Downloaded from https://www.everyspec.com MUPSTO-620A 13 Jomm~ 194$ -. Method 103 PROPERTIES OF BITUitllNOUS MIXTURES [it WHICH MONE THAN 10 PERCENT OF AGGREGATE EXCEEDS 1-IN. M.4X[MUM SIZE -. 1. SCOPE .1.2 Paaa mixed batch through a stundard 1-in. nieve (while dill hot). Discard the plus l-in. portion, and teat the minus l-in. pm%on as described in method 100 or 101 whichever is applicable. 1.1 This test method is intended for use on bituminous mixtures iu which more than 10 percent of the aggregate exceeds l-in. maximum size. 5. CALCULATIONS 2. Apparatus. cified in method Apparatus shall be as spe- 100.
5.1 Use the stabili~ and flow values ob- tained on the processed sampl~ without further correction. Correct the values for unit weight and percent voids. Specimens shall be pre- pared as specified in method 100 except as otherwise specified herein, 3. Specimens. 4. PROCEDURE 5.2 Calculate the adjusted specific gravity using the bulk specific gravity’ of the @us 4.1 Mix bitumen with entire aggregate gradation (including plus l-in. portion ) at . bitumen content selected for testing. l-in. aggregate and the specific gravity of compacted cores of the minus 1-in, portion m follows : -.
Adjusted specific gravity 100 =- A - 0,995 ~+D where A=dry, plus 1-in, (previously determined) material expressed as percent of total batch weight. Total batch weight includes asphalt plus aggre- gate. See column A, fig. 103-1. B=portion of total batch remaining after removal of dry, plus l-in, material (100 percent A percent). See column B, fig. 103-1. C=bulk specific gravity of plus l-in+ aggregate, See column C, fig. 10%1, D=actual specific gravity of compacted specimens of material with plus l-in. portion removed. See column D, fig. 103-1.