Engineering Commons^™

Hot-Mix Coal-Tar Concrete Pavement, Donald C. Newberry Jr., Jerry G. Rose

Kentucky Transportation Center Research Report

The principle objectives of this research were:

1. To compare the economics and performance of coal tar to asphalt cement;
2. To develop reliable coal-tar construction specifications;
3. To familiarize personnel with coal-tar construction; and
4. To implement Section 201, Subsection d and e, of the Appalachian Regional Development Act of 1965.

To accomplish these objectives, a 6.6-mile experimental section utilizing coal-tar (RT-12) concrete base and surface and 5.1-mile and 5.7-mile control sections utilizing asphalt (PAC-5) concrete base and surface were placed on relocated KY 15 in Perry, Knott, and Letcher Counties during the 1969 and 1970 construction seasons. The pavement consisted of an …

Experimental Concrete Pavement Containing Fly-Ash Admixtures [1971], James R. Philpot

Kentucky Transportation Center Research Report

The report enclosed is somewhat routine inasmuch as it documents a repeat of a portion of an earlier experimental project. The previous project was on Poplar Level Road; our final report was dated July 1966 (KYHPR-64-1). Special Provision No. 70 was used also on the Jefferson Freeway project. However, there was no "control section" involved in the current project. The Jefferson Freeway project was authorized by the BPR under P.P.M. 60-2 only (now PPM 20-6.3).

The most significant findings from both projects concern the water requirements the concrete containing the fly-ash admixture. Whereas laboratory tests indicated reasonable expectations of a …