Pure bitumen refineries and manufacturing units

The use of bitumen in road construction for the production of asphalt and concrete mixtures and asphalt is one of the components of a plan. Over the past few years increasing the price of bitumen and accrued profits on some of the opportunists led to her hand and non-standard it is produced by various methods. Unfortunately, the use of this type of pitch is common in some projects.

Because the tar-like it has an appearance and physical state oil are pure, they are easy diagnosis is not possible. Non-standard bitumen are made using a variety of methods and processes. For example, a party of them using residues from the distillation of crude oil are produced. Others using hydrocarbon waste from the process of recycling industries Mnjmlhzayat acidic hydrocarbon oil, acid sludge, which are known, are made. Use of natural tar tar unsystematically other construction method is non-standard. Since the use of non-standard tar and harmful causes devastating effects of road it and asphalt industry is very high in the country, it is necessary to establish procedures to identify and realize they are acting. Therefore, it is necessary to identify the type of experiments with so-called bitumen from it can be taken.
Quality control of materials for bitumen and asphalt work done at least once in the beginning and during the performance of work and according to progress of the operation, monitoring device whenever it deems necessary tests will be carried out on it consumption.
it should be homogeneous when heated to 176 ° C floor and does not smoke.
Steam to heat the bitumen or oil pipes or electrical equipment should be used. The application of direct flame of fire that is in contact with it reservoirs body in any way is not permitted. Supervision is required to discharge direct fire from the flame to heat the bitumen tankers use, prevent, or contractor must refrain from discharging separated it such tankers.
The temperature of bitumen in reservoirs and pipes and when mixed with aggregates in the asphalt mixing plant should not exceed 175 ° C for pure it.
Tar and it tankers tankers workshop must be equipped with a thermometer. A thermometer at the bottom and one on the upper tank is installed. Bitumen asphalt plant heat detector should be installed so that whenever possible to control the temperature tar.
it is stored in steel tanks and concrete pools in the workshop. If you use the pool floor and walls should be covered with asphalt concrete and the roof completely from dust, rain and other pollutants reserved. Means of heating the bitumen must be anticipated at the bottom of the pool.
Asphalt plant must be equipped with devices that tar with the necessary percentage of the allowable range of variations (positive minus 1 /.)% Of the total weight of asphalt for round Vbafshar be broadcast on aggregate.
One of the armed Alhrah from 100 to 200 ° C show, should the discharge pipe it mixing unit in a location near a drain valve is installed. Asphalt pavement needed for each stage of production should not exceed 15 seconds after the last pitch Ghz discharge.
Instrument for measuring tar, it requirements which must be unloaded in each stage measurement accuracy is 1 kg.
Bitumen consumption in the mix (the prepared mix design) as well as workshops and storage tanks should be sampled according to the AASHTO 40T (at least 10 kg.).
it, hot asphalt work once at the beginning, and during the work must be done for every 2000 tons of it tested.
Graded asphalt road divided on the basis of the degree of penetration and performance specifications for grading the degree of influence on the ratings in Table 5-1 and are Jdvl6-1 performance on the basis of. The tables of Publication No. 234 as regulations asphalt pavements of roads not taken.
The spot test used for this purpose.
It is hoped that with the completion of the proposed methods and experiments of early detection of counterfeit bitumen asphalt plant before discharging it in tanks provided workshops.