Conventional, often onerous restricted pavement design methods and road construction practices present ever-growing challenges to pavement engineers, contractors and owners. Road construction budgets are under increasing pressure to deliver improved value and performance for less money.
It is common knowledge that the practice of installing a “typical pavement section” is proving to be problematic. The excessive requirements for plant, labour and material resources along with lengthy contractual programmes can be challenging. This can cause additional risk, time and money due to increasing traffic loads on the highway network. Further issues include inadequate pavement structures, lower maintenance budgets and increasing material costs.
These issues have forced highway engineers to seek value-engineered alternatives to the conventional strategies they have traditionally relied on to evaluate their projects. In addition, a growing number of highway engineers are adopting the Tensar Pavement Optimisation System, incorporating Tensar TriAx® geogrid, to optimise pavement design and construction techniques.
The system combines Tensar TriAx geogrid with aggregate fill to create a mechanically stabilised layer (MSL) that is significantly stiffer and more robust than a conventional unbound aggregate layer. The enhanced structural characteristics of the MSL allow the designer to obtain greater performance from the whole pavement structure, which results in more economical construction, reduced risk, improved performance, reduced waste and longer life.