| 摘要 |
A pyrotechnic patty for rapidly attaching a raised pavement marker to a paved roadway surface is disclosed. The pyrotechnic patty consists of a stable mixture of oxidizer and fuel formed into a fattened shape that, once ignited, deflagrates rapidly producing a large amount of heat. The heat melts an adhesive pad that, after cooling and solidifying, permanently attaches the pavement marker to the paved surface. Preferably, the adhesive pad is formed of bitumen and the pyrotechnic patty is formed of a composition, in predetermined proportions, of potassium nitrate, aluminum nitrate, shredded newspaper, aluminum, and sulfur. The pyrotechnic patty is controllably ignited by passing an ignition current through a nichrome wire. The pyrotechnic patty is particularly suitable for use in an automatic marker attachment system. |
