KS F 2730-2008 Testing method for rebound number to conclude compressive strength of concrete《混凝土抗压强度测定的回弹数测试方法》.pdf

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1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS F 2730 KS F 2730:2008 (2013 ) 2008 12 30 http:/www.kats.go.krKS F 2730:2008 : ( ) ( ) ( ) ANC ( ) ( ) : (http:/www.standard.go.kr) : : 2003 11 19 : 2008 12 30 : 2013 10 08 : 2013 0524 : ( 02-509-7290) (http:/www.kats.go.kr). 10 5 , . KS F 2730:2008 (2013

2、) Testing method for rebound number to conclude compressive strength of concrete 1 1.1 . 1.2 . . 1.3 . , . 2 . . ( ) . KS F 2403, KS F 2405, KS F 2422, 3 3.1 1) , . . ( ) 1) (N , NR , P ). , , . KS F 2730:2008 2 . 3.2 . 3.3 (test anvil) , 150 mm . , . . 4 4.1 100 mm , . . . 4.2 150 mm . 3.2 . 4.3 ,

3、. . , . 100 mm , 30 mm . 20 . , . 1 300 mm300 mm . 30 mm 50 mm . 2 , . . 5 20 20 % . 4 , 4. 20 . 6 6.1 KS F 2730:2008 3 . 6.1.1 0 . . 6.1.2 . 6.1.3 , . , . 6.1.4 . 8.2 , . 6.1.5 , . . 6.1.6 , 1 3 . 6.1.7 . 6.2 . 3.3 . 1 , . 7 7.1 . , . KS F 2730:2008 4 7.2 . / . 7.2.1 4 (batch) , 150 mm150 mm300 mm

4、KS F 2403 . 3 . 7.2.2 , 20 . 2.2 N m 7 N/mm2 10 N/mm2 2) . 7.2.3 KS F 2405 . 3 5 % . . 7.2.4 . . 7.3 . 7.3.1 7.3.2 . 7.3.2 4 3 , . KS F 2422 . 7.3.3 . . 8 8.1 . 8.2 3) . 2) , . 3) 28 n , . KS F 2730:2008 5 9 . a) , b) c) d) e) ( , , , ) f) g) ( , , ) h) i) j) k) 1 (N ) KS F 2730:2008 6 KS F 2730:200

5、8 , . 1 1.1 . (schmidt hammer) , . 1948 E. Schmidt , . , , . , . 1.2 2003 : 2008 : KS A 0001: 2008( ) 2 1. 1.1 , . . 1.2 , , ( ) , . 1.3 , , . KS F 2730:2008 7 2. . 3. 3.1 (plunger) . 1 mm , 15 mm (灣 入 ) . , , . 1 kg m N/mm2 kg N ( ) 0.225 14.7 58.8 1.0 R NR ( ) 0.225 14.7 58.8 1.4 R NP ( ) 0.225 14

6、.7 58.8 1.6 R ND ( ) 0.225 14.7 58.8 1.6 R MTC ( ) 0.225 14.7 98.1 1.6 P ( ) 0.090 4.9 14.7 2.7 L(R) ( ) 0.075 9.8 58.8 1.2 M ( ) 3.0 58.8 98.1 12.0 , 1 N/mm2 10.19 kg/cm2 3.2 , . , . 3.3 . (test anvil) , KS F 2730:2008 8 . 500 52C . R 80 (802) , (801) . , . 72 . R Ro80/Ra Ra : (a 90) Ro : R . 4. 4.1 , . , , . , 2.1 , 0.4 . 4.2 , , . 2 5 % 20 % , . 24 , 5 mm . 4.3 , . 28.9 mm . 30 mm . ASTM C805 10 , BS 1881: Part 202 12 , , 20 , 8 10 20 . 5. 5.1 10 % . , . , . ASTM C805 KS F 2730:2008 9 6 , 20 % . 4 . 6. 6.1 , , . , . 20 ,

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