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- W841690191 abstract "There are a large number of private sector and government laboratories in Ontario involved in the testing of aggregates, asphalt, concrete and soils. Test results produced by the laboratories govern acceptance/rejection of these materials. Inaccurate test results may cause unwarranted rejection or unjustifiable acceptance of a material. When either of these happen, the cost of construction and/or maintenance is adversely affected. Acceptance of substandard material may also affect the safety of the structure. The values obtained from the testing of aggregates, asphalt, concrete and soils are subject to many variables such as test procedures, equipment, environment and competence of operators. Although the methods of carrying out the tests and test equipment are specified in detail, differences in results between laboratories do exist and, in some cases, they are substantial. These differences can be detected by an appropriate interlaboratory correlation testing program. Laboratories aware of large departures from the mean test results can review their procedures and equipment, make appropriate changes and thus improve their own performance and the quality of the product sent to their clients. There are no correlation test programs in Ontario designed to service directly the laboratories and indirectly the construction industry. There is a need and there has been a demand for such a correlation program. The program described herein is designed for this purpose. The objectives of the correlation program are to: i) provide each participating laboratory with a means of evaluating its relative performance in the testing of aggregates, asphalt, concrete and soils with a view to improving testing accuracy and precision; and ii) increase confidence in the precision and accuracy of test results reported by the laboratories to their clients. To accomplish the above objectives it is proposed that at least one interlaboratory correlation test will be conducted for each test method each year. The results obtained in this program may also be used for establishing precision criteria for some of the test methods covered by the programs. (Author)" @default.
- W841690191 created "2016-06-24" @default.
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- W841690191 date "1981-05-01" @default.
- W841690191 modified "2023-09-26" @default.
- W841690191 title "INTERLABORATORY REFERENCE SAMPLE PROGRAMS FOR AGGREGATE, ASPHALT, CONCRETE AND SOIL TESTS" @default.
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