It is found that the asphalt properties are more governed by the bitumen properties than in the case of macadam. Fig.1: Representation of Asphalt Mix and its Characteristics. Fig.2: A Representation of Macadam Mix and its Characteristics. Use of Bituminous Material in Flexible Pavement.

  • Asphalt - Pavement Interactive

    Asphalt Physical Properties. Asphalt can be classified by its chemical composition and physical properties. The pavement industry typically relies on physical properties for performance characterization although an asphalt's physical properties are a direct result of its chemical composition.

  • What are the properties of bitumen? - Quora

    Sep 21, 2017· Chemical properties of Bitumen: 1. Adhesion: Bitumen has the ability to adhere to a solid surface in a fluid state depending on the nature of the surface. The presence of water on the surface will prevent adhesion. 2. Resistance to Water: Bitumen ...

  • Genan - rubber modification of asphalt and bitumen is ...

    MODIFICATION OF ASPHALT AND BITUMEN IN ROAD CONSTRUCTION. Throughout the world, both local and national authorities know that it is good business to use modified asphalt in new road projects. It is cost-efficient both medium- and long-term, because roads are less exposed to rutting and cracking.

  • Asphalt - Wikipedia

    Asphalt, also known as bitumen (UK: / ˈ b ɪ tj ʊ m ɪ n /, US: / b ɪ ˈ tj uː m ə n, b aɪ-/), is a sticky, black, and highly viscous liquid or semi-solid form of petroleum. It may be found in natural deposits or may be a refined product, and is classed as a pitch. Before the 20th century, the term asphaltum was also used.

  • Investigation of the physical and rheological properties ...

    Apr 10, 2019· Trinidad lake asphalt has been used as a modifier to blend with the traditional petroleum bitumen. The aim of this work was to evaluate the effect of Trinidad Lake Asphalt (TLA) on physical and rheological properties of Trinidad Lake modified asphalt (TLMA).

  • Pavement materials: Bitumen - NPTEL

    CHAPTER 23. PAVEMENT MATERIALS: BITUMEN NPTEL May 8, 2007 23.3 Requirements of Bitumen The desirable properties of bitumen depend on the mix type and construction. In general, Bitumen should posses following desirable properties. The bitumen should not be highly temperature susceptible: during the hottest weather the mix should

  • 3 Bitumen Properties, Production, and Transportation by ...

    Bitumen Properties, Production, and Transportation by Pipeline 27 processing technologies to transform the mined bitumen into a commer- cially viable refinery feedstock.11 During the 1990s, thermally assisted in situ recovery methods were introduced in the WCSB to exploit the large reserves of bitumen located too deep for surface mining.

  • Bituminous Materials – Types, Properties and Uses in ...

    Mar 08, 2017· For each case mentioned, the property of the bitumen change. It is found that the asphalt properties are more governed by the bitumen properties than in the case of macadam. Fig.1: Representation of Asphalt Mix and its Characteristics. Fig.2: A Representation of Macadam Mix and its Characteristics. Use of Bituminous Material in Flexible Pavement

  • Asphalt, Bitumen and Tar – Types, Difference and Comparison

    Difference between Asphalt, bitumen and tar, their types and comparisons of their properties is discussed. Asphalt, bitumen and tar have similar properties generally used for pavements Construction. The asphalt is a mixture which consists alumina, lime, silica and asphaltic bitumen…


    Studies of the risk of cancer associated with bitumens and bitumen emissions have mainly focused on workers employed in roofing, paving and mastic-asphalt operations. These operationsoccur in very different locations and have different histories regarding the materials used and potential coexposures.

  • onlinepubs.trb.org



    the manufacture of asphalt. If any given asphalt has a compositional deficiency, the producer can determine how to modify the asphalt and remedy the deficiency. It has become obvious that deficiencies vary from one asphalt to another. It is important to note that many chemical properties will not correlate with performance so it is a major goal to

  • and Asphalt Mixture Properties - mdpi.com

    bitumen 60/70 involved analyzing the impact of high temperature 175–225 C for 3 h on the properties of bitumen and asphalt concrete with this bitumen. It was concluded that after exceeding a bitumen heating temperature of 189 C the properties of the asphalt mixture tested with the Marshall method experienced detrimental changes.

  • Physico-mechanical properties of asphalt concrete ...

    Oct 30, 2017· It was theorised that when CBs are soaked in low viscosity bitumen and added to the asphalt mix, a small amount of bitumen from the CBs would become mobile and would increase the mechanical and physical properties of AC, where a class C170 bitumen would have the lowest viscosity and a class C600 bitumen would have the highest viscosity . 2.1.2.

  • Asphalt Properties - AAPT

    A Model for Relating Filler Properties to Optimal Behavior of Bituminous Mixtures. Ishai, I.; Craus, J. and Sides,A. V.49-80, p.440. Mechanical Properties of Filler-Bitumen -Mixes at High and Low Service Temperature. Huschek, S. and Angst, C.H. V.49-80, p.530. The Effect of Various Fillers on the Mechanical Behavior of Asphalt and Asphaltic ...

  • Properties of Bitumen – Civil Ocean

    Properties of Bitumen. Adhesion: Bitumen has the ability to adhere to a solid surface in a fluid state depending on the nature of the surface. The presence of water on the surface will prevent adhesion. Resistance to Water: Bitumen is water resistant. Under some conditions water may be absorbed by minute quantities of inorganic salts in the bitumen or filler in it.

  • asphalt | Components, Development, Properties, & Facts ...

    Asphalt is also used for roofs, coatings, floor tilings, soundproofing, waterproofing, and other building-construction elements and in a number of industrial products, such as batteries. For certain applications an asphaltic emulsion is prepared, in which fine globules of asphalt are suspended in water. See also bitumen.

  • Properties of Asphalt Concrete - bitumen.globecore.com

    Asphalt concrete is a mineral bituminous construction material produced by compacting of asphalt concrete mix. The latter usually consists of gravel, sand, mineral powder and oil bitumen heated to 120-160ºС and mixed in the proper ratios.

  • UNIT - 2 BITUMEN AND TAR - bmsit.ac.in

    Many properties of bitumen, particularly the non-Newtonian flow properties suggest that bitumen is a colloidal system. The colloidal nature of bitumen is due to the presence of asphaltenes in association with high molecular weight material from the maltenes fraction, form a disperse phase.

  • $GGLWLYHV$SSOLFDWLRQ - iopscience.iop.org

    element affecting resultant properties of asphalt mixture. The basic purpose of bitumen binder is to "bind" the aggregate particles together. The visco-structural properties of bitumen, varying with temperature, predetermines he bitumen for using. The bitumen binder is expected to have such properties that ensure resistance of asphalt ...

  • Physical and Chemical Characterization of Asphalt (Bitumen ...

    physical and chemical properties of asphalt (bitumen) fume and vapor in hot mix asphalt roadway paving operations. Area and personal air samples were taken using real-time equipment and extractive sampling and analytical methods to determine worker asphalt exposure, as well as to characterize the properties of the particulate and vapor phase ...

  • Oil Sands Geology & the Properties of Bitumen | Oil Sands ...

    Jul 4 Oil Sands Geology & the Properties of Bitumen ... BITUMEN ≠ TAR OR ASPHALT: Although bitumen looks and smells like tar or asphalt, natural occurring bitumen is technically different. Tar is the residue obtained from coal distillation while asphalt is the residue from petroleum distillation process.

  • Spills of Diluted Bitumen from Pipelines: A Comparative ...

    FIGURE 2-1 Components of typical crude oils.. are attributable mainly to the great influence of biodegradation on the heavier crude oil and bitumen. Saturated Hydrocarbons. Under the anaerobic conditions prevailing during formation of the oil sands, the saturated hydrocarbons are mostly biodegradable, the aromatic hydrocarbons much less so, and the resins and asphaltenes not at all.

  • Chapter 2 Asphalt and Asphalt Paving Materials - apai.net

    properties differ greatly, petroleum asphalt should not be confused with coal tar. Whereas petroleum asphalt is composed almost entirely of bitumen, the bitumen content in coal tar is relatively low. The two materials should be treated as separate entities. One of the characteristics and advantages of asphalt as an engineering construction and

  • Properties of Bitumen & Bituminous Materials | Adhesion ...

    The flow properties of bitumens vary considerably with temperature and stress conditions. Deterioration, or loss of the desirable properties of bitumen, takes the form of hardening. Resultantly, decrease in adhesive and flow properties and an increase in the softening point temperature and coefficient of thermal expansion. Softening point:

  • PROPERTIES OF BITUMEN ~ Construction Updates

    The water resistance properties of bitumens depend upon the degree of impermeability and water absorption inherent in them. Even a very thin layer (1/64 inch) in a continuous film provides an excellent water barrier. In practical applications the degree of impermeability will be affected by the nature of the filling materials and the continuity of the bituminous coating.

  • Chemical and Physical Composition of Bitumen

    Chemical Composition of Bitumen: Molecular weight wise, bitumen is a mixture of about 300 - 2000 chemical components, with an average of around 500 - 700. Elementally, it is around 95% carbon and hydrogen (± 87% carbon and ± 8% hydrogen), and up to 5% sulfur, 1% nitrogen, 1% oxygen and 2000ppm metals.