1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS F 2378 KS F 2378: 2013 2013 5 16 http:/www.kats.go.krKS F 2378:2013 : ( ) ( ) () () ( ) : (http:/www.standard.go.kr) : :2002 6 25 :2013 5 16 2013-0180 : : ( 02-509-7274) (http:/www.kats.go.kr). 10 5 , . KS F 2378:2013 i 1 1 2 1 3 .1 3.1 .1 3.2 .2 3.3 .2 3
2、.4 .3 4 .3 4.1 3 4.2 4 4.3 .4 4.4 4 5 4 6 5 7 6 7.1 5 , 20 .6 7.2 5 , 20 6 7.3 5 , 20 6 7.4 .6 KS F 2378:2013 .7 KS F 2378:2013 Standard test method for flexural beam fatigue of asphalt mixtures 1 . 2 . . ( ) . KS F 2366, KS F 2374, KS F 2446, ( ) 3 3.1 1 , , , . 1 LVDT KS F 2378:2013 2 3.2 5 25 , 1
3、.0 . 6 3 . 3.3 , , , , . 0.25 m , , . 3.3.1 (controlled-stress) (controlled-strain) , . 2 1/3 (third-point) . 3.3.2 (LVDT) . (LVDT) . 3.3 . LVDT Linear Variable Differential Transformer , (mutual inductance) (armature) . 3.3.3 3.3 . KS F 2378:2013 3 : mm 2 3.4 . . a 1 b c 3 4 4.1 KS F 2374 . 4.1.1 (
4、502) mm . 2.5 . R 16100 100 100 4040 300c a b PKS F 2378:2013 4 4.1.2 50 mm( )50 mm( )(40010) mm( ) . 4.2 , 4.1 , , . 4.3 , 0.01 g/cm3 . 4.3.1 KS F 2366 (Gmm) . . 4.3.2 KS F 2446 . 4.4 . 5 5.1 2 . 5.2 , . , 6 . 5.3 , 1 . 5.4 , (haversine) . 200 . . (51) (201) (201) . 1.0 Hz . KS F 2378:2013 5 6 6.1
5、(1) , (stiffness modulus) (2) , (3) . 2(max)3bhaPt=(1)IaLPaE48)43(22=(2)Ett =(3) a : (mm) P : (N) b : (mm) h : (mm) L : (mm) : (mm) I : bh3/12( 2 , mm4) E : (N/m2) t: (mm/mm) t: (N/m2) 3 3 , (Nf) 4 . 4 , 50 % . log t (or t ) log NfKS F 2378:2013 6 (4) , (5) . 111ntfKN=(4) fN: t: 11, nK: (regression)
6、 212ntfKN=(5) fN: t: 22, nK: (regression) 7 7.1 5 , 20 7.2 5 , 20 7.3 5 , 20 7.4 KS F 2378:2013 7 KS F 2378:2013 , . KS F 2378: 2007 . 1 1.1 , , . , . . . , . , . 1.2 2002 2007 (2013 ) . 1 (2007 ) , . 2 (2013 ) KS A 0001:2008 , 2 . 2 2.1 (flexural test) , . (haversine) 2 1/3 . (prism) (cylindrical)
7、. . , . KS F 2378:2013 8 , . . 2.2 Kneading Rolling Wheel , Rolling Wheel KS F 2374 . 2.3 , , , , , , . 5 25 , 1 . 3 6 . 15 25 , 20 . . , (201) . , , , , . 0.25 m , , . (controlled-stress) (controlled-strain) , . P . , . , , . LVDT, Linear Variable Differential Transformer (mutual inductance) , (arm
8、ature) . . (LVDT) . . . . 3 3 . 5 000 , 30 000 , 150 000 , 3 . . KS F 2378:2013 9 . , ( , Hinge) . . 2.4 KS F 2374 . . 20 mm 40 mm . 25 mm 50 mm . 1 . 1 mm mm mm Berkeley 38 38 38 Asphalt Institute 76 76 38 Shell 30 40 23 50 mm( )50 mm( )(40010) mm( ) . , 2.4 , , . , 0.01 g/cm2 . KS F 2366 (Gmm) . .
9、 KS F 2446 . . 2.5 2 . . , 6 KS F 2378:2013 10 . , . , (haversine) . 200 . . (51) (201) , (201) . 1.0 Hz . 2.6 200 , . (1) , (2) , (3) . 2(max)3bhaPt= (1) IaLPaE48)43(22= (2) Ett = (3) a : (mm) P : (N) b : (mm) h : (mm) L : (mm) : (mm) I : bh3/12( 2 , mm4) E : (N/m2) t: (mm/mm) t: (N/m2) 3 3 , (Nf)
10、4 . KS F 2378:2013 11 4 . L 300 mm, P 100 N, d0.28 mm, b h 75 mm75 mm , . )(N/m1.71)75.0(75.0)1.0)(100(33222=bhPa . )(N/m1.712= . 42222106.109)1.0(4)3.0(3)28000.0)(75.0(124312=aLhd , . (Pa)6.4896)28000.0)(37026.0(48)1.0(4)3.0(3)1.0(10048)43(2222=IdaLPaEs 2 (I) , 433cm7.26312)5.7(5.712=bhI / . , )(N/
11、m2.4876106.1091.7124=sElog t (or t ) log NfKS F 2378:2013 12 . 50 % . . 111ntfKN= fN: t: 11, nK: (regression) . 212ntfKN= fN: t: 22, nK: (regression) , . , . K1, K2, n1, n2 (regression) . . . , , . . . , . 2.7 5 , 20 , , , . 153787 1 145 3(16) (02)26240114 (02)26240148 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS F 2378:2013 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Standard test method for flexural beam fatigue of asphalt mixtures ICS 75.140