The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The behaviour of bitumen was investigated by differential scanning calorimetry. It is shown that two glass transitions take place after cooling at constant rate. The magnitude and temperature of these transitions depend on the cooling rate. At low cooling rate, (< 1 K min -1 ) the glass transition at the higher temperature vanishes and an endothermic peak is obtained. From these...
The miscibility of bitumen-coal tar mixtures has been investigated. Bitumen-coal tar mixtures containing 10 to 50 wt% of coal tar were examined by differential scanning calorimetry and optical microscopy to determine the threshold of miscibility. A solid-like precipitate was observed after blending bitumen with coal tar. Up to 20 wt% of added coal tar, only one liquid-like phase was detected by...
The influence of polar compounds like phenols and pyridine-type bases on the morphology and glass transition of coal tar is investigated. A coal tar sample is separated into various fractions which thereafter are recombined progressively in order to reconstitute the starting sample. At each step, the glass transition temperature and activation energy of the relaxation process of the glassy fractions...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.