Want to become a member?  


New porous pavements should be inspected several times in the first few months after construction and at least annually thereafter. Inspections should be conducted after major storms to check for surface ponding that might indicate possible clogging.

It is recommended that vacuum sweeping be performed at least twice a year. In environments where larger amounts of fine materials are present, the frequency should be increased accordingly.

It is very important that sand and abrasives not be used for winter maintenance, as they will clog the pores; de-icing materials should be used instead. The University of New Hampshire’s research suggests that porous asphalt retards the formation of ice on the pavement surface, so that the use of de-icing compounds may be drastically curtailed.

In Europe and Japan, large pressure washing/vacuum equipment has been used to restore permeability on porous surfaces on roadways (referred to as open-graded friction courses in the US) that have become clogged. Little research has been done on restoring permeability to porous pavement structures.

If the porous pavement is damaged, it can be repaired using conventional, non-porous patching mixes, as long as the cumulative area repaired does not exceed 10 percent of the paved area.

Maintenance Bonus: 75 percent reduction in de-icing chemical use
The two photos below show a parking lot at University of New Hampshire one hour after plowing, with a close-up of the porous asphal tportion of the lot at bottom. Porous and non-porous areas were evaluated for the degree of snow and ice cover and the friction factor. A 75 to 100 percent reduction in salt application was possible. That is, with only 0 to 25 percent of the salt, the snow and ice cover on the porous asphalt was the same as on conventional dense-mix asphalt. This reduction can be achieved without compromising braking distance or increasing the chance of pedestrians slipping and falling. In a number of cases, it has been reported that no deicing chemicals are needed, and plowing alone is sufficient to remove snow from the paving surface.

Conventional asphalt one hour after plowing

















Porous asphalt one hour after plowing

If some happened with our soundness, we sure there is a solution to any situation in a medicament. Most significant factors for a good life is soundness. Factors that can predetermine your choice when you are ordering drugs are varied. There are divers efficient remedies available online. Very likely you know about medications that fights infection caused by bacteria. This type of drugs does not treat some infection such as the common cold. Other medicines are used to treat diabetes. Cialis is a medicine prescribed to treat various illnesses. What do you have to study about cialis buy online? This article tell more about the symptoms of erectile disfunction and where to buy cialis online. Sometimes men need medicines to resolve sexual malfunction. Sexual soundness problems can as a rule indicate serious problems in other area. Certain pop remedies can mean screwing with your erection. So if you are experiencing erectile problems, it is momentous to see a certified heartiness care provider immediately for a complete natural testing. The most common unwanted side effects of such medications like Cialis is headache. This is not a complete list of possible side effects and others may occur. If you would like advice about Cialis, one of pharmacists will make existing medications that are suitable for you to take. You will then be able to get the medicament