01336694

Component

https://doi.org/10.3141/2210-04

http://scholar.google.com...+Kim&publication_year=2011

The fracture characteristics of semirigid asphalt concrete (SRAC) prepared from a highly porous asphalt mixture (matrix) with 18% to 22% air voids and cement paste were evaluated. Two asphalt binders and several polymer-modified cement pastes that were grouted into the porous matrix were used. The SRAC beam specimen was prepared, and an initial notch was made by cutting with a saw at the bottom center of each beam for the static three-point bending (3PB) test at low temperatures (10°C, 0°C, and −10°C). Fracture toughness (K sub IC) was calculated with 3PB test data to examine the fracture resistance of the SRAC. The two SRAC binders, a normal asphalt (PG 64-22) and a polymer-modified asphalt (PG 76-22), exhibited significant differences in K sub IC values within the temperature and the paste type. The SRAC using PG 76-22 showed K sub IC values 17% higher than the SRAC using PG 64-22 at −10°C. Therefore, the SRAC using PG 76-22 binder is expected to have better low-temperature fracture resistance than the SRAC using PG 64-22 binder in the region where the low temperature commonly reaches −10°C.

01356813

11-2320

English

pp 30-36

2011

Transportation Research Record: Journal of the Transportation Research Board

9780309167468

Print

Figures (8) ; Photos (1) ; References (15) ; Tables (3)

Asphalt concrete; Bituminous binders; Cement paste; Fracture properties; Low temperature; Polymer asphalt; Porosity

Bending tests; Semi-rigid

Highways; Materials; Pavements; I31: Bituminous Binders and Materials

TRIS, TRB, ATRI

Feb 17 2011 6:08PM

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• Effects of Asphalt Mixture Properties on Permanent Deformation Response
• Effects of Nonuniform and Three-Dimensional Contact Stresses on Near-Surface Cracking
• Evaluation of Dynamic Modulus Predictive Equations for Southeastern United States Asphalt Mixtures
• Evaluation of Predictive Models for Estimating Dynamic Modulus of Hot-Mix Asphalt in Oklahoma
• Factors That Affect Cracking Performance in Hot-Mix Asphalt Mix Design
• Laboratory Evaluation of Asphalt Binders and Mixtures Containing Polyphosphoric Acid
• Permanent Deformation Model Based on Shear Properties of Asphalt Mixtures: Development and Calibration
• Reduced Testing Protocol for Measuring the Confined Dynamic Modulus of Asphalt Mixtures
• Search for a Laboratory Test to Evaluate Crack Resistance of Hot-Mix Asphalt
• Significance of Confined Dynamic Modulus Laboratory Testing for Asphalt Concrete: Conventional, Gap-Graded, and Open-Graded Mixtures