1、03-11 03 30 00 - 1 SECTION 03 30 00 CAST-IN-PLACE CONCRETE SPEC WRITER NOTE: Delete between / - / if not applicable to project. Also delete any other item or paragraph not applicable in the section and renumber the paragraphs. PART 1 - GENERAL 1.1 DESCRIPTION: This section specifies cast-in-place st
2、ructural concrete and materials and mixes for other concrete. 1.2 RELATED WORK: A. Materials testing and inspection during construction: Section 01 45 29, TESTING LABORATORY SERVICES. B. Concrete roads, walks, and similar exterior site work: Section 32 05 23, CEMENT AND CONCRETE FOR EXTERIOR IMPROVE
3、MENTS. 1.3 TESTING AGENCY FOR CONCRETE MIX DESIGN: A. Testing agency retained and reimbursed by the Contractor and approved by Resident Engineer. B. Testing agency maintaining active participation in Program of Cement and Concrete Reference Laboratory (CCRL) of National Institute of Standards and Te
4、chnology. / Accompany request for approval of testing agency with a copy of Report of Latest Inspection of Laboratory Facilities by CCRL./ C. Testing agency shall furnish equipment and qualified technicians to establish proportions of ingredients for concrete mixes. 1.4 TOLERANCES: A. Formwork: ACI
5、117, except the elevation tolerance of formed surfaces before removal of shores is +0 mm (+0 inch) and -20 mm (-3/4 inch). B. Reinforcement Fabricating and Placing: ACI 117, except that fabrication tolerance for bar sizes Nos. 10, 13, and 16 (Nos. 3, 4, and 5) (Tolerance Symbol 1 in Fig. 2.1(a), ACI
6、, 117) used as column ties or stirrups is +0 mm (+0 inch) and -13 mm (-1/2 inch) where gross bar length is less than 3600 mm (12 feet), or +0 mm (+0 inch) and -20 mm (-3/4 inch) where gross bar length is 3600 mm (12 feet) or more. C. Cross-Sectional Dimension: ACI 117, except tolerance for thickness
7、 of slabs 12 inches or less is +20 mm (+3/4 inch) and - 6 mm (-1/4 inch). Tolerance of thickness of beams more than 300 mm (12 inch) but less than 900 mm (3 feet) is +20 mm (+3/4 inch) and -10 mm (-3/8 inch). D. Slab Finishes: ACI 117, Section 4.5.6, F-number method in accordance with ASTM E1155, ex
8、cept as follows: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-03-11 03 30 00 - 2 1. Test entire slab surface, including those areas within 600 mm (2 feet) of construction joints and vertical elements that project through slab surface. 2. Maximum e
9、levation change which may occur within 600 mm (2 feet) of any column or wall element is 6 mm (0.25 inches). 3. Allow sample measurement lines that are perpendicular to construction joints to extend past joint into previous placement no further than 1500 mm (5 feet). 1.5 REGULATORY REQUIREMENTS: A. A
10、CI SP-66 ACI Detailing Manual. B. ACI 318 - Building Code Requirements for Reinforced Concrete. C. ACI 301 Standard Specifications for Structural Concrete. 1.6 SUBMITTALS: A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, and SAMPLES. B. Shop Drawings: Reinforcing steel: Co
11、mplete shop drawings C. Mill Test Reports: 1. Reinforcing Steel. 2. Cement. D. Manufacturers Certificates: 1. Abrasive aggregate. 2. Lightweight aggregate for structural concrete. 3. Air-entraining admixture. 4. Chemical admixtures, including chloride ion content. 5. Waterproof paper for curing conc
12、rete. 6. Liquid membrane-forming compounds for curing concrete. 7. Non-shrinking grout. 8. Liquid hardener. 9. Waterstops. 10. Expansion joint filler. 11. Adhesive binder. E. Testing Agency for Concrete Mix Design: Approval request including qualifications of principals and technicians and evidence
13、of active participation in program of Cement and Concrete Reference Laboratory (CCRL) of National Institute of Standards and Technology / and copy of report of latest CCRL, Inspection of Laboratory. / F. Test Report for Concrete Mix Designs: Trial mixes including water-cement / fly ash / ratio curve
14、s, concrete mix ingredients, and admixtures. G. Shoring and Reshoring Sequence: Submit for approval a shoring and reshoring sequence for flat slab/flat plate portions, prepared by a registered Professional Engineer. As a minimum, include timing of form Provided by IHSNot for ResaleNo reproduction or
15、 networking permitted without license from IHS-,-,-03-11 03 30 00 - 3 stripping, reshoring, number of floors to be re-shored and timing of re-shore removal to serve as an initial outline of procedures subject to modification as construction progresses. Submit revisions to sequence, whether initiated
16、 by Resident Engineer (see FORMWORK) or Contractor. SPEC WRITER NOTE: Delete splitting tensile strength test of lightweight concrete if no lightweight concrete, or if only used on metal deck slabs. H. Test reports on splitting tensile strength (Fct) of lightweight concrete. 1.7 DELIVERY, STORAGE, AN
17、D HANDLING: A. Conform to ACI 304. Store aggregate separately for each kind or grade, to prevent segregation of sizes and avoid inclusion of dirt and other materials. B. Deliver cement in original sealed containers bearing name of brand and manufacturer, and marked with net weight of contents. Store
18、 in suitable watertight building in which floor is raised at least 300 mm (1 foot) above ground. Store bulk cement / and fly ash / in separate suitable bins. C. Deliver other packaged materials for use in concrete in original sealed containers, plainly marked with manufacturers name and brand, and p
19、rotect from damage until used. 1.8 PRE-CONCRETE CONFERENCE: A. General: At least 15 days prior to submittal of design mixes, conduct a meeting to review proposed methods of concrete construction to achieve the required results. B. Agenda: Includes but is not limited to: 1. Submittals. 2. Coordinatio
20、n of work. 3. Availability of material. 4. Concrete mix design including admixtures. 5. Methods of placing, finishing, and curing. 6. Finish criteria required to obtain required flatness and levelness. 7. Timing of floor finish measurements. 8. Material inspection and testing. C. Attendees: Include
21、but not limited to representatives of Contractor; subcontractors involved in supplying, conveying, placing, finishing, and curing concrete; lightweight aggregate manufacturer; admixture manufacturers; Resident Engineer; Consulting Engineer; Department of Veterans Affairs retained testing laboratorie
22、s for concrete testing and finish (F-number) verification. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-03-11 03 30 00 - 4 D. Minutes of the meeting: Contractor shall take minutes and type and distribute the minutes to attendees within five days o
23、f the meeting. SPEC WRITER NOTE: Mock-up is used only with architectural exposed concrete. Check with architect for requirements. Add ACI 303.1-97 “Standard Specification for Cast-In-Place Architectural Concrete” to the Applicable Publications section. 1.9 MOCK-UP: A. In addition to the other specif
24、ied samples and tests, construct a mock-up using the materials, reinforcing, forming system and construction methods proposed for use in exposed architectural concrete. B. Construct the mock-up with at least a 2.5 m by 2.5 m (8 feet by 8 feet) exposed surface and suitable foundations. Include the fo
25、llowing where applicable: Control joints, reglets, recesses or other typical architectural details. C. Before casting the mock-up, submit full detailed Shop Drawings of the mock-up formwork for review by the Architect. Perform all necessary preliminary tests to ensure that concrete used for the mock
26、-up will exactly match the approved sample in color and texture. D. Perform the surface treatment proposed for use on one or more areas not less than 300 mm by 300 mm (1 foot by 1 foot) on the back side of the mock-up to establish the texture of finish required by the Architect. Repeat as required u
27、ntil a sample satisfactory to the Architect has been obtained. E. Treat the finished front surface of the mock-up to produce a uniform appearance similar in every respect to the approved sample area. F. The completed mock-up shall be inspected by the Architect. Failure of the mock-up to match the ap
28、proved sample will require the construction of further mock-ups until approval is obtained. Remove rejected mock-ups immediately. G. Maintain the approved mock-ups in good condition at the job site until all architectural concrete surfaces have been completed and approved by the Architect. Remove th
29、e mock-up from the site after completion of the above. 1.10 APPLICABLE PUBLICATIONS: A. Publications listed below form a part of this specification to extent referenced. Publications are referenced in text by basic designation only. B. American Concrete Institute (ACI): 117-10 . Tolerances for Concr
30、ete Construction and Materials Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-03-11 03 30 00 - 5 211.1-91(R2009) Selecting Proportions for Normal, Heavyweight, and Mass Concrete 211.2-98(R2004) Selecting Proportions for Structural Lightweight Concre
31、te 214R-02 Evaluation of Strength Test Results of Concrete 301-10 . Structural Concrete 304R-00(R2009) . Guide for Measuring, Mixing, Transporting, and Placing Concrete 305R-10 Hot Weather Concreting 306R-10 Cold Weather Concreting 308R-01(R2008) . Standard Practice for Curing Concrete 309R-05 Guide
32、 for Consolidation of Concrete 318-08 . Building Code Requirements for Reinforced Concrete and Commentary 347-04 . Guide to Formwork for Concrete SP-66-04 . ACI Detailing Manual C. American National Standards Institute and American Hardboard Association (ANSI/AHA): A135.4-2004 Basic Hardboard D. Ame
33、rican Society for Testing and Materials (ASTM): A82/A82M-07 Steel Wire, Plain, for Concrete Reinforcement A185/185M-07 . Steel Welded Wire Fabric, Plain, for Concrete Reinforcement A615/A615M-09 Deformed and Plain Billet-Steel Bars for Concrete Reinforcement A653/A653M-09 Steel Sheet, Zinc-Coated (G
34、alvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process A706/A706M-09 Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement A767/A767M-09 Zinc-Coated (Galvanized) Steel Bars for Concrete Reinforcement A775/A775M-07 Epoxy-Coated Reinforcing Steel Bars A820-06 Steel Fib
35、ers for Fiber-Reinforced Concrete A996/A996M-09 Rail-Steel and Axle-Steel Deformed Bars for Concrete Reinforcement C31/C31M-09 Making and Curing Concrete Test Specimens in the field C33-08 . Concrete Aggregates C39/C39M-09 Compressive Strength of Cylindrical Concrete Specimens Provided by IHSNot for
36、 ResaleNo reproduction or networking permitted without license from IHS-,-,-03-11 03 30 00 - 6 C94/C94M-09 Ready-Mixed Concrete C143/C143M-10 Slump of Hydraulic Cement Concrete C150-09 Portland Cement C171-07 Sheet Materials for Curing Concrete C172-08 Sampling Freshly Mixed Concrete C173-10. . Air
37、Content of Freshly Mixed Concrete by the Volumetric Method C192/C192M-07 Making and Curing Concrete Test Specimens in the Laboratory C231-09 Air Content of Freshly Mixed Concrete by the Pressure Method C260-06 Air-Entraining Admixtures for Concrete C309-07 Liquid Membrane-Forming Compounds for Curin
38、g Concrete C330-09 Lightweight Aggregates for Structural Concrete C494/C494M-10 Chemical Admixtures for Concrete C618-08 Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use as a Mineral Admixture in Concrete C666/C666M-03 Resistance of Concrete to Rapid Freezing and Thawing C881/C881M-02 Epoxy
39、-Resin-Base Bonding Systems for Concrete C1107/1107M-08 . Packaged Dry, Hydraulic-Cement Grout (Non-shrink) C1315-08 . Liquid Membrane-Forming Compounds Having Special Properties for Curing and Sealing Concrete D6-95(R2006) . Loss on Heating of Oil and Asphaltic Compounds D297-93(R2006) . Rubber Pro
40、ducts-Chemical Analysis D1751-04(R2008) Preformed Expansion Joint Filler for Concrete Paving and Structural Construction (Non-extruding and Resilient Bituminous Types) D4397-09 . Polyethylene Sheeting for Construction, Industrial and Agricultural Applications E1155-96(R2008) Determining FF Floor Fla
41、tness and FL Floor Levelness Numbers E. American Welding Society (AWS): D1.4/D1.4M-11 Structural Welding Code - Reinforcing Steel F. Concrete Reinforcing Steel Institute (CRSI): Handbook 2008 G. National Cooperative Highway Research Program (NCHRP): Provided by IHSNot for ResaleNo reproduction or ne
42、tworking permitted without license from IHS-,-,-03-11 03 30 00 - 7 Report On Concrete Sealers for the Protection of Bridge Structures H. U. S. Department of Commerce Product Standard (PS): PS 1 . Construction and Industrial Plywood PS 20 American Softwood Lumber I. U. S. Army Corps of Engineers Hand
43、book for Concrete and Cement: CRD C513 . Rubber Waterstops CRD C572 . Polyvinyl Chloride Waterstops PART 2 PRODUCTS: 2.1 FORMS: A. Wood: PS 20 free from loose knots and suitable to facilitate finishing concrete surface specified; tongue and grooved. B. Plywood: PS-1 Exterior Grade B-B (concrete-form
44、) 16 mm (5/8 inch), or 20 mm (3/4 inch) thick for unlined contact form. B-B High Density Concrete Form Overlay optional. C. Metal for Concrete Rib-Type Construction: Steel (removal type) of suitable weight and form to provide required rigidity. D. Permanent Steel Form for Concrete Slabs: Corrugated,
45、 ASTM A653, Grade E, and Galvanized, ASTM A653, G90. Provide venting where insulating concrete fill is used. E. Corrugated Fiberboard Void Boxes: Double faced, completely impregnated with paraffin and laminated with moisture resistant adhesive, size as shown. Design forms to support not less than 48
46、 KPa (1000 psf) and not lose more than 15 percent of their original strength after being completely submerged in water for 24 hours and then air dried. F. Form Lining: 1. Hardboard: ANSI/AHA A135.4, Class 2 with one (S1S) smooth side) 2. Plywood: Grade B-B Exterior (concrete-form) not less than 6 mm
47、 (1/4 inch) thick. 3. Plastic, fiberglass, or elastomeric capable of reproducing the desired pattern or texture. G. Form Ties: Develop a minimum working strength of 13.35 kN (3000 pounds) when fully assembled. Ties shall be adjustable in length to permit tightening of forms and not have any lugs, co
48、nes, washers to act as spreader within form, nor leave a hole larger than 20 mm (3/4 inch) diameter, or a depression in exposed concrete surface, or leave metal closer than 40 mm (1 1/2 inches) to concrete surface. Wire ties not permitted. Cutting ties back from concrete face not permitted. 2.2 MATE
49、RIALS: A. Portland Cement: ASTM C150 Type I or II. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-03-11 03 30 00 - 8 B. Fly Ash: ASTM C618, Class C or F including supplementary optional requirements relating to reactive aggregates and alkalies, and loss on ignition (LOI) not to exceed 5 percent. C. Coarse Aggregate: ASTM C33.
