A basic study on the mix design and field compaction process of SMA pavements for appropriate performance

JunSeong Choi; Jongeun Baek; YeJi Jung; Jongseong Park

doi:10.22702/jkai.2025.15.1.13

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2025 Vol.15, Issue 1 Preview Page Next Page

Scientific Paper

A basic study on the mix design and field compaction process of SMA pavements for appropriate performance SMA 포장의 적정성능 구현을 위한 실내 배합설계 및 현장 다짐 공정 개선에 관한 기초 연구

4 July 2025. pp. 136-148

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Abstract

This study aims to establish a systematic VCA(Voids in Coarse Aggregates)-based mix design and compaction procedure to optimize the performance of Stone Mastic Asphalt (SMA) pavements. The mix design process focuses on quantitatively evaluating coarse aggregate interlocking to enhance structural stability and resistance to rutting. Laboratory tests were conducted to determine dry-rodded VCA (VCADRC) and mixture VCA (VCAMIX) values based on ASTM C29 procedures, with the optimal mix satisfying the interlocking condition of VCAMIX<VCADRC. Volumetric properties were also evaluated to select the optimal asphalt content. In addition, field trials incorporating tire rollers were performed to assess the applicability of the proposed design in actual construction conditions. The results demonstrate that the VCA-based mix design framework effectively improves aggregate interlocking and structural performance, while tire roller application further contributes to achieving consistent compaction quality on site. This integrated approach provides a practical foundation for enhancing the durability and reliability of SMA pavements.

Keywords

SMA

Mix design procedure

VCA_MIX

VCA_DRC

Tire roller

Compaction quality

References

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Jung, Y.J., Choi, J.S., Baek, J.E. and, Park J.S. (2025). “Basic research on construction improvement methods for the appropriate performance of SMA pavements”, Korean Society of Road Engineers, Spring Conf., pp. 127-129.

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Information

Publisher :KOREAN ASPHALT INSTITUTE
Publisher(Ko) :한국아스팔트학회
Journal Title :Journal of the Korean Asphalt Institute
Journal Title(Ko) :한국아스팔트학회지
Volume : 15
No :1
Pages :136-148
Received Date : 2025-06-13
Revised Date : 2025-06-22
Accepted Date : 2025-06-25
DOI :https://doi.org/10.22702/jkai.2025.15.1.13

Journal of the Korean Asphalt Institute ISSN:2234-0785(Print) 2635-9553(Online) 한국아스팔트학회지

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