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Aggregates are an important component of asphalt concrete and their properties control its performance to a large extent. It is important to consider the parent rocks from which the aggregates are produced. This study examines the properties of granite and dolomite aggregates and the Marshall properties of asphalt concrete produced from the aggregates. The tests conducted on the mineral aggregates include aggregate abrasion value (AAV); aggregate impact value (AIV); aggregate crushing value (ACV) and water absorption. Marshall test was carried out on the asphalt concrete produced using the two aggregates. The results showed that the AAV for granite and dolomite were 26.0% and 65%, respectively. The AIV values were 6.72% and 31.1% and the ACV values were 7.5% and 22.3%, respectively for the aggregates from granite and dolomite. The AAV, AIV, and ACV results indicate that the dolomite aggregates are weaker than the granite. The Marshall stability values for granite and dolomite are 13.39 kN and 13.24 kN and flow values at the maximum stability are of 2.64 and 2.14 mm, respectively. This indicates that they are suitable for use as aggregates for asphalt concrete.

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Comparative Study of Effects of Dolomite and Granite on the Marshall Properties of Asphaltic Concrete

  • 会议论文

  • 出版模式：

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  • 发表日期：

    2026年

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  • Olumide Moses Ogundipe,
  • Ofem Ofem Ubi,
  • James Olugbenga Aribisala,
  • Oluwasegun Oluyemi Aluko,
  • Daniel Oluwafemi Oguntayo

摘要

Aggregates are an important component of asphalt concrete and their properties control its performance to a large extent. It is important to consider the parent rocks from which the aggregates are produced. This study examines the properties of granite and dolomite aggregates and the Marshall properties of asphalt concrete produced from the aggregates. The tests conducted on the mineral aggregates include aggregate abrasion value (AAV); aggregate impact value (AIV); aggregate crushing value (ACV) and water absorption. Marshall test was carried out on the asphalt concrete produced using the two aggregates. The results showed that the AAV for granite and dolomite were 26.0% and 65%, respectively. The AIV values were 6.72% and 31.1% and the ACV values were 7.5% and 22.3%, respectively for the aggregates from granite and dolomite. The AAV, AIV, and ACV results indicate that the dolomite aggregates are weaker than the granite. The Marshall stability values for granite and dolomite are 13.39 kN and 13.24 kN and flow values at the maximum stability are of 2.64 and 2.14 mm, respectively. This indicates that they are suitable for use as aggregates for asphalt concrete.