Improvement of Mechanical Properties of Rubberized Cement-Stabilized Macadam by Optimization of Rubber Particle Gradation
View abstract on PubMed
Summary
This summary is machine-generated.Replacing natural aggregates with waste rubber particles in cement-stabilized macadam (CSM) improves road performance. Optimized rubber gradation enhances toughness and crack resistance, offering a sustainable construction solution.
Area Of Science
- Materials Science
- Civil Engineering
- Environmental Science
Background
- Natural aggregate consumption in construction poses environmental challenges.
- Waste rubber utilization offers a sustainable alternative for material replacement.
- Cement-stabilized macadam (CSM) is a widely used construction material.
Purpose Of The Study
- To investigate the feasibility of using waste rubber particles in CSM.
- To optimize rubber particle gradation for enhanced material properties.
- To evaluate the road performance of rubberized cement-stabilized macadam (RCSM).
Main Methods
- Incorporation of five different rubber particle gradations into CSM.
- Mechanical testing including compressive and flexural strength tests.
- Evaluation of toughness, crack resistance (freeze-thaw, fatigue, shrinkage), and resilient modulus.
Main Results
- RCSM with 1.18-4.75 mm rubber particles showed strength closest to CSM.
- Optimized rubber gradation increased ultimate strain by up to 1.83 times.
- RCSM with 1.18-2.36 mm rubber particles demonstrated superior fatigue life, frost resistance, and shrinkage behavior.
Conclusions
- Waste rubber particles can effectively replace natural aggregates in CSM.
- Optimized rubber gradation significantly enhances the toughness and durability of RCSM.
- RCSM with specific rubber particle sizes offers improved road performance and sustainability.
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