KOREASCHOLAR

PURPOSES: The objective of this study is to evaluate of the effect of thermal segregation reduction in asphalt paving using material transfer vehicles (MTVs).
METHODS: Asphalt paving using MTVs was carried out, and the paved surface temperature was measured using an infrared camera. The amount of thermal segregation was estimated from temperature variations.
RESULTS : The transportation of hot mix asphalt (HMA) using dump trucks caused temperature segregation that persisted in the paving surface if an MTV was not used. The average temperature variation was 8.58% in paved surfaces where an MTV was not used. However, the temperature variation was 3.10%, 2.86%, and 4.53% for the base layer, inter-layer, and surface layer, respectively, when an MTV was used.
CONCLUSIONS: The use of an MTV in asphalt paving reduces thermal segregation approximately 2.3 times in an asphalt mat via a remixing process and also allows for a smoother work process because the paver never needs to stop to receive HMA. However, MTV equipment without pre-heating devices requires careful temperature control during the warm up process at the MTV during construction in the winter.

ABSTRACT
 1. 서론
 2. MTV를 적용한 아스팔트 포장 포설 시공성
 3. MTV 적용에 따른 열분리 억제 효과
 4. 결론
 REFERENCES

• 권기철(동의대학교 토목공학과 교수) | Kweon Gichul 교신저자