LICENTIATE THESIS - Luleå tekniska universitet

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Paper A CONCRETE STRENGTH DEVELOPMENT IN SWEDISH BRIDGES by Håkan Thun, Lennart Elfgren and Ulf Ohlsson
Page 1: LICENTIATE THESIS Evaluation of Con
Page 5: Preface This licentiate thesis pres
Page 8 and 9: Evaluation of Concrete Structures I
Page 10 and 11: Evaluation of Concrete Structures I
Page 12 and 13: Evaluation of Concrete Structures 4
Page 14 and 15: A. Simplified check A1. In-situ ins
Page 19 and 20: Evaluation of Concrete Structures G
Page 21 and 22: Lok-Strength & Capo-Strength F [kN]
Page 25 and 26: Evaluation of Concrete Structures a
Page 31 and 32: Evaluation of Concrete Structures t
Page 33: Evaluation of Concrete Structures d
Page 36 and 37: Evaluation of Concrete Structures T
Page 38 and 39: Evaluation of Concrete Structures -
Page 41: 6 Outlook Evaluation of Concrete St
Page 44 and 45: Evaluation of Concrete Structures E
Page 49 and 50: CONCRETE STRENGTH DEVELOPMENT IN SW
Page 51 and 52: strength of all bridges along the r
Page 53 and 54: USED METHODS The methods that have
Page 55 and 56: underestimated. Rockström & Molin
Page 57 and 58: Eight road underpasses In order to
Page 59 and 60: Table 2 Concrete compression streng
Page 61 and 62: Another correlation to determine th
Page 63 and 64: Table 3 Concrete tensile strength f
Page 65 and 66: The regression equation is: F = 0.5
Page 67 and 68: cores were taken out later on they
Page 69 and 70: German Petersen C. (1997). LOK-test
Page 71: Paper B LOAD CARRYING CAPACITY OF C
Page 74 and 75: INTRODUCTION Railway sleepers made
Page 76 and 77: Figure 2 Picture showing how much o
Page 78 and 79: Group 3 No cracks on the upper side
Page 80 and 81: Figure 7 Forces acting on a mass m
Page 82 and 83: Figure 10 The horizontal track forc
Page 84 and 85: Figure 12 Failure of sleeper no. 2
Page 86 and 87: Load [kN] 350 300 250 200 150 100 5
Page 88 and 89: Horizontal force [kN] 140 120 100 8
Page 90 and 91: The mean value for 18 tensile tests
Page 92 and 93: Possible failure mechanisms are ill
Page 94 and 95: the level of the applied load. The
Page 96 and 97:
Sahlin, Sven and Sundqvist, Håkan.
Page 99 and 100:
CONCRETE FATIGUE CAPACITY. A STUDY
Page 101 and 102:
The fatigue tests in this paper can
Page 103 and 104:
The concrete mixtures used for the
Page 105 and 106:
Load [kN] 25 20 15 10 5 0 0 10 20 T
Page 107 and 108:
Tensile strength [MPa] 5 4 3 2 1 0
Page 109 and 110:
Strain [‰] 0.8 0.6 0.4 0.2 0 Load
Page 111 and 112:
specimens. For series A no indicati
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REFERENCES Albert, W A J, (1837):
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Strain [‰] 0.8 0.6 0.4 ε max 0.2
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C = dε / dN [× 10 −6 ] 100 10 1
Page 119:
Test series B: S min = σ min / f c
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SHEAR FATIGUE CAPACITY - A COMPARIS
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φ16 s100 B=1000 - 3 - d=295 Figure
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P = 22.5 tons ⇒ V dim = 54.43 ·
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a) b) 1,0 0,5 1,0 0,5 UIC EC2, Aas-
Page 131 and 132:
As0 ρ = b ⋅ d , not higher than
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No risk of fatigue failure is assum
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A sl b w σ cp N Sd = the area of t
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Table 5.2 Fatigue strength. Fatigue
Page 139 and 140:
Table 5.3 Number of cycles to failu
Page 141 and 142:
Vmin = V1 = 22.08 · 1.55 = 34.22 k
Page 143 and 144:
If this method is applied also for
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For example: for the strength class
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BBK 94 (1994, 1996): Swedish Code f
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Excerpt from EC2-draft (1999) First
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Page 162 and 163:
- 40 -
Page 165:
Excerpt from EC2-1 (1991) and EC2-2
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Page 179:
Excerpt from MC90 (1990) CEB-FIP Mo
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- 60 -
Page 184:
Licentiate Theses Lennart Fransson
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