Downloaded from https://www.everyspec.com ~20A la &nw8ry lW ..-_. Method 101 DENSXTY AND PER CENT VOIDS OF COMPACTED BITUMINOUS PAVING MIXTURES 1. SCOPE correction for error in bulk volume caused by the penetration of the water. Racord 1.1 This method of testing is used on either laboratory-compacted aampke or aam- these we@hts in the appropriate columns on a form such aa !lgure 100-8. The vol- ume of the sample determined as shown in figure 100-8 is then entered on a form similar to figure 101-2 for use in the * maining calculations. pies taken from actual pavements. 2. APPARATUS 2.1 Balance, 2-kg apacity, sensitive to 0.1 g.
4a Open-textulwd aamplea open-tax- tured samples shall be weighed in air and then coated with paraffin for volume deter- mination as illuatratad in figure 10L9. The volume thus determined is entered on a form similar to figure 101-2 for uae in the remaining calculations. 2.2 Wire basket for weighing samples suspended in water. 2.3 Tank or bucket of sufficient capacity to completely immerse the sample in water. 3. PREPARATION OF SPECIMENS 5. CALCULATIONS 3.1 All specimens shall he marked for identification. Each specimen shall be a!r- dried prior to testing. 5.1 Before the voids can be calculated, the specific gravity of both the aggregate and aaphdt and the percentage of each must be known.
Figure 101-2 8hows typical data and calculation needed in order to complete the calculations shown in figure 101-1. PrG mdures for the specific-gravity tests on the individual mmponenta are presumed to be available and are therefore not described herein. Formulas for the complete calcula- tions are indicatad at the top of the re 4. TESTING PROCEDURES 4.1 Nonporous samplea. Weigh these samples in air and in water and record the weights in the appropriate spaces on a form such as that shown in figure 101-1. 4.2 Slightly pomms samples.
samples having a fme-te.xtured but slightly porous surface (particularly the cut surface of some pavement cores and sawed aampha) shall be weighed in air, then in water, and then in air again (after blotting excess water with cloth or paper towel) make a spective columns in figure 101-1. 6. REPORT 6.1 A summary of computatio~ such as that shown in figure 101-1, shall be pre- pared for all sampk tdad. Method 101 21