Effects of Separation Geotextiles in Unpaved Forest Roads on Control Measurements Using the Light Weight Deflectometer

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F25%3A106187" target="_blank" >RIV/60460709:41320/25:106187 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/1999-4907/16/11/1650" target="_blank" >https://www.mdpi.com/1999-4907/16/11/1650</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/f16111650" target="_blank" >10.3390/f16111650</a>

Result language

angličtina

Original language name

Effects of Separation Geotextiles in Unpaved Forest Roads on Control Measurements Using the Light Weight Deflectometer

Original language description

Geosynthetics are increasingly used in forest road construction for their potential to improve structural performance and reduce material consumption. However, little is known about their influence on dynamic modulus measurements derived from Light Weight Deflectometer (LWD) testing. This study investigates how different geotextiles affect stiffness measurements immediately after construction and two years later. Five reconstructed forest roads in the Czech Republic were divided into control and geotextile-reinforced subsections (PP150 with geogrid, PP200, and PP800). Modulus differences between the surface and subgrade (S-SG) and differences after two years (S2-SG) were analysed using permutation ANOVA, Cohen's d, and linear mixed-effects models. The results showed significant short-term reductions in measured modulus for PP150 and PP800, which diminished over time. Only PP800 maintained a strong effect at the two-year mark. Interaction effects with base material types revealed potentially adverse synergies, particularly between PP800 and vibrated gravel. These findings suggest that as LWD is commonly used during road construction for quality control, these early misleading readings may lead to unnecessary over-compaction or increased layer thicknesses, resulting in elevated construction costs and a higher carbon footprint, which counteract the sustainability goals often associated with geosynthetic use. The study highlights the need for long-term monitoring and method refinement in evaluating geosynthetic-reinforced unpaved roads.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

40102 - Forestry

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

FORESTS

ISSN

1999-4907

e-ISSN

1999-4907

Volume of the periodical

16

Issue of the periodical within the volume

11

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

12

Pages from-to

1-12

UT code for WoS article

001624402400001

EID of the result in the Scopus database

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