SYMPOSIA PAPER Published: 01 January 1998

Development of Engineering Properties for Regular and Quick-Set Flowable Fill


The purpose of this paper is to report relationships that have been developed in a study performed in Tulsa, Oklahoma, for bearing strength, diggability, and subsidence for regular and quick-setting flowable fills. The bearing strength parameters measured were California bearing ratio (CBR) and subgrade modulus (k). These parameters are typically used in the design of engineered backfill, subgrades, and pavement bases. More easily measured parameters such as hand-held mortar penetration resistance and 3 by 6-in. (76 by 152-mm) cylinder unconfined compressive strength through 365 days were also determined. Aggregate base CBR test values are presented to serve as benchmarks for comparing to CBR values of flowable fills since aggregate base has been used extensively and CBR values are widely known and used in the engineering and construction communities. This paper also presents an economic analysis and a controlled full-scale diggability assessment of regular and quick-set flowable fills. The results of our testing program, excavatability assessment, and economic analysis demonstrate the advantages of quick-setting flowable fills over regular flowable fills for use in street/cut repair applications.

Author Information

Pons, F
Law Engineering and Environmental Services, Inc., Tulsa, OK
Landwermeyer, JS
Law Engineering and Environmental Services, Inc., Tulsa, OK
Kerns, L
, Tulsa, OK
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Developed by Committee: D18
Pages: 67–86
DOI: 10.1520/STP13063S
ISBN-EB: 978-0-8031-5383-7
ISBN-13: 978-0-8031-2477-6