bitumen

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bitumen

a series of natural and artificial dry petroleum products. When combined with pitch and used as a flooring it may contain sufficient phenol to cause poisoning in pigs fed on the floors.
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These two bitumens have similar softening point, but they differ in their penetration value and in their chemical composition.
The effect of reactive polymers, Elvaloy AM and Elvaloy 4170, on the conventional properties of the base bitumens can be seen in Table 2.
Most of the tested polymer modified bitumens exhibit high value of the elastic recovery, which confirms results from microstructure image analysis (homogenous matrix with rounded particles was found in this analysis).
EN 12591:2009 Bitumen and bituminous binders--specifications for paving grade bitumens.
The supplementation of the produced HMA mixture with the granules of RAP saves expensive virgin aggregates and bitumen binder, improves environmental protection, reduces power consumption (Alkins et al.
Bitumen binder properties change due to irreversible oxidation processes, influencing on its aging, as well as due to the changes in its chemical composition.
The deviations of bitumen content in HMA mixture if we take it from the amount specified by the JMF are inevitable, taking into account the HMA mixing technology errors, emerging on account of a particular AMP structure, the state of a used equipment, drawbacks of the control system, the operator's work, HMA segregation, as well as the errors made in taking HMA samples and their testing (Petkevicius and Sivilevicius 2008).
Thus, batchers of mineral materials and bitumen are used at the AMP to ensure the design of HMA composition in industrial HMA production.
Surface tension for selected bitumens (Drelich, 1993; Drelich et al.
To recover bitumen from the oil sands, both surface mining and in situ technologies are currently used.
Index of compressive strength at 50[degrees]C is 43% higher than in case of using the initial bitumen, and 28% higher than in polymer modified binder, indicating a more reliable performance of asphalt concrete pavements using RBV at high summer temperatures.
3]), which their essential properties are the resistance to flexion crack; and their thermal stability of copolymers EVA used in bitumen and acetic acid's modification.