5

29 2012

. ..

GUNITE

SHOTCRETE

SPRAYED CONCRETE

2

3

(shotcrete gunite sprayed concrete) , .

4

5

.

6

(0-8mm) 350-450 kg/m3

( )

( , , )

(4-6%)

7

8

, .

0,5%, .

.

, , .

.

(fresh sprayed concrete) .

24 .

, 28 .

9

prEN 14487, Sprayed Concrete

prEN 14488, Testing Sprayed Concrete

12-03-02-00

10

.

N

: ) :.

90

)

11

12

13

,

,

.

14

.

15

ROBOT

16

ROBOT

17

X

ROBOT

18

19

(rebound) - .

20

()

21

;

-

!

-

+ SiO2 + SiO2

+ SiO2

. .

, J1, J2 J3 .

J1 .

J2 C.

J3 C.

. 23

24

(early development class) 24 .

SN EN 206-1

J1, J2, J3

J1: ,

J2: , , ,

J3: .

25

prEN 14488-2 ---

0.21.2 MPa

26

prEN 14488-2 --- B

316 MPa

27

28

29

- -

30

)

)

31

28, 56 90 (EN 12504-3:2005).

YIKA

m3 (kg)

514

/ = 0,44

3 ~ 12

1218

222

450

3.6

1.2 ~ 4.5

32

A

:

350 kg / m3

0.55

16 mm

,

0.7

33

C3A > 5% (tricalcium aluminate)

Blaine > 400 m2/kg ( )

() ( 42.5 52.5) EKTO () ( A L K A L I F R E E )

34

!

!

35

TOY ...

EI

1/2''

, '.

8mm

36

:

:

( )

ASTM C

1141

, 24

& 28

37

??: 24 , 28

.

MHXANHMA KAI XEI

.

38

39

NA

- ,

-

5 MPa

.

.

40

41

42

43

44

45

46

:

,

47

05

10

15

20

25

1 2 3 4 5 6 7 8 9 10 11

(

pa)

/

X=16,46 Mpa

S=0,9

X=13,96

Mpa

S=2,8

X=11,96 Mpa

S=2,4

X=14,69 Mpa

S=1,7

A

E 1 ( 15 cm

)

E LUMINATE

48

05

10

15

20

25

30

35

40

45

50

1 2 3 4 5 6 7 8 9 10 11

(

pa

)

A/A

X=32,86 MPa

S=3,5

X=32,09 MPa

S=3.9

X=27,67MPa

S=6.6

X=26,15 MPa

S=2.8

A

28 ( 15 cm

)

E LUMINATE

49

1)

&

(CURING)

2) H E

A) A L U M I N A T E

B) L K A L F R E E

:

50

H

~ 55 Pa

ME H

A L U M I N A T E

28 + 6 Pa E :

1.

2.

3.

ME H

A L U M I N A T E

51

05

10

15

20

25

30

35

40

45

50

55

60

1 2 3 4 5 6 7 8 9 101112131415161718192021222324252627282930313233343536373839

(M

pa)

A/A

15 cm # #

KYBOI 28HM Linear ( ) Linear () Linear (KYBOI 28HM)

28

28 = 32,42 Pa

28 = 26,83 Pa

E LUMINATE

52

05

10

15

20

25

30

35

40

45

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

(

pa

)

/

Potasium Aluminate

X = 37,29 Mpa

S = 2,0

Sodium

aluminate

X = 32,04 Mpa

28

-

53

H

~ 55 Pa

ME H

A L C A L F R E E

48 + 5 Pa

ME H

A L C A L F R E E

54

05

10

15

20

25

30

35

40

45

50

55

60

65

70

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

(M

pa)

/

ALCALI FREE

TOY

15 cm

55

1

2

3

&

4

5

56

.

,

57

30 ~ 40OC,

H

58

&

59

60

15 cm,

61

0,60 0,60

0,80

0,60

H = 0,15

62

EKTOEYOMENOY

63

.

Robot

64

(5-20cm) .

.

(~6cm,

(5-30kg/m3). .

1-2m .

66

67

68

69

70

Dortmund

71

GI 100, , d=200mm

=15GPa, Q188

72

ks=200MN/m3

73

74

(a) kr=ks kt=0; (b) kr=ks & kt=tan(2/3 )ks=0.43ks

7

D=0.2m => A=0.2m2

B25 R=17.5MPa

=2.1

N=982kN

M=19.9kNm

=(1/)RA(1-2e/d)

e=M/N=19.9/982=0.02

e/d=0.02/0.2=0.1982kN

75

7

D=0.2m => A=0.2m2

C20/25 fck=20MPa

. g=1.35

c=1.5

N=982kN

M=19.9kNm

=(0.85/g)(fck/c)A(1-2e/d)

e=M/N=19.9/982=0.02

e/d=0.02/0.2=0.1982kN

76

..

77

:

78

,

d=0.15m, :

N=(0.85/1.35)(20/1.5)0.15=1.26MN

1.26MN=1260kN>680kN

.

Wartekuppel

79

80

81

, 8

82

83

84

85

, .

..

.

86

B=8m, R=26kN/m3, fdyn=1.5, =2, ch=0.2

F=0.024B2Rfdyn=0.02464261.5=59.90kN

=dch/=5.00.2/2=0.5MPa

d=F/(2)=59.9/(20.51000)=0.0599m