high_performance_concrete
TRANSCRIPT
-
8/7/2019 high_performance_concrete
1/23
Use of Ultra-High Performance Concrete in
eotec n ca an u structure pp cat ons
PI: Muhannad Suleiman
Co-PI: Sri Sritharan .
January 13, 2009
-
8/7/2019 high_performance_concrete
2/23
Research Funding
Seed funding received from IHRB for a high-risk, high-reward project that can lead to
substantive advancements in highway
transportation
2
-
8/7/2019 high_performance_concrete
3/23
Objectives
Demonstrate the potential use of UHPC in
geotechnical applications
large-scale tests and analytical procedures
-
8/7/2019 high_performance_concrete
4/23
Motivation
ran a enges ssue y :
Extending service life of bridges to 75 years with minimal
Optimizing structural systems using new materials
Piles made of conventional materials have suffered
damage
-
8/7/2019 high_performance_concrete
5/23
Why UHPC?
Compressive Strength 26-30 ksi 12-18 ksi 4-8 ksi
Tensile Strength 1.7 ksi 0.8-0.9 ksi 0.3-0.7 ksi
Elastic Modulus 8000 ksi 4800-6400 ksi 3600-5100 ksi
Durability Up to 400x lower Up to 700x lower
HPC
crete
crete
crete
crete
crete
0.8
1
lativeto
crete
PC
PC
PC
UHPC
PC
HPC
PC H
PC
HPC
NormalCo
NormalCo
NormalCo
NormalCo
NormalCo
0.2
0.4
.
arameterR
NormalCo
UUH
UH
UH
0
Chloride IonPenetration Depth
Oxygen Permeabilty Water Absorption Carbonation Depth (3years)
ReinforcementCorrosion Rate
P
-
8/7/2019 high_performance_concrete
6/23
Tas s
-
sub-structural systems related to transportation structures in theUnited States and abroad
Design of UHPC pile section
Conduct comparative driveability study for UHPC and other piles Conduct laboratory tests on UHPC pile elements
Conduct dynamic tests (PDA/CAPWAP) on UHPC and steel piles
-
-
8/7/2019 high_performance_concrete
7/23
Pile Section Shapes Considered
Simple H-Shape X-Shape Tapered H-Shape
-
8/7/2019 high_performance_concrete
8/23
Final Section Properties
Parameter Steel HP 10 x 57 UHPC Tapered H-Shape
Area 16.8 in2 56.8 in2
Wei ht ft 57.2 lb 61.1 lb
Moment of Inertia 294 in4 795 in4
Stiffness Term (EI) 8.53106 kipin2 6.36106 kipin2
-
8/7/2019 high_performance_concrete
9/23
Constructionb
-
8/7/2019 high_performance_concrete
10/23
Laboratory Testing
Top Tilt
-10.00000 0.00002 0.00004 0.00006 0.00008 0.00010
80
100
700
800
900
1000
,
ip)
Calculated Response
String
Deflection
Gau es
40
60
300
400
500
600
Moment,M(
kNm)
Moment,M(i
n Lab Test Measured Data
DCDTs
0
20
0
100
200
0.0000 0.0005 0.0010 0.0015 0.0020 0.0025 0.0030
Curvature, (in-1)
-
8/7/2019 high_performance_concrete
11/23
Field Investigation: US63 Oskaloosa, IA
-
8/7/2019 high_performance_concrete
12/23
Site Soil ProfileFriction Ratio F %Friction f ton/ft2Ti Resistance ton/ft2 Undrained Shear Stren th s siSoil ClassificationSPT Blow Count blows/ft
0% 5% 10% 15%
0 2 4 6 8
0 500 1000
00
0 20 40 60 80 100
20 30 40 50 60
Friction Angle, Clay
0
5
0
5
0 50 100
2
4Clay
10
Fine
Grained
10
6 Depth(m)
15
20
Sand
Sandy Siltto Clayey
Silt
15
20Depth(ft)
8
25
30
Sandy Silt to
Sand toSilty Sand
25
30
0 200 400 600
Friction, fs (kPa)
0 50000
Tip Resistance, qc (kPa)
0 200 400 600
10
36
Undrained Shear Strength, su (kPa)
Clay 35
ayey t
Gravelly Sandto Sand
StiffFine
Grained35
-
8/7/2019 high_performance_concrete
13/23
Field Testing Plan
Reaction Pile Reaction Pile
6.5 ft 6.5 ft5.0 ft
Unit UHPC 1 Steel Pile
4.0 ft
Reaction Pile Reaction Pile
Unit UHPC 2
-
8/7/2019 high_performance_concrete
14/23
Driving of UHPC and Steel Piles
Hammer
PileLeads
PDA Accelerometer
PDA Strain Gauge
-
8/7/2019 high_performance_concrete
15/23
Driving Logs
0
um ows
0 50 100 150 200 250 3000
h(m
)
2
3
h(ft)
5
10
.
Blows/0.3 m of UHPC 1
Cum blows for steel HP 10x57
Cum blows for UHPC 1
etrationDept
5
6
etrationDept
15
20
Pe
n
8
9
Pe25
30
Blows/ ft
0 5 10 15 20 25
1135
-
8/7/2019 high_performance_concrete
16/23
Driving
-
8/7/2019 high_performance_concrete
17/23
Vertical Load Tests
-
8/7/2019 high_performance_concrete
18/23
Load-Displacement Relationship
Load (kN)
0 200 400 600 800 10001200 14001600 18000 0.0
Load (kN)
0 200 400 600 800 10001200 14001600 18000 0.0
D
ent(mm)
4
8ment(in.)
.
0.2
0.3Davis
Extrapolation
men
t(mm)
4
8men
t(in.)
.
0.2
0.3Davis
sonFailure
ssonPileCapacity=198Ki
Displace
12
16
Displac
.
0.5
0.6
nFailureCriterionDisplace
12
16
Displace.
0.5
0.6
rterion
20
Load (Kips)
0 50 100 150 200 250 300 350 400
.
Davisson Pile Capacity = 369 Kips20
Load (Kips)
0 50 100 150 200 250 300 350 400
.
UHPC Steel Pile
-
8/7/2019 high_performance_concrete
19/23
Load Transfer
Vertical Load (kN)
0 200 400 600 800 1000-1
183.7
Load (kN)
1
2
3
5
10
207.8
234.4
261.7
292.0
313.7345.2
Depth(m)
4
5
6Depth(ft)
15
20
369.5
396.6
425.7
451.3
477.3
502.7
Ground Surface
7
8
9
25
30
529.2554.8
616.6
700.3
790.0
10
Vertical Load (Kips)
0 20 40 60 80 100 120 140 160 180 200 220
.
-
8/7/2019 high_performance_concrete
20/23
Lateral Load Test
-
8/7/2019 high_performance_concrete
21/23
UHPC Pile Lateral Load-Displacement
100
110
.
0 1 2 3 4 5 6 7 8 9
24
kN)
70
80
90
ips
)
16
18
20
Bundle of wiresShear cracks
ateralLoad(
40
50
60
ateralLoad(
10
12
14(a)
10
20
30L
2
4
6
UHPC 1
UHPC 2Bundle of wires
Lateral Displacement (mm)
0 50 100 150 200 250
0 0(b)
-
8/7/2019 high_performance_concrete
22/23
UHPC Pile Lateral Load-Displacement
tra n )
0 200 400 600 800 1000-1
0
1
2
0
4
pth(m) 3
4
5 epth(ft)12
16
15.9 kN
27.9 kN
D 6
7
8
D20
24
.
55.9 kN
68.8 kN
77.8 kN
9
10
28
32
92.7 kN
101.2 kN
-
8/7/2019 high_performance_concrete
23/23
Questions