논문 상세보기
pp.121-128
PURPOSES : The purpose of this study is to evaluate an asphalt mixture via field application to utilize basalt aggregates produced on Jeju Island for a warm mix asphalt (WMA).
METHODS : Using commercially available WMA additives, an indoor experiment is conducted on low- and high-void aggregates among basalt aggregates on Jeju Island. The physical properties of the WMA mixture are evaluated using one solid type and two liquid types of WMA additive. To evaluate the applicability of the WMA additives, air void, saturation, aggregate void, Marshall stability, flow number, indirect tensile strength, and toughness tests are performed. For the field application of WMA using basalt aggregates, three types of pavements (HMA, WMA-Solid, and WMA-liquid) are constructed. When applying the pavements in the field, an anti-stripping agent is incorporated to improve the water resistance while considering the characteristics of the basalt aggregate. Samples are acquired via plant and field coring to evaluate the properties of the materials applied in the field.
RESULTS : In the indoor test for analyzing the applicability of the commercialized WMA additives to basalt aggregates, all tests except the indirect tensile strength test show results that satisfy the standards. All test results, including that from the indirect tensile strength test, satisfy the standard values in the test that uses the sample material obtained from the plant. Similarly, in the test with field cores, all test results satisfy the standard values. Therefore, the experimental value in the field application is generally higher than the test value in the indoor experiment. It is inferred that this is due to the difference between the basalt aggregates used in the indoor and field experiments, as well as the addition of the anti-stripping agent.
CONCLUSIONS : Basalt aggregates produced on Jeju Island can be used for WMA pavements, as demonstrated via indoor experiments and field applications. However, owing to the characteristics of basalt aggregates, a method for improving water resistance should be considered, and tests to determine the indirect tensile strength should be performed using various basalt aggregates. In addition, because various basalt aggregates exist owing to the diverse geology characteristics of Jeju Island, they should be evaluated via more experiments and field applications.
1. 서론
2. 중온 첨가제의 현무암 골재 적용성 평가
2.1. 중온아스팔트 첨가제 적용성 평가 방법
2.2. 중온아스팔트 첨가제 적용성 평가 결과
3. 현무암 골재 사용한 중온아스팔트 포장 현장 적용
3.1. 현장적용 대상구간
3.2. 현장적용 방법
4. 현장적용 결과
4.1. 플랜트 아스팔트 혼합물 물성 평가
4.2. 현장 채취 코어 시편의 물성 평가
5. 결론
REFERENCES
