robert lutz manager - astm international · data analysis. much data already exists range of...
TRANSCRIPT
�Why use proficiency testing data?
�What data is available?
�How are the samples prepared?
�Data Collection
�Data Analysis
�Much data already exists
�Range of materials
�Mining the data is easy
�The process is relatively
inexpensive
�ASTM D4 supports it
� E691 – Conducting an ILS to Determine the
Precision of a Test Method
� E177 – Use of the Terms Precision and Bias in
ASTM Test Methods (explanation and examples)
� E178 – Dealing With Outlying Observations
� E2586 – Basic Statistics (relatively new)
� E2489 – Statistical Analysis of One-Sample and
Two-Sample Interlaboratory Proficiency Testing
Programs
� “Proficiency testing programs often have a greater number of participants than might be available for conducting an interlaboratory study to determine the precision of a test method (such as described in Practice E 691). Precision estimates obtained for the larger number of participants in a proficiency testing program, along with the corresponding wider variation of test conditions, can provide useful information to standards developers regarding the precision of test results that can be expected for a test method when in actual use in the general testing community.”
� Concrete
� Portland Cement
� Blended Cement
� Masonry Cement
� Masonry Mortar
� Concrete Masonry Units
� Pozzolan
� Rebar
� D 2726 – Bulk Specific Gravity of Compacted Bituminous Mixtures
� D 2041 – Maximum Specific Gravity of Bituminous Mixtures
� D 6752 – Bulk Specific Gravity of Specimens by Means of Automatic Sealing Method
� D 6925 – Gyratory Compactor
� D 6927 – Marshall
� D 1560 – Hveem
� D 6307 – Asphalt Content by Ignition
� D 2172 – Asphalt Content by Extraction
� D 5444 – Mechanical Analysis of Extracted Aggregate
� Tests on Recovered Asphalt
� D 92 – Flash Point
� D 5 – Penetration
� D 2170 – Kinematic Viscosity
� D 2171 – Viscosity by Vacuum Capillary Viscometer
� D 70 – Specific Gravity
� D 2872 – RTFO
� D 6521 – PAV
� D 6084 – Elastic Recovery Test
� D 6648 – BBR
� D 6723 – Direct Tension
� D 7175 – DSR
� D 4402 – Rotational Viscosity
�#200 Wash
�Sieve Analysis
�Specific Gravity
�Sand Equivalent
�Sulfate Soundness
�Uncompacted Void Content
�Detailed
� Very clear
�Follow the current
method
�Same technician
should conduct an
individual test on both
samples
�Test results – data entered online by
laboratory
�Test method used
�Lab name, location, etc. (but never shared)