VA 03 30 53-2012 (SHORT-FORM) CAST-IN-PLACE CONCRETE.pdf
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1、05-01-12 03 30 53 - 1 SECTION 03 30 53 (SHORT-FORM) CAST-IN-PLACE CONCRETE SPEC WRITER NOTES: 1. Use this section for small projects where cast-in-place concrete is not extensive. Use Section 03 30 00, CAST-PLACE-CONCRETE, as a reference in the preparation of this Section for items not covered herei
2、n. 2. 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 structural concrete and material and mixes for other concrete. 1.2 RELATE
3、D 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 IMPROVEMENTS. 1.3 TOLERANCES: A. ACI 117. B. Slab Finishes: ACI 117, F-number m
4、ethod in accordance with ASTM E1155. 1.4 REGULATORY REQUIREMENTS: A. ACI SP-66 ACI Detailing Manual B. ACI 318 - Building Code Requirements for Reinforced Concrete. 1.5 SUBMITTALS: A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES. B. Concrete Mix Design. C. Sho
5、p Drawings: Reinforcing steel: Complete shop drawings. D. Manufacturers Certificates: Air-entraining admixture, chemical admixtures, curing compounds. 1.6 APPLICABLE PUBLICATIONS: A. Publications listed below form a part of this specification to extent referenced. Publications are referenced in text
6、 by basic designation only. B. American Concrete Institute (ACI): 117R-10 Tolerances for Concrete Construction and Materials Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-05-01-12 03 30 53 - 2 211.1-91(R2009) Proportions for Normal, Heavyweight, an
7、d Mass Concrete 211.2-98(R2004) Proportions for Structural Lightweight Concrete 301-11 . Specification for Structural Concrete 305R-10 Hot Weather Concreting 306R-10 Cold Weather Concreting SP-66-04 ACI Detailing Manual 318/318R-11 Building Code Requirements for Reinforced Concrete 347R-08 Guide to
8、Formwork for Concrete C. American Society for Testing And Materials (ASTM): A185-07 Steel Welded Wire, Fabric, Plain for Concrete Reinforcement A615/A615M-09 Deformed and Plain Billet-Steel Bars for Concrete Reinforcement A996/A996M-09 Standard Specification for Rail-Steel and Axle-Steel Deformed Ba
9、rs for Concrete Reinforcement C31/C31M-10 Making and Curing Concrete Test Specimens in the Field C33-11 . Concrete Aggregates C39/C39M-10 Compressive Strength of Cylindrical Concrete Specimens C94/C94M-10 Ready-Mixed Concrete C143/C143M-10 Standard Test Method for Slump of Hydraulic Cement Concrete
10、C150-09 Portland Cement C171-07 Sheet Material for Curing Concrete C172-10 Sampling Freshly Mixed Concrete C173-10.Air Content of Freshly Mixed Concrete by the Volumetric Method C192/C192M-07 Making and Curing Concrete Test Specimens in the Laboratory C231-10 Air Content of Freshly Mixed Concrete by
11、 the Pressure Method C260-10 Air-Entraining Admixtures for 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 in Concrete D1751-08 . .Preformed Expansion Joint Fillers for Co
12、ncrete Paving and Structural Construction (Non-extruding and Resilient Bituminous Types) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-05-01-12 03 30 53 - 3 D4397-10 . Polyethylene Sheeting for Construction, Industrial and Agricultural Applications
13、 E1155-96(2008) . Determining FF Floor Flatness and FL Floor Levelness Numbers PART 2 - PRODUCTS 2.1 FORMS: Wood, plywood, metal, or other materials, approved by Resident Engineer, of grade or type suitable to obtain type of finish specified. 2.2 MATERIALS: A. Portland Cement: ASTM C150, Type I or I
14、I. B. Fly Ash: ASTM C618, Class C or F including supplementary optional requirements relating to reactive aggregates and alkalis, and loss on ignition (LOI) not to exceed 5 percent. C. Coarse Aggregate: ASTM C33, Size 67. Size 467 may be used for footings and walls over 300 mm (12 inches) thick. Coa
15、rse aggregate for applied topping and metal pan stair fill shall be Size 7. D. Fine Aggregate: ASTM C33. E. Lightweight Aggregate for Structural Concrete: ASTM C330, Table 1 F. Mixing Water: Fresh, clean, and potable. G. Air-Entraining Admixture: ASTM C260. H. Chemical Admixtures: ASTM C494. I. Vapo
16、r Barrier: ASTM D4397, 0.25 mm (10 mil). J. Reinforcing Steel: ASTM A615 or ASTM A996, deformed. See structural drawings for grade. K. Welded Wire Fabric: ASTM A185. L. Expansion Joint Filler: ASTM D1751. M. Sheet Materials for Curing Concrete: ASTM C171. N. Abrasive Aggregates: Aluminum oxide grain
17、s or emery grits. SPEC WRITER NOTE: Use liquid chemical floor hardeners only to improve an existing soft or dusting slab. A properly finished and cured slab does not need this treatment. This is an old technology. Liquid Densifier/Sealers are superior. O. Liquid Hardener and Dustproofer: Fluosilicat
18、e solution or magnesium fluosilicate or zinc fluosilicate. Magnesium and zinc may be used separately or in combination as recommended by manufacturer. P. Liquid Densifier/Sealer: 100 percent active colorless aqueous siliconate solution. Q. Grout, Non-Shrinking: Premixed ferrous or non-ferrous, mixed
19、 and applied in accordance with manufacturers recommendations. Grout shall show no settlement or vertical drying shrinkage at 3 days or thereafter based on Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-05-01-12 03 30 53 - 4 initial measurement made
20、 at time of placement, and produce a compressive strength of at least 18mpa (2500 psi) at 3 days and 35mpa (5000 psi) at 28 days. 2.3 CONCRETE MIXES: A. Design of concrete mixes using materials specified shall be the responsibility of the Contractor as set forth under Option C of ASTM C94. B. Compre
21、ssive strength at 28 days shall be not less than / 25mpa / 30 Mpa / (/3000 psi / 4000 psi / ). C. Establish strength of concrete by testing prior to beginning concreting operation. Test consists of average of three cylinders made and cured in accordance with ASTM C192 and tested in accordance with A
22、STM C39. D. Maximum slump for vibrated concrete is 100 mm (4 inches) tested in accordance with ASTM C143. E. Cement and water factor (See Table I): TABLE I - CEMENT AND WATER FACTORS FOR CONCRETE Concrete: Strength Non-Air-Entrained Air-Entrained Min. 28 Day Comp. Str. MPa (psi) Min. Cement kg/m3 (l
23、bs/c. yd) Max. Water Cement Ratio Min. Cement kg/m3 (lbs/c. yd) Max. Water Cement Ratio 35 (5000)1,3 375 (630) 0.45 385 (650) 0.40 30 (4000)1,3 325 (550) 0.55 340 (570) 0.50 25 (3000)1,3 280 (470) 0.65 290 (490) 0.55 25 (3000)1,2 300 (500) * 310 (520) * 1. If trial mixes are used, the proposed mix d
24、esign shall achieve a compressive strength 8.3 MPa (1200 psi) in excess of fc. For concrete strengths above 35 Mpa (5000 psi), the proposed mix design shall achieve a compressive strength 9.7 MPa (1400 psi) in excess of fc. 2. Lightweight Structural Concrete. Pump mixes may require higher cement val
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