Post on 20-May-2022
Ultra High Performance Concrete Presentation 2018, Houston Texas
UHPC Timeline
1964 Start of research in Denmark
1967 Bache, reports 350 MPa with small specimen made with strong compaction
1970 Using first time Superplastizier
1978 Bache, concrete and mortar with blended cement with 30 % ultra fine fillers, 280 MPaFirst of many Patents are placed
1983 Danish company founded to commercialize DSPResearch start to increase fracture engergy by strong aggregates and fiber reinforcement
1986 First aplications of DSP are Moulds, Security Industry, Wear Protection and Industrial Flooring
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Ultra High Performance Concrete Presentation 2018, Houston Texas
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Ultra High Performance Concrete Presentation 2018, Houston Texas
1986 Bache, develops Compact Reinforced Composite
1987 New applications and new markets: Semi flexible wearing courses, Concrete Repair and OffshoreFirst Spray projectsFirst Wear protection projects
1987 Development of High temperature resitant products and first projects
1988 First UHPC-Asphalt pavement combination projects for Airports
1990 First UHPC-Asphalt pavment combination projects in sea ports
1994 First flooring projects in warehouses
1999 First Offshore Windmill projects
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Ultra High Performance Concrete Presentation 2018, Houston Texas
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Ultra High Performance Concrete Presentation 2018, Houston Texas
UHPC - MATERIAL COMPOSITION
Cement:Binding material, contributes to the main part of the compressive strength
Microsilica:Densifies, contributes to the compressive strength, “lubricates” the aggregates
Superplasticizer:Breaks down agglomeration and packs the particles
AggregatesFit required properties (Stones and/or fibres)
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Ultra High Performance Concrete Presentation 2018, Houston Texas
Densif ied System with ultraf ine Particles
0.01 mm
CEMENT PASTE(Cement particles and water)w/c = 0,50 - 0,70
SUPER PLASTIZISED CEMENT PASTE(Cement particles,Superplastiziser and water)w/c = 0,30 - 0,35
DSP TECHNOLOGY(Cement, Microsilica,Superplastiziser and water)w/p = 0,18 - 0,22
1 mm
10 mm
Concrete Diamond
Microstructure
Thin section
Fracture surface
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Ultra High Performance Concrete Presentation 2018, Houston Texas
C
W
Standard cement binderLarge cement pores
W/Cratio
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Ultra High Performance Concrete Presentation 2018, Houston Texas
W
C
W
C
Standard cement binderLarge cement pore
W/Cratio
W/Cratio
UHPC cement binder withceramic aggregates and
fibersNo pore
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Ultra High Performance Concrete Presentation 2018, Houston Texas
Development of the compressivestrength of standard concretescompared to UHPC materialqualities
After less than 48 hours, achieves threetimes the strength of standard concrete
UHPC
Concrete
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Ultra High Performance Concrete Presentation 2018, Houston Texas
Strength development of UHPC atdifferent ambient temperatures
ExampleUHPC 1000 CastCompressive strength 210 MPa / 30457 psi
at5°C / 41°F 63 MPa / 9862 psi10°C / 50°F 126 MPa / 18274 psi20°C / 68°F 157 MPa / 22770 psi30°C / 86°F 168 MPa / 24366 psi
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UHPC
Ultra High Performance Concrete Presentation 2018, Houston Texas
Concrete5 mm
UHPC0 mm
Carbonation Chloride permeability Electrical resistivity
Carbonation depth after3,5 years at 65% RH, 20°C
Diffusion coefficient forChloride ions
Resistivity after 0,5 year at22°C, 100%RH
Concrete26x10-13
m²/sec
Concrete<0,1
k ohm m
UHPC0,6x10-13
m²/sec
UHPC20
k ohm m
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Ultra High Performance Concrete Presentation 2018, Houston Texas
Concrete20 mm
UHPC1 mm
Water permeabilityAccording to DIN 1048
Acid resistanceAccording to DIN 51091
Weight loss after 28 daysIn 70% sulphuric acid at 24,5°C
Concrete313 g/m2
UHPC114 g/m2
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Ultra High Performance Concrete Presentation 2018, Houston Texas
Product UHPC Concrete
Density kg/qqm 2900 2300
Compressiv strength MPapsi
130 – 25018800 - 36260
5 – 70725 - 10150
Flexural strength MPapsi
294200
1 – 5145 - 725
E-Modul MPa 70000 – 80000 20000 – 40000
Hardness Mohs 8 – 9 3 – 4
Thermal conductivity W/mK 1,5 2
Coeff. Of thermal expansion K-1 10x10-6 10x10-6
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Ultra High Performance Concrete Presentation 2018, Houston Texas
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