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2、tening point of bituminous materials (Ring and ball method) 1 . 2 . . KS B 2001, KS B 5314, KS L 2303, 3 3.1 ( ) , (25.4 mm) . 4 , , . 5 1 a)g) . a) 2 . b) KS B 2001 3/8 ( 9.525 mm) (3.50.05) g . c) 3 . d) 4 , KS M 2250: 2007 2 . 75 mm , 50 mm . 25.4 mm , 12.719.1 mm . 10 mm , . e) 1 (1002) mm, 1401
3、50 mm KS L 2303 1 . f) KS B 5314 33(SP) 34(SP) . g) 5 . KS M 2250: 2007 3 : mm 1 () b) a) 50757550KS M 2250: 2007 4 : mm 6 a) 90 . b) 2 , . c) 2 30 . 6. b) 10 , . 2 4 3 8KS M 2250: 2007 5 d) 4 . 7 a) 2 , , , . b) 80 5 1) , 80 32 , 100110 mm . c) 80 5 , 80 32 15 . d) . e) 3 (50.5) . f) . . 2 1 . g) 2
4、 0.5 . 8 . a) 2 1 . b) 2 1 2 . 1 2 80 1.0 80 4.0 80 . 2.0 80 . 8.0 1) . () 135513 7017 (02)60094114 (02)600948878 http:/ KS M 2250: 2007KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Testing method for softening point of bituminous materials (Ring and ball method) ICS 75.140 Korean Agency for Technology and Standards http:/www.kats.go.kr