a Krstulovic–Dabic kinetic model, integral and differential equations were derived to simulate the three basic processes of AAS hydration. Equations describing the reaction kinetics of AAS with solutions of three different concentrations of NaOH were extracted using this method.
Highlights
Academic Editor: Peiyu YanReceived: 21 May 2021Accepted: 18 June 2021Published: 21 June 2021Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims inThis study aims to explore the possibility of modeling the hydration kinetics of alkaline activated slag (AAS) from color variation data
Research on chemical reaction kinetics was initiated in the late nineteenth century
When studying the inversion of cane sugar in the presence of acids, Wilhelmy discovered that the rate of the process was proportional to the residual amount of cane sugar
Summary
Academic Editor: Peiyu YanReceived: 21 May 2021Accepted: 18 June 2021Published: 21 June 2021Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims inThis study aims to explore the possibility of modeling the hydration kinetics of alkaline activated slag (AAS) from color variation data. When studying the inversion of cane sugar in the presence of acids, Wilhelmy discovered that the rate of the process was proportional to the residual amount of cane sugar. Scholars such as Guldberg and Waage, van’t Hoff, and Arrhenius made significant contributions to our understanding of chemical reaction kinetics, and the kinetics equation of a generalized homogeneous reaction was established as follows [1]: published maps and institutional affiliations.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
