evaluation of portland/limestone performance cements (astm
TRANSCRIPT
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Strength. Performance. Passion.
© 2013
Evaluation of Portland/Limestone Performance Cements (ASTM C1157)
in Colorado and Utah Transportation and Commercial Projects –
2007 to present
Todd S. Laker
Senior Technical Service Engineer
Holcim (US) Inc.
Brooke W. Smartz
Senior Market Manager, Sustainable Products
Holcim (US) Inc.
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Portland/Limestone Cement Projects
� +150 miles of concrete paving in Colorado and Utah
Performance and Environmental Benefit
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CDOT and UDOT Specifications
� Allow portland-limestone cements that meet ASTM C1157
performance specification for GU (General Use), MS (Moderate
Sulfate Resistance) and HS (High Sulfate Resistance)
� Supplementary cementitious materials required for applications
that require resistance for sulfate attack and/or alkali silica
reactivity for both ASTM C150 and ASTM C1157 cements
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Verifying Portland Limestone Cement Durability
� Holcim ASTM C595 (Type IL) or ASTM C1157
cements are tested for durability performance. Tests
generally include:
� Fresh & Hardened concrete properties
- Requirements are met through concrete mix design – ASTM
� Sulfate Resistance - ASTM C1012
� Alkali-Silica Reactivity - ASTM C1260/1567
� Freeze Thaw & Deicer Scaling Resistance - ASTM C666 & C672
� Shrinkage – ASTM C157
� Chloride Ion Penetration – ASTM C1202
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How do Portland/Limestone Cements compare?
ASTM Designation PLC vs C150 PLC vs C150 PLC vs C150 PLC vs C150 PLC vs C150
Strength 28D (C39) Equal Better Better Better Equal
Sulfate (C1012) Equal Equal Equal Equal Equal
ASR (C1260/C1567) Better Equal Equal Equal Equal
Freeze-Thaw (C666) Equal Equal Equal Equal Equal
Deicer Scaling (C672) Equal Equal Equal Equal Equal
Shrinkage (C157) Equal Equal Equal Equal Equal
Permeability (C1202) Slightly Better Equal Equal Equal Equal
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How do Portland/Limestone cements perform in the
field?
� Equal or improved to C150 cements
� Strength
� Set time
� Water demand
� Compatibility with fly ash
� Compatibility with admixtures
� Improved finishability
� Lower environmental impact
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Devil’s Slide, Utah Cements
� Type V clinker
� C3A <5%
� ASTM C150 Type II/V
� High sulfate resistance
- C3A <5%
� <5% limestone per ASTM C150� Naeq <0.60%
� ASTM C1157 Type GU/MS
� General Use/Moderate Sulfate resistance
- ASTM C1012, sulfate performance test
� 10% limestone
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Utah PLC Case Studies
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Lost Creek Road Morgan, Utah
� Rural County Road
� Constructed 2009
� Major Truck Traffic
� Construction Limitations
� Mountain weather issues
� Performance System
� 10% Limestone Cement
� 20% Class F fly ash
� Compressive strength
� Design 4000 psi, average 5120 psi
� Flexural strength
� Design 650 psi, avg 720 psi
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104th South, Salt Lake City, Utah
� Pooled Fund Ternary Study (2009)
� University of Utah* (Tikalsky)� 10% Limestone Cement� 25% Class F Fly ash
� Single days production
� Control Section Strength*
� 28 D Compressive - 4454 psi
� Actual Test Section Strength*
� 28 D Compressive - 5396 psi
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SR 201, Salt Lake City, Utah
� Eastbound lanes paved August
2009 with ASTM C150 Type II/V
� Westbound lanes paved October
2009 with ASTM C1157 10%
portland/limestone cement
� Both mixes contained 25% Class F
fly ash
� Eastbound Strength
� Compressive ~5000 psi
� Average Concrete Temp ~70 F
� Westbound Strength
� Compressive ~4500 psi
� Average Concrete Temp ~50 F
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UTA FrontRunner South Salt
Lake City to Provo, Utah
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UTA FrontRunner South Salt
Lake City to Provo, Utah� Keystone Concrete Masonry Units (CMU)
� 10% Limestone Cement� 15% Class F Fly ash
� 350,000 square feet or retaining wall
� Block on the project Averages:
� 28 D Compressive - 6,500 psi� Absorption of 5.3%
� 37 Foot Tall Retaining Wall� 55 block courses above grade� 10 block courses below grade
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University of Utah Meldrum Building
� Constructed 2009-2010
� Designed to meet LEED Silver certification
� Technical SCC mixtures
� Architectural Finishes
� Performance System
� Portland/limestone cement� 20% Class F Fly Ash
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University of Utah Meldrum Building
� Lightweight
� Winter placement
� Compressive
strength
� SCC Design 4000 psi
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Ben Lomond High School – Ogden, Utah
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Ready Mix Maintenance Facility
� LEED Certification is pending
� Silver or Gold
� 13, 915 Square feet
� Performance System
� Portland/limestone cement
� 20% Class F Fly Ash
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Portland, Colorado Cements
� Type II clinker
� C3A <8%
� ASTM C150 Type I/II
� General use/Moderate sulfate resistance
- C3A <8%
� <5% limestone per ASTM C150� Naeq >0.70%
� ASTM C595 Type IP(HS)
� 25% Class F fly ash
� ASTM C1157 Type GU/MS
� General Use/Moderate Sulfate resistance
- ASTM C1012, sulfate performance test
� 10% limestone
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Colorado PLC Case Studies
Performance & Lower Environmental Impact
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City of Denver Concrete Paving
40th & Havana and Holly Street
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City of Denver Concrete Paving
� Aligns with Denver Greenprint Program
� 40th & Havana - side by side comparison
of ASTM C150 I/II and ASTM C1157 GU
cements (2007)
� 20% Class C fly ash
� No noticeable performance differences
� Winter construction
� Holly Street - Ready-mix concrete supply
(2008)
� 25% Class C fly ash
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City of Denver Concrete Paving
Central Park Boulevard
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DIA Pena Boulevard
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US HW 287 Near Lamar, CO
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US HW 287 Near Lamar, CO
� 7 Miles PCCP (2008)
� Hot dry summer construction
� Ports to Plains US Highway route
� Heavy truck traffic
� 20% Class F fly ash
� 695 psi average 28-day flexural strength
� Contractor received quality incentive per CDOT specifications
� Used in CDOT concrete paving on a regular basis
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US HW I-25 Near Castle Rock, CO
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US HW I-25 Near Castle Rock, CO
� 5 Miles PCCP (2008)
� Major Interstate Highway
� 20% Class F fly ash
� 720 psi average 28-day flexural strength
� Contractor received quality incentive per CDOT specifications
� Used in concrete paving on a regular basis in Colorado
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Pueblo County Health Department
Pueblo, Colorado
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Pueblo Judicial Center – Pueblo, Colorado
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Blue Spruce Habitat for Humanity Project
� Part of AIA Design Build Contest
� Will be featured at 2013 AIA National Convention in Denver
� Portland/limestone cement in the concrete
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Keep in mindN
� No cement or scm’s can offset low quality
concrete
� Durable concrete depends on:
� Appropriate mixture proportions
� Lower w/cm
� Air entrainment in F/T conditions
� Proper placement
� Curing
� Maintenance
� When good practices are followed, concrete
will attain its expected service life
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� Projects demonstrate concrete made with portland/llimestonecements are readily constructible and can easily achieve specified strength requirements.
� Durability testing shows similar or improved performance to ASTM C150 cements
� Portland/limestone cements can provide performance and lower environmental impact
Summary
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Over 150 miles of paving in Colorado and Utah
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Thank You!
Any Questions?
Todd Laker, LEED AP
Holcim (US) Inc.
[email protected] or 801-829-2178
Brooke Smartz, LEED AP
Holcim (US) Inc.
[email protected] or 303-716-5288