HomeMy WebLinkAboutSection 03375 Flowable Fill
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SECTION 03375 FLOWABLE FILL
PART 1 - GENERAL
1.01 SCOPE OF WORK:
A. This section specifies the requirements for flowable fill used for trenches, support for
pipe structures, culverts, utility cuts and other works where cavities exist and where
firm support is needed for pavements and structural elements. Flowable fill may also
be used to fill water and sewer lines, and fuel tanks placed out of service, and other
locations approved by the Engineer.
PART 2 - PRODUCTS
2.01 MATERIALS:
A. The material used shall conform with the requirements specified in Division III of the
FDOT Standard Specifications fro Road and Bridge Construction, latest edition, and
herein. Specific references are as follows:
B. Portland Cement (Types I, II or III)……………………………….. ………….Section 931
C. Fly Ash, Slag and Pozzolanic Materials for Portland Cement Concrete….Section 929
D. Fine Aggregate (Sand*)………………………………………………………..Section 902
E. Water…………………………………………………………………………….Section 923
*Any clean sand with 100% passing 3/8” sieve and not more than 10% passing with 200
mesh may be used.
2.02 MIX PROPORTIONS:
A. The contractor shall be responsible for producing a flowable mixture using these
guidelines and by adjusting his mixture design as called for by circumstances or as
may be directed by the ENGINEER.
B. Flowable fill material shall be proportioned to produce a 28-day compressive strength
of approximately 50-150 psi.
C. General mix quantities are as follows:
Components Pounds per Cubic Yard
Cement 50-100*
Fly Ash or Granulated 0-600
Blast Furnace Slag
Fine Sand 2,750
(adjust to yield one cubic
yard of flowable fill)
Water 500
(Maximum)
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* The percentage of cement may be increased above these limits only when early
strength is required and future removal is unlikely.
2.03 APPROVED MIXES OF “FLOWABLE FILL”:
The following are approved FDOT design mixes:
PLANT MIX NUMBER
Tarmac -end of Tpk. 06-FF-04
Fla. Rock & Sand -Card Sound 06-FF-05
Rinker Princeton 06-FF-07
Rinker Downtown 06-FF-08
Rinker LeJeune 06-FF-08
Rinker Sweetwater 06-FF-08
Rinker N. Miami 06-FF-08
Dade Concrete and Pumping 06-FF-09
Job-Mix Concrete Company 06-FF-10
Job-Mix Concrete Company 06-FF-11
PART 3 - EXECUTION
3.01 PRODUCTION AND PLANCIG:
Flowable fill shall be produced and delivered using concrete construction equipment.
Placing flowable fill shall be done by chute, pumping or other methods approved by the
ENGINEER.
3.02 CONSTRCUTION REQUIREMENTS:
The flowable fill shall be placed to the designated fill line without vibration or other means
of compaction. Placement shall be avoided during inclement weather, e.g. rain or ambient
temperatures below 40 degrees F. The Contractor shall take all necessary precautions to
prevent any damages caused by the hydraulic pressure of the fill during placement prior to
hardening. Also, necessary means to confine the material within the designated space
shall be provided by the Contractor
A. The flowable shall be proportioned and placed as specified herein. In general, the
strength desired is the maximum hardness that can be excavated at a later date
using conventional excavating equipment. No curing protection is required.
B. The fill shall be left undisturbed until material obtains sufficient strength. Sufficient
strength is 250 psi penetration resistance as measured using a hand held
penetrometer. The penetrometer shall be provided by the Contractor.
C. All flowable fill areas subject to traffic loads must have a durable riding surface.
D. An approved type of accelerator may be approved for the placement of "Flowable
Fill" in traffic areas when submitted to the Department for D.O.T. approval
END OF SECTION