01128875

Component

It is essential for transportation agencies to make an effort to provide safe and smooth pavement. Fine-grain exposed aggregate PCC (EAP) pavement has been successfully used in Europe and Japan as an alternative solution to reduce noise level of PCC pavement and to enhance long term skid resistance, simultaneously. As the advantages of the fine grain EAP pavement are well recognized and there are a number of research reports, more comprehensive and thorough research is sought for better design and field practice specifications. This study aims to investigate the fundamental properties of the EAP pavement, and expects to provide useful information for design or construction practice specifications. In order to accomplish this goal, this study conducted a series of experimental works. An appropriate type of coarse aggregate was verified, and the optimum exposure technique and mix proportions were explored in the consideration of retarders (type, concentration and quantity), aggregate (size and grading), curing method and mix proportions. It was found that 13mm size aggregate is appropriate for the fine-grain EAP. This study regarded the penetration resistance as an indication of exposure timing. The recommended timing is when the penetration resistance is over 100MPa yet no later than 30 hours after application of retarder. In addition to those conclusions, this study also provides valuable and detailed information for the future guidelines for design and field practices of the fine-grain EAP pavement.

01120148

09-0640

English

15p

2009

Transportation Research Board 88th Annual Meeting

DVD

Figures; Photos; References (10) ; Tables (4)

Concrete curing; Fine grained soils; Mix design; Portland cement concrete; Research; Skid resistance; Tire/pavement noise

Exposed aggregate concrete

Europe; Japan

Highways; Pavements; I22: Design of Pavements, Railways and Guideways

Transportation Research Board Annual Meeting 2009 Paper #09-0640

TRIS, TRB

Jan 30 2009 4:53PM