BITUMEN EMULSION: Bitumen emulsions are a dispersion of very fine bitumen particles in an aqueous medium. The specifications were revised in the years 1962 and 1992. This kind of bitumen is more reliable than others due to its advantages and properties. Bitumen obtained from refineries is used as paving bitumen which conforms to IS 73.Bureau of Indian Standards has released third revision of IS 73: 2006 recently. Bitumen 30/40 is used in specialized applications like airport runways and … The characteristics of this grade confirm to that of S 35 grade of IS-73-1992. The Bureau of Indian Standards (BIS) introduced paving grade bitumen specifications (IS: 73-1950) for the first time in the year 1950 and classified it on penetration. 1, 2 & 3) Earlier there were three grades of bitumen manufactured in India conforming to IS 73 1992. The word is derived from the Ancient Greek ἄσφαλτος ásphaltos. In this third revision viscosity grade is accepted instead of penetration grade. Viscosity grade bitumen in four different types including VG10, VG20, VG30 and VG40 is the most widely used bitumen in India, which has been replaced by bitumen penetration grade according to the Indian Standard (IS:73). Viscosity Grade Bitumen Iran Bitumen Viscosity Grade Bitumen Viscosity Grade VG-10, VG-20, VG-30, VG-40 Viscosity Grade Bitumen (Asphalt) is a Bitumen grade mostly used as a Paving Grade and it’s suitable for road construction and for the asphalt pavements producing with premier attributes. Bitumen Bitumen is a thermoplastic material and its stiffness is dependent on temperature. As per IS 73:2013 specification, Bitumen is classified into four types based on absolute viscosity. PARAMETER SPECIFICATION STD.METHOD Typical Quality 1 Absolute Viscosity at 60°C , Poises 800, min IS 1206(Part 2) 1500 2 Kinematic viscosity at 135°C 250, Min IS 1206(Part 3) 330 3 Flash Point (COC) Deg.C, 220 Min. The Bureau of Indian Standards (BIS) introduced paving grade bitumen specifications (IS: 73- • Bitumen 30/40: This is the hardest of all the grades and can withstand very heavy traffic loads. The temperature-vs-stiffness relationship of bitumen is dependent on the source of crude oil and the method of refining. SPECIFICATION FOR BITUMEN (VG 10) (IS 73 - 2006) Sl.No. A bitumen emulsion is obtained by blending bitumen with water and an additive called an emulsifier. IS 73 : 1992 (Reaffirmed 1998) Edition 3.3 (2002-10) Indian Standard PAVING BITUMEN — SPECIFICATION ( Second Revision ) (Incorporating Amendment Nos. The emulsified suspension contains dispersed minute particles of bitumen (that is, oil in water). Application Paving of roads, surfacing airfield runways and taxi tracks, hydraulic application such as canal lining river bank protection, dam construction and sea defenses. These liquid products are functional in use and are widely popular in road construction and maintenance. 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, 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. Standard NS dated 2073 which is derived from IS 73:2013.