Details:

Alternative Title:
Hot mix pavement temperatures : Louisiana highway research.
Creators:
Arena, Philip J.
Corporate Creators:
Louisiana. Department of Highways
Corporate Contributors:
United States. Bureau of Public Roads
Subject/TRT Terms:
[+]
Asphalt Concrete Binder Course Hot Mix Asphalt Service Temperature Temperature Tests Wearing Course (Pavements)
Publication/ Report Number:
Research Report No. 14
Resource Type:
Tech Report
Geographical Coverage:
Louisiana
Corporate Publisher:
Louisiana. Department of Highways
Abstract:
The Service Temperature Study was undertaken to supplement a pilot study started in 1959 which indicated that service temperatures obtained on Louisiana highways are slightly higher than those used for testing purposes.

Temperature recorders were installed in the northern, central and southern parts of Louisiana for hot mix wearing and binder course lifts. Results showed that the wearing course in southern Louisiana (Baton Rouge area) exceeded the hot mix testing temperature of 140°F during the months of May, June, July, and August for 1961 and 1962. It was also observed that the wearing course was at or above 140°F 17 percent of the time in July, 1962 with an average maximum peak, during the same month, of 150°F for 1961 and 1962. This percentage was based on the number of hours at which the wearing course was at or above 140°F divided by the total number of hours during the period of recording, which was generally seven days. The percentages of each period were then in turn averaged for each month.

The binder course lift in this same area showed a maximum monthly peak of 130°F also in July, 1962.

Temperature results for the central part of Louisiana, namely, the Alexandria area showed that the average maximum peak temperature was 144°F and occurred in the month of June, 1963. It should also be mentioned that during the months of July and August the hot mix testing temperature of 140°F was also exceeded with average maximum peak temperature of 141°F per each of these months. However, although the months of June, July, and August show average maximum peak temperature exceeding 140°F, the percentage of time at or above 140°F was only 6 percent for the month of June and 1 percent for July and August. The binder course lift for this area showed an average maximum peak temperature of 123°F also in June, 1963 which was below the hot mix testing temperature.

Temperature results for the Shreveport area (north Louisiana) indicated that the wearing course had an average maximum peak temperature of 129°F in June, 1963 which is also below the hot mix testing temperature. The binder course showed an average maximum peak of 123°F also occurring in June, 1963.

It should be noted that the binder and wearing course lifts for all these locations maintained their maximum temperature generally from 4 to 5 hours per day. Overall results showed that the average minimum and maximum temperatures ranged from 40 to 150°F respectively for the wearing course lift and from 14 to 130°F for the binder course.


Format:
PDF
Funding:
Research Project No. 61-3B, HPR 1(2)
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:23a3c8477a726bcffb7da47573ab99613633d72ca0d5abd3b53aa515e3dac340
Download URL:
https://rosap.ntl.bts.gov/view/dot/22082/dot_22082_DS1.pdf
File Type:

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