01550063

Component

Aggregate resistance to polishing is measured in the laboratory by Polished Stone Value (PSV) and is affected by type of aggregate directly. Most aggregates used in pavements are carbonate rocks that do not have sufficient polishing resistance. Aggregate blending is a method to solve this problem. In this method, a High Polish resistant Aggregate (HPA) is added to a Low Polish resistant Aggregate (LPA) to provide the required skid resistance. In this research, efforts have been made to study different arrangements of a HPA (basalt with PSV=50) and a LPA (limestone with PSV=30) with the objective of achieving the highest skid resistance on laboratory scale. For this purpose, blended specimens were prepared in 3 different weight percentages of limestone and basalt. The specimens were made in six different aggregate arrangements for each blend and were tested according to BS EN 1097-8. Results showed that aggregate arrangements affect the friction resistance of the specimens up to 20 percent.

This paper was sponsored by TRB committee AFD90 Surface Properties - Vehicle Interaction.

01550057

15-0458

English

11p

2015

Transportation Research Board 94th Annual Meeting

Digital/other

Figures; References; Tables

Aggregates; Basalt coarse aggregates; Blending; Limestone aggregates; Polished aggregates; Polished stone value test; Skid resistance

Polish resistance

Highways; Materials; Pavements; I36: Aggregates

Transportation Research Board Annual Meeting 2015 Paper #15-0458

TRIS, TRB, ATRI

Dec 30 2014 12:16PM