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      <doi>10.14455/ISEC.2025.12(1).MAT-15</doi>
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        <article-title>SUSTAINABLE ASPHALT MIXTURES USING LATHE MACHINE WASTE POWDER (LMWP):  AN EXPERIMENTAL STUDY</article-title>
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      <author>MOHAMMAD ALHARTHAI</author>
      <aff>Dept of Civil Engineering, College of Engineering, Science and Engineering Research Center, Najran Univ, Najran, Saudi Arabia<br /></aff>
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      <title>ABSTRACT</title>
      <p>This research intends to investigate and evaluate the effects of waste materials from industry, namely lathe machine waste powder (LMWP) on the durability and strength properties of asphalt mixtures.  The research involved the preparation of asphalt mixtures specimens using one aggregate gradation with a nominal maximum aggregate size (NMAS) of 12.5 mm, three types of aggregates regular aggregates (RA), recycled concrete aggregate (RCA), and lathe machine waste powder (LMWP) and one type of asphalt binder.  Regular aggregates (RA) passing through sieve sizes of 12.5 mm, 9.5 mm, 4.75 mm, and 2.36 mm were partially replaced with recycled concrete aggregate (RCA) at various replacement percentages from 0% to 50%, with and without the addition of lathe machine waste powder as a fine aggregate (sized between 0.075 mm and 1.18 mm).  Cantabro test, air void content test and Marshall stability test were conducted to evaluate the durability and strength properties of asphalt mixtures.  Based on the test results, it was noted that there was no significant difference in Marshall stability and air void content when regular aggregates (RA) were partially replaced with (RCA) and (LMWP).  This research contributes to the development of sustainable pavement materials by promoting the use of alternative aggregates.</p>
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        <italic>Keywords: </italic>Sustainable material, Asphalt performance, Recycled aggregate, Industrial waste materials, Mechanical properties</p>
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      <hpdf>MAT-15</hpdf>
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