Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book. Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages.
34 APPENDIX C- INSTRUCTIONS FOR TESTING SOIL CLASSIFICATION AND COMPACTION OF PROFICIENCY SAMPLES
35 Instructions for Testing and Reporting Soil Classification and Compaction Proficiency Samples No. 147 and No. 148 All tests should be conducted on each of the two samples according to the AASHTO or ASTM methods indicated. Report the results of a single determination only, not the average of two or more. Indicate any tests you do not choose to do by inserting "N" in the appropriate spaces on the data sheet. Please place your telephone number (and email address) on the data sheet in the space provided. Preparation of Samples: Prepare the soil in accordance with Method T87-86 or D421-85 or Method T146-96 or D2217-85. Particle Size Analysis of Soils T88-00 or D422-63: Determine the hygroscopic moisture and perform the sieve and hydrometer analysis. Report the sieve and hydrometer analysis as a percent passing. Use the same nest of sieves for both samples, and report the results to the nearest 0.1 percent. Liquid Limit of Soils T89-02 or D4318-00: Determine the liquid limit by the Referee Test, Method A. Report the results to the nearest 0.1 percent. Plastic Limit of Soils T90-00 or D4318-00: Determine the plastic limit and report the results to the nearest 0.1 percent. Do not report the plasticity index. If the material is found to be non- plastic report "NP" in the space provided on the data sheet. (Please indicate if the plastic limit- rolling device is used.) Shrinkage Factors of Soils by Mercury Method T92-97 or D427-98: Determine the shrinkage limit and report the results to the nearest 0.1 percent. Moisture-Density Relations of Soils T99-01, D698-00a or T180-01 (T180 is optional. Perform T180, rather than T99 or D698, only if your laboratory wishes to participate voluntarily in an inter-laboratory study to estimate the precision of T180): Determine the moisture-density relations by Method A, using a 101.6-mm (4-in.) diameter mold. Report the optimum moisture content to the nearest 0.1 percent. Report the maximum dry density to the nearest 0.1 lb/ft3. (Note: If performing D698, the material must be reused. There is not sufficient soil to prepare a separate sample at each trial moisture content. After each compaction, take a moisture content specimen and thoroughly break up the remainder of the compacted soil into particles small enough to pass a 4.75-mm (No. 4) sieve and reuse. Mix each water increment thoroughly with the soil sample prior to compaction.) Specific Gravity of Soils T100-01 or D854-02: Determine the specific gravity of material passing the 2.00-mm (No. 10) sieve [or passing 0.425-mm (No. 40), if T146/D2217 was used]. Oven dry the soil in accordance with Section 8.3 (T100) or Section 9.3 (D854) and determine the specific gravity at a temperature TX=20°C. Report the results to the nearest 0.001 specific gravity unit.
36 Instructions for Testing and Reporting Soil Classification and Compaction Proficiency Samples No. 157 and No. 158 All tests should be conducted on each of the two samples according to the AASHTO or ASTM methods indicated. Report the results of a single determination only, not the average of two or more. For any tests you do not choose to perform, leave the appropriate spaces on the data sheet blank. Preparation of Samples: Prepare the soil in accordance with Method T87-86 or D421-85 or Method T146-96. Particle Size Analysis of Soils T88-00 or D422-63: Determine the hygroscopic moisture and perform the sieve and hydrometer analysis. Report the sieve and hydrometer analysis as a percent passing. Use the same nest of sieves for both samples, and report the results to the nearest 0.1 percent. Liquid Limit of Soils T89-02 or D4318-05: Determine the liquid limit by the Referee Test, Method A. Report the results to the nearest 0.1 percent. Plastic Limit of Soils T90-00 or D4318-05: Determine the plastic limit and report the results to the nearest 0.1 percent. Do not report the plasticity index. If the material is determined to be non-plastic, leave the space blank on the data sheet. Shrinkage Factors of Soils by Mercury Method T92-97 or D427-04: Determine the shrinkage limit and report the results to the nearest 0.1 percent. Specific Gravity of Soils T100-06 or D854-06: Determine the specific gravity of material passing the 2.00-mm (No. 10) sieve [or passing the 0.425-mm (No. 40) sieve, if T146 was used]. Oven dry the soil in accordance with Section 8.3 (T100) or Section 9.3 (D854) and determine the specific gravity based on water at 20°C. Report the results to the nearest 0.001 specific gravity unit. Moisture-Density of Soils (Standard Effort) Using a 2.5-kg (5.5-lb) Rammer T99-01, D698-07: Determine the moisture-density relations using a 101.6-mm (4-in.) diameter mold (AASHTO Method A or ASTM Method A). Report the optimum moisture content to the nearest 0.1 percent. Report the maximum dry density to the nearest 0.1 lb/ft3. (Note: If performing D698, the material must be reused. There is not sufficient soil to prepare a separate sample at each trial moisture content. After each compaction, take a moisture content specimen and thoroughly break up the remainder of the compacted soil into particles small enough to pass a 4.75-mm (No. 4) sieve and reuse. Mix each water increment thoroughly with the soil sample prior to compaction.) Moisture-Density of Soils (Modified Effort) Using a 5.54-kg (10-lb) Rammer T180-01, D1557-07: Determine the moisture-density relations using a 101.6-mm (4-in.) diameter mold (AASHTO Method A or ASTM Method A). Report the optimum moisture content to the nearest 0.1 percent. Report the maximum dry density to the nearest 0.1 lb/ft3. (Note: If performing D1557, the material must be reused. There is not sufficient soil to prepare a separate sample at each trial moisture content. After each compaction, take a moisture content specimen and thoroughly break up the remainder of the compacted soil into particles small enough to pass a 4.75-mm (No. 4) sieve and reuse. Mix each water increment thoroughly with the soil sample prior to compaction.) Testing for Compaction (Below): Testing for Moisture-Density Relations of Soils may be performed using either the Standard Effort (T99/D698) or the Modified Effort (T180/D1557). It is not necessary to perform both types of testing. A 4-in. mold (Method A) must be used.
