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Ice-Crush-Pave is a pavement made of asphalt mixture mixed with 3 - 5 wt% of rubber chips of 1- 8mm in grain size. This physical anti-freezing pavement controls road freezing and secures the traveling safety of vehicles in winter.

Rubber chips that dot the pavement surface deform under the load of passing vehicles to promote the breakup and removal of snow and ice on the pavement. Reduction in the number of skid accidents and deform under the pressure of passing vehicles and promotes efficiency in snow removal can be expected

1) Rubber chips protrude partially from the pavement, accounting for 10 to 20% of the pavement surface area. High anti-freezing performance can be expected.

2) Even after the pavement is graded by snowplows and other snow removal devices, the rubber chips will appear from inside the pavement mixture, so the pavement maintains its anti-freezing effectiveness.

3) The rubber chips have high elasticity at low temperatures, allowing ice to be crushed very effectively. Ice-Crushing-Pave contributes to the recycling of resources, because materials recovered from other industries are reused for the asphalt mixture.

4) For Ice-Crushing-Pave mixture, it is possible to use production and construction techniques used for other conventional hot asphalt mixtures.

繝ｻAnti-freezing performance To verify the effectiveness of Ice-Crush-Pave in terms of promoting ice breakup, an evaluation by ice sheet destruction test was done.
In this test, a 1-millimeter-thick ice sheet was created on a pavement specimen, and a wheel (a solid tire) traveled over the sheet in a low-temperature room at -5邃�. The anti-freezing effectiveness was evaluated in terms of the area of broken ice as a share of the total area.
For Ice-Crush-Pave, the area of broken ice accounted for 15.5% of the total area. Based on this test result, the effectiveness of Ice-Crush-Pave in controlling freezing was verified. (For dense-graded asphalt, the area of broken ice accounted for 0% of the total area.)

Suitable locations

Ice-Free is an asphalt pavement that facilitates manual snow removal and secures safe walking spaces. Sodium chloride or other anti-freezing agents that are added to the pavement mixture elute onto the pavement surface, preventing ice from becoming attached. It窶冱 easy to re-expose the pavement surface. (This is the pavement窶冱 窶徭now removal assistance窶� functionality.)

Features

A thin overlay of just 15 millimeters thick on an existing pavement maintains the desired functionality for about 5 years.
When the snow removal assistance functionality has decreased, it can be restored by grading about 5 millimeters of material from the surface.
Ice-Free pavement, which is a thin layer, can be constructed for about as much as conventional asphalt pavement of 30 millimeters thick.

Locations where snow is removed manually, such as at sidewalks and pedestrian paths near public facilities, and on school-commuting roads.