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Design Guide for Semirigid Pavements in China Based on Critical State of Asphalt Mixture
Publisher: American Society of Civil Engineers
Abstract: Semirigid pavement is a type of pavement structure in which a semirigid base layer, usually made up of cement-treated base (CTB) or cement-stabilized base (CSB), is overlaid with a top flexible layer of asphalt mixture. ...
Back-Calculation of Nonlinear Properties of Subgrade Using a New In Situ Nondestructive Testing Approach Based on Loading Sequence
Publisher: American Society of Civil Engineers
Abstract: This study aims to develop a new in situ nondestructive testing (NDT) method to determine nonlinear parameters of subgrade soils and to establish a method to calculate the subgrade design modulus. The new method collects ...
Analysis and Comparison of Different Impacts of Aging and Loading Frequency on Fatigue Characterization of Asphalt Concrete
Publisher: ASCE
Abstract: Asphaltic material is a kind of viscoelastic material, and its performance varies with test and materials conditions, such as stress states, temperatures, aging degree, gradations, and binders. The anti fatigue design of ...
Experimental Evaluation of Lateral Swelling Pressure of Expansive Soil Fill behind a Retaining Wall
Publisher: ASCE
Abstract: Lateral swelling pressure (LSP) of expansive soils included in the total lateral pressure (TLP) often results in instability and even sliding failure of retaining walls. In this study, a modified oedometer was developed ...
Synergy Effect of Attapulgite, Rubber, and Diatomite on Organic Montmorillonite-Modified Asphalt
Publisher: American Society of Civil Engineers
Abstract: Organic montmorillonite (OMMT) was obtained by reacting montmorillonite (MMT) with the surfactant cetyltrimethyl ammonium bromide (CTAB). The crystalline phases of MMT and OMMT were characterized by microscopic performance ...
Three-Dimensional Simulation of Aggregate and Asphalt Mixture Using Parameterized Shape and Size Gradation
Publisher: American Society of Civil Engineers
Abstract: Aggregate occupies at least three-quarters of the volume of asphalt mixture and can significantly affect the performance of pavement. The geometrical morphology influences the slippage and interlock among aggregates for ...
Prediction of Resilient Modulus of Compacted Cohesive Soils in South China
Publisher: American Society of Civil Engineers
Abstract: The resilient modulus has been used to characterize the stress–strain nonlinear behavior of subgrade soils and is the primary property needed for pavement design and analysis. The degrees of stress and moisture content ...