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| What is Modified Bitumen? |
| Hot bitumen is mixed with aggregates, fillers and additives to create a range of surface suited for their individual requirements. In asphalt production bitumen plays a key role. The properties of paving bitumen and bituminous mixes can be improved by addition of certain additives or blends of additives. These additives are called "Bitumen Modifiers" and the bitumen premixed with these modifies is known as "Modified Bitumen". |
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Advantages of Modified Bitumen
Lower susceptibility to temperature variations. |
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Higher resistance to deformation at elevated pavement temperature |
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Better age resistance properties |
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Higher fatigue life of mixes |
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Overall improved performance in extreme climatic conditions |
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Reduction in overall life cycle cost of overlays |
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Higher stiffness modulus |
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Better resistance to creep |
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Types of Modified Bitumen |
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• Natural Rubber Modified Bitumen (NRMB)
• Crumb Rubber Modified Bitumen (CRMB)
• Polymer Modified Bitumen (PMB) |