Trang 1 STANDARD SPECIFICATIONS FOR HIGH-CARBON TAR CEMENT1 A.S.T.M.. not less than 1.02 e Softening point Ring-and-Ball Method of residue from dis-tillation test .... ''''If desired, a flo
STANDARD SPECIFICATIONS FOR HIGH-CARBON TAR CEMENT1 A.S.T.M 'Designation: D 110-30 These specifications are issued under the fixed designation D 110; the final number indicates the year of original adoption as standard or, in the case of revision, the year of last revision ISSUED AS TENTATIVE, 1921; ADOPTED IN AMENDED FORM, 1930 1 These specifications cover material suitable for use in the con- Scope struction of tar macadam and tar concrete pavements 2 The tar cement shall conform to the following requirements: Properties (a) Water 0.00 per cent (b) Softening point2 (Ring-and-Ball Method) 30 to 40° C (86 to 104° F.) 3 (c) Distillation test: Total Distillate, by weight, 0 to 170° C 1.00 per cent (32 to 338° F.) not more than 10.00 " Total Distillate, by weight, 0 to 270° C " (32 to 518° F.) not more than 20.00 " 80.00 Total Distillate, by weight, 0 to 300° C (32 to 572° F.) not more than Residue, by weight not less than (d) Specific gravity at 38° C (100.4° F.) of total distillate to 300° C (572° F.) not less than 1.02 (e) Softening point (Ring-and-Ball Method) of residue from dis- tillation test not more than 65° C (149° F.) 1 Under the standardization procedure of the Society, these specifications are under the jurisdic~ tion of the A.S.T.M Committee D-4 on Road and Paving Materials 'If desired, a float test may be substituted for the softening point test, in which case the require· ments shall be as follows: Float Test at 50° C (122° F.), 100 to 220 sec aThe specification range for softening point, within the above limits, should be 5° C for any given locality, for example, 30 to 35° C for cold climates, equivalent to a float test at 50° C of 100 to 160 sec.; 35 to 40° C for warm climates, equivalent to a float test at 50° C of 160 to 220 sec (603) 604 SPECIFICATIONS FOR HIGH-CARBON TAR CEMENT Methods of (f) Total Bitumen (Soluble in Carbon Disulfide) 1 ••••.•••••••• Testing 78 to 95 per cent 3 The properties enumerated in these specifications shall be determined in accordance with the following methods of test of the American Society for Testing Materials: (a) Percentage of Water: Standard Method of Test for Water in Petroleum Products and Other Bituminous Materials (A.S.T.M Designatioh: D 95) ;2 (b) Softening Point: Standard Method of Test for Softening Point of Bitu1ninous Materials (Ring-and-Ball Method) (A.S.T.M Designation: D 36) ;3 (c) Distillation: Standard Method of Test for Distillation of Bituminous Materials Suitable for Road Treatment (A.S.T.M Desig- nation: D ,20) ;4 (d) Float Test: Standard Method of Float Test for Bituminous Materials (A.S.T.M Designation: D 139) ;5 (e) Total Bitumen: Standard Method of Test for the Determina- tion of Bitumen (A.S.T.M Designation: D 4).0 1 The specification range for total bitumen covers a wide variety of materials If products from vertical retort or low~carbon coke-oven tars are desired, a range of 88 to 95 per cent should be specified If high-carbon coke-oven or mixtures of coke-oven and g11s-house tars are desired, a range of 78 to 88 per cent should be specified 2 Seep 556, 'Sec p 650 'Seep 642 • Seep 660 'Seep 633