There are generally three distinct types of pavers available in the market today which are used interchangeably by most professions without regard to their unique traits. Permeable, pervious and porous pavers are the three distinct types that come with unique characteristics. Before selecting the right paver for your construction need, it’s important to evaluate the project design and the installation needs.
The goal of using pavers in construction
The main aim of using pavers in construction is to control runoff at the source as well as reduce downstream erosion. In the case of permeable pavers, water is circumvented around the paver with void spaces being filled with aggregates.
Permeable pavers are made of a composition of either fired clay brick or concrete. Permeable is a general term that describes paving methods used in the construction of walkways and parking lots. This system takes into account movement of air around the paving material allowing infiltration of water. To ensure lasting solution after installation of the paving system, it’s important to conduct routine maintenance check-ups.Most permeable designs have architectural appearance and are able to bear both heavy and light traffic.
Porous pavers come in a variety of materials and designs. The selection of the structure relies on the traffic, load and surface materials. Other than load support, the cellular grid within the porous pavers reduces the compaction of the soil to maintain constant permeability and infiltration.
The pervious pavers allow water to percolate through instead of running off the surrounding areas. As water runs through, the pavers are able to filter urban pollutants such as grass providing room for the ground to breath. The pavers also allow the tree roots and supporting microbes to interact. It’s important not to confuse pervious pavers with homogenous blinders. The pavers are made from natural stones that are bonded together in a factory controlled environment. Most manufacturers implement latest innovations such as the non-volatile organic compound polymer making this paver 90 percent more permeable compared to the porous pavers.
In most construction projects, at least 18% of the projects surface area is required for an effective project drainage and Storm water Management which in turn reduces the maintenance area. The pervious pavers are commonly used in storm water conveyance system. If pervious surfaces are installed correctly and are maintained appropriately then they would take over the functional features of most traditional pavements.
According to scientific research, pervious pavers have been linked to water quality degradation and are recognized runoffs and reduces substitute for normal pavements in the development and redevelopment of parking areas. This is the case in the construction of overflow parking and those associated with office buildings, recreational facilities and shopping centers. The use of pervious pavers has also been found useful in reduction of irrigation of area planting which is based on the seepage of rain into the subsoil. It also requires less land set and cost in the development of retention basin.