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The Influence of Waste Carpet on the Structural Soil Characteristics in Pavement Granular Layer

Author(s): Mohammad M. Khabiri

Journal: EnvironmentAsia
ISSN 1906-1714

Volume: 4;
Issue: 2;
Start page: 38;
Date: 2011;
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Keywords: Environment Problem | Waste Carpet | Pavement Layer | Unconfined Compressive Strength | Soil Property.

Solid waste materials can be left out of environment in different ways or can be used again. As an example of waste fiber materials is the fibers reselling from producing carpet which are made in Iran in largest quantity. These materials are added to soil and granular materials and improve their various properties as compressive and tensile strengths. In present study, the result of previous researches are collected and presented, then, they are used to analyses the effect of using from waste materials in subgrade on highway pavement performance. By using analytical software and results of testing, tensile strain under asphalt layer and compressive strain on subgrade of pavement containing these materials are calculated and after that they are compared together. Next the allowable frequencies of loading for different pavement models are calculated by using existing formula. The results indicate that adding 1.5% of waste fiber to pavement subgrade increases the allowable frequency of loading to 15%.
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