Evaluation Study of Pit Run Gravel Asphalt Treated Base Mixtures with Various Percentages of Crushed Limestone, R-217, 1968

(1968) Evaluation Study of Pit Run Gravel Asphalt Treated Base Mixtures with Various Percentages of Crushed Limestone, R-217, 1968. Transportation, Department of

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Abstract

In November of 1966, an investigation of the rigid Class I asphalt treated base specification, requiring 70 per cent crushed limestone, was initiated. It was felt that it might be possible to modify the need for crushed particles, in the construction of basis on heavy duty roads, at a savings, by using more local materials, without sacrificing strength and/or durability. This is a short study on typical sources of pit run gravel, with various percentages of limestone. It is conducted with an eye open to the possibility that our specifications may be modified. The possibility that further investigation may be desirable is not ignored.

Item Type: Departmental Report
Keywords: Asphalt, Asphalt based materials, Asphalt mixtures, Cost effectiveness, Crushed limestone, Gravel pits, Road construction, Pit run gravel asphalt
Subjects: Transportation
Transportation > Materials
Transportation > Materials > Gravel and aggregates
Transportation > Roads and highways
Transportation > Research
Transportation > Research > Asphalt
Transportation > Economics, finance, and taxes
ID Code: 17188
Deposited By: Iowa DOT Library
Deposited On: 10 Jun 2014 15:37
Last Modified: 26 Jan 2015 12:39
URI: http://publications.iowa.gov/id/eprint/17188