01475730

Component

https://doi.org/10.3141/2363-12

http://scholar.google.com...1lez&publication_year=2013

From the literature, it is possible to find two trends regarding the stiffness evolution of foamed bitumen stabilized–recycled mixtures. The first trend indicates that once the foamed bitumen mix reaches a constant value because of the curing process, the stiffness decreases with time because of load cycles. The second trend indicates that stiffness remains constant after the curing process. In this research, the stiffness evolution of foamed bitumen mixes stabilized with different bitumen and cement contents was studied. The stiffness was measured by using the indirect tensile fatigue test. Results indicated that once the foamed bitumen mix reached a constant value because of the curing process, stiffness decreased or remained constant depending on the stress level applied to the foamed bitumen layer. If the stress level is lower than a specific value, the stiffness of the mix will remain constant at a value extremely close to the initial stiffness. If the stress level is greater than a specific value, the stiffness of the mix will decrease gradually. In addition, the reduction rate of the stiffness will be greater with higher stress level. The analysis of results from mixes with different bitumen and cement contents allows identification of the effect of both stabilizing agents in the long-term stiffness evolution.

01500235

13-4177

English

pp 105–112

2013

Transportation Research Record: Journal of the Transportation Research Board

9780309286794

Print

Figures (5) ; References (23) ; Tables (5)

Asphalt cement; Concrete curing; Fatigue tests; Foamed asphalt; Foamed materials; Granular materials; Load tests; Stabilized materials; Stiffness; Tension tests

Construction; Geotechnology; Highways; Materials; Pavements; I42: Soil Mechanics

TRIS, TRB, ATRI

Feb 5 2013 12:48PM

• Estimation of Time Rate of Settlement for Multilayered Clays Undergoing Radial Drainage
• Evaluation of Properties of Constructed Tubular-Steel Cast-in-Place Pilings
• Modeling In Situ Performance of Cement-Stabilized Granular Base Layers of Urban Roads
• Passive Force–Deflection Behavior for 0° and 30° Skewed Abutments
• Prediction of High Pile Rebound with Fines Content and Uncorrected Blow Counts from Standard Penetration Test
• Probabilistic Framework for Strength Limit and Service Limit Checks of Drilled Shafts Considering Soil Spatial Variability
• Pullout Resistance Factors for Inextensible Mechanically Stabilized Earth Reinforcements in Sandy Backfill
• Reinforcement Pullout Capacity in Mechanically Stabilized Earth Walls with Marginal-Quality Soils
• Reinforcement Tensile Behavior Under Cyclic Moving Wheel Loads
• Stabilization of High-Sulfate Soils by Extended Mellowing
• Use of Geothermal Deep Foundations for Bridge Deicing
• Use of Rapid-Hardening Cement for Controlled Low-Strength Materials for Pavement Applications