Controlled Low Strength Material (CLSM) ‘Flowable Fill’

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Presentation transcript:

Controlled Low Strength Material (CLSM) ‘Flowable Fill’

Composition of Concrete Fill Cement Sand Water Air-Entraining Additive Elastizell Engineered Fill Darafill

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”

Specific Job Use Corpus Christi Seawall Project

Mixing Procedure Admixture added at site Added at site because of the consistency; Too much sloshing will overturn vehicle or material will leak out the back of the truck

Placement Procedure Longitudinally-cut pipe used as troughs

Placement Procedure Flow of concrete similar to water

Voids Before Placement Bulkheading required to contain flow

Voids After Placement Density low enough for hand excavation

Finished Section Used as formwork for concrete placement