This standard is issued under the fixed designation C ; the number immediately 1 This test method is under the jurisdiction of ASTM Committee C09 on. C Standard Test Method for Relative Density (Specific Gravity) and Absorption of Coarse Standard + Redline PDF Bundle, 10, $, ADD TO CART. Download ASTM C DOWNLOAD PDF - KB. Share Embed Donate Description. Designation: C – 88 (Reapproved ).
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ASTM C - Download as PDF File .pdf), Text File .txt) or read online. Cpdf - Download as PDF File .pdf), Text File .txt) or read online. Depending on the procedure used, the density ASTM Standards: 2 (kg/m3(lb/ ft3)) is. Aggregates2. C Test Method for Density, Relative Density (Specific 1 This test method is under the jurisdiction of ASTM Committee C09 on. Concrete and.
Effective specific gravity lies between apparent and bulk specific gravity. It is formally defined as the ratio of the mass in air of a unit volume of a permeable material excluding voids permeable to asphalt at a stated temperature to the mass in air of equal density of an equal volume of gas-free distilled water at a stated temperature.
Effective specific gravity is determined by a different procedure and is not covered in this section. Figure 4: Abbreviations. The difference between Gsa and Gsb is the volume of aggregate used in the calculations.
The difference between Gsb and bulk SSD specific gravity is the weight of aggregate used in the calculations.
Both use the same aggregate volume. The difference between Gsa, Gse and Gsb is the volume of aggregate used in the calculations. It is not a complete procedure and should not be used to perform the test.
These values are then used to calculate bulk specific gravity, bulk SSD specific gravity, apparent specific gravity and absorption. Figure 5 shows major coarse aggregate specific gravity equipment. Approximate Test Time 3 days from sample preparation to final dry weight determination Basic Procedure 1. Obtain a sample of coarse aggregate material retained on the No. This sample size is based on nominal maximum aggregate size NMAS.
Sample sizes range from g for a 0. Figure 6: No. Prepare the material. Wash the aggregate retained on the No. This discards small aggregate particles clinging to the retained large particles. Dry the material until it maintains a constant mass. This indicates that all the water has left the sample.
Cool the aggregate to a comfortable handling temperature. Immerse the aggregate in water at room temperature for a period of 15 to 19 hours Figure 7. Figure 7: Soaking the sample.
This is because in the normal procedure the water may not be able to penetrate the pores to the center of the aggregate particle during the soaking time. If the aggregate is not oven-dry to start, the existing water in the aggregate pore structrure may be able to penetrate further into the pores AASHTO, c . Dry the sample to a saturated suface dry SSD condition. Rolling up the aggregate into the towel and then shaking and rolling the aggregate from side to side is usually effective in reducing the sample to a SSD condition Video 1.
It may be necessary to wipe the larger particles separately. Once there are no visible signs of water film on the aggregate particle surfaces, determine the sample mass. Paper towels may absorb water in the aggregate pores. Place the entire sample in a basket Figure 8 and weigh it underwater Figure 9. The basket should be pre-conditioned to the water bath temperature.
Shake the container to release any entrapped air before weighing. The container overflow needs to work properly to compensate for the water displaced by the sample. Figure 8: The basket used for underwater weighing. Figure 9: Weighing the sample underwater. Remove the aggregate from the water and dry it until it maintains a constant mass. Cool the aggregate in air at room temperature for 1 to 3 hours then determine the mass. Results Coarse aggregate bulk specific gravity. Coarse aggregate bulk SSD specific gravity.
Coarse aggregate apparent specific gravity. Coarse aggregate absorption. Specifications There are no minimum or maximum specific gravity or absorption values in Superpave mix design. Rather, specific gravity is an aggregate quality needed to make required volume calculations. Some state agencies specify minimum aggregate specific gravities or maximum percent water absorption to help control aggregate quality. Typical Values Specific gravities can vary widely depending upon aggregate type.
Some lightweight shales not used in HMA production can have specific gravities near 1. Typically, aggregate used in HMA production will have a bulk specific gravity between about 2. Bulk SSD specific gravities can be on the order of 0.
For a particular aggregate type or source, fine aggregate specific gravities can be slightly higher than coarse aggregate specific gravities because as the aggregate particles get smaller, the fraction of pores exposed to the aggregate surface and thus excluded from the specific gravity calculation because they are water-permeable increases.
Aggregate absorption can also vary widely depending upon aggregate type. Some lightweight shales not used in HMA production can have absorptions approaching 30 percent, while other aggregate types can have near zero absorption.
Standard Test Method for Flexural Strength of. Carbon and Sulfur Analysis. Contrary to what is often conveyed in the industry, however, there is no direct relationship between the compressive strength of concrete and its BWA refer to Fig.
Resistivity Measurements in Concrete.
OHD L It has been a pleasure serving You. Specimens will be available for examination for 60 days. Associate Director, Research. The sieve analysis.
ASTM C Louisiana Transportation Research Center. ASTM E Test procedures used in evaluation of penetrating sealers. The balance shall conform to the requirements of Part V, 5. Naik Report No. It is the responsibility of astm c user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
It can be astm c to determine conformance with specifications for concrete and to show differences from place to place within a mass of concrete.
Designate the final surface-dry mass after immersion B. Astm C is a free Astm C browser that allows you to find the top photos from Astm C for any given day and then open and interact with those photos. Indeed, some parameters affect the BWA but do not necessarily affect the mechanical properties.
The most recent revisions of ASTM documents can be purchased by calling or visiting www. Absorbed chloride:. Your comments will receive careful consideration at a meeting of the astm c technical committee, which astm c may attend. Issue 47 — March If the third value checks the second, consider the specimen dry.
Concrete Specimens treated. Chloride permeability,. If we can be of further assistance please contact the undersigned.