Applications for FCIP include:
1.Remote data asynchronous replication to a secondary site.
2.Centralised SAN backup and archiving, although tape writes can fail if packets are dropped.
3.Data migration between sites, as part of a data centre migration or consolidation project.
The forms of bitumen are as follows:-
1. Cutback bitumen
Normal practice is to heat bitumen to reduce its viscosity. In some situations preference is given to use liquid binders such as Cutback bitumen. In Cutback bitumen suitable solvent is used to lower the viscosity of the bitumen. Cutback bitumen is used for cold weather bituminous road construction and maintenance.
2.Bitumen Emulsion
Bitumen emulsion is a liquid product in which in which a substantial amount of bitumen is suspended in a finely divided condition in an aqueous medium and stabilized suitable material The Bitumen emulsion may be of anionic type or cationic type. Three types of bitumen emulsion are available Rapid setting (RS), Medium setting (MS), and Slow setting (SS).
3.Cutback Bitumen
Cutback bitumen is obtained by blending bitumen blinder with suitable diluent or solvents in the required proportion to reduce its viscosity tobthe desired range. Cutback is available in three types, Rapid curing (RC), medium curing (MC), slow curing (SC).
4. Bituminous primers
In Bituminous primers the distillate is absorbed by the road surface in which it is spread. The absorption there for depends on the porosity of the surface.
Flexible pavement will transmit wheel load stresses to the lower layers by grain - to -grain transfer through the points of contact in the granular structure. The wheel load acting on the pavement will be distributed to a wear area, and the stress decreases with the depth. Taking advantage of this stress distribution characteristics the lower layers will experience lesser Magnitude of stress and less quality material can be used. Flexible pavements ate constructed using bituminous materials.
Types of Flexible pavement
1. Flexible pavement are layered systems with high quality expensive materials are placed in the top where stresses are high, and low - quality cheap materials are placed in lower layers.
2. Full depth asphalt pavement are constructed by placing bituminous layers directly on the soil subgrade .
3. Contained rock asphalt mats are constructed by placing dense/open graded aggregate layers in between two asphalt layers.
This is a penetration test developed by the California division of highway . For evaluating the stability of soil subgrade and other pavement materials. The test results have been correlated with flexible pavement thickness requirements of highway and airfield. CBR test may be conducted the laboratory in a prepared specimen in a mould or in situ in the field.
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