With this maintenance method, the existing road surface is fully resurfaced with a heated asphalt mixture in order to restore the surface of roads with a relatively low volume of heavy-vehicle traffic.

This construction method involves building a composite rigid layer on the subgrade using a high-strength geo-grid and restraining members. It prevents the pavement from collapsing due to an earthquake and inhibits the formation of cracks and bumps in the asphalt pavement road surface. This allows emergency vehicles to travel on the road immediately after an earthquake, thereby helping to accelerate the initial response to any urgent call to save lives and transport supplies.

This is a road base material which is made using a highly rigid asphalt mixture. Because the rigidity is much greater than that of ordinary road base, the load on the existing subbase is reduced, the asphalt pavement can be rendered more durable, and its service life can be extended.

MARRON ASPHALT is a generic term for asphalt mixtures that have been colorized with a red-earth pigment, which imparts a maroon (chestnut) color. Mixtures with MARRON in the name include Marron Guss (Gussasphalt), Marron Dick (thin layer), Marron Porous (permeable), and Marron Cork (elastic).

Water-retentive pavement is a pavement made by injecting and filling the voids of open-grained asphalt pavement with special cement milk (cool grout) that has a large water-retaining capacity. Utilizing the heat of evaporation when the water retained in the pavement evaporates helps inhibit increases in the temperature of the road surface. Especially ideal for mitigating the heat island effect in urban areas.

Fine gravel or crushed stone is spread over the surface of a coarse permeable asphalt pavement.

This colored hot mix asphalt is prepared using a petroleum resin-based decolorizing binder and colored with pigments. The paving method is the same as that which is used for ordinary asphalt pavement.

This water-permeable colored hot mix asphalt is prepared using a petroleum resin-based decolorizing binder and pigments and other coloring agents. It is a water-permeable version of Perfect Color M.

Natural pea gravel is used as the main aggregate, and the natural color and shape of the material are expressed on the surface of the pavement without coloring. In addition to using a decolorizing binder, there is also a method of using a mixture of ordinary asphalt and removing the asphalt mortar on the surface to create the texture of natural gravel. Permeable and non-permeable types are available.

This is an elastic pavement made by mixing natural cork pellets into an asphalt mixture. The unique elasticity of cork provides an appropriate amount of softness and cushioning to help make the pavement feel pliable when walking on it. Marron Cork, which is chestnut-colored because of the use of a red-earth pigment, is also available.