ML19347E536
| ML19347E536 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek, Callaway  |
| Issue date: | 05/08/1981 |
| From: | Dromerick A, Edison G Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8105120573 | |
| Download: ML19347E536 (23) | |
Text
.
MEETING SUMM RY DISTRIBUTION
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X Temp. 73 F y
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24V 200 160 135 O I l
1 5
10 28 50 to 100 120.180 365 500 1000 5000 10000 Time Onder Strees + 1 Day (Days)
Figure B il
i CREEP CURVES KG6E 2nd Creep Test Option I-C gg 3.g Hiero Strain Final Report
. Age at leadingg 180 days 1200 1000 E
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w 800 s-600 Temp. I10 F
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10 28 50 90 100 120.180 365 500 1000 5000 10000 Time Onder Strees + 1 Day (Days)
Fistare c
l CREEP CURVES KC&E 2nd Creep Test Option I-C ggg g.1 Micro Strain Final Report
. Age at 14sdings 365 days 1200 l
1000 I
(
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f00 600 433 400 Temp. 110 F
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254 200 153
. Temp. 73 F W
l 109 90 0
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10 28 50 90 100 120.180 365 500 1000 5000 10000 Time theder Strees + 1 Day (Days)
F latst e D
1 i
Enclosure B to BLUE-Evaluation of Concrete Creep Test Results for Mix El for UE Unit No.1 (Final Report)
This final report on Creep Test is concerned with concrete mix El as designed by Pittsburgh Testing Laboratory and mixed by the University of California at Berkeley. Creep results are reported on cylinders kept at constant temperatures of 73 F and 110 F and loaded in frames, two cylinders to a frame, as follows.
1.
Two cylinders loeded at the age of 28 days and kept under load for 337 days at a constant temperature of 73 F.
2.
Two cylinders loaded at the age of 28 days and kept under load for 337 days at a constant temperature of 110 F.
3.
Two cylinders loaded at the age of 90 days and kept under load for 276 days at a constant temperature of 73 F.
4.
Two cylinders loaded at the age of 90 days and kept under load for 276 days at a constant temperature or 110 F.
5.
Two cylinders loaded at the age of 180 days and kept under load for 185 days at a.onstant temperature of 73 F.
6.
Two cylinders loaded at the age of 180 days and kept under load for 185 days at a constant temperature of 110 F.
7.
Two cylinders loaded at the age of 365 days and kept under load for 42 days at a constant temperature of 73 F.
8.
Two cylinders loaded at the age of 365 days and kept under load for 42 days at a constant temperature of 110 F.
Autogenous changes are reported an the cylinders loaded at the age of 365 days j
before loading.
l No e: Cylinders were loaded with a constant 2100 psi for the duration of the test.
. The reported average creep results are.as follows:
Age at Frame Cylinder Loading Days Average creep Re f.
Number' Temp. F Days Underload in microstrain Table 1
73 28 337
- 351 E
2 110 28
~337
- 470 F
3 73 90 276
- 265 G
4 110 90 276
- 368 H
5 73 180 185
- 186 I
6 110 180 185
- 269 J
7 73 365 42
- 109 K
8 f.10 365 42
- 150 L
Average Modulus of Elasticity and Compressive Strength (Table D)
Compressive Strength Modulus of Elasticity Age in Days in PSI x 10 PSI 7
5990 5.20 28 7600 5.63 90 8540 5.65 180 9180 6.24 365 9430 6.25 Extrapolated Ultimate Creep From Reference 1.
0.6 10 + t xC Cu
=
t 0.6 t
where Cu = Ultimate Creep Value Ce = Creep Value at time t t = Time at which experimental Creep Value C is recorded, in days i
1 For Fr ame No. 1 0.6 10 + 337 at (- 351) = 1.304 x (- 351) = - 458 micro-strain Cu
=
0.6 337 For Frame No. 2 0.6 10 + 337 x (- 470) = 1.304 x (-470) = - 613 micro-strain Cu
=
0.6 337 For Frame No. 3 0.6 10 + 276 x (- 265) = 1.343 x (- 265) = - 356 micro-strain Cu
=
0.6 276 For Frame No. 4 i
k O.6 10 + 276 x (- 368) = 1.343 x (- 368) = - 494 micro-strain Cu
=
0.6 276 For Frame No. 5 0.6 10 + 185 __ x (- 186) = 1.436 x (- 186) = - 267 micro-strain Cu
=
0.6 185 For Frame No. 6 0.6 10 + 185 x (- 269) = 1.436 x (- 269) = - 386 micro-strain Cu
=
- 0. 6 185 i
1 For Frame No. 7 0.6 10 + 42 x (- 109) = 2.062 x (- 109) = - 225 micro-strain Cu
=
0.6 42 For Frame No. 8 0.6 10 + 42 x (- 150) = 2.062 x (- 150) = - 309 micro-strain Cu
=
0.6 42
, 1 Summary:
The following is a summary of compressive strength modulus of elasticity and ultimate <.reep results:
Ultimate Creep **
Average
- Ult imate
( 40 years)
Comp.
Modulus
- of Creep Micro-Strain Frame Cylinder Strength Elasticity
( 40 years)
Correlation Number Temp F PSI x 10 PSI Micro-S train Factor Applied 5990 5.2 at 7 days at 7 days 1
73 7600 5.63
-458
-567 at 28 days at 28 days 2
110 7600 5.63
-613
-758 at 28 days at 28 days 3
73 8540 5.65
-356
-440 at 90 days at 23 days 4
110 8540 5.65
-494
-611 at 90 days
?t 28 days 5
73 9180 6.24
-267
-330 at 180 days at 180 days 6
110 9180 6.24
-386
-477 at 180 days at 180 days 7
73 9430 6.25
-225
-278 at 365 days at 365 days 8
110 9430 6.25
-309
-382 at 365 days at 365 days
- Compressive strength and modulus of elasticity tests are on cylinders kept at 73 F.
- Correlation factor (FC = 1.237) developed to adjust creep values from mix El tested at the University of California to estimate creep values expected from mix CC 171 approved for use in the Reactor Building wall and dome (see BLUE-398 dated 5/13/77).
Graphical representation of creep results is shown in figures A through D.
Reference 1.
" Design Aid for Predicting Creep and Shrinkage Properties of Concrete" by B. L. Meyers and D. E. Branson.
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+ - Test x Correlation Factor yn
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1000 t
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