01561428

Component

http://www.trb.org/Main/Blurbs/172350.aspx

Tack coat, a light application of asphalt, can provide a bond between a pavement surface and newly placed pavement. Selecting optimal tack coat material and determining an appropriate application rate are both critical for developing the bond strength between pavement layers. This article reports on National Cooperative Highway Research Program Project 9-40 (Optimization of Tack Coat for Hot-Mix Asphalt), which aimed to develop procedures for selecting tack coats and evaluating their quality in field applications. The project investigated the effects of emulsified tack coat types, surface types, and application rates. The results and findings of the project are offered in this article. The role of Louisiana in developing the evaluation tools and providing pilot testing of the guidance is highlighted.

English

pp 43-45

2015-1

TR News

Print

Figures; Photos; References; Tables

Asphalt pavements; Hot mix asphalt; Materials selection; Optimization; Tack coats

Louisiana

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

TRIS, TRB, ATRI

Apr 18 2015 8:57AM

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