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2、hod of test for resistance to abrasion of coarse aggregate by use of the Los Angeles machine 1 1) . 52.5 mm 4.2(c) . 2 . ( .) . KS A 5101 1, 1： KS B 2001, 3 . 3.1 1 (7105) mm, (5105) mm ( .) . . . (892) mm (892) mm . 1 270 mm . 1 450 mm . 1) . KS F 2508： 2007 2 ： mm 1 3.2 2 1 . 46.8 mm 1 390445 g2)
3、. 1 g A 12 5 00025 B 11 4 58025 C 8 3 33025 D 6 2 50025 E 12 5 00025 F 12 5 00025 G 12 5 00025 H 10 4 16025 3.3 10 kg , 1 g . 2) KS B 2001 1 . 892 ( 13) ( 13 ) 1906 8925505 ( 13 ) 5105 153 0.7 kW 16131871KS F 2508： 2007 3 3.4 1.7 mm, 2.5 mm, 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 40 mm, 50 mm, 65 mm 75 m
4、m3) . 4 4.1 . 4.2 . a) 2.5 mm, 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 40 mm, 50 mm, 65 mm 75 mm . b) 2 , (1055) . c) 1 g . 2 mm g g A 4025 2520 2015 1510 1 25025 1 25025 1 25010 1 25010 5 00010 B 2520 2015 2 50010 2 50010 5 00010 C 1510 105 2 50010 2 50010 5 00010 D 52.5 5 00010 5 00010 E 8065 6550 5040
5、2 50050 2 50050 5 00050 10 000100 F 5040 4025 5 00050 5 00025 10 00075 G 4025 2520 5 00025 5 00025 10 00050 H 2010 5 00010 5 00010 3) KS A 5101 1 1.7 mm, 2.36 mm, 4.75 mm, 9.5 mm, 16 mm, 19 mm, 26.5 mm, 37.5 mm, 53 mm, 63 mm 75 mm . KS F 2508： 2007 4 5 . a) (m1) 2 . b) 1 , 3033 A, B, C, D H 500 , E,
6、 F G 1 000 . c) 1.7 mm . , . d) ,4)(1055) (m2) . 6 . 100121=mmmR R ： (%) m1 ： (g) m2 ： 1.7 mm (g) 7 . a) b) c) , d) e) f) g) (%) 85 % . 4) . KS F 2508： 2007 5 KS F 2508： 2007 . 1 , , 2002 . KS A 0001( ) , . 2002 . 2 2.1 1964 12 30 . ASTM Designation： C 131 51, Standard Method of Test for ABRASION OF
7、 COARSE AGGREGATE BY USE OF THE LOS ANGELES MACHINE KS F 2508 ASTM C 131 51 . KS F 2508 B C ASTM . B ASTM 20 10 mm KS 2515 mm, C ASTM 105 mm KS 155 mm ( 1 ). KS . ASTM C 131 51 “ E, F G A, B, C D . .” . KS F 2508 . ASTM 1964 Small Size Coarse Aggregate Large Size Coarse Aggregate . “ ” . ASTM C 131
8、89, Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in The Los Angeles Machine(40 mm ) ASTM C 131 89, Standard Test Method for Resistance to Degradation of Large-Size Coarse Aggregate by Abrasion and Impact in The Los Angeles Machine(25 mm ) K
9、S F 2508： 2007 6 1 2.2 a) . b) 40 . . , . . 1) (5 mm ) . 2) . c) 1.7 mm . . 3 3.1 2010 mm . 2010 mm B(2515 mm) C(15 5 mm) . B C . . 10 ( 1 ). B 20 mm , C 10 mm 2 . (mm)(kg) HKS F 2508： 2007 7 . 10 , 1 , 1 2 , B C . 1 . 1 ： % 2010 mm mm % B 2015 1510 100 0 75 25 50 50 25 75 0 100 C 23.3 22.3 21.3 21.
10、6 21.3 21.3 20.0 11.1 12.2 11.9 12.6 13.0 15.2 13.6 B C C B . B C 4 % 2 % . B 3.3 % , C 2.5 % . B C . 3.2 1 270 mm ( 1) 6 1 . . mm . . 1 270 mm 1 450 mm . . 1 450 mm 2 . 3.3 “ ” 1 , . 1 “ ” 1 “ ” . . KS F 2508： 2007 8 ASTM “ ” 1 . . 4 4.1 ( 2.) . 4.2 ( 3.) a) ( 3.1) 1 270 mm . . , . b) ( 3.2) 1 H .
11、c) ( 3.3) “ ” . d) ( 3.4) KS A 5101 1 . 4.3 ( 4.) a) 4.1 4.2 . b) ( 4.2) . c) 4.2(c) 2 . 4.2 c) . d) H 4.2(c) H . B C 2 . e) 4.2(b) 2 , . 4.4 ( 5.) a) 5. a) . b) 5.(c) 1.7 mm 1.7 mm . 4.5 ( 7.) 7. a), b), c) g) . 153787 1 145 3(16) (02)26240114 (02)26240148 http:/ KS F 2508： 2007KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Method of test for resistance to abrasion of coarse aggregate by use of the Los Angeles machine ICS 91.100.30 Korean Agency for Technology and Standards http:/www.kats.go.kr
