Numerical investigation of the mechanical response of semi-rigid base asphalt pavement under traffic load and nonlinear temperature gradient effect
TL;DR: In this article, the authors investigated the distribution of the mechanical parameters in three new semi-rigid pavement structures with typical functional and structural requirements, specially designed to withstand various distresses of semirigid pavements.
About: This article is published in Construction and Building Materials.The article was published on 2020-02-28. It has received 44 citations till now. The article focuses on the topics: Axle load.
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TL;DR: In this article, the authors developed IRI prediction models for semi-rigid pavements in single-carriageway roads, where only segments with completely known pavement details were employed, i.e., a section where the complete structure of existing layers above the subgrade.
34 citations
TL;DR: In this article , a method of combining indoor experiments with finite element (FE) simulations for strain measurement in asphalt pavement is developed, and the results demonstrate that the FE simulation is also effective for long-term dynamic loading tests.
34 citations
TL;DR: In this article, the structural behavior of layered asphalt pavements subjected to dynamic moving wheel loads is studied and a structural model is proposed for the future design of more durable pavement structures.
Abstract: Understanding the structural behavior of layered asphalt pavements subjected to dynamic moving wheel loads is a crucial requirement for the future design of more-durable pavement structures...
20 citations
TL;DR: In this article, the mechanical response of HAP under vehicle-temperature coupled load was analyzed using the finite element method, which indicated that concrete between adjacent pipes bears large tensile stress, therefore, is likely to occur in those areas.
17 citations
TL;DR: In this article, the rutting prediction model embedded in the Chinese specification was based on the test results of labo-test results of the semirigid base asphalt pavement (SBAP).
Abstract: Rutting is the main distress of the semirigid base asphalt pavement (SBAP). The rutting prediction model embedded in the Chinese specification was based on the rutting test results of labo...
10 citations
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6,510 citations
TL;DR: Schapery and Park as discussed by the authors presented an approximate analytical interconversion method for linear viscoelastic material functions based on a Prony series representation using experimental data from selected polymeric materials.
552 citations
01 Jan 1944
TL;DR: In this paper, the theory of stress in a two-layered system was developed in accordance with the MATHEMATICAL Theory of ELASTICITY and is presented in order to reveal some of the fundamental relations existing between the PHYSICAL FACTORS, which control the LOAD-SETTLEMENT RELATIONS.
Abstract: THEORIES OF LAYERED SOIL DEPOSITS ARE REVIEWED. THE THEORY OF STRESSES ARE DISPLACEMENTS IN A TWO-LAYERED SYSTEM WAS DEVELOPED IN ACCORDANCE WITH THE METHODS OF THE MATHEMATICAL THEORY OF ELASTICITY AND IS PRESENTED IN ORDER TO REVEAL SOME OF THE FUNDAMENTAL RELATIONS EXISTING BETWEEN THE PHYSICAL FACTORS, WHICH CONTROL THE LOAD-SETTLEMENT RELATIONS, AND IN ORDER TO PROVIDE A PRACTICAL METHOD OF ANALYSIS FOR THE DESIGN OF AIRPORT RUNWAYS. THE THEORY REVEALS THE CONTROLLING INFLUENCE OF TWO IMPORTANT RATIOS ON THE LOAD-SETTLEMENT CHARACTERISTICS OF THE TWO-LAYER SYSTEM: (1) THE RATIO OF THE RADIUS OF THE BEARING AREA TO THE THICKNESS OF THE REINFORCING OR PAVEMENT LAYER, AND (2) THE RATIO OF THE MODULUS OF THE SUBGRADE TO THAT OF THE PAVEMENT, FOR PRACTICAL DESIGN PURPOSES, THE THEORETICAL RESULTS WERE EVALUATED NUMERICALLY AND EXPRESSED IN BASIC INFLUENCE CURVES, GIVING VALUES OF THE SETTLEMENT COEFFICIENT IN TERMS OF THESE BASIC RATIOS. THE SETTLEMENT COEFFICIENT IS APPLIED AS A SIMPLE MULTIPLYING OR CORRECTION FACTOR TO THE BOUSSINESQ EQUATION FOR SURFACE SETTLEMENT AT THE CENTER OF A CIRCULAR FLEXIBLE BEARING AREA. THE DESIGN FOR AIRPORT RUNWAYS INVOLVES THE SELECTION OF SUITABLE TYPES OF PAVEMENT CONSTRUCTION AND THE DETERMINATION BY THE INFLUENCE CURVES FOR THE TWO-LAYER SYSTEM OF THE THICKNESS REQUIRED TO GIVE ADEQUATE SUPPORT TO AIRPLANE WHEEL LOADS AND REASONABLE LENGTH OF SERVICE. FIELD LOAD TEST CHECKS OF QUALITY AND STRENGTH CAN BE MADE DURING CONSTRUCTION ON: (1) THE NATURAL SUBGRADE TO DETERMINE TENTATIVELY THE THICKNESS OF BASE COURSE AND PAVEMENT REQUIRED, (2) TOP OF THE BASE COURSE TO CHECK THE QUALITY AND STRENGTH AT THIS STAGE OF CONSTRUCTION, AND (3) TOP OF THE FINISHED PAVEMENT TO CHECK THE EFFECTIVE SUPPORTING CAPACITY OF THE WHOLE PAVEMENT CONSTRUCTION.
231 citations
TL;DR: Park and Schapery as mentioned in this paper proposed an approximate interconversion method based on the characteristic mathematical properties of the narrow-band weight functions involved in the interrelationships between broad-band material functions.
227 citations
TL;DR: In this paper, a three-dimensional finite element (FE) model was developed to simulate pavement responses to vehicular loading at different temperatures and speeds, and compared with field-measured pavement responses from the Virginia Smart Road.
Abstract: The objective of this study was to characterize hot-mix asphalt (HMA) viscoelastic properties at intermediate and high temperatures and to incorporate laboratory-determined parameters into a three-dimensional finite element (FE) model to accurately simulate pavement responses to vehicular loading at different temperatures and speeds. Results of the developed FE model were compared against field-measured pavement responses from the Virginia Smart Road. Results of this analysis indicated that the elastic theory grossly underpredicts pavement responses to vehicular loading at intermediate and high temperatures. In addition, the elastic FE model could not simulate permanent deformation or delayed recovery, a known characteristic of HMA materials. In contrast, results of the FE viscoelastic model were in better agreement with field measurements. In this case, the average error in the prediction was less than 15%. The FE model successfully simulated retardation of the response in the transverse direction and rapid relaxation of HMA in the longitudinal direction. Moreover, the developed model allowed predicting primary rutting damage at the surface and its partial recovery after load application.
184 citations