Controlled Low Strength Material (CLSM) aka

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Controlled Low Strength Material (CLSM)aka
Flowable Fill

• Presented by
• Daniel Garza

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Composition of Concrete Fill

• Cement
• Sand
• Water
• Air-Entraining Additive
• Elastizell Engineered Fill
• Darafill

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Property Comparisons
Property CLSM Type II Concrete
Cast Density 75-90 pcf 150 pcf
28-day compressive strength 90 psi 3000 psi
Slump unattainable 3 - 4
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Specific Job Use

• Corpus Christi Seawall Project

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Mixing Procedure

• Admixture added at site

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Placement Procedure

• Longitudinally-cut pipe used as troughs

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Placement Procedure

• Flow of concrete similar to water

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Voids Before Placement

• Bulkheading required to contain flow

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Voids After Placement

• Density low enough for hand excavation

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Finished Section

• Used as formwork for concrete placement

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References

• Elastizell Corporation of America
• www.elastizell.com
• Grace Construction Products
• www.na.graceconstruction.com
• Shiner Moseley Associates
• www.shinermoseley.com
• Unicon Concrete
• www.carolinapumping.com