소석회 첨가에 따른 투수성 아스팔트 혼합물의 성능 평가

The objective of this paper is to investigate the properties for permeability and dynamic resistance of the porous asphalt mixtures which consist of either liquefied lime or powder lime and is to conduct Impact Resonance Test (IRT) and Impact Hammer Resonance Test (IHRT) to proof the public trust in the point of civil engineering. For the performance of permeability, Constant Head Permeability Test based on Korean Industrial Standards of KS F 2322 was utilized for deducting the permeability coefficients of Hydrated-lime porous asphalt specimens. Non-destructive impact tests were conducted for the dynamic moduli. The resonance frequencies of mixtures can be obtained from the frequency analysis for high frequency impact. From the comparison of the resonance frequencies and the dynamic moduli obtained from IRT and IHRT, Root Mean Squared Error (RMSE) values of dynamic moduli obtained from IHRT indicated the maximum value of 1.16 GPa comparing to the results of IRT. The result of error analysis between IRT and IHRT results has Mean Absolute Percentage Error (MAPE) which was under 8%. To figure out the effect of additives, compared each porous asphalt mixture by using the result of constant head permeability test and dynamic moduli.