Evaluation of Reclaimed Asphalt Pavement

2995 Words Jan 26th, 2018 12 Pages
These materials are obtained when asphalt pavements are removed for reconstruction, resurfacing, or to gain access to buried utilities. When properly crushed and screened, RAP consists of high-quality, well-graded aggregates coated by asphalt cement (FHWA 1998).
The collected RAP material used in the study is collected from Narela and was tested in the laboratory for the following properties: Determination of Bitumen Content (ASTM D-6307) Binder recovery through Abson Method (ASTM D 2172 and D 1856) Gradation of the recovered aggregates of RAP (IRC 37:2012 specifications)
Detailed description of these tests is provided in the following subsections.
(a) Determination of Bitumen Content
The RAP sample is heated in the furnace at the 538 C temperature until the difference between consecutive measured mass loss does not exceed 0.01 % of the sample mass for three consecutive 1-min intervals. This point shall be determined automatically by the furnace’s data collection system. The furnace’s data collection system shall measure and record automatically the aggregate mass of the sample after ignition to the nearest 0.1 g. The mass shall be obtained immediately upon completion of tests by subtracting the mass loss measured by the furnace from the initial mass of the mix. The corrected asphalt…
Open Document