crctia - Mang Tia 1 45 BITUMINOUS MATERIALS AND MIXTURES...

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Unformatted text preview: Mang Tia - 1 - 45 BITUMINOUS MATERIALS AND MIXTURES Mang Tia, Professor of Civil and Coastal Engineering, University of Florida ______________________________________________________ 45.1 Introduction ......................................................................................................... 45.2 Bituminous Materials .......................................................................................... 45.2.1 Types of Bituminous Materials Used in Pavement Construction 45.2.2 Conventional Tests on Asphalt Cements and Their Significance 45.2.3 Conventional Methods of Grading and Specifications of Asphalt Cements 45.2.4 Superpave Binder Tests 45.2.5 Superpave Binder Specification 45.2.6 Effects of Properties of Asphalt Binders on the Performance of Asphalt Pavements 45.2.7 Types and Grades of Cutback Asphalts 45.2.8 Types and Grades of Emulsified Asphalts 45.3 Bituminous Mixtures .......................................................................................... 45.3.1 Types of Bituminous Mixtures used in Pavement Construction 45.3.2 Effects of Aggregate Characteristics on Performance of Asphalt Pavements 45.3.3 Volumetric Properties of Asphalt Mixtures 45.3.4 Design of HMA Mixtures Defining Terms ........................................................................................................... References ................................................................................................................... For Further Information .............................................................................................. Tables ……………………………………………………………………………….. Figures ………………………………………………………………………………. Mang Tia - 2 - 45.1 Introduction The term bituminous materials is generally used to denote substances in which bitumen is present or from which it can be derived [Goetz and Wood, 1960]. Bitumen is defined as an amorphous, black or dark-colored, (solid, semi-solid, or viscous) cementitious substance, composed principally of high molecular weight hydrocarbons, and soluble in carbon disulfide. For civil engineering applications, bituminous materials include primarily aphalts and tars . Asphalts may occur in nature (natural asphalts) or may be obtained from petroleum processing (petroleum asphalts). Tars do not occur in nature and are obtained as condensates in the processing of coal, petroleum, oil-shale, wood or other organic materials. Pitch is formed when a tar is partially distilled so that the volatile constituents have evaporated off from it. Bituminous mixtures are generally used to denote the combinations of bituminous materials (as binders), aggregates and additives....
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This note was uploaded on 05/26/2011 for the course CGN 6505 taught by Professor Mang during the Spring '11 term at University of Florida.

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crctia - Mang Tia 1 45 BITUMINOUS MATERIALS AND MIXTURES...

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