Often see the roads broken? Some roads are easily damaged, but of course, those who live in the area will not remain silent, but they will take care of the road and especially we will get the pictures and the terms of the work (specifications) and the area will be employed. One of the road hardenings is done with asphalt material. Asphalt is defined as dark or dark brown material, the solid room temperature pad is dense to slightly dense. If heated to a certain temperature the asphalt can be soft or liquid so that it can wrap the aggregate particles at the time of concrete asphalt manufacture or can enter into the existing pores on spraying or watering on macadam or melting violence. If the temperature begins to fall, the asphalt will harden and bind the aggregate in its quarters (thermoplastic properties). In order to fix the roadway, it is necessary that methods are not arbitrary, one of them is by using a cbr testing guide which serves as a test of soil and skin samples from the standard area, the pressure is weighed and divided by the required pressure.
Based on how the asphalt can be distinguished upon; First, the distinguishable natural asphalt – Rock asphalt, an example of asphalt from the island of concrete and lake asphalt with asphalt samples from Bermudez, Trinidad. The second asphalt, the Asphalt oil is the result of petroleum refining and Tar which is the result of coal distillation is not commonly used for pavement of the road kara faster harden, sensitive to temperature and toxic changes. Inland work we generally encounter two kinds of Galian-cut; If the soil from the excavation will be used for the pile we must first remove it from the vegetation and the topsoil should be removed, the thickness of this layer is generally as thick as 10-30 cm. This work is called Top Soil Stripping. Whether or not the soil/dug material is used for the pile will be tested by the laboratory. Thus, in this case, the material may be used for embankment after there is a result or a written statement from the laboratory. Excavation Technique: Each will stop work wherever possible when attempted rain come water not stagnant. Because, if the water stagnant resulting in difficult work and will further affect the quality/classification of the material.