Abstract
The continuously increasing need for the strengthening of road pavement structures in Lithuania induces to implement new road reconstruction technologies, to look for new alternatives in laying structural pavement layers, to carry out research of road pavement structures in their real operational conditions. This article studies methods for determining structural pavement strength, assesses the strength measuring devices using static and dynamic methods. In order to identify and compare the accuracy of test data collected by using static and dynamic methods the comparative measurements were carried out on a base course of experimental road section by four measuring devices, i.e. static beam Strassentest, dynamic devices ‒ ZORN ZSG 02, light weight deflectometer Prima 100 and falling weight deflectometer Dynatest 8000. Further results of the research of this experimental road section, analysis and evaluation of these results will enable to select the most suitable measuring method for each structural pavement layer.
Highlights
Road pavement is one of the most important structural elements of road
The results indicated that there is a good correlation between portable falling weight deflectometer (PFWD) moduli and falling weight deflectometer (FWD) and the California Bearing Ratio (CBR) results (Kavussi et al 2010)
Experimental research showed that the measurements with all devices are suitable for determining deformation modulus on a base course of pavement structure
Summary
Road pavement is one of the most important structural elements of road. It is continuously affected by static and dynamic traffic loads, as well as climate change. Technical measures and methods for implementing the requirements of this Regulation are defined by the KPT SDK 07 Automobilių kelių standartizuotų dangų konstrukcijų projektavimo taisyklės (Regulations for the Design of Standardized Pavement Structures of Motor Roads). Lithuania has no single methodology approbated in the established order and defining the principles of strengthening design of asphalt concrete pavements on the existing roads. This article gives the research results of the first experimental road pavement section in the Lithuanian road history consisting of 27 different pavement structures using static and dynamic measuring methods on a base course of the pavement. Further results of the research of this experimental road section, analysis and evaluation of these results will enable to select road pavement structures the best corresponding to the climatic and traffic conditions in Lithuania
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