01571612

Component

https://doi.org/10.3141/2473-05

Weathered basalts are polygonal fragments of various dimensions generally spread in a wide grading envelope. They are found in high-volume portions of basaltic spills where the rock is extremely fractured and where degradation processes prevail over decomposition. This material was used as base and subbase layers of experimental pavement sections tested with a heavy traffic simulator. The same material was used as the base and subbase of a pavement on a low-volume road in Rio Grande do Sul state, Brazil, that was monitored for 10 years. The main conclusion from the study is that the low-volume road pavement presented different forms of surface degradation in comparison with the experimental road tested with the traffic simulator. The design model obtained in the traffic simulator study was used to identify the point at which the pavement started to deteriorate and thereby identify when a maintenance program was needed rather than to predict when the pavement had already fully deteriorated.

01569286

English

pp 42-48

2015

Transportation Research Record: Journal of the Transportation Research Board

9780309295727

Print

Figures; Photos; References; Tables

Alternatives analysis; Basalt; Deterioration; Low volume roads; Pavement performance; Testing; Traffic simulation

Rio Grande do Sul (Brazil)

Highways; Pavements; Planning and Forecasting; I22: Design of Pavements, Railways and Guideways; I72: Traffic and Transport Planning

TRIS, TRB, ATRI

Jul 8 2015 12:03PM

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