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31 23 23 -1 VILLAGE ON THE GREEN -PARCEL 7C Issue Date 09.15.09 FLOWABLE FILL OFFICE BUILDING NO.1 AND BLACK BOX THEATRE; PARCEL 7-C-2 CARMEL, IN SECTION 31 23 23 -FLOWABLE FILL PART
1 -GENERAL 1.1 RELATED DOCUMENTS A. The general provisions of the contract, including general and supplementary conditions and the general requirements, apply to the work specified in
this section. 1.2 SUMMARY A. This Section includes flowable concrete fill for use as backfill. B. Related Sections include the following: 1. Division 03 Section “Concrete” for cast-in-place
concrete. 2. Division 31 Section "Earthwork" for backfill and compaction. 1.3 DEFINITIONS A. Flowable-Fill, as described in the American Concrete Institute’s (ACI) Committee 229 report,
is a Controlled Low Strength Material (CLSM) used as primary backfill or as an alternative to standard soil or stone backfill. It differs from Portland cement concrete in that it contains
a low cementitious content. 1.4 PERFORMANCE REQUIREMENTS A. Provide flowable fill that develops the following compressive strengths (f'm) at 28 days and as indicated on drawings: 1.
Flowable Fill – excavatable using handtools: 30 psi to 50 psi. 1.5 SUBMITTALS A. Design Mixes: For each flowable fill mix. Include alternate mix designs when characteristics of materials,
project conditions, weather, test results, or other circumstances warrant adjustments. B. Mix Design: Submit flowable fill mix design including the following information: 1. Area(s)
in the project where the mix will be used. 2. Complete mix constituent list by weight 3. Specific cementitious constituents by weight 4. Water cement ratio 5. Slump prior to addition
of water reducing admixtures. 6. Admixture identification with product sheets 7. Aggregate gradation by screen/sieve size 8. Test data substantiating design strength per ACI-301 Method
1 or 2. Test data submitted must be less than 2 years old. 9. Indicate amounts of mix water to be withheld for later addition at Project site.
31 23 23 -2 VILLAGE ON THE GREEN -PARCEL 7C Issue Date 09.15.09 FLOWABLE FILL OFFICE BUILDING NO.1 AND BLACK BOX THEATRE; PARCEL 7-C-2 CARMEL, IN C. Material Test Reports: From a qualified
testing agency indicating and interpreting test results for compliance of the following with requirements indicated, based on comprehensive testing of current materials: 1.6 QUALITY
ASSURANCE A. Manufacturer Qualifications: A firm experienced in manufacturing ready-mixed flowable fill products complying with ASTM C 94 requirements for production facilities and equipment.
B. Testing Agency Qualifications: An independent testing agency, acceptable to authorities having jurisdiction, qualified according to ASTM C 1077 and ASTM E 329 to conduct the testing
indicated, as documented according to ASTM E 548. 1. Personnel conducting field tests shall be qualified as ACI Concrete Field Testing Technician, Grade 1, according to ACI CP-1 or an
equivalent certification program. C. ACI Publications: Comply with the following, unless more stringent provisions are indicated: 1. ACI 229, “Controlled Low Strength Materials,” ACI
manual of Concrete Practices, Vol. 1, Detroit, Michigan, 1995 edition. 1.7 PROJECT CONDITIONS A. Install flowable fill only when temperatures are above freezing and will remain so for
a period of 36 hours after placement. B. Do not install flowable fill on frozen ground. C. Do not install flowable fill in snow, rain, fog, or mist. PART 2 -PRODUCTS 2.1 FLOWABLE FILL
MATERIALS A. Portland Cement: ASTM C 150, Type 1. 1. Use one brand of cement throughout project, unless otherwise acceptable to Architect/Engineer. B. Fly Ash: ASTM C 618, Type C. C.
Water: Drinkable. 2.2 ADMIXTURES A. Air-Entraining Admixture: ASTM C 260. 2.3 FLOW A. Minimum Flow Test: Provide 8-inch minimum diameter flow upon removal of a 3-inch
31 23 23 -3 VILLAGE ON THE GREEN -PARCEL 7C Issue Date 09.15.09 FLOWABLE FILL OFFICE BUILDING NO.1 AND BLACK BOX THEATRE; PARCEL 7-C-2 CARMEL, IN diameter by 6-inch tall cylinder containing
flowable fill placed on a smooth, level surface and struck off at the top. 2.4 FLOWABLE FILL MIXES A. Prepare design mixes for each type and strength of flowable fill determined by either
laboratory trial mix or field test data bases, as follows: 1. Proportion normal-weight flowable fill according to ACI 229. B. Use a qualified independent testing agency for preparing
and reporting proposed mix designs for the laboratory trial mix basis. C. Lean Flowable fill for Backfill: As indicated in performance requirements or, if not indicated, to match strength
of surrounding soils as directed by Soils Engineer. D. Air Content: Add air-entraining admixture at manufacturer's prescribed rate to result in flowable fill at point of placement having
an air content of 2 to 4 percent, unless otherwise indicated. 2.5 FLOWABLE FILL MIXING MIXING A. Ready-Mixed Flowable fill: Measure, batch, mix, and deliver flowable fill according to
approved mix design. PART 3 -EXECUTION 3.1 FORMWORK A. Use earth forms. 3.2 FLOWABLE FILL PLACEMENT A. Before placing flowable fill, verify that required inspections have been performed.
B. Do not add water to flowable fill during delivery, at Project site, or during placement, unless approved by Architect. C. Deposit flowable fill in forms in horizontal layers no deeper
than 24 inches and in a manner to avoid inclined construction joints. Place each layer while preceding layer is still plastic, to avoid cold joints. 1. Consolidate placed flowable fill
with mechanical vibrating equipment. Use equipment and procedures for consolidating flowable fill recommended by ACI 309R. 2. Do not use vibrators to transport flowable fill inside forms.
Insert and withdraw vibrators vertically at uniformly spaced locations no farther than the visible effectiveness of the vibrator. Place vibrators to rapidly penetrate placed layer and
at least 6 inches (150 mm) into preceding layer. Do not insert vibrators into lower layers of flowable fill that have begun to lose plasticity. At each insertion, limit duration of vibration
to time necessary to consolidate flowable fill and complete embedment of reinforcement and other embedded items without causing mix constituents to segregate.
31 23 23 -4 VILLAGE ON THE GREEN -PARCEL 7C Issue Date 09.15.09 FLOWABLE FILL OFFICE BUILDING NO.1 AND BLACK BOX THEATRE; PARCEL 7-C-2 CARMEL, IN 3.3 JOINT FILLING A. Remove dirt, debris,
saw cuttings, curing compounds, and sealers from joints; leave contact faces of joint clean and dry. 3.4 FIELD QUALITY CONTROL A. Testing Agency: Engage a qualified independent testing
and inspecting agency to sample materials, perform tests, and submit test reports during flowable fill placement according to requirements for compaction indicated by soils engineer.
B. Provide concrete testing for every 50 cubic yards of flowable fill placed. 1. Testing shall include 2 cylinders for compression breaks at 28 days. The cylinders may be store doff-site,
but must be stored in similar climate conditions and temperature as that of the actual placed flowable fill. 2. At least one test shall be taken from each concrete supplier used to provide
flowable fill. 3.5 PROTECTION A. Protect flowable fill from freezing for a period of 36 hours after placement and until flowable fill has set. END OF SECTION 31 23 23