Crumb Rubber Modified Bitumen(CRMB) Case Study
The disposal of rubber wasters from a number of industrial applications presents a major environmental challenge.
The non biodegrable natures of the millions of tonnes of vehicle tyres disposed each year leads to environmental pollution.
Pavement performance studies show that road construction using rubber wastes generates significant economic and environment benefits including clearing of existing large waste dumps and reducing extraction of existing natural resources.
Moreover, it improves oxidaton of road surfacing, reduces the cost of construction and improves the cohesive strength of asphalt resisting the natural aging of roads.
CRMB has been used the world over for the improvement of binder characteristics for use in wearing courses of flexible pavements.
Studies globally have validated that the addition of crumb rubber to bitumen produces binders with improved resistance to combat pavement distresses such as rutting, fatigue cracking, thermal cracking etc.
The most remarkable aspect of CRMB is not only does it lead to superior engineering material, it also brings to bear an environmentally friendly product. CRMB offers a solution to the waste disposal problem of the millions of tires creating rubber mountains the world over.
The addition of waste tires in place of costlier virgin polymers results in greater cost savings, lower energy consumption and lessened environment impact.
Superior performance of highways globally are achieved at a lower than than other polymer alternatives.