1、*USACE / NAVFAC / AFCESA / NASA UFGS-03 37 13 (November 2009)-Preparing Activity: USACE (CW) SupersedingUFGS-03 37 13 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with UMRL dated October 2009*SECTION TABLE OF CONTENTSDIVISION 03 - CONCRETESECTION 03 37 13SHOTCRETE11
2、/09PART 1 GENERAL1.1 UNIT PRICES1.1.1 Shotcrete1.1.1.1 Payment1.1.1.2 Measurement1.1.1.3 Unit of Measure1.2 REFERENCES1.3 SYSTEM DESCRIPTION1.3.1 Strength1.3.2 Compressive Strength1.3.3 Flexural Strength1.3.4 Toughness Index1.4 SUBMITTALS1.5 QUALITY ASSURANCE1.5.1 Qualifications1.5.2 Preconstruction
3、 Test PanelsPART 2 PRODUCTS2.1 MATERIALS2.1.1 Cementitious Materials2.1.1.1 Portland Cement2.1.1.2 Blended Hydraulic Cement2.1.1.3 Pozzolan Other Than Silica Fume2.1.1.4 Ground Granulated Blast-Furnace Slag2.1.1.5 Silica Fume2.1.2 Aggregates2.1.3 Water2.1.4 Admixtures2.1.5 Curing Materials2.1.5.1 Im
4、pervious Sheet Materials2.1.5.2 Membrane-Forming Curing Compound2.1.6 Reinforcement2.1.6.1 Steel Fiber Reinforcement2.1.6.2 Other Types of ReinforcementSECTION 03 37 13 Page 1Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2.1.7 Air Content2.1.8 Air
5、Supply2.2 MIXTURE PROPORTIONS2.3 EQUIPMENT2.3.1 Dry Mix Batching and Mixing2.3.2 Delivery Equipment for Dry Mix2.3.3 Wet Mix Batching and Mixing2.3.4 Delivery Equipment for Wet MixPART 3 EXECUTION3.1 PREPARATION OF SURFACES3.1.1 Earth3.1.2 Existing Concrete3.1.3 Rock3.1.4 Shotcrete3.1.5 Construction
6、 Joints3.2 PLACEMENT OF SHOTCRETE3.2.1 General3.2.2 Placement Techniques3.2.2.1 Placement Control3.2.2.2 Corners3.2.3 Placement Around Reinforcement3.2.4 Cover of Reinforcement3.2.5 Placement Precautions3.3 REPAIR OF DEFECTS3.3.1 Defects3.3.1.1 Repairs3.3.1.2 Minor Patching3.3.2 Core Holes3.4 FINISH
7、ING3.4.1 Natural Gun Finish3.4.2 Cutting Screed3.4.3 Flash Coat3.4.4 Float and Trowel Finish3.4.5 Fiber-Reinforced Shotcrete3.5 CURING AND PROTECTION3.5.1 Initial Curing3.5.2 Final Curing3.5.3 Formed Surface3.5.4 Duration of Curing3.5.5 Temperature Considerations3.6 TESTS3.6.1 Strength Testing3.6.1.
8、1 Test Panel3.6.1.2 Test Cores3.6.1.3 Average Compressive Strength3.6.1.4 Average Flexural Strength3.6.1.5 Average Toughness Index3.6.2 Aggregate Moisture3.6.3 Grading3.6.4 Thickness3.6.5 Mixture Proportions3.6.6 Preparations3.6.7 Air Content- End of Section Table of Contents -SECTION 03 37 13 Page
9、2Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-*USACE / NAVFAC / AFCESA / NASA UFGS-03 37 13 (November 2009)-Preparing Activity: USACE (CW) SupersedingUFGS-03 37 13 (April 2006)UNIFIED FACILITIES GUIDE SPECIFICATIONSReferences are in agreement with
10、 UMRL dated October 2009*SECTION 03 37 13SHOTCRETE11/09*NOTE: This guide specification covers the requirements for materials, proportioning, application, and curing of shotcrete.Edit this guide specification for project specific requirements by adding, deleting, or revising text. For bracketed items
11、, choose applicable items(s) or insert appropriate information.Remove information and requirements not required in respective project, whether or not brackets are present.Comments and suggestions on this guide specification are welcome and should be directed to the technical proponent of the specifi
12、cation. A listing of technical proponents, including their organization designation and telephone number, is on the Internet.Recommended changes to a UFGS should be submitted as a Criteria Change Request (CCR).*PART 1 GENERAL*NOTE: The content of this specification is such that guidance given in EM
13、1110-2-2005, STANDARD PRACTICE FOR SHOTCRETE, is applicable.*1.1 UNIT PRICES*NOTE: If Section 01 22 00.00 10 MEASUREMENT AND PAYMENT is included in the project specifications, this paragraph title (UNIT PRICES) should be deleted from this section and the remaining appropriately edited subparagraphs
14、below should be inserted into Section 01 22 00.00 10.SECTION 03 37 13 Page 3Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-*1.1.1 Shotcrete1.1.1.1 PaymentPayment will be made for all costs associated with furnishing, delivering, and placing shotcret
15、e.1.1.1.2 MeasurementShotcrete will be measured for payment based upon the quantity in cubic meters yards of solid material gunned through the nozzles. the quantity per cubic meter yard, based on a unit length the area shotcreted to the thickness shown on the contract drawings.1.1.1.3 Unit of Measur
16、eUnit of measure: cubic meter yard.1.2 REFERENCES*NOTE: This paragraph is used to list the publications cited in the text of the guide specification. The publications are referred to in the text by basic designation only and listed in this paragraph by organization, designation, date, and title.Use
17、the Reference Wizards Check Reference feature when you add a RID outside of the Sections Reference Article to automatically place the reference in the Reference Article. Also use the Reference Wizards Check Reference feature to update the issue dates.References not used in the text will automaticall
18、y be deleted from this section of the project specification when you choose to reconcile references in the publish print process.*The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.A
19、CI INTERNATIONAL (ACI)ACI CP-60 (2002)Craftman Workbook for ACI Certification of Shotcrete NozzlemanASTM INTERNATIONAL (ASTM)ASTM A 820/A 820M (2006) Standard Specification for Steel Fibers for Fiber-Reinforced ConcreteASTM C 1077 (2009b) Standard Practice for Laboratories Testing Concrete and Concr
20、ete Aggregates SECTION 03 37 13 Page 4Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-for Use in Construction and Criteria for Laboratory EvaluationASTM C 1140 (2003a) Standard Practice for Preparing and Testing Specimens from Shotcrete Test PanelsAS
21、TM C 1141/C 1141M (2008) Standard Specification for Admixtures for ShotcreteASTM C 1240 (2005) Standard Specification for Silica Fume Used in Cementitious MixturesASTM C 1260 (2007) Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)ASTM C 136 (2006) Standard Test
22、Method for Sieve Analysis of Fine and Coarse AggregatesASTM C 150/C 150M (2009) Standard Specification for Portland CementASTM C 1567 (2008) Standard Test Method for Potential Alkali-Silica Reactivity of Combinations of Cementitious Materials and Aggregate (Accelerated Mortar-Bar Method)ASTM C 1609/
23、C 1609M (2007) Standard Test Method for Flexural Performance of Fiber-Reinforced Concrete (Using Beam with Third-Point Landing)ASTM C 171 (2007) Standard Specification for Sheet Materials for Curing ConcreteASTM C 231 (2009a) Standard Test Method for Air Content of Freshly Mixed Concrete by the Pres
24、sure MethodASTM C 266 (2008) Standard Test Method for Time of Setting of Hydraulic-Cement Paste by Gillmore NeedlesASTM C 309 (2007) Standard Specification for Liquid Membrane-Forming Compounds for Curing ConcreteASTM C 33/C 33M (2008) Standard Specification for Concrete AggregatesASTM C 42/C 42M (2
25、004) Standard Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of ConcreteASTM C 566 (1997; R 2004) Standard Test Method for Total Evaporable Moisture Content of Aggregate by DryingASTM C 595/C 595M (2008a) Standard Specification for Blended SECTION 03 37 13 Page 5Provided by IHSN
26、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Hydraulic CementsASTM C 618 (2008a) Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in ConcreteASTM C 685/C 685M (2007) Concrete Made by Volumetric Batching and Continuous MixingAST
27、M C 881/C 881M (2002) Standard Specification for Epoxy-Resin-Base Bonding Systems for ConcreteASTM C 94/C 94M (2009) Standard Specification for Ready-Mixed ConcreteASTM C 989 (2009a) Standard Specification for Ground Granulated Blast-Furnace Slag for Use in Concrete and MortarsU.S. ARMY CORPS OF ENG
28、INEERS (USACE)COE CRD-C 400 (1963) Requirements for Water for Use in Mixing or Curing Concrete1.3 SYSTEM DESCRIPTION1.3.1 Strength*NOTE: Compressive strength should be specified for nonfiber-reinforced shotcrete and flexural strength should be specified for fiber-reinforced shotcrete. Consult EM 111
29、0-2-2005 and the appropriate DM to fill in blanks.If a flexural toughness index requirement is deemed necessary for fiber-reinforced shotcrete, the minimum toughness index necessary for anticipated service conditions should be specified. See EM 1110-2-2005 and ASTM C 1116/C 1116M for guidance.*Final
30、 acceptance of the shotcrete will be based on compressive flexural strength results obtained from cores beams.1.3.2 Compressive StrengthThe required compressive strength of cores shall not be less than _ MPa psi at _ days age when tested in accordance with ASTM C 42/C 42M. The average compressive st
31、rength of cores taken from the structure test panel, representing a shift or not more than 40 cubic meters 50 cubic yardsof shotcrete tested at _ days of age, shall equal or exceed the required compressive strength specified with no individual core less than 85 percent of the required compressive st
32、rength. When the length of a core is less than 1.94 times the diameter, the correction factors given in ASTM C 42/C 42M will be applied to obtain the compressive strength of individual cores.SECTION 03 37 13 Page 6Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
33、rom IHS-,-,-1.3.3 Flexural StrengthFiber-reinforced shotcrete beams shall be obtained and tested in accordance with ASTM C 1140 and shall have a flexural strength of not less than _MPa psi at _ days age.1.3.4 Toughness IndexThe toughness index, I10 I20, of fiber-reinforced shotcrete beams shall be _
34、 at _ days age when tested in accordance with ASTM C 1609/C 1609M.1.4 SUBMITTALS*NOTE: Review submittal description (SD) definitions in Section 01 33 00 SUBMITTAL PROCEDURES and edit the following list to reflect only the submittals required for the project. Submittals should be kept to the minimum
35、required for adequate quality control.A “G” following a submittal item indicates that the submittal requires Government approval. Some submittals are already marked with a “G”. Only delete an existing “G” if the submittal item is not complex and can be reviewed through the Contractors Quality Contro
36、l system. Only add a “G” if the submittal is sufficiently important or complex in context of the project.For submittals requiring Government approval on Army projects, a code of up to three characters within the submittal tags may be used following the “G“ designation to indicate the approving autho
37、rity. Codes for Army projects using the Resident Management System (RMS) are: “AE“ for Architect-Engineer; “DO“ for District Office (Engineering Division or other organization in the District Office); “AO“ for Area Office; “RO“ for Resident Office; and “PO“ for Project Office. Codes following the “G
38、“ typically are not used for Navy, Air Force, and NASA projects.Choose the first bracketed item for Navy, Air Force and NASA projects, or choose the second bracketed item for Army projects.*Government approval is required for submittals with a “G“ designation; submittals not having a “G“ designation
39、 are for Contractor Quality Control approval. information only. When used, a designation following the “G“ designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:SD-06 Test ReportsMixture Prop
40、ortions; G; G, _SECTION 03 37 13 Page 7Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-The recommended mixture proportions, sources of materials, and all test results, for approval.AggregatesSuppliers test reports for aggregates showing the materials
41、 meet the requirements of this specification.Accelerator Compatibility; G; G, _Document stablishing the compatibility of the job cement and the proposed accelerators.Preconstruction Test PanelsCores and sawed concrete beams taken from test panels and tested.SD-07 CertificatesPortland CementCertifica
42、te of compliance with all specification requirements.PozzolansCertificate of compliance for fly ash and other pozzolans with all specification requirements.Silica FumeCertificate of compliance for silica fume with all specification requirements.Accelerating AdmixturesCertificate of compliance for ac
43、celerating admixtures with all specification requirements.Curing MaterialsCertificate of compliance for curing materials with all specification requirements.Steel Fiber ReinforcementCertificate of compliance for fiber reinforcement with all specification requirements.Qualifications; G; G, _Certified
44、 qualifications of each nozzleman.1.5 QUALITY ASSURANCEProvide facilities and labor, as may be necessary, for obtaining and testing representative test samples. Shotcrete shall be sampled and tested by the method given in paragraph STRENGTH TESTING in PART 3.SECTION 03 37 13 Page 8Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1.5.1 Qualific
