아스팔트 콘크리트 변형강도 시험에서의 적정 하중재하속도 선정 연구

초록

This study was carried out to select proper loading speed for deformation strength (SD) of asphalt mixtures. Kim test using loading head of diameter(40mm) with radius(10mm) was conducted to measure SD in different loading speed (10mm/min, 30mm/min, 50mm/min, 70mm/min) and wheel tracking test was also conducted. The regression analyses between the SD values and WT results were carried out by loading speeds. Higher SD was observed as increasing loading speed. This means that loading speed is a high influencing factor on SD. The loading speed of 30mm/min was found as an optimum for better correlation with WT results than any other speeds from the regression analysis between SD and wheel tracking test results. SD value measured at other loading speed than 30mm/min has to apply the conversion coefficients.

키워드