통계분석을 통한 골재입도와 동탄성계수 상관도 평가 = Evaluation of Correlation between Aggregate Gradation and Dynamic Modulus with Statistical Analysis

다국어 초록 (Multilingual Abstract)

In recent, lots of researches for mechanical-empirical design concept for asphalt pavement are on going. AASHTO 2002 Design
Guide in USA and KPRP(Korean Pavement Research Program) in Korea are under developing. In these programs, the mechanical
properties of hot mix asphalt are a key role for design and analysis. Unfortunately, there is no proper database on the mechanical
properties of hot mix asphalt, such as dynamic modulus. The use of dynamic modulus has couple of good advantages which
is based on temperature, traffic loading and frequency on pavement. In this research, the verification of the relationship between
maximum nominal aggregate size and dynamic modulus has been carried out. Also, test specimen size effect on dynamic modulus
has been conducted. Considering the limitation of laboratory testing machine in Korea, test specimen with 100mm diameter and
150mm height is recommended for dynamic modulus test. Also, as the maximum nominal aggregate size increases, the dynamic
modulus of hot mix asphalt increases.

다국어 초록 (Multilingual Abstract)

In recent, lots of researches for mechanical-empirical design concept for asphalt pavement are on going. AASHTO 2002 Design
Guide in USA and KPRP(Korean Pavement Research Program) in Korea are under developing. In these programs, the mechanical
properties of hot mix asphalt are a key role for design and analysis. Unfortunately, there is no proper database on the mechanical
properties of hot mix asphalt, such as dynamic modulus. The use of dynamic modulus has couple of good advantages which
is based on temperature, traffic loading and frequency on pavement. In this research, the verification of the relationship between
maximum nominal aggregate size and dynamic modulus has been carried out. Also, test specimen size effect on dynamic modulus
has been conducted. Considering the limitation of laboratory testing machine in Korea, test specimen with 100mm diameter and
150mm height is recommended for dynamic modulus test. Also, as the maximum nominal aggregate size increases, the dynamic
modulus of hot mix asphalt increases.

참고문헌 (Reference)

1 이관호, "화강암 골재를 이용한 아스팔트 혼합물의 동탄성 계수 예측방정식" 대한토목학회 26 (26): 425-433, 2006

2 Pellinen, T. K., "Use of Stiffness of Hot-Mix Asphalt as a Simple Performance Test" 2002

3 Brigison, "Evaluation of the Gradation Effect on the Dynamic Modulus" 1929 : 193-199, 2005

4 Brigison, Sholar, "Evaluation of a Predicted Dynamic Modulus for Florida Mixtures" 1929 : 200-207, 2005

5 "AASHTO 2002 Design Guide Draft - 2.4 Modulus of Elasticity for Major Material Groups, NCHRP Project 1-37A"