Color Black Jai Polymer And Rubber Modified Bitumen, UsageApplication Road Construction

This invention relates to the procedure for the preparation of a polymer and rubber based modified binder, Which is usefulfor the construction of roads catering to heavy traffic and also for the formation of airfields surfacing, Besides its application as binder for stress absorbing membrane sam and stress absorbing membrane interlayer sami for sealing of cracks, Preventive maintenance of flexible pavement and delaying reflective cracking. Modified bitumen performs better than ordinary bitumen in high rain fall area and in situations where the aggregates are prone to stripping. Flexible pavements constitute major portion of existing road network and airfields in india. An extensive highway network with desired high speed corridors and air, Fields constructed with long lasting pavement and overlays are felt essential. The expansion of the economy of a country depends largely upon efficient transport system with minimal possible hindrance to road user due to frequent maintenance needs. The quality and enduring quality of pavement along with overlays and renewals therefore restored, Must be to facilitate reduce road user cost and achieve road safety. Increased number of traffic loads with over loading in excess of permissible limits, Higher tyre pressure have caused widespread problems with flexible pavement of national highways. The available 80/100, 60/70 or 30/40 grade or vg grade bitumen produced at our refineries are not suitable for high traffic intensity roads and airfield pavement due to extremely high tyre pressure of aircrafts. The statistics of various overlay i renewals performance suggested that useful life of bituminous overlay has declined from an average value of 8, 10 years in the past to about 3, 4 years in recent years. Hence under the prevailing heavy traffic in general, Conventional overlays are not, And extreme climatic conditions meeting durability requirement. The accelerated deterioration of flexible pavement overlays or burdens the, Renewals prematurely maintenance budget and poses fund s constraints on which act, Using binders as multigrade binders and also offer resistance to deformation and cracking. The binders should also enable the pavement to have longer fatigue life to resist the repeated application of high axle loads and avoid fissures or reflective cracking. Research carried out on the available bitumens from indian refineries indicated that these are not suitable for airfields catering to boeing 747 class or a380 of aircraft. This item acts as also well known that, If polymer in a small quantity when included in 80/100, 60/70 or 30/40 grade vg result in, Grade bitumen that features, A product a fatigue life 10, 18 times higher than conventional 80/100, 60/70 or 30/40 grade vg grade bitumen. This binder is also determined to be capable to repair when applied, Fissures effectively over extensively cracked flexible or rigid pavement. Plastomeric thermoplastic based modified bitumen are not considered suitable for sam & sami. Extensive road trials conducted by crri and elsewhere globally proved that life of road can be extended 50 to 100% times, Resulting in enormous savings in pavement materials and funds.