compatibility of ultra high performance concrete as repair material

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esults obtained in this project were based on tests performed on Ductal®JS1000. Theresults of the investigation are summarized in Table 2.4.Table 2.4Results of UHPC (Ductal®) with different curing treatments under different tests about durability. Adaptedfrom Graybeal and Tanesi (2007)Test Steam UntreatedTemperedSteamDelayedSteamASTM C1202-05;Chloride IonPenetrability (coulombs)Negligible(18) at 28daysVery low(360) at 28daysNegligible(76) at 56 daysNegligible(39) at 28daysNegligible(26) at 56daysNegligible(18) at 28 daysAASHTO T259-80;Chloride IonPermeability (kg/m3).NSC average: 0.051kg/m3ExtremelylowExtremely lowExtremelylowExtremely lowASTM C 627-03: ScalingresistanceNo scaling No scaling No scaling No scalingASTM C 944-99:Abrasion resistance.Weight Loss (g) perabrading0.13 (Cast)0.30 (Blasted)0.17 (Ground)1.00(Cast)2.20 (Blasted)0.73 (Ground)0.07(Cast)0.30 (Blasted)0.20 (Ground)0.10(Cast)0.13 (Blasted)0.13(Ground)ASTM C 666-03(Procedure A): Freeze-Thaw DegradationResistance. Relativedynamic modulus after690 cyclesRDM: >95%Deterioration:nonexistentRDM: >110%Deterioration:nonexistentRDM: around100%Deterioration:nonexistentRDM: around100%Deterioration:nonexistentASTM C 1260-05:Alkali-silica reaction(ASR). Expansion at 14days0.0130.013 with 28of curingtreatment0.005 0.001The conclusions that were drawn in this study were consistent with the results obtainedby other authors, such as that UHPC had a high resistance to chemical penetration due toits very low level of water absorption, concretes with a low water/binder ratios and14
elevated silica fume content had a high scaling resistance and UHPC has excellentbehavior under freeze-thaw cycling (Graybeal and Tanesi 2007).As is well known, durability can be defined as the ability to resist weathering action,chemical attack and abrasion while maintaining desired engineering properties. On thebasis of the above results, it is reasonable to state that one of the most beneficial featuresof UHPC is its excellent durability. This new extraordinary performance constructionmaterial is suitable to address the problems of rapidly deteriorating transportationinfrastructures.UHPC, due to its outstanding durability properties, could help to reduce waste and theenvironmental impacts that the construction industry produces, especially, in the repairfield, where UHPC could be used on a protective barrier that prevents water or chemicalpenetration into infrastructure components, potentially resulting in a significant increasein service-life. As shown in Figure 2.6, UHPC is a breakthrough in the durabilityperformance of concrete structures and entails a marked advancement even to HPC.Figure 2.6 Durability property of UHPC with respect to Normal Concrete and HPC. Suleiman et al. (2008)15
Page 1 and 2: COMPATIBILITY OF ULTRA HIGH PERFORM
Page 3 and 4: Table of ContentsList of Figures ..
Page 5 and 6: 4.3.2 Discussion ..................
Page 7 and 8: Figure 3.14 CSP index .............
Page 9 and 10: Table 4.7 Summary of indirect tensi
Page 11 and 12: List of AbbreviationsACI.AFtASTM.CO
Page 13 and 14: 1 Introduction and MotivationCurren
Page 15: 2 Background and Literature ReviewT
Page 18 and 19: spaces and to decrease the amount o
Page 20 and 21: water/binder=constantChoose steel f
Page 22 and 23: UHPC formulations and provides a se
Page 24 and 25: Table 2.3Comparison of UHPC materia
Page 28 and 29: 2.1.3.4 Environmental Impact of UHP
Page 30 and 31: 1997). Emmons and Vaysburd (1996) d
Page 32 and 33: e) ConstructabilityIt is recommenda
Page 34 and 35: Table 2.5, continuedCementitious ma
Page 36 and 37: • Rehabilitation of a bridge pier
Page 38 and 39: UHPC is a cost-effective solution i
Page 40 and 41: apparatus will measure the shear st
Page 42 and 43: substrate while the scarifying meth
Page 44 and 45: such test configuration, this upper
Page 46 and 47: From the equilibrium of forces of F
Page 48 and 49: The first layer, also called penetr
Page 50 and 51: 3 MethodologyThis report aims to st
Page 52 and 53: f sp = 2 ∗ PA ∗ π in psi Equat
Page 54 and 55: that the bond interface, in this lo
Page 56 and 57: Ductal® premix is typically compri
Page 58 and 59: associated test results (temperatur
Page 60 and 61: Figure 3.2 Detail of splitting tens
Page 62 and 63: 3.3.3 Pull-off testPull off test wa
Page 64 and 65: (a) Chipped surface, slightlybrushe
Page 66 and 67: (a) Molds to cast slant shearspecim
Page 68 and 69: Timber moulds were used to cast the
Page 70 and 71: macrotexture depth was measured in
Page 72 and 73: As shown in the above tables, the m
Page 74 and 75: (a) Concrete substrate under water
Page 76 and 77:
used, as shown in Figure 3.17. A fa
Page 78 and 79:
Equation 2.2 and Equation 2.3 were
Page 80 and 81:
(a) Steel disks glued to the UHPC s
Page 82 and 83:
value to the lowest one in the foll
Page 84 and 85:
Transversal frequency (Hz)255025002
Page 86 and 87:
115113Relative Dynamic Modulus (%)1
Page 88 and 89:
Only those specimens with a grooved
Page 90 and 91:
Table 4.6, continued.MeanMeanCOV,st
Page 92 and 93:
concrete or bond/concrete while for
Page 94 and 95:
surface treatment applied. In contr
Page 96 and 97:
Table 4.8Summary of slant-shear tes
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(a) B(C): Bond due to concrete fail
Page 100 and 101:
3143Bond Capacity, (psi)30002500200
Page 102 and 103:
The different failure modes obtaine
Page 104 and 105:
failures occurred in the concrete s
Page 106 and 107:
property of the concrete has higher
Page 108 and 109:
5.1.1 Combination of Splitting Tens
Page 110 and 111:
5.1.4 Overall performancea. For thi
Page 112 and 113:
mismatch and load eccentricity. Tho
Page 114 and 115:
6 ReferenceAbu-Tair, A. I., Rigden,
Page 116 and 117:
Climaco, J. C. T. S., and Regan, P.
Page 118 and 119:
Graybeal, B., and Tanesi, J. (2007)
Page 120 and 121:
Misson, D. (2008). "Influence of Cu
Page 122 and 123:
Silfwerbrand, J. (1990). "Improving
Page 124 and 125:
7 Appendix: NSC mix designsTable 7.
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Table 7.33rd mix for the splitting
Page 128 and 129:
Table 7.51st mix for the splitting
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Table 7.73rd mix for the splitting
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Figure 8.2 Concrete retarder inform
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Table 9.1, continued.BrBr w/oBr 300
Page 136 and 137:
Table 9.2, continued.TrialBrushed 6
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10 Appendix: Splitting tensile pris
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Table 10.1, continued.128
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Page 144 and 145:
Page 146 and 147:
Page 148 and 149:
Table 10.2Splitting monolithic NSC
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11 Appendix: Slant-shear specimens
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Page 154 and 155:
Page 156 and 157:
PortionNumberof 1figures/tables/ill
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Figure 2.5Miguel Angel Carbonell Mu
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Miguel Angel Carbonell Munoz Mon, M
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Miguel - not sure what you need fro
Page 164 and 165:
End Page 1235Type of UsePortionNumb
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Type of UseIntended publisher of ot
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