01372860

Component

Open-graded friction course (OGFC) is a special purpose mixture with the superior performance of permeability and noise reduction. OGFC mixtures consist of an open gradation, mostly of coarse size aggregate with little fines. Asphalt contents for OGFC mixtures are generally slightly higher than for dense-graded mixtures. This paper deals with the viability of using lignin fibers as an additive in OGFC mixtures. Draindown test results indicated that OGFC mixtures with the two kinds of fibers can both be effectively used to retard draindown of the binder and mineral filler. Mixture designs were performed for a range of 3.5¨C6.0% asphalt content. Laboratory tests including indirect tensile load tests, Cantabro test, soaking Cantabro test were carried out on OGFC mixtures to determine the tensile strength, anti-abrasion ability and durability. The test results indicated that OGFC mixtures with lignin fibers showed improvement in strength, improved resistance to abrasion, and reduce moisture susceptibility when compared with mixtures without fibers. Comparison of test performance of two different lignin fibers (Nano-scale and non-Nano) added to OGFC mixture shows that Nano-scale lignin Fibers is superior to the traditional fiber.

This paper was sponsored by TRB committee AFK40 Characteristics of Asphalt-Aggregate Combinations to Meet Surface Requirements. The DVD Table of Contents lists the title of this paper as "Characterization of Open-Graded Friction Course Mixtures Containing Nanoscale Lignin Fibers".

01362476

12-2532

English

9p

2012

Transportation Research Board 91st Annual Meeting

Digital/other

Figures; References; Tables

Abrasion resistance; Durability; Laboratory tests; Lignin; Mix design; Moisture content; Open graded aggregates; Tensile strength

Highways; Materials; I30: Materials

Transportation Research Board Annual Meeting 2012 Paper #12-2532

TRIS, TRB

Feb 8 2012 5:10PM