Buffalo Wild Wings

Buffalo Wild Wings
2.07 CONCRETE MIX DESIGN
A. Prepare design mixtures for each type and strength of concrete, proportioned on the basis of
laboratory trial mixture or field test data, or both, according to ACI 301.
1. Use a qualified independent testing agency for preparing and reporting proposed mixture
designs based on laboratory trial mixtures.
2. Take care in developing mix designs to minimize curling and effects of casting directly on
vapor retarder.
3. Develop concrete mix designs for slabs on grade to minimize curling and other effects
resulting from casting directly on vapor retarder sheet.
B. Proportioning Normal Weight Concrete: Comply with ACI 211.1 recommendations.
C. Admixtures: Add acceptable admixtures as recommended in ACI 211.1 and at rates
recommended by manufacturer.
D. Concrete Mix Properties:
1. Structural Concrete:
a. 28 day compressive strength: 3000 psi.
b. Maximum aggregate size: 3/4 inch.
c. Maximum slump: 3-5 inches.
d. Maximum water/cement ratio: 0.5.
2. Interior slab on grade:
a. 28 day compressive strength: 4000 psi.
b. Maximum aggregate size: 3/4 inch.
c. Maximum slump: 3-5 inches.
d. Maximum water/cement ratio: 0.5.
3. Exterior concrete exposed to freeze-thaw cycles:
a. 28 day compressive strength: 4000 psi.
b. Maximum aggregate size: 3/4 inch.
c. Maximum slump: 3-5 inches.
d. Maximum water/cement ratio: 0.55.
e. Entrained Air Content: 6±1%.
4. Masonry Grout:
a. 28 day compressive strength: 3000 psi.
b. Maximum aggregate size: 3/8 inch.
c. Maximum slump: 8-10 inches.
2.08 MIXING
A. Ready-Mixed Concrete: Measure, batch, mix, and deliver concrete according to
ASTM C 94/C 94M, and furnish batch ticket information.
B. Project Site Mixing: Measure, batch and mix in drum type batch mixer, according to ASTM C
685. Mix each batch not less than 1-1/2 minutes and not more than 5 minutes.
PART 3 EXECUTION
3.01 EXAMINATION
A. Verify lines, levels, and dimensions before proceeding with work of this section.
3.02 PREPARATION
A. Formwork: Comply with requirements of ACI 301. Design and fabricate forms to support all
applied loads until concrete is cured, and for easy removal without damage to concrete.
B. Verify that forms are clean and free of rust before applying release agent.
C. Coordinate placement of embedded items with erection of concrete formwork and placement of
form accessories.
04-27-11 CAST-IN-PLACE CONCRETE
03300 -4