CHANGE IN RESILIENT MODULUS OF BASE LAYERS IN ASPHALT PAVEMENT STRUCTURES OVER TEXAS

The properties of materials change over time and the same case happens for the HMA pavement. The various components of HMA pavement such as surface, base, sub-base, and sub-grade have time related functions. In particular, the base layer which is the immediate layer below the surface, comprising of...

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Bibliographic Details
Published in:Stavební obzor 2020-07, Vol.29 (2), p.182-191
Main Authors: Bastola, Nitish Raj, Souliman, Mena
Format: Article
Language:English
Subjects:
Asphalt pavements
base layer
hma pavement
Material properties
Moisture content
Plastic limit
Ratios
resilient modulus
Thickness
Time dependence
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Summary:The properties of materials change over time and the same case happens for the HMA pavement. The various components of HMA pavement such as surface, base, sub-base, and sub-grade have time related functions. In particular, the base layer which is the immediate layer below the surface, comprising of various materials such as crush aggregates and HMA also have a time related function. Among the numerous properties of the base layers which are dependent with time is its resilient modulus. Therefore, this paper correlates the effect of the change in resilient modulus with time including the various varying conditions such as rutting, thickness of base layer, precipitation, traffic, temperature, IRI index, wheel path length cracked, cracking percentage, crack length, liquid limit, plastic limit, optimum moisture content, and % fine passing below 200 sieve. Each individual factor has different effects over the resilient modulus of the base layer, but their effects are more severe when they act at once in a pavement structure.
ISSN:1805-2576
1805-2576
DOI:10.14311/CEJ.2020.02.0016