ASPHALT HARDENING
Asphalt Definition
We all know that asphalt is a very important material in flexible pavement work. Therefore, knowledge of how to process asphalt in order to achieve its maximum function is very much needed by road practitioners. First, let's get to know the types of asphalt, namely oil asphalt, processed asphalt and natural asphalt. The introduction continues with the basic properties of asphalt materials, for example, because asphalt is thermoplastic, we recognize hard asphalt (low penetration) and soft asphalt (high penetration). Next we recognize the important properties of asphalt mixtures, and in the last chapter we will learn how to sample and test asphalt for asphalt mix work.
Types of Asphalt
Oil asphalt (also called cement asphalt, hard asphalt, bitumen, or raw asphalt) is a collection of materials left over from the petroleum distillation process, the rest of oil refinery products. Besides oil asphalt, we also know natural asphalt, for example "Trinidad Lake Asphalt", and also on the island of Buton there is natural asphalt Kabungka and natural asphalt Lawele, as well as in several places in Indonesia and in Canada. We also know processed asphalt such as Asphalt Cement, Asphalt Emulsion, Liquid Asphalt, Modified Asphalt and so on.
- Oil Asphalt
- Asphalt Emulsion
- Foamed Asphalt
- Cutback asphalt
- Modified Asphalt
- Buton Asphalt
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Asphalt Mixture Functions and Capabilities
From environmental considerations, the use of asphalt for road pavement is very beneficial, because with asphalt used as road pavement, it can absorb large volumes of residual oil production which can potentially be hazardous waste. So it is appropriate for us as road practitioners to recognize the properties and capabilities of asphalt as a pavement layer in order to obtain good quality. In chapter II, the knowledge of the important properties of asphalt that must be understood by Road Practitioners is described so that the work of processing asphalt materials to be used as road pavement layers can achieve maximum results, as follows:
- A description of the functions and capabilities of asphalt
- A description of the characteristics of asphalt-concrete mixtures.
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