Details:

Creators:
Fager, Glenn A.
Corporate Creators:
Kansas. Dept. of Transportation. Bureau of Materials & Research
Subject/TRT Terms:
[+]
Asphalt Hardening Asphalt Pavements Cold Mix Paving Mixtures Hot Mix Asphalt Materials Pavement Cracking Pavement Mainteance Pavements Recycled Materials Recycling Rutting Seal Coats Test Sections
Publication/ Report Number:
FHWA-KS-03-2
Resource Type:
Tech Report
Geographical Coverage:
United States ; Kansas
United States ; Kansas Less -
TRIS Online Accession Number:
00970420
Edition:
Final Report
Corporate Publisher:
Kansas. Dept. of Transportation
Abstract:
In 1990, 13 full depth asphalt pavement test sections were built on a portion of I-70 in Thomas County, Kansas. Various combinations of hot mix and cold recycle mixes with different additives were used to build the test sections. Two of the test sections were constructed with a reduced pavement thickness in order to determine how long the thin pavement could withstand the heavy loading of interstate traffic. At least three test sections employed the use of cold recycle material using Class C fly ash, CMS-1 with hydrated lime, and CMS-1 only. The top layers were hot mix, both an AC-20 and polymerized or modified asphalt was used as the liquid binder. The test sections were monitored over a period of 11 years. The top layer had severe microcracking which was probably due to further hardening of the AC-20. Two seals were placed over the surface in order to prevent raveling. The cost of each test section was determined and the life on at least four of the test sections could be determined. On five of the test sections the pavement life could only be estimated. Based on the initial construction cost and life of each test section, an annual cost of each test section could be determined or estimated. Based on these annual costs, the field crack/rut survey and Falling Weight Deflectometer measurement, the thicker full depth hot mix test section was judged to perform the best. The thin full depth hot mix had the highest annual cost. The life spans of these thin sections were determined to be three to five years and were not economically feasible as a means of interstate reconstruction. The cold recycled sections with the different additives performed quite well, with the CMS-1 with and without lime having a lower annual cost than the fly ash section. (32 p.)
Format:
PDF
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:f16b266407f15e2a885831dce47dcd810978c379d2a8953ba66a15bae5d4dd4b
Download URL:
https://rosap.ntl.bts.gov/view/dot/16096/dot_16096_DS1.pdf
File Type:

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