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residential asphalt paving
Cold recycled asphalt pavements require the use of cement-emulsified asphalt composite binder (CEACB).
In this article, we are going to talk about why cement modified driveway is finding more customers by the day.
Understanding how cement-emulsified asphalt interacts with its environment is critical for improving CEACB usability.
The purpose of this study was to look into the interactions between cement-emulsified asphalt and its microstructural properties, as well as the mechanisms that underpin those interactions.
It also aimed to assess the interaction capability of cement-emulsified asphalt using macro-rheological measurements.
The first step was to compare the characteristic peak differences using an FTIR (Fourier transform infrared) spectrometer to qualitatively discuss the physicochemical interaction of cement-emulsified asphalt.
Second, the micro-morphological evolution behaviors of CEACB related to the cement-emulsified asphalt interaction were investigated using a fluorescence microscope (FM) and laser particle size analyzer (LPSA).
Third, the microstructural characteristics of CEACB were investigated using scanning electron microscopy (SEM) to examine the spatial network structure (SEM).
Finally, a macro-rheological index based on the dynamic rheological shear (DSR) test was proposed to evaluate the interaction capacity of cement-emulsified asphalt.
The results show that the cement-emulsified asphalt interaction is merely a physical blending process due to the lack of any new characteristic peaks in the FTIR spectrum other than for cement hydration products.
Asphalt droplet aggregate formation and cement particle adsorption to asphalt droplets may both be indicators of cement-emulsified asphalt interaction in early-age CEACB.
An appropriate cement-to-emulsified-asphalt ratio could promote the development of a denser spatial network structure of CEACB, as well as the growth and intertwining of cement hydration products with asphalt films.
The K-B-G* index based on the macro-rheological properties of CEACB with full consideration of the cement hydration process is very suitable for evaluating the ability of cement-emulsified asphalt to interact under the conditions of various cement proportions and curing times.
The research would aid in understanding the inherent properties of CEACB and encourage the improvement of the mechanical properties of cold recycled asphalt pavements.
Cold recycling technology is important for promoting waste utilization and environmental protection because of its advantages such as high Reclaimed Asphalt Pavement (RAP) disposal rate, low energy consumption, and minimal environmental pollution.
Cold recycled asphalt emulsion mixture (CRAEM) as a promising road material has been widely used in pavement maintenance and rehabilitation projects as emulsified asphalt techniques have improved.