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<p>Stocking of waste tire piles is considered a main environmental, health, aesthetic and economical problem worldwide. The increased demand for reusing waste rubber has led to significant progress in employment of rubber as an aggregate in concrete. Employing crumb rubber as an aggregate in concrete manufacture is a promising green environmental solution. The main goal of this study is to examine the feasibility adding rubber waste as a fine aggregate to produce rubberized concrete with different cement contents. Four main mixes (C30, C35, C40, and C45) applying cement contents as (300, 350, 400, and 450&#xa0;kg/m3) respectively were cross-matched with nine rubber replacement percentages of (0, 5, 10, 15, 20, 25, 30, 40,and 50%). The experimental program consists of 360 cylinders, and 180 prisms were prepared and tested for compressive, split tensile and flexural strength, in agreement with the American society for Testing and Materials (ASTM) recommendations. The results reveal a marked reduction in all strengths with lower disposal of crumb rubber in high cement mixes, while an accepted reduction in strengths associated with higher disposal of crumb rubber in low cement mixes was recorded. Rubberized concrete with low rubber content is more convenient for Architectural, and low-strength concrete applications while rubberized concrete with high rubber content is not suitable for structural applications. Microscopic imaging was found to be a useful tool to explain the reduction of rubberized concrete strength under different loading conditions.</p>

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Assessment of rubberized concrete as a promising green building material

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月11日

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  • A. S. Sherbini,
  • H. S. S. Abou El-Mal

摘要

Stocking of waste tire piles is considered a main environmental, health, aesthetic and economical problem worldwide. The increased demand for reusing waste rubber has led to significant progress in employment of rubber as an aggregate in concrete. Employing crumb rubber as an aggregate in concrete manufacture is a promising green environmental solution. The main goal of this study is to examine the feasibility adding rubber waste as a fine aggregate to produce rubberized concrete with different cement contents. Four main mixes (C30, C35, C40, and C45) applying cement contents as (300, 350, 400, and 450 kg/m3) respectively were cross-matched with nine rubber replacement percentages of (0, 5, 10, 15, 20, 25, 30, 40,and 50%). The experimental program consists of 360 cylinders, and 180 prisms were prepared and tested for compressive, split tensile and flexural strength, in agreement with the American society for Testing and Materials (ASTM) recommendations. The results reveal a marked reduction in all strengths with lower disposal of crumb rubber in high cement mixes, while an accepted reduction in strengths associated with higher disposal of crumb rubber in low cement mixes was recorded. Rubberized concrete with low rubber content is more convenient for Architectural, and low-strength concrete applications while rubberized concrete with high rubber content is not suitable for structural applications. Microscopic imaging was found to be a useful tool to explain the reduction of rubberized concrete strength under different loading conditions.