National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

Statistical Acceptance of Bituminous Paving Mixes.

PB83196428

Publication Date	1982
Personal Author	Kandhal, P. S.; Cominsky, R. J.
Page Count	244
Abstract	The objective of this study was to establish statistical comparative analyses of extraction data obtained from roadway cores and loose-mix samples taken directly behind the paver screed. The extraction results of loose samples obtained directly behind the paver screed, from the uncompacted mat, correlated very well with the job-mix formula. Moreover, current PennDOT specification limits for asphalt content and percentage aggregate passing the No. 200 sieve are too restrictive for individual measurements, and are more indicative of sample averages. The current specification limits were also found not to take into account present ASTM precision statements for extraction testing. Realistic specification limits were established based on the findings. A proposed specification was developed for field use, including an equitable price adjustment procedure.
Keywords	Roads Pavements Mixtures Bitumens Aggregates Specifications Comparison Statistical analysis Pennsylvania
Source Agency	Federal Highway Administration
NTIS Subject Category	50A - Highway Engineering
Corporate Authors	Pennsylvania Dept. of Transportation, Harrisburg.; Federal Highway Administration, Harrisburg, Harrisburg, PA. Pennsylvania
Document Type	Technical Report
Title Note	Final rept.
NTIS Issue Number	198316

Statistical Acceptance of Bituminous Paving Mixes.

Statistical Acceptance of Bituminous Paving Mixes.
PB83196428

Publication Date	1982
Personal Author	Kandhal, P. S.; Cominsky, R. J.
Page Count	244
Abstract	The objective of this study was to establish statistical comparative analyses of extraction data obtained from roadway cores and loose-mix samples taken directly behind the paver screed. The extraction results of loose samples obtained directly behind the paver screed, from the uncompacted mat, correlated very well with the job-mix formula. Moreover, current PennDOT specification limits for asphalt content and percentage aggregate passing the No. 200 sieve are too restrictive for individual measurements, and are more indicative of sample averages. The current specification limits were also found not to take into account present ASTM precision statements for extraction testing. Realistic specification limits were established based on the findings. A proposed specification was developed for field use, including an equitable price adjustment procedure.
Keywords	Roads Pavements Mixtures Bitumens Aggregates Specifications Comparison Statistical analysis Pennsylvania
Source Agency	Federal Highway Administration
NTIS Subject Category	50A - Highway Engineering
Corporate Authors	Pennsylvania Dept. of Transportation, Harrisburg.; Federal Highway Administration, Harrisburg, Harrisburg, PA. Pennsylvania
Document Type	Technical Report
Title Note	Final rept.
NTIS Issue Number	198316