Granular surface and base layers of low-volume roads (LVRs) are frequently subjected to severe damage that adversely affects safety requires regular repair maintenance. Various stabilisation methods have been evaluated for mitigating improving serviceability LVR systems. However, few well-documented comparisons exist the field mechanical performance, durability construction costs different under same set geological, climate, traffic conditions. Therefore, present study was conducted identify...

For tackling high-gradient, localized, or singular boundary value problems, the concept of an adaptive-gradient (AG) element family is introduced to advance utility discretization methods. Capable encompassing regular and elements as special cases, a basic but versatile AG for multidimensional applications derived whose gradient singularity can be controlled parametrically handle wide variety functional behavior with standard mesh configurations. As illustrations, examples usage performance...

Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation S. Lin, J. C. Ashlock; A study on issues relating to testing of soils pavements by surface wave methods. AIP Conf. Proc. 17 May 2012; 1430 (1): 1532–1539. https://doi.org/10.1063/1.4716397 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar...

The main objective of this paper is to identify the most appropriate rehabilitation method for composite pavements and evaluate influence different factors reflective crack development in pavement by survival analysis. Four methods are evaluated: mill fill, overlay, heater scarification, rubblization. Survival analysis used four using three performance indicators: cracking, international roughness index (IRI), condition (PCI). Rubblization can significantly retard cracking compared with...

To improve the accuracy of shallow seismic shear wave velocity profiling, we propose a minimally invasive hybrid surface-and-borehole method that enhances detection higher modes Rayleigh dispersion data. The new combines techniques from multichannel analysis surface waves and simulation with one receiver (MSOR) methods to record components motion at as well depths within soil mass. performance proposed is demonstrated through computational experimental studies. We show individual can exhibit...

This paper presents a computational and experimental study on seismic stiffness profiling of layered pavement systems using the multi-channel analysis surface waves (MASW) simulation with one receiver (MSOR) testing procedures. Development new custom-programmed data acquisition system for MASW MSOR MATLAB software National Instruments hardware are detailed. A coupling method is presented, which was found to perform best among several methods examined by authors. The cross-correlation...

Granular-surfaced roads frequently experience severe surface damage and degradation, which adversely affects traffic safety significantly increases maintenance costs. The importance of the gradation plasticity granular-surfaced road materials have long been recognized. However, very few studies focused on quantifying effects resulting mechanical performance granular roadways. In this study, laboratory tests statistical analyses were conducted to quantify variations in materials. A...

This study evaluates three nondestructive testing (NDT) techniques for quality assessment of asphalt pavements. The NDT examined include an electromagnetic density gauge, a dynamic stiffness and geophysical surface wave tests measuring modulus. In-situ were carried out four representative paving projects covering range mixes traffic loads, cores extracted at the centre each location laboratory measurement A comprehensive correlation analysis was to examine performance method quantifying...

To solicit a fundamental understanding of past difficulties vibration sounding methods for granular soils, collaborative experimental and analytical study was developed to examine the performance dynamic surface plate load tests by scaled modelling. Focused on benchmark small-strain regime G max condition, multiple small-amplitude rigid square resting uniform dry sand were conducted large geotechnical centrifuge. A set basic results vertical rocking characteristics soil–plate system...

For more than 50 years, the resonant column test has been used to measure shear modulus and damping of soils for strains ranging from 10−5 % 0.5 %. most soils, is non-destructive, tests may be performed on same specimen at multiple confining stresses simulating in situ conditions near surface great depths. This paper makes use transfer function approach theory obtain simple solutions applies it two types apparatus: conventional fixed-base free top (including spring top) now referred as...

Loss of coarse aggregate is a common problem for granular roadways due to lack fine particles with binding capability. Chemical stabilization one the most commonly applied techniques solve issue aggregates in roadways. However, such methods are usually not economical and may pose environmental concerns as leaching heavy metals nitrates. Quarry fines by-product crushing process stones during production. They can be used alternative materials overcome while ensuring treatment sustainable,...

Abstract Forward modeling is of critical importance for inversion analysis surface wave methods to obtain shear‐wave velocity ( V S ) profiles soil sites. The dynamic stiffness matrix (DSM) method can provide forward Rayleigh waves simulate complex propagation in layered However, contamination from body and interference multiple modes reduce the accuracy theoretical dispersion curves, especially at irregular sites with embedded low‐velocity or high‐velocity layers. An analytical developed...

Abstract A continuum theory for an improved characterization of dynamic soil–structure interaction in the framework three‐dimensional elastodynamics is presented. Effective demonstrating importance integrating free‐field and near‐field effects under general soil foundation conditions, a compact two‐zone delineation medium proposed as quintessential mechanics perspective this class problems. Sufficient to deliver practical resolution some perennial analytical experimental conflicts,...

A fundamental experimental research programme on the dynamic behaviour of surface foundations sand in general planar motion and use centrifuge modelling soil–structure interaction studies is presented. Pursued with dual purpose extending conventional formulation test programmes as well generating a physical database sufficient parametric variations key aspects, an extensive study to explore problem small-amplitude regime described. Through comparison generated data those from sequential...

Granular roads are important to the economies of rural communities, as they provide access urban areas and comprise one main transportation systems for hauling agricultural products. However, such may be subjected heavy traffic loads from machinery animal husbandry equipment, suffer severe damage seasonal freeze-thaw cycles which cause various types deterioration including material loss, potholes, frost boils, rutting, loss crown. Reconstruction maintenance these can costly depending on...