<P>The road sector produces the highest level of greenhouse gas, directly, through fossil energy used in mining, transportation,cheap road repairing heating machine paving works... and indirectly through the emissions coming from vehicles. Indeed, the constant increase in the number of road vehicles – and therefore of the traffic – generates a substantial increase in pollution and noise disturbances.</P>
<P>Besides, huge challenges await the road construction sector such as a cheaper and better production, construction and of course maintenance, all the more as raw materials are becoming scarce and the environmental laws are getting stricter regarding air pollution and noise disturbances. Like the rest of the sectors,bluefields tarred road construction the road construction sector needs to face the challenge of sustainability.</P>
<P>Before getting to the heart of the matter, let’s define the global concept of sustainability. Sustainability is the ability to meet our needs without compromising the ability of next generations to meet theirs. This concept integrates the economic, societal and environmental aspects. Sustainability can be also defined as a way to use a resource so that the latter is not depleted or permanently damaged. The 13th of August 2015 was the Earth Overshoot Day, which means that humanity has already spent the Earth’s budget for the entire year,walmart thermal register paper which proves that sustainability is hard to achieve.</P>
<P>One may wonder why we need sustainability. The reasons are quite obvious: the overall population is increasing (by 2050, the UN predict that the world population will reach 9.7 billion) and the amount of natural resources like crude oil, aggregates or iron core is finite. In this light, it seems like quite a challenge to reach sustainability in highway construction since the latter, by the nature of its activity,pavement crack router used for crack generates lots of energy and consumes a lot of fossil resources.Like many other sectors, the road construction sector is subject to different types of rating systems, to assess their endeavours to reach sustainability.</P>