A study on applicationof textile surface material for shock absorbing pavement Watanabe, Tadashi ; Murayama, Masato
Språk: Engelska Språk: Franska Serie: ; topicVI-62Utgivningsinformation: XIth international winter road congress 2002, Sapporo [Japan] / XIe congres international de la viabilite hivernale 2002, Sapporo [Japon]. Paper, 2002Beskrivning: 9 sÄmnen: Bibl.nr: VTI 2002.0071Location: Abstrakt: In long tunnels in snowy regions, motor vehicles have to remove and reinstall tire chains at the areas before and after the tunnel to prevent them from being broken in time of snowfall, and within the tunnel they run with tire chains removed. In the heavy traffic season, traffic jams result from the removal and reinstallation of tire chains. In order to clear up such traffic jams, it has been desired to develop a pavement that allows vehicles to run with tire chains installed (shock-absorbing pavement). In this study, we investigated a textile surface material for possible application for shock-absorbing pavement in collaboration with the Japan Highway Public Corporation. The features of this material are as follows: (1) High elasticity allows absorbing impact loads of running vehicles; (2) Great tensile strength and high tear resistance ensure good resistance to abrasion by chains and high durability; (3) Colour brightening is possible, and tunnel brightness comparable to that of concrete pavement can be expected; and (4) Construction is simplified (prefabrication). In this study, necessary functions for use in long tunnels were at first investigated in laboratory tests and, based on the investigation results, a test pavement was constructed in an actual tunnel to evaluate its serviceability. The results of the study are given below. Results of laboratory tests: (1) The maximum depth of wear measured by enhanced wear test is nearly one-half of that of concrete; (2) Chain damages are far less than those on concrete pavement; and (3) The rebound ratio measured using golf balls and the measured value of impact acceleration are considerably lower than those of concrete, proving excellent shock absorbing ability. Test pavement (actual road in tunnel): The test pavement was constructed in the Ishiuchi tunnel section of the Kan-Etsu Expressway. The results are as follows. (1) No such damages as pot-holes and stripping were observed, proving excellent adhesion; (2) No rutting was observed even two years after construction, proving excellent abrasion resistance; and (3) The skid resistance tended to decrease slowly. From the above results, it can be concluded that this material is sufficiently applicable for shock-absorbing pavement though the problem of skid resistance remains to be solved.Aktuellt bibliotek | Status | |
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Statens väg- och transportforskningsinstitut | Tillgänglig |
In long tunnels in snowy regions, motor vehicles have to remove and reinstall tire chains at the areas before and after the tunnel to prevent them from being broken in time of snowfall, and within the tunnel they run with tire chains removed. In the heavy traffic season, traffic jams result from the removal and reinstallation of tire chains. In order to clear up such traffic jams, it has been desired to develop a pavement that allows vehicles to run with tire chains installed (shock-absorbing pavement). In this study, we investigated a textile surface material for possible application for shock-absorbing pavement in collaboration with the Japan Highway Public Corporation. The features of this material are as follows: (1) High elasticity allows absorbing impact loads of running vehicles; (2) Great tensile strength and high tear resistance ensure good resistance to abrasion by chains and high durability; (3) Colour brightening is possible, and tunnel brightness comparable to that of concrete pavement can be expected; and (4) Construction is simplified (prefabrication). In this study, necessary functions for use in long tunnels were at first investigated in laboratory tests and, based on the investigation results, a test pavement was constructed in an actual tunnel to evaluate its serviceability. The results of the study are given below. Results of laboratory tests: (1) The maximum depth of wear measured by enhanced wear test is nearly one-half of that of concrete; (2) Chain damages are far less than those on concrete pavement; and (3) The rebound ratio measured using golf balls and the measured value of impact acceleration are considerably lower than those of concrete, proving excellent shock absorbing ability. Test pavement (actual road in tunnel): The test pavement was constructed in the Ishiuchi tunnel section of the Kan-Etsu Expressway. The results are as follows. (1) No such damages as pot-holes and stripping were observed, proving excellent adhesion; (2) No rutting was observed even two years after construction, proving excellent abrasion resistance; and (3) The skid resistance tended to decrease slowly. From the above results, it can be concluded that this material is sufficiently applicable for shock-absorbing pavement though the problem of skid resistance remains to be solved.