01336746

Component

Cement concrete pavement offers long-term service life and excellent applicability for heavy traffic. Its purchase being easier than asphalt, this pavement presents remarkable cost-effectiveness and durability. However, adequate repair of the cement concrete pavement is more difficult than the asphalt pavement in case of degradation or damage. Cracking in the concrete pavement stands as the major cause of such problem and the demand of repair on road sites is growing every day. This emphasizes the urgency to secure technologies for the control of early and long-term cracking. Accordingly, this study evaluates the exploitability of the single use and hybrid use of micro-fibers usually adopted in fiber reinforced concrete and 5 types of long macro-fibers considering the 32 mm coarse aggregates used in the mix proportions of concrete pavement by means of various types of mechanical tests. As a result, tensile performance by macro fiber was remarkably improved in single mixing. In mixture of S-00-PV2, about 21% strength was increased. In hybrid mixing, it was checked that performances of compressive strength, tensile strength and bending toughness were improved by fiber mixing. And H-N1-ST2 mixture had the best performance in equivalent bending stress and toughness index I5.

The DVD lists the title of this paper as: Fundamental Study on Macrofiber and Hybrid-Fiber-Reinforced Concrete Pavement.

01329018

11-3014

English

19p

2011

Transportation Research Board 90th Annual Meeting

DVD

Figures; Photos; References (16) ; Tables (8)

Bending stress; Coarse aggregates; Compressive strength; Cost effectiveness; Cracking of concrete pavements; Durability; Fiber reinforced concrete; Mix design; Reinforced concrete pavements; Service life; Tensile strength

Hybrids; Microfibers

Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I32: Concrete

Transportation Research Board Annual Meeting 2011 Paper #11-3014

TRIS, TRB

Feb 17 2011 6:22PM