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Evaluation of Texas Dot Item 334, Hot-Mix, Cold-Laid Asphalt Concrete Paving Mixtures
Texas Department of Transportation (TxDOT) maintenance personnel have noted problems with a commonly used, stockpiled maintenance mix known as Item 334, Hot-Mix Cold-Laid Asphalt Concrete Paving Mixture (HMCL). It is generally used by maintenance personnel as a blade-on/level-up material and a pothole repair material. Performance problems include stripping in the stockpile, a tendency towards instability in hot weather, and a lack of winter workability. The objective of this research project was to identify a series of simple but meaningful laboratory tests and acceptance criteria for HMCL patching materials that will ensure reasonable stockpile life and field performance. A literature review was conducted to identify published information on patching materials with a particular emphasis on test procedures that have been developed for maintenance mixtures. A survey was performed of maintenance personnel in all of the TxDOT district offices to identify problems.
Evaluation of Texas Dot Item 334, Hot-Mix, Cold-Laid Asphalt Concrete Paving Mixtures
Texas Department of Transportation (TxDOT) maintenance personnel have noted problems with a commonly used, stockpiled maintenance mix known as Item 334, Hot-Mix Cold-Laid Asphalt Concrete Paving Mixture (HMCL). It is generally used by maintenance personnel as a blade-on/level-up material and a pothole repair material. Performance problems include stripping in the stockpile, a tendency towards instability in hot weather, and a lack of winter workability. The objective of this research project was to identify a series of simple but meaningful laboratory tests and acceptance criteria for HMCL patching materials that will ensure reasonable stockpile life and field performance. A literature review was conducted to identify published information on patching materials with a particular emphasis on test procedures that have been developed for maintenance mixtures. A survey was performed of maintenance personnel in all of the TxDOT district offices to identify problems.
Evaluation of Texas Dot Item 334, Hot-Mix, Cold-Laid Asphalt Concrete Paving Mixtures
C. K. Estakhri (author) / L. M. Jimenez (author) / J. W. Button (author)
2000
106 pages
Report
No indication
English
Cold-laid asphalt paving mixtures
Engineering Index Backfile | 1930
|Cold-laid asphalt paving mixtures
Engineering Index Backfile | 1929
|Cold-laid asphalt paving mixtures
Engineering Index Backfile | 1929
|Engineering Index Backfile | 1909
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